US5216698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic device for the phase-locking of a circuit
Assignee: Thales SA
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Filing: 1992-03-30
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Granted: 1993-06-01
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Expires: 2012-03-30
Abstract
Abstract A phase-locking device comprises a "fast" loop providing for the correction of the transient disturbances and a "slow" loop providing for correction on a wide range of phase shifts.
Inventors
- 👤 Alain Boulanger
- 👤 Pierre Guern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:44
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/0805; H03L7/081; H03L7/0812
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
106 words
An automatic device for the phase-locking of a circuit, said device comprising at least one servo loop in a bypass connection on the circuit to be phase-locked, wherein aid device comprises a "slow" loop, comprising sequentially connected in series, a delay line, a phase shifter, a 0/180° inverter, a filter, an amplifier, and means for controlling the 0/180° inverter to invert a phase provided by said 0/180° inverter at a time when a range of phase shift provided by said phase shifter is exceeded and for controlling phase shift provided by said phase shifter to be zero at said time, comprising a detection and control device.
Claim 2
Dependent Claim
106 words
An automatic device for the phase-locking of a circuit, said device comprising at least one servo loop in a bypass connection on the circuit to be phase-locked, wherein aid device comprises a "slow" loop, comprising sequentially connected in series, a delay line, a phase shifter, a 0/180° inverter, a filter, an amplifier, and means for controlling the 0/180° inverter to invert a phase provided by said 0/180° inverter at a time when a range of phase shift provided by said phase shifter is exceeded and for controlling phase shift provided by said phase shifter to be zero at said time, comprising a detection and control device.
Claim 3
Dependent Claim
47 words
A device according to claim 1, wherein the detection and control device includes a circuit to detect the crossing of phase thresholds, is connected to the output of the amplifier of the "slow" loop and connected to the input of a flip-flop circuit controlling the 0/180° inverter.
Claim 4
Dependent Claim
25 words
A device according to claim 2, wherein a circuit for synchronization with an external signal is connected between the detection circuit and the flip-flop circuit.
Claim 5
Dependent Claim
36 words
A device according to claim 1, wherein a phase-shift measuring device is positioned between the output of the circuit to be phase-locked and the delay line, and is connected to the input of the "slow" loop.
Claim 6
Dependent Claim
25 words
A device according to claim 1, wherein the filter results from the passband limitation characteristics of the components used by other circuits of the loop.
Claim 7
Dependent Claim
63 words
A device according to claim 1, further comprising: a "fast" servo loop providing for the correction of the transient type fast disturbances and phase noises, said fast servo loop coupled to receive an input signal having a phase equal to a phase difference between a phase at an output at said bypass connection and a phase at an output of said 0/180° inverter.
Claim 8
Dependent Claim
42 words
A device according to claim 6, wherein said fast servo loop comprises sequentially in series, a fast loop filter, a fast loop amplifier, a fast loop phase shifter, and said input signal is coupled to an input of sad fast loop filter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-31 | 1996-11-30 | 1997-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-31 | 2000-11-30 | 2001-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-31 | 2004-11-30 | 2005-06-01 | $7700.00 | Window Closed / Lapsed |