Transmission line switch

Details Transmission line switch Transmission line switch

1995-10-23

1997-07-08

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333 24C, H01P 115

Patent

active

056465823

ABSTRACT:
The present invention is intended to prevent an unnecessary standing wave from being generated by simplifying a circuit in a transmission line switch to be used in a block-down converter for receiving, for example, satellite broadcasting. First and second amplifiers are adapted to be selectively switchable to an ON state to/from an OFF state and are arranged in first and second input lines and are respectively provided with a connection line for connecting the first and second input lines and a common output line. The connection line comprises a first transmission line 3 connected to an end part of the first input line, a second transmission line connected to an end part of the second input line and a third transmission line connected to an end part of the common output line. The first to third transmission lines are arranged in parallel to one another to transmit signals and form a DC block circuit adapted to selectively shut down a DC bias to the amplifiers.

REFERENCES:
patent: 4800343 (1989-01-01), Kinoshita
patent: 5023935 (1991-06-01), Vancraeynest
Karlin et al., "Transistorized UHF Three-Way Switch", In Soviet Invention Illustrated, Section II Electrical, p. 13, Oct. 1969, Derwent Publications Ltd.: London (1970).

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