IPC Main Group
H03B 5/00 Generation of oscillations using amplifier with regenerative feedback from output to input
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
Additional Content
Glossary
Tank circuit a parallel LC circuit, particularly in a high power transmitter circuit
Limiting references
Generation of oscillations using transit-time effects Generation of oscillations using galvano-magnetic devices
5 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H03B 5/02 Details
- H03B 5/08 with frequency-determining element comprising lumped inductance and capacitance
- H03B 5/18 with frequency-determining element comprising distributed inductance and capacitance
- H03B 5/2 with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
- H03B 5/3 with frequency-determining element being electromechanical resonator
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