The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 1999
Filed:
Feb. 25, 1998
David Feldman, San Diego, CA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
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.