Totem pole rf amplifiers with phase and amplitude correction

Details Totem pole rf amplifiers with phase and amplitude correction Totem pole rf amplifiers with phase and amplitude correction

H - Electricity

03

F

H03F 3/19 (2006.01) H03F 3/16 (2006.01) H04L 27/01 (2006.01) H04L 27/34 (2006.01)

Patent

CA 2432778

Apparatus and method are provided for minimizing power losses when combining rf signals in conductors that are at quadrature phase angles. The method includes: mixing rf signals that are at quadrature phase angles; producing a dc voltage from the mixing step that is a function of a phase- angle deviation from quadrature; and correcting the phase-angle deviation. The correcting step includes tuning a length of a selected one of two rf conductors. Preferably, the method also includes equalizing amplitudes of the rf signals. When the method includes series connecting upper and lower solid-state current devices, the step of equalizing amplitudes of the rf signals includes adjusting a bias voltage of one of the solid-state current devices.

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