H - Electricity – 03 – F
Patent
H - Electricity
03
F
H03F 3/19 (2006.01) H03F 1/02 (2006.01) H03F 1/30 (2006.01) H03G 1/04 (2006.01)
Patent
CA 2073790
P/8693/MSW - 12 - ABSTRACT MICROWAVE POWER AMPLIFIERS A microwave power amplifier having application in multiple beam phased antenna array systems and including biasing means connection to the base of a microwave transistor and responsive to radio frequency signals applied to the amplifier to automatically adjust the transistor bias level to maintain constant amplifier gain. The biasing means includes two voltage regulators with their outputs capacitively coupled via a fixed resistor of value determined by the characteristics of the transistor, the base of the transistor being connected to the biasing means at the junction of the resistor and the capacitive coupling of one of the regulators. The mode of operation of the power amplifier gives rise to a highly efficient linear system while under effective Class B (non-linear) bias.
Kirby Eades Gale Baker
Matra Marconi Space Uk Limited
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