US3875513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna-coupled solid-state microwave generator systems capable of producing coherent output radiation
Assignee: Westinghouse Electric Corp
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Filing: 1970-06-15
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Granted: 1975-04-01
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Expires: 1990-06-15
Abstract
Abstract Described are solid-state microwave generator systems employing a plurality of semiconductor oscillator devices, such as space charge accumulation devices, Gunn oscillators and the like, locked together to produce coherent radiation by means of a plurality of interacting antenna elements.
Inventors
- 👤 Gene Strull
- 👤 Herbert Cooper
- 👤 Jr Charles Herbert Grauling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:05
CPC Classifications
H; H01; H01Q; H01Q23/00; H01Q21/00; H01Q21/06; H01Q21/08; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/143
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A solid-state microwave generator system comprising a plurality of adjacent semiconductor oscillator devices, means for connecting driving potential means across all of said devices whereby the devices will exhibit negative resistivity and produce oscillations, and an antenna coupled to each of said devices, the spacing between said antennas being such that their radiation fields will overlap and the frequencies of oscillation of said devices will be locked together at one coherent frequency.
Claim 2
Dependent Claim
72 words
A solid-state microwave generator system comprising a plurality of adjacent semiconductor oscillator devices, means for connecting driving potential means across all of said devices whereby the devices will exhibit negative resistivity and produce oscillations, and an antenna coupled to each of said devices, the spacing between said antennas being such that their radiation fields will overlap and the frequencies of oscillation of said devices will be locked together at one coherent frequency.
Claim 3
Dependent Claim
35 words
The solid-state microwave generator system of claim 1 wherein said oscillator devices are semiconductor space charge accumulation devices and are formed from a material selected from the group consisting of gallium arsenide and indium phosphide.
Claim 4
Dependent Claim
59 words
The solid-state microwave generator system of claim 1 wherein said semiconductor devices comprise wafers having a hole extending through the center thereof, means connecting a ground plane to one side of said wafer, a metallic contact on the other side of said wafer, and means connecting a source of driving potential between said ground plane and said metallic contact.
Claim 5
Dependent Claim
14 words
The solid-state microwave generator system of claim 3 wherein said antennas comprise dipole antennas.
Claim 6
Dependent Claim
41 words
The solid-state microwave generator system of claim 4 wherein one element of said dipole antenna extends through said contact and through said opening in said semiconductor wafer, and the other element of said dipole antenna is connected to said ground plane.
Claim 7
Dependent Claim
41 words
The solid-state microwave generator system of claim 5 wherein said one element of the dipole antenna also extends through an opening in said ground plane whereby wave energy generated within said semiconductor wafer will be coupled to said one dipole element.
Claim 8
Dependent Claim
15 words
The solid-state microwave generator system of claim 1 wherein said antennas form an end-fired array.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |