Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Variable directional coupler

Variable directional coupler

US Patent 4814780 · Granted Mar 21, 1989

Estimated economic value: $7,291,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Printed circuit board filter having rows of vias defining a quasi cavity that is2011
Wide frequency band transition between via RF transmission lines and planar tran1999
Self calibrating radar system1998
Wide frequency band transition between via RF transmission lines and planar tran1998
ASR system for microburst detection1996
ASR system for microburst detection1996
Microwave amplitude equalizer circuit1995
Microwave amplitude equalizer circuit1995
Dual bandpass microwave filter1994
Tubular microwave phase shifter1990
Antenna feed network employing over-coupled branch line couplers1988
Serpentine feeds and method of making same1988