Patent US2380601A successfully refreshed from Google Patents.
Patent US3775707A successfully refreshed from Google Patents.
US3775707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for antenna coupling
Assignee: Collins Radio Co
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Filing: 1972-11-06
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Granted: 1973-11-27
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Expires: 1992-11-06
Abstract
Abstract An improved antenna coupler including reactive elements for translating antenna impedance to a resistance load, and an autotransformer for transforming the resistance load to a resistive level for matching with the resistance of said radio means, said autotransformer comprising a magnetic core and a coil having a plurality of turns, tap contacts to selected turns of said coil and switch means for connecting one of said taps to said antenna and for connecting another of said taps to said inductive means.
Inventors
- 👤 M Frazier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:46
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/38; H03H17/00; H03H17/0045; H03H7/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
134 words
Means for coupling an antenna to radio means comprising reactance means for translating the antenna impedance to a resistance load having no reactive component, and autotransformer means for transforming said resistance load to a resistive level for matching with the resistance of said radio means, said autotransformer comprising a magnetic core and a coil having a plurality of turns, tap contacts to selected turns of said coil, first switch means connectable to a first plurality of said tap contacts, second switch means connectable to a second plurality of said tap contacts, and third switch means for reversibly switching said first and second switch means to said antenna and to saiD reactance means whereby a range of transformation ratios are available and said resistive load may be increased and decreased as required for impedance matching.
Claim 2
Dependent Claim
134 words
Means for coupling an antenna to radio means comprising reactance means for translating the antenna impedance to a resistance load having no reactive component, and autotransformer means for transforming said resistance load to a resistive level for matching with the resistance of said radio means, said autotransformer comprising a magnetic core and a coil having a plurality of turns, tap contacts to selected turns of said coil, first switch means connectable to a first plurality of said tap contacts, second switch means connectable to a second plurality of said tap contacts, and third switch means for reversibly switching said first and second switch means to said antenna and to saiD reactance means whereby a range of transformation ratios are available and said resistive load may be increased and decreased as required for impedance matching.
Claim 3
Dependent Claim
159 words
A coupler for coupling and impedance matching a transceiver to an antenna comprising capacitive means for translating the antenna impedance to within a limited impedance range with a negative reactance component, inductive means connected to said capacitive means for eliminating said negative reactance component and producing a resistive load, and autotransformer means for transforming said resistive load to a resistive level for matching with the transceiver resistance, said autotransformer comprising a magnetic core and a coil having a plurality of turns, tap contacts to selected turns of said coil, first switch means connectable to a first plurality of said tap contacts, second switch means connectable to a second plurality of said tap contacts, and third switch means for reversibly switching said first and second switch means to said antenna and to said inductive means whereby a range of transformation ratios are available and said resistive load may be increased and decreased as required to transform to said resistive level.
Claim 4
Dependent Claim
159 words
A coupler for coupling and impedance matching a transceiver to an antenna comprising capacitive means for translating the antenna impedance to within a limited impedance range with a negative reactance component, inductive means connected to said capacitive means for eliminating said negative reactance component and producing a resistive load, and autotransformer means for transforming said resistive load to a resistive level for matching with the transceiver resistance, said autotransformer comprising a magnetic core and a coil having a plurality of turns, tap contacts to selected turns of said coil, first switch means connectable to a first plurality of said tap contacts, second switch means connectable to a second plurality of said tap contacts, and third switch means for reversibly switching said first and second switch means to said antenna and to said inductive means whereby a range of transformation ratios are available and said resistive load may be increased and decreased as required to transform to said resistive level.
Claim 5
Dependent Claim
21 words
A coupler as defined by claim 2 wherein said capacitive means comprises a variable shunt capacitor and a variable series capacitor.
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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 |