US4490700A
Expired / Lapsed
US
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Dielectric waveguide ferrite modulator/switch
Assignee: United States Department of the Army
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Filing: 1982-12-01
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Granted: 1984-12-25
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Expires: 2002-12-01
Abstract
Abstract A ferrite modulator/switch is disclosed for use in a dielectric waveguide ansmission line. A ferrite guide section inserted in a dielectric transmission line is longitudinally magnetized to cause a 90° rotation of a wave traveling through the guide thereby inhibiting further propagation and resulting in the scattering out of wave energy away from the dielectric line.
Inventors
- 👤 Richard A. Stern
- 👤 Richard W. Babbitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:01
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/22; H01P1/23; H01P1/10; H01P1/11
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
A dielectric waveguide switch comprising: a ferrite waveguide section having an input end and an output end, a first dielectric waveguide means connected to said input end of said ferrite section for providing an input signal and a second dielectric waveguide means connected to said output end for receiving an output signal from said ferrite section, and means for selectively rotating the polarization of signals propagating through said ferrite waveguide section.
Claim 2
Dependent Claim
71 words
A dielectric waveguide switch comprising: a ferrite waveguide section having an input end and an output end, a first dielectric waveguide means connected to said input end of said ferrite section for providing an input signal and a second dielectric waveguide means connected to said output end for receiving an output signal from said ferrite section, and means for selectively rotating the polarization of signals propagating through said ferrite waveguide section.
Claim 3
Dependent Claim
27 words
A dielectric waveguide switch as set forth in claim 1 wherein said ferrite waveguide section and said first and second waveguide means have substantial equal dielectric constants.
Claim 4
Dependent Claim
19 words
A dielectric waveguide switch as set forth in claim 1 wherein said ferrite waveguide section has a square cross-section.
Claim 5
Dependent Claim
33 words
A dielectric waveguide switch as set forth in claim 1 wherein said means for including a magnetic field is a coil wrapped about said ferrite waveguide section and connected to a voltage source.
Claim 6
Dependent Claim
36 words
A dielectric waveguide switch as set forth in claim 1 wherein said ferrite waveguide section has a rectangular cross-section having height, width and length dimensions sufficient to permit a 90° rotation of a wave traveling therethrough.
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) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |