Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2007-02-27
2007-02-27
Callahan, Timothy P. (Department: 2816)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S109000
Reexamination Certificate
active
10249392
ABSTRACT:
A variable coupling factor directional coupler having a variable aperture positioned between a transmission line section and a coupling conductor connected at either end to a center conductor of a pair of connectors. The coupling factor of an RF signal in the transmission line section to the coupling conductor may be adjusted by linear movement of a gap plate to open or close the aperture. Alternatively, the coupling conductor may be located within a slotted tube. As the slotted tube is rotated, the slotted portion of the tube opens or closes the aperture. The position of the inner conductor of the coupling conductor with respect to a grounded sidewall can be adjusted to change the coupled line impedance in order to optimize the coupler directivity.
REFERENCES:
patent: 2562281 (1951-07-01), Mumford
patent: 2657361 (1953-10-01), Henning
patent: 2679632 (1954-05-01), Bellows, Jr.
patent: 3166723 (1965-01-01), Bock et al.
patent: 4001730 (1977-01-01), Spinner
patent: 4333062 (1982-06-01), Uwano
patent: 4349793 (1982-09-01), Spinner
patent: 4754241 (1988-06-01), Spinner
patent: 5047737 (1991-09-01), Oldfield
patent: 5307030 (1994-04-01), King et al.
patent: 5347244 (1994-09-01), Monti
patent: 5926076 (1999-07-01), Johnson et al.
N. Benahmed & M. Feham, Rigourous Analytical Expressions for Electromagnetic Parameters of Transmission Lines: Coupled Sliced Coaxial Cable, www.mwjournal.com—Microwave Journal, Nov. 2001, USA.
Fallon Dan
Phelps Kerry
Electronics Research, Inc.
Martin C. Richard
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