Power amplifier system for radio transmitter and method for usin

Details Power amplifier system for radio transmitter and method for usin Power amplifier system for radio transmitter and method for usin

1991-07-15

1992-09-01

Mottola, Steven

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330136, 455126, H03G 320

Patent

active

051442582

ABSTRACT:
A power amplifier system suitable for a mobile radio receiver/transmitter is described. A wave form signal to be transmitted is made smooth during its rise and fall times, thereby making it possible to prevent a transmission spectrum from expanding and interfering with the adjacent channels. The power amplifier system compares an envelope signal of an inputted RF signal and that of an RF signal to be outputted, whereby the power amplifier system as a whole provides linear amplification.

REFERENCES:
patent: 4574248 (1986-03-01), Snodgrass
patent: 4592073 (1986-05-01), Watanabe

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