Inject synchronous narrowband reproducible phase locked looped

Details Inject synchronous narrowband reproducible phase locked looped Inject synchronous narrowband reproducible phase locked looped

2005-08-02

2005-08-02

Kinkead, Arnold (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural a.f.s. for a single oscillator

C331S016000, C331S034000, C331S00100A, C327S156000, C327S157000, C327S159000, C375S376000, C369S047280, C369S124140

Reexamination Certificate

active

06924705

ABSTRACT:
The invention discloses an injection synchronization narrowband regenerative phase-locked loop (ISNRPLL) circuit. The circuit includes a synchronous oscillation loop composed by the connecting of an injection synchronization narrowband regenerative voltage-controlled oscillator (ISNRVCO) and an exclusive-OR double frequency circuit; a phase-locked loop composed by the connecting of a digital phase detector, a charge pump and a loop filter, and a D type flip-flop for outputting data. The ISNRVCO does not ask much of the syntonic loop, and can be implemented by integrating inductance on a chip. Preferably, it can be integrated completely by using the deep submicron digital CMOS technology, so there are only a few external elements. Simulation shows that the capture range, capture time and phase noise etc. of the INSRPLL are all better than the conventional phase-locked loop circuit and can be used in GHz level high-speed clock recovery integrated circuit.

REFERENCES:
patent: 4347484 (1982-08-01), Vandegraaf
patent: 5172357 (1992-12-01), Taguchi
patent: 6054903 (2000-04-01), Fiedler

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