US3775701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor diode mounting and resonator structure for operation in the ehf microwave range
Assignee: Westinghouse Electric Corp
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Filing: 1972-01-21
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Granted: 1973-11-27
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Expires: 1992-01-21
Abstract
Abstract A semiconductor mounting and resonator structure particularly suitable for avalanche diode applications in the EHF microwave range, characterized in having a high degree of mechanical reliability, good heat transfer characteristics for heat generated by the diode and efficient coupling of high frequency wave energy from the diode to external waveguide circuitry.
Inventors
- 👤 L Dickens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:23
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/145
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
A semiconductor mounting and resonator structure comprising means defining a waveguide iris, a heat sink projecting into said iris from a long transverse side of the iris, a surface on said heat sink for supporting a semiconductive wafer, cantilever beam means projecting into said iris from the short transverse side of the iris and engaging at its outer end said semiconductive wafer to hold the wafer on said surface of the heat sink, means coupled to said cantilever beam for supplying a bias voltage to said wafer, and waveguide means coupled to said iris for transmitting wave energy generated by said semiconductive wafer to an external waveguide circuit.
Claim 2
Dependent Claim
108 words
A semiconductor mounting and resonator structure comprising means defining a waveguide iris, a heat sink projecting into said iris from a long transverse side of the iris, a surface on said heat sink for supporting a semiconductive wafer, cantilever beam means projecting into said iris from the short transverse side of the iris and engaging at its outer end said semiconductive wafer to hold the wafer on said surface of the heat sink, means coupled to said cantilever beam for supplying a bias voltage to said wafer, and waveguide means coupled to said iris for transmitting wave energy generated by said semiconductive wafer to an external waveguide circuit.
Claim 3
Dependent Claim
35 words
The mounting and resonator structure of claim 1 wherein said waveguide means comprises a first waveguide section on one side of said iris, and a second waveguide section on the other side of said iris.
Claim 4
Dependent Claim
52 words
The semiconductor mounting and resonator structure of claim 2 wherein said semiconductive wafer is further defined as a diode, said mounting and resonator structure including an adjustable capacitive screw disposed on the side of said cantilever beam opposite said diode for capacitively coupling the impedance of said waveguide sections to the diode.
Claim 5
Dependent Claim
75 words
The mounting and resonator structure of claim 3 including a metallic septum extending into and closing off part of said iris on the side of said diode opposite said cantilever beam to reduce the effective shunt inductance of the structure, raise the fundamental resonant frequency and to contain within the diode and the immediate vicinity of the diode the major portion of reactive circulatIng radio-frequency currents, incident to transmitting wave energy generated by said diode.
Claim 6
Dependent Claim
41 words
The mounting and resonator structure of claim 2 including a prong connected to said cantilever beam for connection to an external bias circuit, and capacitor bypass means associated with said prong for returning radio-frequency currents from the diode to ground potential.
Claim 7
Dependent Claim
48 words
The mounting and resonator structure of claim 5 wherein said iris is formed in a flat metal wafer and said prong extends through an end of said wafer, the means for bypassing said radio-frequency currents comprising an insulating washer between a portion of said prong and said wafer.
Claim 8
Dependent Claim
41 words
The mounting and resonator structure of claim 6 wherein said wafer slides into a slot in a housing defining said first and second waveguide sections, and means within one of said sections for holding said wafer in place within said slot.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |