Selective power combiner using phase shifters

Details Selective power combiner using phase shifters Selective power combiner using phase shifters

1990-09-28

1992-01-21

Mottola, Steven

Amplifiers

With plural amplifier channels

Redundant amplifier circuits

330124D, H03F 368

Patent

active

050830945

ABSTRACT:
A circuit for selecting and combining power signals of a pair of parallel amplifiers (3,4) using phase shifters (5,6) having fixed phase. Either amplifier (3,4) may be selected to produce a power signal of power P at the circuit output (9), where P is the power at the output (11,12) of each amplifier (3,4). Alternatively, power from the two amplifiers (3,4) may be combined to produce a signal of power 2P at the circuit output (9). By using a passive circuit to achieve the selection and combination, the use of heavier and less reliable relay switches is avoided.

REFERENCES:
patent: 4016503 (1977-04-01), Rambo
patent: 4311965 (1982-01-01), Jones
patent: 4315222 (1982-02-01), Saleh
patent: 4477781 (1984-10-01), Reuss, Jr.
patent: 4549152 (1985-10-01), Kumar
patent: 4618831 (1986-10-01), Egami et al.
patent: 4755769 (1988-07-01), Katz
patent: 4841262 (1989-06-01), Lomangino

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