MMIC-compatible power amplifier

Details MMIC-compatible power amplifier MMIC-compatible power amplifier

1990-11-30

1992-02-18

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including plural amplifier channels

330277, 330306, 330311, H03F 368

Patent

active

050897918

ABSTRACT:
The parasitic capacitance which is inherent in an amplifier stage fabricated by MMIC or MIC technology oftentimes is cumbersome and of little use. The present invention utilizes this parasitic capacitance for effecting a quadrature circuit, fabricated onto the same substrate as the amplifiers for matching and biasing the amplifiers, thereby providing for broadband operation. When a pair of amplifiers are driven in quadrature, there results a low Q, low inductance circuit which has enhanced efficiency and operates at a decreased temperature.

REFERENCES:
patent: 4187471 (1980-02-01), Shimoji et al.
patent: 4914728 (1990-04-01), Fullerton

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