ATE112421T1

Transmitting and receiving arrangement for portable appliances.

Abstract

PCT No. PCT/EP90/01227 Sec. 371 Date Apr. 27, 1992 Sec. 102(e) Date Apr. 27, 1992 PCT Filed Jul. 26, 1990 PCT Pub. No. WO91/02386 PCT Pub. Date Feb. 21, 1991.An antenna for transmitter and receiver of a portable radio appliance (cordless telephone, mobile telephone, pager, telepoint appliance and so forth) essentially consists of two sheet-metal angles (2,3) which are arranged adjacently to one another. One of the two elements is excited with radio-frequency currents by means of a coaxial feedline (4). The second sheet-metal angle (3) is excited by parasitic coupling from the first sheet-metal angle (2). The sheet-metal angles (2,3) are identically oriented and the distance between them is much shorter in the end area than at the bending edge of the apex line. This results in high reactive currents and low impedance. The antenna can also be modified by feeding both sheet-metal angles (2,3), dividing it into two identical part-antennas or several sheet-metal angles. The sheet-metal angles can consist of metal foils which are applied to a plastic housing. In addition, an embodiment with wire angles is also possible.

Term

Term ended

Projected expiry passed 26 July 2010, 16.2 years ago.

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181589AustriaA

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ATA181589AAustriaA
WO9102386A1World Intellectual Property Organization (WIPO)A1
AT393054BAustriaB
EP0484454A1European Patent Office (EPO)A1
JPH05500889AJapanA
EP0484454B1European Patent Office (EPO)B1
AT112421TAustriaT
ATE112421T1This recordAustriaT1
DE59007355D1GermanyD1
US5365246AUnited States of AmericaA