Miniature dual mode planar filters

Details Miniature dual mode planar filters Miniature dual mode planar filters

1991-04-19

1992-08-04

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333219, 333995, 505866, H01P 1203, H01P 708

Patent

active

051362686

ABSTRACT:
A dual mode microstrip resonator (1) usable in the design of microwave communication filters. The substantially square resonator (1) provides paths for a pair of orthogonal signals which are coupled together using a perturbation located in at least one corner of the resonator (1). The perturbation can be introduced by notching (3) the resonator (1) or by adding a metallic or dielectric stub (5) to the resonator (1).

REFERENCES:
patent: 3796970 (1974-03-01), Snell, Jr.
patent: 4780691 (1988-10-01), Fiedziuszko
patent: 4918050 (1990-04-01), Dworsky
J. A. Curtis and S. J. Fiedziuszko, "Miniature Dual Mode Microstrip Fiilters", Digest of the MTT symposium, Boston, Mass., Jun. 1991.

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