EP0509636A1
Expired / Lapsed
EP
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Miniature dual mode planar filters
Assignee: Lanteris Space LLC
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Filing: 1992-03-11
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Granted: —
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Expires: 2012-03-11
Abstract
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 a stub (83) to the resonator (1).
Inventors
- 👤 Slawomir J. Fiedziuszko
- 👤 John A. Curtis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:32
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/201; H01P1/203; H01P1/20327; H01P1/20354; H01P1/20381; H01P7/00; H01P7/08; H01P7/082; H01P7/084; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/866
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
97 words
A dual mode planar filter comprising: substantially square resonating means having a pair of orthogonal resonating paths for conducting two modes of electromagnetic signals and having a perturbation means located in at least one corner of the resonating means for coupling the electromagnetic signals between the two modes; at least one signal input electromagnetically coupled to the resonating means for delivering electromagnetic signals to the resonating means such that the signals propagate along the resonating paths; and at least one signal output electrically coupled to the resonating means for delivering coupled electromatic signals from the resonating means.
Claim 2
Dependent Claim
15 words
The planar filter as in claim 1 wherein the resonating means is implemented using microstrip.
Claim 3
Dependent Claim
15 words
The planar filter as in claim 1 wherein the resonating means is implemented using stripline.
Claim 4
Dependent Claim
12 words
The filter as in claim 3 wherein the microstrip is a superconductor.
Claim 5
Dependent Claim
13 words
The filter as in claim 4 wherein the strip line is a superconductor.
Claim 6
Dependent Claim
28 words
The planar filter as in claim 1 wherein the perturbation means comprises at least one notch for disturbing orthogonal electromagnetic signals, resulting in the coupling of electromagnetic signals.
Claim 7
Dependent Claim
28 words
The planar filter as in claim 1 wherein the perturbation means comprises a metallic stub for disturbing orthogonal electromagnetic signals, resulting in the coupling of the electromagnetic signals.
Claim 8
Dependent Claim
29 words
The planar filter as in claim 1 wherein the perturbation means comprises of a dielectric stub for disturbing orthogonal electromagnetic signals, resulting in the coupling of the electromagnetic signals.
Claim 9
Dependent Claim
23 words
The planar filter of claim 1 wherein the signal inputs and outputs are electromagnetically coupled to the resonating means by a capacitive gap.
References Cited (Backward Citations)
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