Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Patent
1999-04-22
2000-08-01
Pascal, Robert
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
330301, H03F 368
Patent
active
060972505
ABSTRACT:
An amplifier circuit (400) includes an input port (402) for receiving a signal and a first balun (404) for splitting the signal into first and second signals. First and second amplifiers (406, 408) are coupled to outputs of the first balun (404) for respectively amplifying the outputs of the first balun (404) to generate first and second amplified signals. Second and third baluns (410, 412) are coupled, respectively, to outputs of the first and second amplifiers (406, 408) for splitting, respectively, each of the first and second amplified signals into in-phase and out-of-phase components. The amplifier circuit (400) also includes third and fourth amplifiers (414, 416) coupled to outputs of the second balun (410) for respectively amplifying the outputs of the second balun (410) to generate third and fourth amplified signals and fifth and sixth amplifiers (418, 420) coupled to outputs of the third balun (412) for respectively amplifying the outputs of the third balun (412) to generate fifth and sixth amplified signals. A fourth balun (422) combines the third and fourth amplified signals into a first combined signal, and a fifth balun (424) combines the fifth and sixth amplified signals into a second combined signal. The amplifier circuit (400) further includes a combiner, such as an additional balun (326) or a summer (430), for combining the first and second combined signals to generate an amplifier output signal.
REFERENCES:
patent: 3403357 (1968-09-01), Rosen et al.
patent: 3423688 (1969-01-01), Seidel
patent: 4392252 (1983-07-01), Cluniat
patent: 5017886 (1991-05-01), Geller
patent: 5081425 (1992-01-01), Jackson et al.
patent: 6028485 (2000-02-01), Sigmon et al.
Al-Araji Saleh R.
Kamali Walid
Barnhardt III Hubert J.
Choe Henry
Gardner Kelly A.
Massaroni Kenneth M.
Pascal Robert
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