Patent US3597710A successfully refreshed from Google Patents.
US3597710A
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US
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Aperiodic tapered corrugated waveguide filter
Assignee: Microwave Development Laboratories Inc
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Filing: 1969-11-28
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Granted: 1971-08-03
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Expires: 1989-11-28
Abstract
Abstract A waveguide band-pass filter utilizes a sequence of capacitive irises to form corrugations within the rectangular waveguide. The capacitive irises are aperiodically spaced along the guide and the capacitance of consecutive irises in the sequence are of different values. The waveguide has its height tapering in steps and each capacitive iris in the sequence is situated between waveguide sections of different heights.
Inventors
- 👤 Ralph Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:08
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/207; H01P1/211
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
72 words
A waveguide filter comprising a rectangular waveguide having a first sequence of capacitive irises forming corrugations within the guide, the capacitive irises in the first sequence being aperiodically spaced along the guide, each iris in the first sequence being of different capacitance, and the height of the waveguide containing the first sequence of irises being tapered whereby each capacitive iris in the first sequence is situated between waveguide sections of different heights.
Claim 2
Dependent Claim
72 words
A waveguide filter comprising a rectangular waveguide having a first sequence of capacitive irises forming corrugations within the guide, the capacitive irises in the first sequence being aperiodically spaced along the guide, each iris in the first sequence being of different capacitance, and the height of the waveguide containing the first sequence of irises being tapered whereby each capacitive iris in the first sequence is situated between waveguide sections of different heights.
Claim 3
Dependent Claim
28 words
The waveguide filter according to claim 1, wherein the tapered waveguide containing the first sequence of irises has its greatest height at the input end of the filter.
Claim 4
Dependent Claim
19 words
The waveguide filter according to claim 1, wherein the capacitance of consecutive irises in the first sequence changes monotonically.
Claim 5
Dependent Claim
83 words
The waveguide filter according to claim 3, further including a second sequence of capacitive irises disposed in the rectangular waveguide and forming corrugations therein, the second sequence of capacitive irises being a mirror image of the first sequence, and the height of the waveguide containing the second sequence of irises being tapered oppositely to the taper of the waveguide containing the first sequence whereby the tapered waveguide of the second sequence of irises has its greatest height at the output of the filter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |