US3849676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase-corrector
Assignee: Thales SA
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Filing: 1973-10-16
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Granted: 1974-11-19
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Expires: 1993-10-16
Abstract
Abstract The signal to be corrected in phase is applied in phase quadrature to a first channel comprising a linear attenuator and to a second channel comprising two diodes connected in parallel and in reverse directions as concerns the input a-c current of this channel and in series as far as the bias is concerned, the two diodes receiving from a source the same bias voltage. The output signals from the two channels are added in an adder.
Inventors
- 👤 C Bareyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:28
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/18; H03H7/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
A phase corrector comprising means, having an input and first and second output terminals, for applying an input signal in phase quadrature to said first and second terminals, the signal appearing at said first terminal lagging in phase relatively to the signal appearing at said second terminal; a linear attenuator coupled to said first terminal; a non-linear channel coupled to said second terminal and including a non-linear device comprising a d-c series arrangement of two diodes, said two diodes being connected in the same direction relatively to a d-c current applied to said series arrangement, and being coupled in parallel and in reverse directions relatively to the a-c current appearing at said second terminal, means for biasing said diodes by the same d-c voltage value and in the same direction, and an adder for adding together the output signals from said linear attenuator and from said non-linear channel.
Claim 2
Dependent Claim
148 words
A phase corrector comprising means, having an input and first and second output terminals, for applying an input signal in phase quadrature to said first and second terminals, the signal appearing at said first terminal lagging in phase relatively to the signal appearing at said second terminal; a linear attenuator coupled to said first terminal; a non-linear channel coupled to said second terminal and including a non-linear device comprising a d-c series arrangement of two diodes, said two diodes being connected in the same direction relatively to a d-c current applied to said series arrangement, and being coupled in parallel and in reverse directions relatively to the a-c current appearing at said second terminal, means for biasing said diodes by the same d-c voltage value and in the same direction, and an adder for adding together the output signals from said linear attenuator and from said non-linear channel.
Claim 3
Dependent Claim
29 words
A phase-corrector as claimed in claim 1, wherein said linear attenuator is constituted by a PIN diode and means for applying a d-c bias voltage to said PIN diode.
Claim 4
Dependent Claim
185 words
An amplifying arrangement for a frequency modulated signal, comprising, in a series arrangement, two correctors followed and a travelling wave tube, one of said correctors being a phase corrector and the other one being an amplitude corrector, said phase corrector comprising means, having an input and first and second output terminals, for applying an input signal in phase quadrature to said first and second terminals, the signal appearing at said first terminal lagging in phase relatively to the signal appearing at said second terminal; a linear attenuator coupled to said first terminal; a non-linear channel coupled to said second terminal and including a non-linear device comprising a d-c series arrangement of two diodes, said two diodes being connected in the same direction relatively to a d-c current applied to said series arrangement, and being coupled in parallel and in reverse directions relatively to the a-c current appearing at said second terminal, means for biasing said diodes by the same d-c voltage value and in the same direction, and an adder for adding together the output signals from said linear attenuator and from said non-linear channel.
Claim 5
Dependent Claim
185 words
An amplifying arrangement for a frequency modulated signal, comprising, in a series arrangement, two correctors followed and a travelling wave tube, one of said correctors being a phase corrector and the other one being an amplitude corrector, said phase corrector comprising means, having an input and first and second output terminals, for applying an input signal in phase quadrature to said first and second terminals, the signal appearing at said first terminal lagging in phase relatively to the signal appearing at said second terminal; a linear attenuator coupled to said first terminal; a non-linear channel coupled to said second terminal and including a non-linear device comprising a d-c series arrangement of two diodes, said two diodes being connected in the same direction relatively to a d-c current applied to said series arrangement, and being coupled in parallel and in reverse directions relatively to the a-c current appearing at said second terminal, means for biasing said diodes by the same d-c voltage value and in the same direction, and an adder for adding together the output signals from said linear attenuator and from said non-linear channel.
Claim 6
Dependent Claim
74 words
An amplifying arrangement as claimed in claim 3, wherein said amplitude corrector comprises a d-c series arrangement of two diodes, said two diodes being connected in the same direction relatively to a d-c current applied to said series arrangement, and being coupled in parallel and in reverse directions relatively to the a-c current of the input signal, and means for biasing said diodes by the same d-c voltage value and in the same direction.
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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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |