Microwave power amplifier

Details Microwave power amplifier Microwave power amplifier

2005-09-06

2005-09-06

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural amplifier channels

C330S302000, C330S310000

Reexamination Certificate

active

06940354

ABSTRACT:
A microwave power amplifier comprising a drive amplifying stage includes power elements, gate and drain bias circuits of the power elements, a RC parallel circuit connected between input port and gates of said power elements, a shunt resistor connected between ground terminal and said gates of power elements, and a negative feedback circuit connected in series with resistors and capacitors and in parallel with the power elements. An interstage matching circuit is connected in series with the drive amplifying stage; and a power amplifying stage including power elements connected in parallel with a power divider and a power coupler, gate and drain bias circuits of said power elements, a RC parallel circuit connected between the gates of power elements and the interstage matching circuit, and a shunt resistor connected between a ground and the gates of power elements.

REFERENCES:
patent: 4127750 (1978-11-01), Prudhon et al.
patent: 5694085 (1997-12-01), Walker
patent: 2000-138546 (2000-05-01), None
patent: 1020020051976 (2002-07-01), None
IEEE Transactions on Microwave Theory and Techniques, vol., 49, No. 6, Jun. 2001, “Millimeter-Wave Monolithic Power Amplifier for Mobile Borad-Band Systems” J. Caldinhas Vaz, et al., pp. 1211-1215.

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