Cavity-type microwave device.

(54) Title: CAVITY-TYPE MICROWAVE COMPONENT. (54) Title: CAVITY-TYPE MICROWAVE DEVICE.

(57) Summary

A cavity-type microwave component includes an integral cavity and a microwave array circuit arranged in the cavity; the cavity has multiple wrapping walls and a chamber defined by said multiple wrapping walls; the camera is designed to accommodate the microwave network circuit therein; a wiring slot is defined in at least one of the enclosing walls, and at least a first through hole extended through the chamber is provided in each wiring slot; The cavity-type microwave component incorporates a small size, simple structure, and wide application; In addition, cost can be reduced, batch production can be achieved, the use of fasteners such as screws is avoided, and passive intermodulation products caused by fasteners are eliminated, as the microwave component is secured without any screws.

(57) Abstract

The present invention relates to a cavity-type microwave device, comprising an integrally formed cavity body and a microwave network Circuit arranged within the cavity body. The cavity body is provided with a plurality of encapsulation walls and a cavity defined by the plurality of encapsulation walls. The cavity is used for accommodating the microwave network Circuit. A wiring groove is provided on at least one of the encapsulation walls, and at least one first throughhole penetrating into the cavity is arranged on each wiring groove. The present cavity-type microwave device is small in size, simple in structure, and strong in applicability. In addition, the present microwave device does not require any screw fastenings, thereby reducing costs and facilitating mass production. Furthermore, the hazards of intermodulation Products brought by fastenings such as screws can be avoided.

CAVITY-TYPE MICROWAVE COMPONENT

FIELD OF THE INVENTION

The present invention relates to the field of microwave communications and more especially to a microwave component.

BACKGROUND OF THE INVENTION

Microwave components are necessary in the coverage of the mobile communication network. Currently, commonly used microwave components mainly include phase shifters, power dividers, filters, couplers, diplexers, and the like. The quality of these components will have an effect on the quality of the entire network coverage. Consequently, microwave components play a very important role in the technical field of mobile communication.

A prior art microwave component is primarily composed of a microwave array circuit, a cavity, and a cover. During the assembly procedure, some structural elements function to secure the microwave network circuit to the cavity. The cavity and cover are then assembled together by means of screws. Furthermore, to facilitate soldering a transmission cable, a number of structurally complicated wiring slots are provided in the cavity.

However, the following problems exist during the design and use of microwave components:

Firstly, to avoid resonance of microwave components, a large number of screws are used to secure the cavity and cover together, thus decreasing production efficiency.

Second, using too many screws on the microwave component for fastening purposes will possibly cause failure. For example, intermodulation products are likely to be generated if the interconnection between components is poor.

Third, to install the wiring grooves to assist the welding of the power cable, the cavity is normally designed as a die-cast metal plus cover. As an alternative it is designed as a semi-open extruded cavity plus cover plus independently welded head, or extruded cavity plus independently welded head. Both the externally arranged cover and the externally arranged welded head require a large number of screws for fastening purposes. This not only increases the possibility of electrical failure, but also the size, weight, and cost.

BRIEF DESCRIPTION OF THE INVENTION

A main objective of the invention is to provide a cavity type microwave component, which can reduce the size of microwave components, avoid screw connection, and represents an optimization to the current microwave component in terms of electrical performance, physical characteristics and assembly procedures.

To achieve the above objectives, a technical solution employed by the present invention is as follows:

A cavity-type microwave component includes an integral cavity and a microwave array circuit arranged in the cavity. The cavity has multiple wrapping walls and a chamber defined by said multiple wrapping walls. The camera is designed to accommodate the microwave network circuit in it. A wiring slot is defined in at least one of the enclosure walls, and at least a first through hole extended through the chamber is provided in each wiring slot.

The cavity is formed by an extrusion or pressure casting process.

An axis of the first through hole is inclined with respect to a longitudinal direction of the microwave component.

Preferably, the anterior tilt occurs at an angle of 30 ° to 150 °.

Each enclosure wall, in which no wiring grooves are provided, of the cavity, is provided with an operating hole corresponding to a respective first through hole.

A number of wiring grooves are defined on the same enclosure wall in a layered or segmented manner; and each wiring slot is provided with said first through hole to route a transmission cable along a respective wiring slot and allow the transmission cable to pass through the first through hole to connect to the microwave network circuit to form a connection port.

Two opposite or adjacent wraparound walls are provided with the wiring slots respectively; and each wiring slot is provided with said first through hole to route a transmission cable along a respective wiring slot and allow the transmission cable to pass through the first through hole to connect to the microwave network circuit to form a connection port.

The wiring slot connects and secures to an outer conductor of the power cable by soldering; and an inner conductor of the transmission cable is allowed to pass through the first through hole and extend into the cavity to connect to the microwave network circuit.

At least one of two end surfaces along the longitudinal direction of the microwave array circuit is not provided with enclosing walls such that an opening therein through which the microwave array circuit is capable of connect to an external operating element.

A clamping groove is defined in each pair of opposing cavity enclosure walls along a longitudinal direction to clamp in place a base plate of the microwave array circuit.

An enhancement is provided on an inner wall of each pair of opposing cavity surround walls along a longitudinal direction to separate the cavity.

The microwave network circuit base plate is provided with a metal solder piece on two sides thereof and said metal solder piece is welded into the cavity.

The microwave array circuit is supported within the cavity by an isolated structural component.

The microwave network circuit is a phase shift circuit, filter circuit, power divider circuit, coupler circuit, diplexer circuit, or combination circuit.

The present invention has the following advantageous effects when compared to the prior art:

First, the cavity of the cavity-type microwave component according to the present invention is produced integrally. The microwave network circuit is secured within the cavity of the microwave component. Furthermore, the microwave network circuit can be soldered together with the inner conductor of the transmission cable. As a result, clamping of the microwave component can be accomplished without any metal screws, thus facilitating assembly and batch production. Also, passive intermodulation products caused by fasteners such as screws are eliminated.

Second, the cavity-type microwave component according to the present invention has a small size, light weight, and low cost.

Finally, the cavity-type microwave component according to the present invention has a simple construction and can be manufactured by various forming procedures such as extrusion and die-casting, thus allowing batch production.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows a perspective view of a phase shifter of a first embodiment according to the present invention;

Figure 2 shows a cross-sectional view of the phase shifter in Figure 1 along line AA;

Figure 3 shows a perspective view of a four port phase shifter of a second embodiment according to the present invention;

Figure 4 shows a partial view of the phase shifter with four ports in Figure 3;

Figure 5 shows a cross-sectional view of the four port phase shifter in Figure 3 along line AA;

Figure 6 shows a perspective view of a directional coupler of a third embodiment according to the present invention;

Figure 7 shows a cross sectional view of the directional coupler in Figure 6 along line AA;

Figure 8 shows a perspective view of a filter of a third embodiment according to the present invention;

Figure 9 shows a perspective view of a diplexer of a third embodiment according to the present invention;

Figure 10 shows a perspective view of a power divider of a fourth embodiment according to the present invention; and

Figure 11 shows a cross sectional view of the power divider in Figure 10 along line AA.

DETAILED DESCRIPTION OF THE INVENTION

The present invention will be described in detail in the following with reference to the accompanying drawings and various embodiments. The detailed description of the techniques that is not necessary for the illustration of the characteristics of the present invention will be omitted from it.

The microwave component as used herein can include phase shifters, couplers, filters, diplexers, combiners, or power dividers. Correspondingly, microwave network circuits can include a phase shift circuit, a coupler circuit, a filter circuit, a diplexer circuit, a combiner circuit, or a power divider circuit. The implementation of the above types of cavity type microwave components and their variations are well known to the person skilled in the art. As is known to the person skilled in the art these solid structures, micro-strip structure or printed structure and accordingly, the description of them is omitted from the present.

The cavity-type microwave component of the present invention includes a cavity and a microwave array circuit disposed within the cavity.

The cavity is integrally formed by extrusion or die casting. The cavity is rectangular in shape and includes multiple envelope walls and a chamber defined by the envelope walls to receive the microwave array circuit and other related components therein.

Depending on the operation requirement of the person skilled in the art, the cavity can be designed to include four longitudinally arranged wrapping walls surrounding the cavity. In other words, two end surfaces along the longitudinal direction are not provided with wrap-around walls so that an opening is predefined. Alternatively, the cavity may also be designed to contain five wraparound walls with the four anterior walls longitudinally arranged and surrounding the included cavity. In other words, one of the two end surfaces along the longitudinal direction is not provided with a wrapping wall to define an opening through which an external operating element can enter and perform the operation. For example, an external force actuating device may be provided in the opening of a phase shifter to manipulate a dielectric element to achieve phase shifting. Or, an adjustment screw may be provided in the opening to adjust a filter or the like, thereby achieving the adjustment related to the microwave network circuit.

A wiring groove is defined in one or more surrounding walls of the cavity. The wiring slot is interconnected and secured with an outer conductor of a cable by soldering. Multiple wiring slots can be defined on the same enclosure wall. These wiring grooves can be formed on the same enclosure wall in a layered or segmented manner. Layered manner means that the various wiring grooves extend along the longitudinal direction of the same shell wall and are substantially parallel to each other to form a layered configuration. The segmented manner means that the various wiring grooves are arranged discontinuously in the longitudinal direction of the same enclosure wall. For example, two wiring slots can be defined on two sides of a wraparound wall. Of course, these wiring slots can also be defined in two opposite or adjacent wraparound walls respectively depending on the configuration of the connection ports of an internal microwave network circuit. Similarly, the layered or segmented manner may apply when multiple wiring grooves are defined in an enclosing wall.

Each wiring slot has a first through hole extended through the cavity chamber so that a transmission cable can be placed in a corresponding wiring slot, meet the first through hole, and then connect to the network circuit microwave, thus forming a connection port of the same circuit.

Also, to facilitate wiring an antenna, the axis of the first through hole is tilted with respect to the longitudinal direction of the microwave component. This tilt angle, as used herein, can be flexibly selected by the person skilled in the art according to the wiring requirement. Preferably this Inclination angle varies from 30 ° to 150 °. This angle range is best suited for power cable wiring.

Furthermore, the enclosing walls such as those shown at the top in Figure 1, in which no wiring grooves are formed, of the cavity, are provided with operating holes corresponding to the first through holes respectively to achieve the connection between the transmission cable and the microwave network circuit, or to achieve adjustment and maintenance of the microwave component. As used herein, depending on the operating requirement, one skilled in the art will be able to flexibly select the surrounding walls to define the operating holes therein. Furthermore, the shape and size of the operating holes can also be flexibly designed by one skilled in the art.

The microwave network circuit may be a printed circuit based on a motherboard such as PCB or a built in metal conductor with solid structure. In case the microwave array circuit is implemented by PCB, a microwave array circuit can be printed on the PCB to perform a specific known function of the circuit. To fix the PCB inside the cavity chamber, a clamping groove can be defined on each pair of opposite wrapping walls of the cavity to clamp the motherboard in place. As an alternative, the base plate can be provided with a metal solder piece on both sides of it. The base plate can be welded onto the surrounding walls (or at any other suitable locations) located at two longitudinal ends of the cavity, thus supporting the base plate within the cavity. In case the microwave network circuit is formed of metallic conductor, the same circuit can be supported inside the chamber through an isolated structural component.

First modality

Referring to Figure 1, a cavity-type microwave component of the present invention is incorporated as a phase shifter 1. Phase shifter 1 includes a cavity 11, a phase shift circuit 12 disposed within the cavity, a dielectric element 13 located between cavity 11 and phase shift circuit 12, and an external force actuating element 14 arranged in dielectric element 13. To better explain the structure and principles of the present invention, the present invention further describes a transmission cable 15 assembled together with the phase shifter 1. Other embodiments can also be illustrated using this transmission cable.

Reference is made to Figures 1 and 2. The cavity 11 is formed by an extrusion or die-casting process. Cavity 11 has four wraparound walls (not marked). Two end surfaces of cavity 11 along its longitudinal direction are not provided with any wrapping wall in order to define an opening therein. A chamber is defined (not marked) within cavity 11. One or more wiring slots 110 are provided on an outer side of at least one surround wall of cavity 11 to solder an outer conductor 150 of a transmission cable 15 therein. Depending on the requirement of a front cable from the microwave network circuit, a plurality of first through holes 112 are defined in wiring slot 110 and extend through two side walls of the cavity. The first through hole 112 serves to receive an inner conductor 152 of the transmission cable 15 therein so that the conductor 152 will be electrically coupled with the phase shift circuit 12. Since the cavity 11 is formed of metal, the internal diameter The first through hole 112 must be designed so that a dielectric body 151 of the transmission cable 15 is allowed to pass through the hole 112. In this way, the cavity 11 of the phase displacer 1 is isolated from the inner conductor 152 of the transmission cable 15. Rare to facilitate the placement of the antenna, an axis of the first through hole 112 is at an angle to the longitudinal direction of the displacer phase 1. As such, this through hole 112 is inclined with respect to the thickness direction of an enclosing wall in which the same hole 112 is defined. This angle can be flexibly determined by the person skilled in the art based on the welding direction of the transmission cable 15. Preferably, the angle varies from 30 ° to 150 ° to facilitate the laying of the transmission cable.

Corresponding to the first through hole 112, an operating hole 111 is defined in a casing wall located at the top of the cavity 11 so that the inner conductor 152 of the transmission cable 15 will be easily electrically connected to an input port 123 of the phase shift circuit 12. Preferably, the inner conductor 152 is soldered together with the input or output port of the phase shift circuit 12. Furthermore, it is known to the person skilled in the art that the connection of the inner conductor 152 of the transmission cable 15 with the input port or output port is not limited to soldering. For example, the input port or output port can be configured such that the inner conductor is capable of inserting into the port, thereby avoiding forming an operating hole 111 in the enclosure wall. It should be understood that the operating hole 111 can be flexibly selected by the person skilled in the art according to the requirement of laying the wiring or the like. In fact, this operating hole can be formed in any enclosure wall where a wiring slot was not defined.

Referring to Figure 2, each of two opposing wrapping walls within cavity 11 is provided with a holding groove 113 on an inner surface thereof to hold in place the base plate 121 of the phase shift circuit 12.

In this embodiment, the phase shift circuit 12 is a printed circuit on a motherboard such as a PCB. Here, 121 represents the motherboard of a double-sided printed PCB, while 120 represents a phase shift circuit unit printed on the motherboard 121. An upper layer of the circuit and a lower layer of the circuit are coupled together through various openings. . In addition, a locating hole (not shown) is also defined on the motherboard. To prevent the change of location of the base plate 121 during operation, the base plate 121 with the phase shift circuit printed on it is inserted into the clamping groove 113 of the cavity 11. In addition, a solder piece Metal 122 is disposed on each of two opposite sides of the motherboard. The metal weld piece 122 is welded into the holding groove 113 of the cavity. Furthermore, an insulated structural component 16 passes through the locating hole of the base plate 121 to support it. Of course, the base plate can also be welded at another suitable location using the weld piece 122 to stabilize the base plate. In other embodiments, the motherboard 121 may be a single layer of PCB. The phase shift circuit 12 may also be a circuit constructed of conductive metal such as a metal bar following the principle of the phase shift circuit.

Please refer to Figures 1 and 2 together. As discussed above, the phase shifter 1 of the present invention includes a dielectric element 13 arranged between the cavity 11 and the phase shift circuit 12. The dielectric element 13 is elongated and formed of material with a dielectric constant^ε'> 1.0. There may be one or more types of materials to make element 13. In addition to the requirement for high dielectric constant, the material is further required preferably to have low angle tangent loss characteristics. To achieve good circuit performance, an impedance transformer can be formed by the phase shifter 1. The impedance transformer can be formed in one or more of the dielectric element 13, the interior wall of the cavity 11, and the microwave network circuit 12.

When driven, the dielectric element 13 moves straight along the longitudinal direction, thus changing the signal transmission rate within phase shifter 1, thus further changing the phase of the signal, producing phase difference, and finally performing phase shift.

External force is required to cause the dielectric element 13 to move straight. An ancient way is to apply an external force to one end of element 13 manually, by pushing and pulling element 13 along the longitudinal direction with respect to cavity 11. and phase shift circuit 12 to cause a straight motion. To assist in the pushing and pulling movement, additionally the external force actuating device 14 may be arranged in the dielectric element 13 and is located at an open end of the cavity 11. Since applying a manual external force is no better, the external force driving device 14 of the invention can further be combined with another component to form a phase shift driving device, thereby allowing electrical control of the shifter. phase 1 of the invention. As an alternative, control can be achieved with more flexibility than manually.

It can be understood by those skilled in the art that some features of this embodiment can be applied to other embodiments. For example, the material and structure characteristics of the movable dielectric body can be employed in a second embodiment. The microwave network circuit can be constructed of a metal conductor based on the well-known circuit principle, or printed circuit on a PCB-based motherboard to perform a specific circuit function. Furthermore, the manner in which the microwave array circuit is secured within the cavity can also be applied to various embodiments of the invention. Please note that in the following embodiments, a certain structure may not be described and it should not be understood that the microwave component of the invention lacks this certain structure. Furthermore, some structures in the following modalities may also apply to the present modality. In other words, the cavity-type microwave component of the present invention can be flexibly configured by one skilled in the art.

Second modality

Please refer to Figures 3 to 5. The cavity type microwave component of the present invention is a phase 2 displacer with four ports. Displacer 2 Includes a cavity 21, a phase shift circuit 22 disposed within cavity 21, and a movable dielectric element 23 positioned between cavity 21 and phase shift circuit 22.

The cavity 21 is constructed by the extrusion or die-casting process. The cavity 21 has an upper cavity 215 and a lower cavity 216 both of which run along a longitudinal direction of the cavity 21. A chamber (not marked) is defined in each of the upper cavity and the lower cavity. The same phase shift circuits 22 can be located within the upper and lower cavity chambers 215 and 216 respectively so that the four port phase shifter 2 can be adapted for a single frequency dual polarized antenna. Different phase shift circuits 22 may also be provided for the phase shifter 2 that is adapted for a multi-frequency antenna.

A wraparound wall (not marked) of cavity 21 is provided with a long hole 214 that extends along the longitudinal direction of cavity 21. To facilitate soldering a transmission cable 24, a first wiring groove may be defined. 211 on an outer side of long hole 214. In addition, a second wiring groove 210 can be constructed by removing material from the outer side portion of long hole 214. In this way, the second wiring slot 210 can be used to weld a first transmission cable 241, while the first wiring slot 211 can be used to weld a second transmission cable 242, thus the first transmission cable 241 and the second cable Transmitter 242 are arranged on the same surround wall in a layered manner.

Each of the first and second wiring grooves 211, 210 is provided with a plurality of first through holes 212 extending into the entire side wall of the cavity. The inner conductor of the transmission cable 24 is capable of passing through the first through holes 212 so that the inner conductor is capable of being electrically connected to the phase shift circuit 22. Since the cavity 21 is formed of metal, the internal diameter of the first through hole must be designed so that a dielectric body 151 of the transmission cable 24 is allowed to pass through the hole. In this way, the cavity 21 of the phase displacer 2 is isolated from the inner conductor of the cable 24. To facilitate the placement of the antenna, an axis of the first through hole 212 is angled with respect to the longitudinal direction of the phase displacer 2 . This angle can be flexibly determined by the person skilled in the art based on the welding direction of the transmission cable 24. Preferably, the angle varies from 30 ° to 150 ° to facilitate the laying of the transmission cable.

Corresponding to through hole 212, an operating hole 213 is defined in an upper wrapping wall of upper cavity 215 and a lower wrapping wall of lower cavity 216 so that the inner conductor of cable 24 will be easily electrically connected to a input or output port of phase shift circuit 22.

A clamping groove 217 is formed in each pair of opposing enclosure walls within cavity 21 to clamp phase shift circuit 22 in place, respectively. Phase shift circuit 22 is a double-sided printed circuit with the phase shift function. During assembly, the base plate, on which the phase shift circuit 22 is carried, is inserted into the clamping groove 217 of the cavity 21 and supported by an insulated structural component.

In other embodiments, to aid antenna placement, a blind hole of a certain depth may be defined at two longitudinal ends of the same cavity wall envelope. Alternatively, wiring grooves can be provided in opposite or adjacent wraparound walls of the cavity instead of a long hole 214 that extends through the two ends. Accordingly, one skilled in the art will be able to determine the number and locations of the long holes or blind holes based on the number of the ports of the microwave component. In other words, depending on the requirement, a plurality of wiring grooves can be formed at different ends of the same wrapping wall or the same or different end of different wrapping walls. Furthermore, they can also be arranged in a layered manner.

As discussed above, the four port phase shifter 1 further includes a movable dielectric element 23 disposed between the cavity 21 and the phase shifting circuit 22. An enhancement 218 is provided on an inner wall of each pair of opposing wrapping walls. of the cavity 21 along a longitudinal direction to separate the cavity. Enhancements 218 divide the chamber into two parts, one is for soldering the cable, and the other is for receiving movable dielectric element 23. Through action limited by the location of enhancements 218, movable dielectric element 23 is able to move straight along the projections 218. Furthermore, this movement will not be influenced by the location of the connection between the inner conductor of the cable 24 and the phase shift circuit 22. The moving dielectric element 23 moves straight along the longitudinal direction when subjected to a force, thus changing the signal transmission speed of the phase shifter 2. This causes a phase change of the signal and the generation of a phase difference, thus realizing the end of phase change.

Furthermore, multiple sub-cavities can be formed within cavity 21 by means of types of placements such as left-to-right placement or top-down placement. A different phase shift circuit will operate at a different working frequency and is therefore suitable for a multi-frequency antenna. One skilled in the art will know that under this principle a phase shifter can be constructed having multiple ports and multiple phase shifting components. No matter how many phase shift elements are included in the phase shift component and how many ports are included in each phase shift element, cavity 21 is of an integral configuration.

Third modality

Reference is made to Figures 6 to 7. The cavity-type microwave component of the present invention is a directional coupler 3 including a cavity 31, a coupler circuit 32, and a transmission cable 33.

The cavity 31 is integrally formed by extrusion or die casting. A chamber (not marked) is defined within cavity 31 and extends along the longitudinal direction of cavity 31. Two cavity 31 envelope walls are provided with a first wiring groove 310 and a second groove of wiring 311 respectively to weld transmission wire 33. A number of first through holes 314 are defined, which extend through the surrounding cavity walls, in each of the first wiring slot 310 and the second wiring slot 311. An inner conductor of the transmission cable 33 can move through the first through hole 314 and then connect to the directional coupler circuit. To aid in antenna wiring (not shown), an axis of the through hole 314 is angled with respect to the longitudinal direction of the cavity 31. Preferably, the angle varies from 30 ° to 150 °, which can be freely selected by the person skilled in the art according to the welding direction of the transmission cable 33 to facilitate the laying of the transmission cable 33. The enclosure walls, in which no wiring grooves are formed, of the cavity 31, are provided with operating holes 312 corresponding to the first through holes 314 respectively for making the electrical connection between the inner conductor of the transmission cable 33 and the coupler circuit input or output port 32. A number of clamping grooves 313 can be defined on an Inner wall of each pair of opposing cavity wall 31 to hold the base plate of the coupler circuit 32 in place. Coupler circuit 32 is a single or double side printed circuit with coupling function. This circuit 32 also includes a directional coupler circuit unit 32 printed on the motherboard. During assembly, the base plate, on which the directional coupler circuit unit 32 is carried, is inserted into the clamping grooves 313 of the cavity 31 and welded to the outer and inner conductors of the transmission cable 33, respectively .

Also, please refer to Figures 8 to 9. In the event that the circuit unit 320 of the microwave network circuit 32 is a filter circuit or a duplexer circuit, a corresponding filter or diplexer will be formed. When the microwave component is a filter, upon demand, an external operating element such as an adjusting screw may be provided at an open end of the cavity, as will be understood by one skilled in the art to adjust the filter.

Fourth modality

Please refer to Figures 10 through 11. The cavity-type microwave component of the present invention is a power splitter with four ports, three of which are output ports, while the remainder is an input port. The power divider includes a cavity 41, a power divider circuit 42, a transmission cable 43, and an insulated structural component 44.

The cavity 41 is integrally formed by extrusion or die casting. A chamber (not marked) is defined within cavity 41 and extends along its longitudinal direction. Two cavity enclosure walls 41 are provided with a first wiring slot 410 and a second wiring slot 411 respectively to weld the transmission wire 33 and its outer conductor. A number of first through holes 412, which extend through the surrounding cavity walls, are defined in each of the first wiring slot 410 and the second wiring slot 411. An Inner conductor of the transmission cable 43 may move through the first through hole 412. To aid wiring of an antenna, an axis of the through hole 412 is at an angle to the longitudinal direction of the cavity 41. Preferably, the angle varies from 30 ° to 150 °, which can be freely selected by the person skilled in the art according to the welding direction of the transmission cable 43 to facilitate the laying of the transmission cable 43.

Corresponding to through hole 412, an operating hole 413 is defined at the top of cavity 41 so that the inner conductor of transmission cable 43 will be easily electrically connected to an input port or output port of the splitter circuit power 42. In this embodiment, the microwave network circuit 42 is a power divider circuit 42 constructed of a metal conductor and based on the principle of the power divider circuit. This circuit 42 is clamped within cavity 41 by various insulated structural components 44.

In summary, according to the present invention, as wiring grooves are defined in the surrounding walls of the microwave component cavity, complicated components such as the power cable adapter and microwave component cover are no longer required. , thus making it easier to integrally form the cavity and also to achieve size reduction.

In the present invention, the microwave array circuit of the cavity type microwave component can employ a PCB or metal conductor structure as required, which has great flexibility.

Furthermore, since no screw clamping is used on the cavity-type microwave component of the present invention, the cost decreases, batch production is easy to operate, and the intermodulation products caused by the clips are eliminated. such as screws.

Although various embodiments of the present invention have been illustrated before, one skilled in the art will understand that variations and improvements made in the embodiments

Illustrative are within the scope of the present invention, and the scope of the present invention is limited only by the appended claims and their equivalents.