Patent US4480229A successfully refreshed from Google Patents.
US4480229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplifier arrangement with parallel-operated amplifier sections
Assignee: US Philips Corp
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Filing: 1982-12-20
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Granted: 1984-10-30
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Expires: 2002-12-20
Abstract
Abstract By adding the difference between output and input of the one amplifier section to the output signal by means of a subsequent amplifier section a ring of amplifier sections can be formed which compensate for each other's distortion.
Inventors
- 👤 Theodorus J. Van Kessel
- 👤 Nico V. Franssen, deceased
- 👤 administrator by Friedrich J. De Haan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:53
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/21; H03F3/211; H03F1/00; H03F1/32; H03F1/3223; H03F3/68
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
236 words
An amplifier arrangement, comprising: a signal input coupled to inputs of n amplifier sections which sections include outputs connected single-ended to a common output circuit through which the output signal currents of the amplifier sections are passed in the same phase; a resistor connected between the output of each amplifier section and the common output circuit; each amplifier section also including a difference element having a first input, a second input, and an output for supplying a corresponding compensation signal, the first input of the difference element being coupled to the input of the corresponding amplifier section; characterized in that each amplifier section also includes a negative feedback voltage which depends on the voltage across the output circuit and across the corresponding resistor, and an attenuator coupled to the corresponding amplifier output and also coupled to the second input of the corresponding difference element so that the feedback voltage of the k th -amplifier section is applied to the second input of the corresponding difference element, and that the corresponding compensation signal of the k th -amplifier section is applied to the input of the (k+1) th -amplifier section (k ranging from 1 to n, and n being at least 2) through a summator coupled to both the input of the (k+1) th -amplifier section and the signal input of the arrangement, whereby the arrangement has a low distortion and a high output power during operation.
Claim 2
Dependent Claim
236 words
An amplifier arrangement, comprising: a signal input coupled to inputs of n amplifier sections which sections include outputs connected single-ended to a common output circuit through which the output signal currents of the amplifier sections are passed in the same phase; a resistor connected between the output of each amplifier section and the common output circuit; each amplifier section also including a difference element having a first input, a second input, and an output for supplying a corresponding compensation signal, the first input of the difference element being coupled to the input of the corresponding amplifier section; characterized in that each amplifier section also includes a negative feedback voltage which depends on the voltage across the output circuit and across the corresponding resistor, and an attenuator coupled to the corresponding amplifier output and also coupled to the second input of the corresponding difference element so that the feedback voltage of the k th -amplifier section is applied to the second input of the corresponding difference element, and that the corresponding compensation signal of the k th -amplifier section is applied to the input of the (k+1) th -amplifier section (k ranging from 1 to n, and n being at least 2) through a summator coupled to both the input of the (k+1) th -amplifier section and the signal input of the arrangement, whereby the arrangement has a low distortion and a high output power during operation.
Claim 3
Dependent Claim
44 words
An amplifier arrangement as claimed in claim 1, wherein each amplifier section has a low internal output impedance, characterized in that the arrangement also comprises means for applying a negative voltage feedback between the common output circuit and the input of the amplifier arrangement.
References Cited (Backward Citations)
US4321552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |