US6836183B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chireix architecture using low impedance amplifiers
Assignee: J S Wight Inc
•
Filing: 2002-10-16
•
Granted: 2004-12-28
•
Expires: 2022-10-16
Abstract
Abstract Circuits and methods for use in amplifying amplitude and phase modulated signals. A circuit uses a combiner with dual parallel signal amplifiers feeding it. The signal amplifiers have a low output impedance while the combiner does not provide any isolation between its inputs from the signal amplifiers. As in other Chireix architectures, the signals from the signal amplifiers are phase modulated prior to being fed to the combiner. The combiner then combines these two signals and, depending on how these two signals are combined, the resulting output of the combiner is amplitude modulated. The signal amplifiers may be Class D or Class F amplifiers to provide high efficiency amplification of the signals.
Inventors
- 👤 James Stuart Wight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:21
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/21; H03F3/217; H03C; H03C1/00; H03C1/50; H03F1/00; H03F1/02; H03F1/0205; H03F1/0294; H03F3/211; H03F3/60; H03F3/602; H03F2200/00; H03F2200/537; H03F2200/541; H03F2203/00; H03F2203/20; H03F2203/21; H03F2203/211; H03F2203/21157
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
135 words
A circuit for providing amplification to signals, the circuit comprising: a signal combiner, wherein said combiner is a modified balanced magnetic transformer, said transformer being devoid of a center tap to ground connection; at least two signal amplifiers each receiving and amplifying a signal, said signal amplifiers being coupled in parallel to said combiner, each of said signal amplifiers having a low output impedance and acting as a voltage source, wherein each signal received and amplified by each of said signal amplifiers is phase modulated; outputs of each of said signal amplifiers are added by said combiner to produce a resulting signal, said signal amplifier outputs being coupled to terminals of an input winding of said transformer; and amplitude modulation of said resulting signal from said combiner is achieved by an addition of said outputs.
Claim 2
Dependent Claim
135 words
A circuit for providing amplification to signals, the circuit comprising: a signal combiner, wherein said combiner is a modified balanced magnetic transformer, said transformer being devoid of a center tap to ground connection; at least two signal amplifiers each receiving and amplifying a signal, said signal amplifiers being coupled in parallel to said combiner, each of said signal amplifiers having a low output impedance and acting as a voltage source, wherein each signal received and amplified by each of said signal amplifiers is phase modulated; outputs of each of said signal amplifiers are added by said combiner to produce a resulting signal, said signal amplifier outputs being coupled to terminals of an input winding of said transformer; and amplitude modulation of said resulting signal from said combiner is achieved by an addition of said outputs.
Claim 3
Dependent Claim
19 words
A circuit according to claim 1 wherein said combiner provides minimum isolation between said outputs of said signal amplifiers.
Claim 4
Dependent Claim
19 words
A circuit according to claim 1 wherein said combiner provides no isolation between said outputs of said signal amplifiers.
Claim 5
Dependent Claim
15 words
A circuit according to claim 1 wherein each of said amplifiers has switch mode operation.
Claim 6
Dependent Claim
26 words
A circuit according to claim 4 wherein each of said amplifiers is chosen from a group comprising: class D signal amplifiers; and class F signal amplifiers.
Claim 7
Dependent Claim
20 words
A circuit according to claim 1 wherein all of said at least two signal amplifiers are of the same type.
Claim 8
Dependent Claim
130 words
A circuit for providing amplification to signals, the circuit comprising: at least two signal amplifiers each receiving and amplifying a signal and each producing an amplifier output; and a signal combiner receiving each of said amplifier outputs in parallel, said signal combiner providing no isolation between said amplifier outputs, wherein each signal received and amplified by each of said signal amplifiers is phase modulated; said signal combiner is a modified balanced magnetic transformer, said transformer being devoid of a center tan to ground connection; said amplifier outputs are added by said combiner to produce a resulting signals, said amplifier outputs being coupled to terminals of an input winding of said transformer; and amplitude modulation of said resulting signal from said combiner is achieved by an addition of said amplifier outputs.
Claim 9
Dependent Claim
130 words
A circuit for providing amplification to signals, the circuit comprising: at least two signal amplifiers each receiving and amplifying a signal and each producing an amplifier output; and a signal combiner receiving each of said amplifier outputs in parallel, said signal combiner providing no isolation between said amplifier outputs, wherein each signal received and amplified by each of said signal amplifiers is phase modulated; said signal combiner is a modified balanced magnetic transformer, said transformer being devoid of a center tan to ground connection; said amplifier outputs are added by said combiner to produce a resulting signals, said amplifier outputs being coupled to terminals of an input winding of said transformer; and amplitude modulation of said resulting signal from said combiner is achieved by an addition of said amplifier outputs.
Claim 10
Dependent Claim
18 words
A circuit according to claim 7 wherein each of said signal amplifiers has a very low output impedance.
Claim 11
Dependent Claim
16 words
A circuit according to claim 8 wherein each of said signal amplifiers has switch mode operation.
Claim 12
Dependent Claim
27 words
A circuit according to claim 9 wherein each of said signal amplifiers is chosen from a group comprising: class D signal amplifiers; and class F signal amplifiers.
Claim 13
Dependent Claim
27 words
A circuit according to claims 7 wherein each of said signal amplifiers is chosen from a group comprising: class D signal amplifiers; and class F signal amplifiers.
Claim 14
Dependent Claim
20 words
A circuit according to claim 7 wherein all of said at least two signal amplifiers are of the same type.
References Cited (Backward Citations)
US2220201A
Cited
US2624041A
Cited
US3170127A
Cited
EP0011464A2
Cited
WO1982004507A1
Cited
US5621351A
Cited
US6133788A
Cited
US6285251B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-12-28 | 2008-06-28 | 2008-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-12-28 | 2012-06-28 | 2012-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-12-28 | 2016-06-28 | 2016-12-28 | $7700.00 | Window Closed / Lapsed |