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2. Phase-locked loop - Wikipedia

   en.wikipedia.org/wiki/Phase-locked_loop

   A phase-locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is fixed relative to the phase of an input signal. Keeping the input and output phase in lockstep also implies keeping the input and output frequencies the same, thus a phase-locked loop can also track an input frequency.

3. Phase-locked loop range - Wikipedia

   en.wikipedia.org/wiki/Phase-locked_loop_range

   In the classic books on phase-locked loops, [1] [2] published in 1966, such concepts as hold-in, pull-in, lock-in, and other frequency ranges for which PLL can achieve lock, were introduced. They are widely used nowadays (see, e.g. contemporary engineering literature [ 3 ] [ 4 ] and other publications).

4. Charge-pump phase-locked loop - Wikipedia

   en.wikipedia.org/wiki/Charge-pump_phase-locked_loop

   Following Gardner's results, by analogy with the Egan conjecture on the pull-in range of type 2 APLL, Amr M. Fahim conjectured in his book [8]: 6 that in order to have an infinite pull-in(capture) range, an active filter must be used for the loop filter in CP-PLL (Fahim-Egan's conjecture on the pull-in range of type II CP-PLL).

5. Floyd M. Gardner - Wikipedia

   en.wikipedia.org/wiki/Floyd_M._Gardner

   Floyd M. Gardner (1929 – 2021) was a well-known expert and author in the area of phase lock loops (PLLs). The first, second, and third editions of his book Phaselock Techniques [1] [2] [3] have been highly influential and remain a well-recognized reference among electrical engineers specializing in areas involving PLLs.

6. Phase detector - Wikipedia

   en.wikipedia.org/wiki/Phase_detector

   A phase detector or phase comparator is a frequency mixer, analog multiplier or logic circuit that generates a signal which represents the difference in phase between two signal inputs. The phase detector is an essential element of the phase-locked loop (PLL).

7. Voltage-controlled oscillator - Wikipedia

   en.wikipedia.org/wiki/Voltage-controlled_oscillator

   Jitter is a form of phase noise that must be minimised in applications such as radio receivers, transmitters and measuring equipment. When a wider selection of clock frequencies is needed the VCXO output can be passed through digital divider circuits to obtain lower frequencies or be fed to a phase-locked loop (PLL). ICs containing both a VCXO ...

8. PLL multibit - Wikipedia

   en.wikipedia.org/wiki/PLL_multibit

   A PLL multibit or multibit PLL is a phase-locked loop (PLL) which achieves improved performance compared to a unibit PLL by using more bits.Unibit PLLs use only the most significant bit (MSB) of each counter's output bus to measure the phase, while multibit PLLs use more bits. [1]

9. Costas loop - Wikipedia

   en.wikipedia.org/wiki/Costas_loop

   A Costas loop is a phase-locked loop (PLL) based circuit which is used for carrier frequency recovery from suppressed-carrier modulation signals (e.g. double-sideband suppressed carrier signals) and phase modulation signals (e.g. BPSK, QPSK).