Hybrid active combiner and circulator

Details Hybrid active combiner and circulator Hybrid active combiner and circulator

2006-10-31

2006-10-31

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including distributed parameter-type coupling

Reexamination Certificate

active

07129783

ABSTRACT:
The hybrid active combiner and circulators serves as a coupler and is a three port network that integrates a directional coupler topology with active devices placed in the coupling paths in order to synthesize a low-loss active combiner circuit or a circulator device with minimal insertion losses. The coupler can have multiple stage amplifiers with transconductance values set according the Pascal's triangle for improved performance, and can function as a low cost and low weight transceiver well suited for various communications systems.

REFERENCES:
patent: 4092616 (1978-05-01), Osterwalder
patent: 5012203 (1991-04-01), Beyer et al.
patent: 5455545 (1995-10-01), Garcia
patent: 6008694 (1999-12-01), El-Sharawy
patent: 6597243 (2003-07-01), Fratti

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