Patent US5151852A successfully refreshed from Google Patents.
US5151852A
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Class E power amplifier
Assignee: Raytheon Co
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Filing: 1991-07-12
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Granted: 1992-09-29
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Expires: 2011-07-12
Abstract
Abstract A two-stage, Class E, fixed frequency, resonant, DC-to-DC power converter employing phase-shift control achieves outstanding performance over a full range from no load to full load. Each stage of the DC-to-DC power converter comprises a series inductor-diode network in parallel with a feed choke. Such network is connected between a power source input and a switching transistor, and it provides a fast discharge path for a resonant capacitor and lossless turn-on of the switching transistor in each power converter stage.
Inventors
- 👤 Boris S. Jacobson
- 👤 Raymond A. DiPerna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:01
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/01; Y; Y02; Y02B; Y02B70/00; Y02B70/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
189 words
A Class E power amplifier comprising: a DC power source (V IN ) having a common port and a voltage port; a parallel loaded network, having a first port, a second port and a third port, said first port being connected to said voltage port of said DC power source (V IN ) and said third port being connected to said common port of said DC power source (V IN ); switching means for turning ON and OFF in accordance with a control signal, said switching means having a first terminal connected to said common port of said DC power source and a second terminal connected to said second port of said parallel loaded network; a load means coupled to said second port of said parallel loaded network; and said parallel loaded network comprises a series circuit means in parallel with an inductor means connected between said first port and said second port and a capacitor means connected between said second port and said common port of said DC power source (V IN ), said series circuit means providing a fast discharge path for capacitance at said second port.
Claim 2
Dependent Claim
189 words
A Class E power amplifier comprising: a DC power source (V IN ) having a common port and a voltage port; a parallel loaded network, having a first port, a second port and a third port, said first port being connected to said voltage port of said DC power source (V IN ) and said third port being connected to said common port of said DC power source (V IN ); switching means for turning ON and OFF in accordance with a control signal, said switching means having a first terminal connected to said common port of said DC power source and a second terminal connected to said second port of said parallel loaded network; a load means coupled to said second port of said parallel loaded network; and said parallel loaded network comprises a series circuit means in parallel with an inductor means connected between said first port and said second port and a capacitor means connected between said second port and said common port of said DC power source (V IN ), said series circuit means providing a fast discharge path for capacitance at said second port.
Claim 3
Dependent Claim
40 words
The Class E power amplifier as recited in claim 1 wherein: said series circuit means comprises an inductor in series with a diode, said second port being connected to said diode and said first port being connected to said inductor.
Claim 4
Dependent Claim
28 words
The Class E power amplifier as recited in claim 1 wherein: said parallel loaded network comprises an RF choke means connected in parallel with said series circuit means.
Claim 5
Independent Claim
164 words
A method for providing a Class E power amplifier comprising the steps of: providing a DC power source (V IN ) having a common port and a voltage port; connecting a first port of a parallel loaded network to said voltage port of said DC power source (V IN ) and a third port of said parallel loaded network to said common port of said DC power source (V IN ); turning a switching means ON and OFF in accordance with a control signal, said switching means having a first terminal connected to said common port of said DC power source and a second terminal connected to a second port of said parallel loaded network; coupling a load means to said second port of said parallel loaded network; and providing a fast discharge path for capacitance at said second port of said parallel loaded network with a series circuit means connected between said first port and said second port of said parallel loaded network.
Claim 6
Independent Claim
164 words
A method for providing a Class E power amplifier comprising the steps of: providing a DC power source (V IN ) having a common port and a voltage port; connecting a first port of a parallel loaded network to said voltage port of said DC power source (V IN ) and a third port of said parallel loaded network to said common port of said DC power source (V IN ); turning a switching means ON and OFF in accordance with a control signal, said switching means having a first terminal connected to said common port of said DC power source and a second terminal connected to a second port of said parallel loaded network; coupling a load means to said second port of said parallel loaded network; and providing a fast discharge path for capacitance at said second port of said parallel loaded network with a series circuit means connected between said first port and said second port of said parallel loaded network.
Claim 7
Dependent Claim
56 words
The method as recited in claim 4 wherein: said step of providing a fast discharge path for capacitance with said series circuit means comprises said series circuit means having an inductor in series with a diode, said inductor connected to said first port and said diode connected to said second port of said parallel loaded network.
Claim 8
Dependent Claim
61 words
The method as recited in claim 4 wherein: said step of providing a series circuit means in said parallel loaded network comprises the step of said parallel loaded network having an inductor means in parallel with said series circuit means, and a capacitor means connected between said second port and said common port of said DC power source (V IN ).
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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) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |