Broadband antenna and an electric device thereof

Broadband antenna and its electronic device

This creation relates to an antenna, and more particularly to the creation of a wideband antenna with a feed surface.

With the development of wireless communication technology, many electronic products that provide wireless communication functions, such as mobile phones and notebook computers, have been widely used in the market, and wireless communication technologies have been widely used to transmit information. With the advancement of wireless communication systems, the demand for broadband antennas is increasing. In order to comply with wireless communication devices of various frequency bands, antennas with larger bandwidths have become an inevitable trend in the future development of technology.

On the other hand, in today's wireless communication technologies, transmission methods using WWAN (Wireless Wide Area Network) antennas have become very popular and occupy an important position. Therefore, it is a built-in antenna for various wireless communication products. In the prior art, the operating frequency required by the WWAN antenna is typically in the range of 824 to 960 MHz and 1710 to 2170 MHz. However, with the advancement of technology, the bandwidth of antennas in the prior art has been insufficient. Today's antennas are required to have a wider bandwidth, such as 1575MHz for Global Positioning System (GPS) and 1627MHz for Digital Video Broadcasting-Handheld (DVB-H). frequency.

In order to make these electronic products have wireless communication functions and to comply with transmission in various frequency bands, the prior art has disclosed an antenna in which electromagnetic waves can be induced in these electronic products. The antenna 90 disclosed in the prior art is disclosed in U.S. Patent No. 6,861,986. The antenna 90 of the prior art has a radiating element 91, a connecting element 92 and a grounding element 93. Wherein, the connecting member 92 has a first end 921 and a second end 922; and the first end 921 of the connecting member 92 is connected to the radiating element 91, and the second end 922 is connected to the grounding member 93.

Next, please refer to FIG. 1B for the voltage standing wave ratio (VSWR) of the antenna 90 of FIG. 1A at different frequencies. As can be seen from FIG. 1B, the antenna 90 can only be transmitted over a range of frequencies of about 2.5 GHz and about 5 GHz. Therefore, the antenna 90 in the prior art does not meet the bandwidth requirements of today's WWAN antennas or other wideband antennas.

Therefore, a new wideband antenna needs to be created to solve the problems of the prior art.

The main purpose of this creation is to provide an antenna that has the effect of a wide frequency.

To achieve the above object, the broadband antenna of the first embodiment of the present invention includes a radiating element, a grounding element, a short-circuiting element, and a feed surface. The radiating element includes a first radiating area and a second radiating area, and the first radiating area and the second radiating area are perpendicularly connected to each other. The shorting element simultaneously connects the first radiating region of the radiating element with the grounding element. The feed face is a wide plane that is perpendicular to the second radiating region. The edge of the feed face includes a feed point, a first end point and a second end point. The feed point is electrically connected to a feed line for transmitting an electrical signal. The distance from the first endpoint to the feed point needs to be less than the distance from the second endpoint to the feed point. And the distance from the second end point to the short-circuiting element is smaller than the distance from the first end point to the short-circuiting element, and the distance from the short-circuiting element to the second end point is less than or equal to the distance of the short-circuiting element to the feeding point.

In another embodiment of the present invention, the radiating element of the broadband antenna has an additional third radiating area extending.

In still another embodiment of the present invention, the grounding element of the broadband antenna extends out of a parasitic element. The parasitic element can be oriented in the same or a different direction than the third radiation area.

In still another embodiment of the present invention, the radiating element of the broadband antenna extends further out of the fourth radiating region.

In this way, the broadband antenna has the ability to transmit signals of a wider bandwidth.

Because the creation of this creation is novel, it can provide industrial use, and it has improved efficiency, so it applies for a new patent according to law.

In order to enable your review board to better understand the technical content of this creation, several preferred embodiments are described below.

Please refer to FIG. 2A for a perspective view of the first embodiment of the wideband antenna.

The wideband antenna 10a of the first embodiment of the present invention is a short monopole antenna. The broadband antenna 10a includes a radiating element 20, a grounding element 30, a shorting element 40, and a feed surface 50a. The radiating element 20 includes a first radiating area 21 and a second radiating area 22 for transmitting wireless communication signals. The first radiating region 21 and the second radiating region 22 are perpendicularly connected to each other. The grounding element 30 serves as a ground for the multi-frequency antenna 10a. The shorting element 40 simultaneously connects the first radiating region 21 of the radiating element 20 with the grounding element 30, so that the broadband antenna 10a has a better resonance effect. The feed face 50a is a wide plane that is perpendicular to the second radiating region 22. The feed surface 50a has a feed point F, a first end point 51a and a second end point 52a. The first end point 51a and the second end point 52a are located at the junction of the feed face 50a and the second radiating area 22. The feed point F is located at the edge of the feed face 50a. The feed point F is electrically connected to a feed line (not shown) for transmitting an electrical signal. The feed line can be a cable such as RF Cable, but this creation is not limited to this. When the electrical signal is transmitted into the feeding surface 50a, since the feeding surface 50a has a wide plane, the electrical signal can have a wider current transmission path when fed.

In the present embodiment, the edge of the feeding surface 50a of the broadband antenna 10a is a boundary of a straight line. It should be noted that this creation has a limitation on the shape relationship of the feeding surface 50a of the broadband antenna 10a. The distance between the distance from the first end point 51a to the feed point F and the distance from the second end point 52a to the feed point F is one to two or one to three. It should be noted that this creation is not limited to the above-mentioned precise proportion. The focus of this creation is that the distance from the first end point 51a to the feed point F needs to be smaller than the distance from the second end point 52a to the feed point F. . And the distance from the second end point 52a to the shorting element 40 is less than the distance from the first end point 51a to the shorting element 40. In this way, the wideband antenna 10a can have a wider high frequency bandwidth.

The VSWR of the wideband antenna 10a at different frequencies is as shown in Fig. 2B. As is apparent from Fig. 2B, the VSWR of the wideband antenna 10a is below 2 from the range of the frequency of 2.3 GHz to 5.9 GHz. Therefore, the wideband antenna 10a has a function of transmitting a 2.3 GHz to 5.9 GHz signal. The wideband antenna 10a has a wider bandwidth than the antenna 90 of the prior art in FIG. 1A.

The field map of the broadband antenna 10a in the horizontal plane is as shown in Fig. 2C. As can be seen from Fig. 2C, the wideband antenna 10a is an omnidirectional antenna.

Next, please refer to FIG. 3A for a perspective view of a second embodiment of the present inventive wideband antenna. The shorting element 40 of the broadband antenna 10b is located approximately at the center point of the second end point 52a and the feed point F. The shorting element 40 of the broadband antenna 10b is closer to the feed point F than the wideband antenna 10a. As such, the VSWR of the broadband antenna 10b at different frequencies is as shown in FIG. 3B. The wideband antenna 10b also has the function of broadband transmission. Therefore, the distance from the shorting element 40 to the second end point 52a is less than or equal to the distance of the shorting element 40 to the feed point F.

Next, please refer to FIG. 4A and FIG. 4B simultaneously for a perspective view of the third embodiment of the present wideband antenna and its VSWR at different frequencies. The wideband antenna 10c is a reverse wideband antenna 10a, that is, the feed surface 50b is opposite in shape to the feed surface 50a of the wideband antenna 10a. And the distance from the second end point 52b to the shorting element 40 is also smaller than the distance from the first end point 51b to the shorting element 40, and the distance from the shorting element 40 to the second end point 52b is also less than or equal to the shorting element 40 to the feeding point. The distance of F. In this way, the broadband antenna 10c can also achieve the effect of wide frequency.

It should be noted that the boundary of the feeding surface 50a of the present invention is not limited to the shape of the ladder shape in FIG. 2A, and may be a shape of a boundary such as a triangle or a circular arc, for example, as shown in FIG. 5A. The embodiment shown. Figure 5A is a perspective view of a fourth embodiment of the present inventive broadband antenna. In Fig. 5A, the boundary of the feeding surface 50c of the broadband antenna 10d is a circular arc type boundary. It should be noted that the distance relationship between the feeding point F of the broadband antenna 10d and the first end point 51c and the second end point 52c is also limited. The distance from the first end point 51c to the feed point F needs to be less than the distance from the second end point 52c to the feed point F. And likewise, the distance from the second end point 52c to the shorting element 40 is less than the distance from the first end point 51c to the shorting element 40, and the distance from the shorting element 40 to the second end point 52c is also less than or equal to the shorting element 40 to the feed. The distance to the point F.

Please refer to FIG. 5B for the VSWR at different frequencies according to FIG. 5A. As can be seen from Fig. 5B, the feeding surface 50c of the arc-shaped boundary can also have the effect of wide-band antenna 10d having a wide frequency.

The shape of the feeding surface can also be as shown in Fig. 6A, which is a perspective view of the fifth embodiment of the present invention. The wideband antenna 10e has a feed surface 50d. One side of the feeding surface 50d is a short side portion of the oblique side, and the other side is a long side portion of the right angle form. The VSWR of the wideband antenna 10e is as shown in Fig. 6B, and Fig. 6B is based on Fig. 6A, showing its VSWR at different frequencies. As can be seen from Fig. 6B, the applicable frequency band of the wideband antenna 10e is also within the scope of the present invention.

Please refer to FIG. 7A again for a perspective view of a sixth embodiment of the present invention. The feeding surface 50e of the broadband antenna 10f has a Tuning Bar 53, which can be regarded as a radiating element extending in the vicinity of the feeding point F for improving the high frequency matching of the broadband antenna 10f. The VSWR of the wideband antenna 10f is as shown in Fig. 7B, and Fig. 7B shows its VSWR at different frequencies according to Fig. 7A. As is apparent from Fig. 7B, the wideband antenna 10f to which the tuning lever 53 is added can have a wider operating band at a high frequency.

Next, please refer to FIG. 8 for a perspective view of a seventh embodiment of the present wideband antenna.

The wideband antenna 10g is a combination of a short-frequency monopole antenna and a low-frequency Planar Inverted-F Antennas (PIFA). The wideband antenna 10g has a third radiating region 23 beside the feeding face 50a, compared to the configuration of the wideband antenna 10a to the wideband antenna 10f in the above embodiment. The third radiating region 23 extends from the second radiating region 22 of the radiating element 20. The third radiating region 23 is perpendicularly connected to the second radiating region 22 and serves as a structure for the resonant low frequency. By increasing the structure of the third radiating region 23, the wideband antenna 10g can have a lower frequency operating bandwidth to meet the needs of other types of antennas, such as WWAN antennas operating at frequencies below 2.3 GHz.

Next, please refer to FIG. 9A for an eighth embodiment of the present creation. Figure 9A is a perspective view of an eighth embodiment of the present inventive broadband antenna.

In FIG. 9A, the grounding element 30 of the broadband antenna 10h extends beyond the parasitic element 31 and faces in the opposite direction to the third radiating region 23. The function of the parasitic element 31 is to enable the bandwidth of the wideband antenna 10h to move to a lower frequency at a lower frequency. As a result, the VSWR of the broadband antenna 10h at different frequencies is as shown in FIG. 9B, and FIG. 9B shows the VSWR at different frequencies according to FIG. 9A. As is apparent from Fig. 9B, the wideband antenna 10h can function between frequencies of about 1.6 GHz to 2.2 GHz. In this way, the bandwidth requirements of the WWAN antenna can be met.

Next, please refer to FIG. 10 for a perspective view of a ninth embodiment of the present wideband antenna.

In the ninth embodiment, the radiating element 20 of the broadband antenna 10i extends further out of the fourth radiating region 24. The fourth radiating region 24 is in contact with the first radiating region 21 for increasing the radiation effect of the integral radiating element 20.

On the other hand, the parasitic element 31 in the antenna can also face in different directions. As shown in Fig. 11A, Fig. 11A is a perspective view of a tenth embodiment of the present inventive wideband antenna. The parasitic element 31 of the wideband antenna 10j is oriented in a different direction from the parasitic element 31 in the wideband antenna 10i of FIG. 10, that is, the parasitic element 31 of the wideband antenna 10j is oriented in the same direction as the third radiating region 23.

Finally, the VSWR of the wideband antenna 10j at different frequencies is as shown in Fig. 11B, and Fig. 11B shows its VSWR at different frequencies according to Fig. 11A. It can be seen from Fig. 11B that the wideband antenna 10j can also function between frequencies of about 1.6 GHz to 2.1 GHz, so the wideband antenna 10j is also in compliance with the bandwidth requirement of the WWAN antenna. The field pattern of the wideband antenna 10j in the horizontal plane is as shown in Fig. 11C, and Fig. 11C is a field diagram in the horizontal plane according to Fig. 11A. As can be seen from the field diagram of Fig. 11C, the wideband antenna 10j is also an omnidirectional antenna.

Finally, please refer to FIG. 12 for a system block diagram of the electronic device of the present invention. The electronic device 60 can be a mobile computer such as a notebook computer or a GPS device, and the creation is not limited thereto. As shown in FIG. 12, the present invention can be fed into the created wideband antenna 10a (or any of the wideband antenna 10b to the broadband antenna 10j) by using the RF cable and connected to the wireless signal module 61 to enable the wireless The signal module 61 processes the signal of the broadband antenna 10a, such as transmitting or receiving signals. In this way, the electronic device 60 can receive or transmit the wireless signal to other devices (not shown) through the broadband antenna 10a to achieve the purpose of wireless communication.

In summary, this creation, regardless of its purpose, means and efficacy, is showing its characteristics that are different from the well-known techniques. You are requested to review the examination and express the patent as soon as possible. It is to be noted that the various embodiments described above are merely illustrative for ease of explanation, and the scope of the claims is intended to be limited by the scope of the claims.

<p>10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, 10i, 10j. . . Broadband antenna</p><p>20. . . Radiation element</p><p>twenty one. . . First radiation area</p><p>twenty two. . . Second radiation area</p><p>twenty three. . . Third radiation area</p><p>twenty four. . . Fourth radiation area</p><p>30. . . Grounding element</p><p>31, 31'. . . Parasitic element</p><p>40. . . Short circuit component</p><p>50a, 50b, 50c, 50d, 50e. . . Feeding surface</p><p>51a, 51b, 51c. . . First endpoint</p><p>52a, 52b, 52c. . . Second endpoint</p><p>53. . . Adjustment rod</p><p>60. . . Electronic device</p><p>61. . . Wireless signal module</p><p>F. . . Feeding point</p><p>90. . . Prior art antenna</p><p>91. . . Radiation element</p><p>92. . . Connecting element</p><p>93. . . Grounding element</p><p>921. . . First end</p><p>922. . . Second end</p>

Figure 1A is a schematic diagram of an antenna of the prior art.

Figure 1B shows its VSWR at different frequencies in accordance with Figure 1A.

2A is a perspective view of a first embodiment of the present inventive wideband antenna.

Figure 2B shows its VSWR at different frequencies in accordance with Figure 2A.

Figure 2C is a field diagram of the horizontal plane in accordance with Figure 2A.

3A is a perspective view of a second embodiment of the present inventive wideband antenna.

Figure 3B shows its VSWR at different frequencies in accordance with Figure 3A.

4A is a perspective view of a third embodiment of the present inventive wideband antenna.

Figure 4B shows its VSWR at different frequencies in accordance with Figure 4A.

Figure 5A is a perspective view of a fourth embodiment of the present inventive broadband antenna.

Figure 5B shows its VSWR at different frequencies in accordance with Figure 5A.

Figure 6A is a perspective view of a fifth embodiment of the present inventive wideband antenna.

Figure 6B shows its VSWR at different frequencies in accordance with Figure 6A.

Figure 7A is a perspective view of a sixth embodiment of the present inventive broadband antenna.

Figure 7B shows its VSWR at different frequencies in accordance with Figure 7A.

Figure 8 is a perspective view of a seventh embodiment of the present inventive wideband antenna.

Figure 9A is a perspective view of an eighth embodiment of the present inventive broadband antenna.

Figure 9B shows its VSWR at different frequencies in accordance with Figure 9A.

Figure 10 is a perspective view of a ninth embodiment of the present inventive wideband antenna.

Figure 11A is a perspective view of a tenth embodiment of the present inventive broadband antenna.

Figure 11B shows its VSWR at different frequencies in accordance with Figure 11A.

Figure 11C is a field diagram showing its horizontal plane in accordance with Figure 11A.

Figure 12 is a system block diagram of the electronic device of the present invention.