Millimeter-band switching circuit

Details Millimeter-band switching circuit Millimeter-band switching circuit

2007-09-26

2009-08-18

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S111000

Reexamination Certificate

active

07576625

ABSTRACT:
A millimeter-band switching circuit easily corrects a varied off capacitance of a switching element without shifting position of the switching element. The millimeter-band switching circuit includes: a coupling line having a line length that can be changed; a first input and output terminal; a second input and output terminal; a first transmission line connected between the first input and output terminal and a first end of the coupling line; a second transmission line connected between the input and output terminal and a second end of the coupling line; a first field effect transistor (FET) connected in parallel with the first transmission line; and a second FET connected in parallel with the second transmission line and turned ON/OFF simultaneously with turning ON/OFF of the first FET.

REFERENCES:
patent: 4525689 (1985-06-01), Wagner et al.
patent: 4701724 (1987-10-01), Martin
patent: 5023935 (1991-06-01), Vancraeynest
patent: 5363071 (1994-11-01), Schwent et al.
patent: 2003-224404 (2003-08-01), None

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