Bypass circuit for radio-frequency amplifier stages

Details Bypass circuit for radio-frequency amplifier stages Bypass circuit for radio-frequency amplifier stages

2007-07-12

2009-08-25

Choe, Henry K (Department: 2817)

Amplifiers

Combined with automatic amplifier disabling switch means

C330S12400D

Reexamination Certificate

active

07579909

ABSTRACT:
An amplifier circuit includes an amplifier and a phase shifter coupled in parallel to the amplifier and switchable such that the phase shifter has a first impedance for an alternating signal in an on state and has a second impedance for the alternating signal in an off state. The second impedance is higher than the first impedance.

REFERENCES:
patent: 3283261 (1966-11-01), Buck
patent: 3718871 (1973-02-01), Kawamoto
patent: 4985686 (1991-01-01), Davidson et al.
patent: 5038113 (1991-08-01), Katz et al.
patent: 7342442 (2008-03-01), Nakatani et al.
patent: 7385445 (2008-06-01), Wright
patent: 2003/0080811 (2003-05-01), Nakatani et al.
patent: 2008/0036533 (2008-02-01), Lim

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