IPC Subgroup
H03C 3/12 by means of a variable reactive element
Introduced: September 1968
Last revised: January 2006
Full Title
Angle modulation > by means of variable impedance > by means of a variable reactive element
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- MODULATION
4 direct subcodes
Child Classifications
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- H03C 3/14 simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit
- H03C 3/18 the element being a current-dependent inductor
- H03C 3/2 the element being a voltage-dependent capacitor
- H03C 3/22 the element being a semiconductor diode, e.g. varicap diode