Efficient amplitude/phase modulation amplifier

Details Efficient amplitude/phase modulation amplifier Efficient amplitude/phase modulation amplifier

1993-02-11

1994-07-12

Grimm, Siegfried H.

Modulators

Phase shift keying modulator or quadrature amplitude modulator

332145, 375 39, H04L 2736

Patent

active

053292596

ABSTRACT:
A high efficiency amplitude/phase modulation amplifier circuit (100) includes a first (102) and a second (106) high efficiency amplifier. These amplifiers (102 and 106) amplify two constant amplitude/phase modulated signals. A combiner (104) combines the output signals from the amplifiers (102) and (106) to produce a combined signal to a load (108). Two shunt elements (202 and 204) are included to prevent the reactive components of the combined signal from reaching the amplifiers (102) and (106). With no reactive components reflected back, the amplifiers (102 and 106) can remain non-linear even though they are used to amplify an amplitude/phase modulated signal which includes Amplitude Modulation (AM) components.

REFERENCES:
patent: 4433312 (1984-02-01), Kahn
patent: 4571549 (1986-02-01), Lods et al.
patent: 5093636 (1992-03-01), Higgins, Jr. et al.

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