Wide dynamic range amplifier with second harmonic signal cancell

Details Wide dynamic range amplifier with second harmonic signal cancell Wide dynamic range amplifier with second harmonic signal cancell

1984-04-05

1985-07-23

Mullins, James B.

Amplifiers

With distributed parameter-type coupling means

330124R, 330149, 330295, 333109, 333125, H03F 126, H03F 360

Patent

active

045310980

ABSTRACT:
The signal to be amplified is applied to a quadrature coupler which splits the signal equally to provide two output signals in phase quadrature. The quadrature signals are amplified equally, which generates a second harmonic in each of the signals 180 degrees out of phase. The amplified signals are combined in an in-phase power divider to provide a single amplified output signal wherein the out-of-phase second harmonic signals cancel.

REFERENCES:
patent: 3371284 (1968-02-01), Engelbrecht
patent: 3516024 (1970-06-01), Lange
patent: 4263559 (1981-04-01), Ho
patent: 4352071 (1982-09-01), Childs et al.
Franke, Earnest A. and Noorani, Ahamed E., "Wilkinson Hybrid With Quarter-Wave Offset", R. F. Design, Nov. 1981, pp. 32-38.

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