Power recycling for modulating array transmitters

Details Power recycling for modulating array transmitters Power recycling for modulating array transmitters

1998-02-25

1999-05-25

Mis, David

Modulators

Phase shift keying modulator or quadrature amplitude modulator

375298, H03C 500, H04L 2736

Patent

active

059072644

ABSTRACT:
A modulating array transmitter that employs a power recycling method and power recovery circuit. The modulating array transmitter uses a plurality of multiphase power stages to generate a multi-point QAM constellation. Outputs of the plurality of multiphase power stages are combined in an output power combiner. The output power combiner uses terminating resistors on its difference power port(s). Using the present invention, power normally dissipated in the terminating resistors is recovered. Instead of dissipating this difference RF power, the present invention converts this power to DC power using rectifiers of the power recovery circuit. The rectified DC power may be used to supplement the DC power required for power amplifiers in the multiphase power stages. In this manner, the difference power is "recycled" and thus may be reused.

REFERENCES:
patent: 5568088 (1996-10-01), Dent et al.

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