H03J7/047 - CPC Classification Index

ClassID:

221225 ⎘

H03J7/047 - CPC Classification

Classification description:

Automatic frequency control; Automatic scanning over a band of frequencies; Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant Automatic frequency control using an auxiliary signal, e.g. low frequency scanning of the locking range or superimposing a special signal on the input signal

Recent Application in this class:

20250105824

UNIVERSAL AUTOMATIC FREQUENCY CONTROL FOR MULTI-CHANNEL RECEIVERS

20230253954

Universal automatic frequency control for multi-channel receivers

20210143799

Universal automatic frequency control for multi-channel receivers

20180115305

Methods and apparatus supporting controlled transmission and reception of messages

20160248401

Antenna tuning in a modular portable communication device

20130285714

Tuner

20130162466

Methods to extend the frequency lock range of a received RF signal using a preamble-based frequency estimate

20110217934

MOBILE RADIO COMMUNICATION SYSTEM, MOBILE COMMUNICATION DEVICE, AND FREQUENCY CONTROL METHOD THEREOF

20050195917

Method and apparatus for crystal drift compensation

16655890

Universal automatic frequency control for multi-channel receivers