Patent US5248947A successfully refreshed from Google Patents.
US5248947A
Expired / Lapsed
US
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Microwave oscillator having microstrip antenna for test purposes
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1992-04-21
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Granted: 1993-09-28
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Expires: 2012-04-21
Abstract
Abstract An oscillating apparatus comprising: an oscillator unit for oscillating in the microwave band; an output unit electromagnetically coupled to the outputting unit of the oscillator unit for taking an oscillation output outside; and an antenna element electromagnetically coupled to a part of the outputting unit, or a part of the output unit for radiating part of the oscillation output in an electromagnetic wave.
Inventors
- 👤 Nobuo Shiga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:53
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/267; G; G01; G01R; G01R31/00; G01R31/28; G01R31/302; G01R31/304; H03; H03B; H03B5/00; H03B5/18; H03B5/1841; H03B5/1847; H03B5/1852
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
An oscillating apparatus comprising: on oscillator unit having an output terminal for outputting an oscillation signal in the microwave band; a microstrip line physically and electrically connected to said output terminal, the microstrip line being adapted for providing physical and electrical connection to an external circuit; and an antenna means including an antenna element for radiating a part of the oscillation signal by way of an electromagnetic wave, and a coupling part which electrically connects the antenna element to the microstrip line, the coupling part being physically separated from the microstrip line by a gap.
Claim 2
Dependent Claim
95 words
An oscillating apparatus comprising: on oscillator unit having an output terminal for outputting an oscillation signal in the microwave band; a microstrip line physically and electrically connected to said output terminal, the microstrip line being adapted for providing physical and electrical connection to an external circuit; and an antenna means including an antenna element for radiating a part of the oscillation signal by way of an electromagnetic wave, and a coupling part which electrically connects the antenna element to the microstrip line, the coupling part being physically separated from the microstrip line by a gap.
Claim 3
Dependent Claim
28 words
An oscillating apparatus according to claim 1, wherein the oscillator unit is a microwave monolithic integrated circuit having devices including a MESFET integrated on a semi-insulating GaAs substrate.
Claim 4
Dependent Claim
37 words
An oscillating apparatus according to claim 1, wherein the oscillator unit is a microwave hybrid integrated circuit having a plurality of chips including a GaAs MESFET chip arranged and wired with one another on an insulating substrate.
Claim 5
Dependent Claim
31 words
An oscillating apparatus according to claim 1, wherein the coupling part has a length substantially one-fourth of a wavelength of said oscillation signal at an intended operating frequency of said apparatus.
Claim 6
Dependent Claim
15 words
An oscillating apparatus according to claim 1, wherein the antenna element is a microstrip antenna.
Claim 7
Dependent Claim
21 words
An oscillating apparatus according to claim 1, wherein the antenna element is a microstrip antenna electromagnetically coupled to the microstrip line.
Claim 8
Dependent Claim
33 words
An oscillating apparatus according to claim 1, wherein the antenna element is a second microstrip line and a microstrip antenna which are of a thin conducting film formed on a single dielectric substrate.
Claim 9
Dependent Claim
43 words
An oscillating apparatus according to claim 1, wherein a GaAs chip constituting the oscillator unit is mounted on the top surface of a dielectric substrate having a conducting layer formed on the underside, and the microstrip line is formed on the dielectric substrate.
Claim 10
Dependent Claim
25 words
An oscillating apparatus according to claim 8, wherein a microstrip antenna constituting the antenna element is formed on the top surface of the dielectric substrate.
Claim 11
Dependent Claim
56 words
An oscillating apparatus according to claim 1, wherein a GaAs chip constituting the oscillator unit is mounted on the top surface of an insulating substrate; a dielectric substrate having a conducting layer formed on the underside is mounted on the top surface of the insulating substrate; and the microstrip line is formed on the dielectric substrate.
Claim 12
Dependent Claim
25 words
An oscillating apparatus according to claim 10, wherein a microstrip antenna constituting the antenna element is formed on the top surface of the dielectric substrate.
References Cited (Backward Citations)
US4731611A
Cited
US4736454A
Cited
JPS60248007A
Cited
EP0296838A2
Cited
JPH02132904A
Cited
JPH039602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-27 | 1997-03-29 | 1997-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-27 | 2001-03-29 | 2001-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-27 | 2005-03-29 | 2005-09-28 | $7700.00 | Window Closed / Lapsed |