Modulators in which carrier or one sideband is wholly or partially suppressed

Introduced: September 1968

Last revised: January 2006

Full Title

Amplitude modulation > Modulators in which carrier or one sideband is wholly or partially suppressed

Classification Context

Section:: ELECTRICITY
Class:: ELECTRONIC CIRCUITRY
Subclass:: MODULATION

Additional Content

Amplitude modulation by means of transit-time tube Amplitude modulation by means of a magnetron Amplitude modulation by deflection of electron beam in discharge tube Amplitude modulation by means of light-sensitive element Amplitude modulators with mechanically or acoustically driven parts Amplitude modulation by means of Hall-effect devices

2 direct subcodes

Child Classifications

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H03C 1/54 Balanced modulators, e.g. bridge type, ring type or double balanced type
H03C 1/6 with one sideband wholly or partially suppressed

Top Applicants

Top 10 applicants by patent filingsfor class H03, 2013–2023, worldwide · Source: EPO PATSTAT

QUALCOMM US 5,625
SAMSUNG ELECTRONICS COMPANY KR 5,496
MURATA MANUFACTURING COMPANY JP 5,478
HUAWEI TECHNOLOGIES COMPANY CN 3,383
INTEL CORPORATION US 3,091
TEXAS INSTRUMENTS US 3,070
MURATA MANUFACTURING COMPANY 2,722
SKYWORKS SOLUTIONS US 2,290
SEIKO EPSON CORPORATION 2,177
IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,158