Circuit selection device

Details Circuit selection device Circuit selection device

1997-01-16

1998-07-21

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333104, H01P 110

Patent

active

057839751

ABSTRACT:
A circuit selection device includes a first terminal, a plurality of transmission lines, a plurality of second terminals, a plurality of loads for impedance matching, and a plurality of switches. An RF signal is input/output to/from the first terminal. Each transmission line has one end connected to the first terminal. Each of the second terminals is arranged in correspondence with the other end of each of the transmission lines to selectively input/output an RF signal input/output to/from the first terminal. Each load is arranged in correspondence with the other end of each of the transmission lines. Each switch is switched/connected to one of the second terminal and the load which correspond to the other end of each of the transmission lines. When one of the switches is switched to the second terminal side, the remaining switches are switched to the load side.

REFERENCES:
patent: 2958054 (1960-10-01), Concelman
patent: 3694775 (1972-09-01), Rogers
patent: 3808566 (1974-04-01), Thompson et al.
patent: 4556808 (1985-12-01), Coats
patent: 5274343 (1993-12-01), Russell et al.
U. Tajima et al., "Broadband GaAs FET 2.times.1 switches", IEEE Gallium Arsenide Integrated Circuit Symposium-Technical Digest, pp. 81-84, (1984).

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