Solid state autotune power amplifier

Details Solid state autotune power amplifier Solid state autotune power amplifier

1981-11-23

1983-12-20

Mullins, James B.

Amplifiers

Combined with automatic amplifier disabling switch means

330279, 330298, 330305, 455 73, 455115, H03F 3191, H03G 330, H04B 104

Patent

active

044220472

ABSTRACT:
A solid state, band-pass filtered, RF power amplifier for equalizing the response of an amplified RF signal across the entire tuning range of a multi channel transmitter is disclosed. An RF signal is applied to the input of a low noise FET amplifier with a portion of the signal coupled off into a frequency counter which in conjunction with a digital switching logic selects a path through a band-pass filter having characteristics that reduce the broadband noise of the RF signal passed therethrough. Additionally, a dual directional coupler samples the output of the power amplifier with the forward sampled signal being used to control the amplifier output to a preselected level and the reverse sampled signal being used to reduce the amplifier output signal in proportion to an increase in the voltage standing wave ratio load between the amplifier and the transmit/receive switch.

REFERENCES:
patent: 4165493 (1979-08-01), Harrington

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