IPC-Stelle: H03C [Version 2017.01]

SymbolTypTitel
HSKELECTRICITY
H03KLBASIC ELECTRONIC CIRCUITRY
H03CUKLMODULATION (masers or lasers H01S; coding, decoding or code conversion H03M)
H03C 1/00HGRAmplitude modulation (H03C 5/00, H03C 7/00 take precedence) [1, 2006.01]
H03C 1/02UGR1
.Details [1, 2006.01]
H03C 1/04UGR2
. .Means in, or combined with, modulating stage for reducing angle modulation [1, 2006.01]
H03C 1/06UGR2
. .Modifications of modulator to reduce distortion, e.g. by feedback, and clearly applicable to more than one type of modulator [1, 2006.01]
H03C 1/08UGR1
.by means of variable impedance element (H03C 1/28-H03C 1/34, H03C 1/46-H03C 1/52, H03C 1/62 take precedence) [1, 2006.01]
H03C 1/10UGR2
. .the element being a current-dependent inductor [1, 2006.01]
H03C 1/12UGR2
. .the element being a voltage-dependent capacitor [1, 2006.01]
H03C 1/14UGR2
. .the element being a diode [1, 2006.01]
H03C 1/16UGR1
.by means of discharge device having at least three electrodes (H03C 1/28-H03C 1/34, H03C 1/50, H03C 1/52, H03C 1/62 take precedence) [1, 2006.01]
H03C 1/18UGR2
. .carrier applied to control grid [1, 2006.01]
H03C 1/20UGR3
. . .modulating signal applied to anode [1, 2006.01]
H03C 1/22UGR3
. . .modulating signal applied to same grid [1, 2006.01]
H03C 1/24UGR3
. . .modulating signal applied to different grid [1, 2006.01]
H03C 1/26UGR3
. . .modulating signal applied to cathode [1, 2006.01]
H03C 1/28UGR1
.by means of transit-time tube [1, 2006.01]
H03C 1/30UGR2
. .by means of a magnetron [1, 2006.01]
H03C 1/32UGR1
.by deflection of electron beam in discharge tube [1, 2006.01]
H03C 1/34UGR1
.by means of light-sensitive element [1, 2006.01]
H03C 1/36UGR1
.by means of semiconductor device having at least three electrodes (H03C 1/34, H03C 1/50, H03C 1/52, H03C 1/62 take precedence) [1, 2006.01]
H03C 1/38UGR2
. .carrier applied to base of a transistor [1, 2006.01]
H03C 1/40UGR3
. . .modulating signal applied to collector [1, 2006.01]
H03C 1/42UGR3
. . .modulating signal applied to base [1, 2006.01]
H03C 1/44UGR3
. . .modulating signal applied to emitter [1, 2006.01]
H03C 1/46UGR1
.Modulators with mechanically-driven or acoustically-driven parts [1, 2006.01]
H03C 1/48UGR1
.by means of Hall-effect devices [1, 2006.01]
H03C 1/50UGR1
.by converting angle modulation to amplitude modulation (H03C 1/28-H03C 1/34, H03C 1/46, H03C 1/48 take precedence) [1, 2006.01]
H03C 1/52UGR1
.Modulators in which carrier or one sideband is wholly or partially suppressed (H03C 1/28-H03C 1/34, H03C 1/46, H03C 1/48 take precedence) [1, 2006.01]
H03C 1/54UGR2
. .Balanced modulators, e.g. bridge type, ring type or double balanced type [1, 2006.01]
H03C 1/56UGR3
. . .comprising variable two-pole elements only [1, 2006.01]
H03C 1/58UGR4
. . . .comprising diodes [1, 2006.01]
H03C 1/60UGR2
. .with one sideband wholly or partially suppressed [1, 2006.01]
H03C 1/62UGR1
.Modulators in which amplitude of carrier component in output is dependent upon strength of modulating signal, e.g. no carrier output when no modulating signal is present (H03C 1/28-H03C 1/34, H03C 1/46, H03C 1/48 take precedence) [1, 2006.01]
H03C 3/00HGRAngle modulation (H03C 5/00, H03C 7/00 take precedence) [1, 2006.01]
H03C 3/02UGR1
.Details [1, 2006.01]
H03C 3/04UGR2
. .Means in, or combined with, modulating stage for reducing amplitude modulation [1, 2006.01]
H03C 3/06UGR2
. .Means for changing frequency deviation [1, 2006.01]
H03C 3/08UGR2
. .Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator [1, 2006.01]
H03C 3/09UGR2
. .Modifications of modulator for regulating the mean frequency [3, 2006.01]
H03C 3/10UGR1
.by means of variable impedance (H03C 3/30-H03C 3/38 take precedence) [1, 2006.01]
H03C 3/12UGR2
. .by means of a variable reactive element [1, 2006.01]
H03C 3/14UGR3
. . .simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit [1, 2006.01]
H03C 3/16UGR4
. . . .in which the active element simultaneously serves as the active element of an oscillator [1, 2006.01]
H03C 3/18UGR3
. . .the element being a current-dependent inductor [1, 2006.01]
H03C 3/20UGR3
. . .the element being a voltage-dependent capacitor [1, 2006.01]
H03C 3/22UGR3
. . .the element being a semiconductor diode, e.g. varicap diode [1, 2006.01]
H03C 3/24UGR2
. .by means of a variable resistive element, e.g. tube [1, 2006.01]
H03C 3/26UGR3
. . .comprising two elements controlled in push-pull by modulating signal [1, 2006.01]
H03C 3/28UGR2
. .using variable impedance driven mechanically or acoustically [1, 2006.01]
H03C 3/30UGR1
.by means of transit-time tube [1, 2006.01]
H03C 3/32UGR2
. .the tube being a magnetron [1, 2006.01]
H03C 3/34UGR1
.by deflection of electron beam in discharge tube [1, 2006.01]
H03C 3/36UGR1
.by means of light-sensitive element [1, 2006.01]
H03C 3/38UGR1
.by converting amplitude modulation to angle modulation [1, 2006.01]
H03C 3/40UGR2
. .using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated [1, 2006.01]
H03C 3/42UGR1
.by means of electromechanical devices (H03C 3/28 takes precedence) [3, 2006.01]
H03C 5/00HGRAmplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal (H03C 7/00 takes precedence) [1, 2006.01]
H03C 5/02UGR1
.by means of transit-time tube [1, 2006.01]
H03C 5/04UGR2
. .the tube being a magnetron [1, 2006.01]
H03C 5/06UGR1
.by deflection of electron beam in discharge tube [1, 2006.01]
H03C 7/00HGRModulating electromagnetic waves (devices or arrangements for the modulation of light G02F 1/00) [1, 2006.01]
H03C 7/02UGR1
.in transmission line, waveguide, cavity resonator, or radiation field of aerial [1, 2006.01]
H03C 7/04UGR2
. .Polarisation of transmitted wave being modulated [1, 2006.01]
H03C 99/00HGRSubject matter not provided for in other groups of this subclass [2006.01]