US4504796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave circuit apparatus
Assignee: Alps Alpine Co Ltd
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Filing: 1982-09-30
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Granted: 1985-03-12
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Expires: 2002-09-30
Abstract
Abstract A microwave circuit apparatus is disclosed which includes at least one first microstrip line; at least one second microstrip line; at least one capacitor interposed between the first and second microstrip lines; and a functional element having a first electrode thereof connected high frequency-wise to the first microstrip line, and in which the second microstrip line is grounded with respect to a power source.
Inventors
- 👤 Sadao Igarashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:50
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/60; H03F3/601
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
A microwave circuit apparatus comprising: at least one first microstrip line; at least one second microstrip line; at least one capacitor interposed between said first microstrip line and said second microstrip line; and a functional element having a first electrode thereof connected high frequency-wise to said first microstrip line; said second microstrip line being grounded with respect to a power source, wherein said first microstrip line, said second microstrip line and at least one of said capacitors interposed between said first and second microstrip liens are disposed on the surface opposite the surface on which said functional element is disposed.
Claim 2
Dependent Claim
100 words
A microwave circuit apparatus comprising: at least one first microstrip line; at least one second microstrip line; at least one capacitor interposed between said first microstrip line and said second microstrip line; and a functional element having a first electrode thereof connected high frequency-wise to said first microstrip line; said second microstrip line being grounded with respect to a power source, wherein said first microstrip line, said second microstrip line and at least one of said capacitors interposed between said first and second microstrip liens are disposed on the surface opposite the surface on which said functional element is disposed.
Claim 3
Dependent Claim
19 words
The microwave circuit apparatus as defined in claim 1 wherein said functional element is a GaAs field effect transistor.
Claim 4
Dependent Claim
24 words
The microwave circuit apparatus as defined in claim 1 wherein said first and second microstrip lines are formed on a dielectric substrate by printing.
References Cited (Backward Citations)
US3940706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |