H03C MODULATION
Introduced: September 1968
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- MODULATION
Description
H03C covers electronic circuits and devices for modulating signals, where information is encoded onto a carrier wave by varying one or more of its characteristics (amplitude, frequency, phase, or pulse properties). This subclass encompasses modulator designs, modulation techniques, and integrated circuit implementations across analog and digital domains, including amplitude modulation (AM), frequency modulation (FM), phase modulation (PM), and pulse modulation methods. Related demodulation circuits are classified separately under H03D, while specific modulation applications in telecommunications, broadcasting, and radar systems may be further detailed in their respective technology classes.
Additional Content
Masers, lasers Coding, decoding or code conversion, in general
Related Keywords
5 direct subcodes
Child Classifications
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- H03C 1/00 Amplitude modulation
- H03C 3/00 Angle modulation
- H03C 5/00 Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
- H03C 7/00 Modulating electromagnetic waves
- H03C 99/00 Subject matter not provided for in other groups of this subclass
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