Directional coupler and high-frequency circuit device

Details Directional coupler and high-frequency circuit device Directional coupler and high-frequency circuit device

2007-01-09

2007-01-09

Takaoka, Dean (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S116000, C333S120000

Reexamination Certificate

active

10866759

ABSTRACT:
A directional coupler includes a conductor pattern formed on a substrate. The conductor pattern includes first to fourth lines radially extending from a predetermined point on the substrate, and conductive pattern portions. Each line has a first point a first distance from the predetermined point, and a second point a second distance from the predetermined point, wherein the first and second distances have different values. Respective first or second points of adjacent lines are connected by curves, straight lines, or bent lines with obtuse angles, and the crossing angle defined at an intersection of the connecting lines and edges of adjacent lines is obtuse. The conductive pattern portions are defined by the first to fourth lines and the connecting lines. The conductive pattern portions break degeneracy of a plurality of resonant modes.

REFERENCES:
patent: 4023123 (1977-05-01), Reindel
patent: 4093928 (1978-06-01), Proctor
patent: 4471329 (1984-09-01), Cavalieri d'Oro
patent: 4492939 (1985-01-01), Burns
patent: 4525690 (1985-06-01), De Ronde
patent: 2003/0085773 (2003-05-01), Grunewald
patent: 2002-141714 (2002-05-01), None
Bialkowski, Marek E.; “Analysis and Design of a Circular Disc 3 dB Coupler”; IEEE Transactions on Microwave Theory and Techniques, vol. 42, No. 8, Aug. 1994; pp. 1437-1442.
G.P. Riblet, “Matched Waveguide Five-Port with Partial Symmetry for use in Six-Port Measurement Systems”, I.E.E. Proceedings-H/Microwaves, Antennas and Propagation, vol. 135, No. 1, pp. 13-16 (Feb. 1988).
Kawai et al., “Planar-Circuit-Type 3dB Quadrature Hybrids”, IEEE MTT-S International Symposium Digest, vol. 1, pp. 205-208 (May 23, 1994).

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