Antenna for a transceiver, particularly portable telephone

Details Antenna for a transceiver, particularly portable telephone Antenna for a transceiver, particularly portable telephone

1986-05-27

1988-01-26

Sikes, William L.

Communications: radio wave antennas

Antennas

With radio cabinet

343795, 343815, 455 83, 455 78, 455606, H01Q 112, H04B 144

Patent

active

047219629

ABSTRACT:
An antenna for a transceiver which does not require a transmit/receive switch, typically a cordless telephone, is formed by a printed circuit board (10) which is subdivided by two separating slits, located in respective separating planes (A, B) into three adjacent regions, defining a first end region (F2) adjacent a first slit, a second end region (F3) adjacent a second slit, and an intermediate or central region (F1) between the slits. Electrical surfaces or conductive tracks are connected across the slits (18, 19) by high-frequency impedance elements, such as high-resistance resistors or chokes, (20, 21). A high-frequency unit is located preferably beneath the intermediate region, and has a transmitter output stage, connected to a first lateral region (F2) forming an antenna, with the intermediate and other end region (F1,F3) forming director and reflector elements; a receiver input of the high-frequency module is connected to the other end region which, then, will form a receiving antenna with the intermediate and first end region forming, respectively, director and reflector elements. The high-frequency connections to the respective antennae are located close to the separating slits.

REFERENCES:
patent: 4344184 (1982-08-01), Edwards
patent: 4542532 (1985-09-01), McQuilkin
patent: 4584709 (1986-04-01), Kneisel et al.
patent: 4590614 (1986-05-01), Erat
patent: 4631546 (1986-12-01), Dumas et al.
patent: 4644366 (1987-02-01), Scholz

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