Amplifiers – With semiconductor amplifying device – Including gain control means
Patent
1996-04-25
1998-03-03
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including gain control means
330285, 455126, 455127, H03G 330
Patent
active
057240051
ABSTRACT:
A dynamic power amplifier advantageously employed in a wireless terminal for transferring and receiving signals from a base terminal includes an input amplifier adapted to receive an input signal having a given power signal level corresponding to the distance of said wireless terminal to the terminal and adapted to provide an amplifier output signal having a given power output signal level. The dynamic amplifier further includes a power sensor configured to receive the power output signal and to generate a power indication signal corresponding to the power output signal, and a converter adapted to receive the power indication signal in order to generate a biasing signal corresponding to the power indication signal. The biasing signal is applied to the input amplifier so that the operating bias point of the power amplifier varies as a function of the power indication signal.
REFERENCES:
patent: 4462004 (1984-07-01), Cox et al.
patent: 5029298 (1991-07-01), Chiba et al.
patent: 5363058 (1994-11-01), Sasaki
patent: 5532646 (1996-07-01), Aihara
patent: 5589796 (1996-12-01), Alberth, Jr. et al.
Chen Young-Kai
Lin Jenshan
Lucent Technologies - Inc.
Mullins James B.
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