US5151852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 07:53
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 ).
References Cited (Backward Citations)
US3919656A
Cited
US4318164A
Cited
US4607323A
Cited
US4642750A
Cited
US4685041A
Cited
US4891746A
Cited
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 |