H
ELECTRICITY
H03
ELECTRONIC CIRCUITRY
H03L
AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7/00
Automatic control of frequency or phase; Synchronisation
H03L7/06
using a reference signal applied to a frequency- or phase-locked loop
H03L7/08
Details of the phase-locked loop
H03L7/081
provided with an additional controlled phase shifter