Patent EP0037070A2 successfully refreshed from Google Patents.
Patent US3593207A successfully refreshed from Google Patents.
US3593207A
Expired / Lapsed
US
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Microwave integrated power sensitive coupler
Assignee: United States Department of the Air Force
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Filing: 1970-04-27
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Granted: 1971-07-13
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Expires: 1990-04-27
Abstract
Abstract A microwave power sensitive coupler utilizing planar or strip line techniques having a coefficient of coupling, K12, between the input or main arm and the coupled power dependent arm. Thus, the coupled power would remain substantially constant over large dynamic ranges of input power level.
Inventors
- 👤 James D Woermbke
- 👤 Herbert Warren Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:15
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/185; H01P5/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
A microwave power sensitive coupler apparatus having a coupling coefficient k12 comprising in combination: a main RF transmission line transmitting an R.F. signal; A coupled power dependent line coupled to said main RF transmission line to receive a portion of said RF signal, said coupling being a coupling coefficient k12; A capacitance coupling circuit connected between said main RF transmission line and said coupled power dependent line to control said coupling coefficient k12 in dependence on a control voltage; A biasing circuit connected from said main RF transmission line and said coupled power dependent line to ground to provide said control voltage.
Claim 2
Dependent Claim
102 words
A microwave power sensitive coupler apparatus having a coupling coefficient k12 comprising in combination: a main RF transmission line transmitting an R.F. signal; A coupled power dependent line coupled to said main RF transmission line to receive a portion of said RF signal, said coupling being a coupling coefficient k12; A capacitance coupling circuit connected between said main RF transmission line and said coupled power dependent line to control said coupling coefficient k12 in dependence on a control voltage; A biasing circuit connected from said main RF transmission line and said coupled power dependent line to ground to provide said control voltage.
Claim 3
Dependent Claim
24 words
A microwave power sensitive coupler apparatus having a coupling coefficient k12 as described in claim 1 wherein said capacitive coupling circuit is voltage variable.
Claim 4
Dependent Claim
34 words
A microwave power sensitive coupler apparatus as described in claim 1 wherein said capacitance coupling circuit comprises voltage variable capacitance diodes disposed between said main RF transmission line and said coupled power dependent line.
Claim 5
Dependent Claim
32 words
A microwave power sensitive coupler apparatus as described in claim 1 wherein said capacitance coupling circuit comprises PN junctions disposed between said main RF transmission line and said coupled power dependent line.
Claim 6
Dependent Claim
59 words
A microwave power sensitive coupler apparatus as described in claim 1 wherein said biasing circuit comprises a diode and a resistor in parallel coupled between said main RF transmission line and ground, a varactor disposed between said main RF transmission line and said coupled power dependent line, and a resistor coupled between said coupled power dependent line and ground.
Claim 7
Dependent Claim
49 words
A microwave power sensitive coupler apparatus as described in claim 5 wherein said biasing circuit varies the bias voltage to said varactor such that at zero volt bias said varactor has a substantially large value of capacitance and at reverse breakdown voltage said varactor has a minimum capacitance value.
References Cited (Backward Citations)
US3012210A
Cited
US3095544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |