Wave transmission lines and networks – Plural channel systems – Nonreciprocal gyromagnetic type
Reexamination Certificate
2009-03-06
2010-10-19
Jones, Stephen E (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Nonreciprocal gyromagnetic type
C455S073000
Reexamination Certificate
active
07816995
ABSTRACT:
A system includes a first circulator, a second circulator connected to the first circulator and a load, a third circulator connected to the second circulator, and a filter connected between the first and third circulators. The filter modifies the phase and amplitude of a first signal from the first circulator to produce a modified first signal. The modified first signal amplitude may be equal to the amplitude of a second signal from the second circulator. The phase of the modified first signal is about 180 degrees out of phase with the second signal phase. The third circulator circulates the modified first signal towards the second circulator. The first signal comprises a coupled signal from the first circulator. The second signal comprises a signal reflected from the load and a coupled signal from the second circulator. The filter may be a passive network having lumped, distributed, and resistive elements.
REFERENCES:
patent: 3729692 (1973-04-01), Tanaka et al.
patent: 4641365 (1987-02-01), Montini, Jr.
patent: 6374094 (2002-04-01), Zappala
patent: 7719384 (2010-05-01), Arceo et al.
patent: 2008/0169878 (2008-07-01), Resnati et al.
Allen Jeffery C.
Arceo Diana
Rockway John W.
Young Jeffery
Eppele Kyle
Friedl Ryan J.
Jones Stephen E
The United States of America as represented by the Secretary of
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