High gain portable radio selective call receiver

Details High gain portable radio selective call receiver High gain portable radio selective call receiver

1995-02-06

1997-02-25

Hajec, Donald T.

Communications: radio wave antennas

Antennas

With radio cabinet

H01Q 124

Patent

active

056063261

ABSTRACT:
A radio selective call receiver capable of improving an antenna property by connecting a first circuit board on a high frequency side and a second circuit board on a low frequency side by using a microstrip line. On the first circuit board, a component mounting part including an antenna, an antenna tuning circuit and a high frequency circuit part operated by a frequency resonant with an antenna tuning frequency is mounted, and on the second circuit board, another component mounting part including a low frequency circuit part operated by a lower frequency than the antenna tuning frequency is mounted. The first and second circuit boards are connected by a flexible circuit board provided with the microstrip line having a high impedance with the antenna tuning circuit.

REFERENCES:
patent: 4490579 (1984-12-01), Godoshian
patent: 4491978 (1985-01-01), Nagata et al.
patent: 4651312 (1987-03-01), Honma et al.
patent: 4899118 (1990-02-01), Polinski, Sr.
patent: 4920353 (1990-04-01), Mori et al.
patent: 4939792 (1990-07-01), Urbish et al.
patent: 5006822 (1991-04-01), Reddy
patent: 5065502 (1991-11-01), Amante
patent: 5182568 (1993-01-01), Stamps, Jr. et al.
patent: 5363114 (1994-11-01), Shoemaker
Hall et al, "The ARRL Antenna Book," 1983, pp. 3-1; 3-2, Fig. 1.
Hall et al, "The ARRL Antenna Book", pp. 2-27-30 1983.

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