H03F2203/211 - CPC Classification Index

ClassID:

219719 ⎘

H03F2203/211 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by; Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers

Sub-classes:

H03F2203/21103 » An impedance adaptation circuit being added at the input of a power amplifier stage 96
H03F2203/21106 » An input signal being distributed in parallel over the inputs of a plurality of power amplifiers 378
H03F2203/21109 » An input signal being distributed by switching to a plurality of paralleled power amplifiers 86
H03F2203/21112 » An filter circuit being added at the input of a power amplifier stage 62
H03F2203/21115 » An input signal dependant signal being measured by current measuring at the input of a power amplifier 4
H03F2203/21118 » An input signal dependant signal being measured by power measuring at the input of a power amplifier 6
H03F2203/21121 » An input signal dependant signal being measured by voltage measuring at the input of a power amplifier 1
H03F2203/21124 » A parallel resonance circuit being coupled at the input of a power amplifier 6
H03F2203/21127 » the input bias current of a power amplifier being controlled, e.g. by an active current source or a current mirror 47
H03F2203/21131 » the input bias voltage of a power amplifier being controlled, e.g. by a potentiometer or an emitter follower 65
H03F2203/21133 » A series resonance circuit being coupled at the input of a power amplifier 2
H03F2203/21136 » An input signal of a power amplifier being on/off switched 34
H03F2203/21139 » An impedance adaptation circuit being added at the output of a power amplifier stage 209
H03F2203/21142 » Output signals of a plurality of power amplifiers are parallel combined to a common output 302
H03F2203/21145 » Output signals are combined by switching a plurality of paralleled power amplifiers to a common output 93
H03F2203/21148 » An output signal of a power amplifier being controlled by controlling current signal, e.g. by controlled current mirror 1
H03F2203/21151 » An output signal of a power amplifier being controlled by controlling power signal, e.g. by an inductive coupler 11
H03F2203/21154 » An output signal of a power amplifier being controlled by controlling voltage signal 12
H03F2203/21157 » A filter circuit being added at the output of a power amplifier stage 141
H03F2203/21161 » An output signal dependant signal being measured by current measuring at the output of a power amplifier 2
H03F2203/21163 » An output signal dependant signal being measured by power measuring, e.g. by an inductive coupler, at the output of a power amplifier 8
H03F2203/21166 » An output signal dependant signal being measured by voltage measuring at the output of a power amplifier 2
H03F2203/21169 » A parallel resonance circuit being coupled at the output of a power amplifier 8
H03F2203/21172 » A series resonance circuit being coupled at the output of a power amplifier 5
H03F2203/21175 » An output signal of a power amplifier being on/off switched 44
H03F2203/21178 » Power transistors are made by coupling a plurality of single transistors in parallel 44
H03F2203/21181 » the supply current of a power amplifier being continuously controlled, e.g. by controlling current sources or resistors 19
H03F2203/21184 » the supply current of a power amplifier being continuously measured, e.g. by a resistor, a current mirror, to produce a controlling signal 4
H03F2203/21187 » the supply current of a power amplifier being measured discontinuously in time, e.g. by sampling, to produce a controlling signal 1
H03F2203/21191 » the supply current of a power amplifier being switchable controlled, e.g. by choosing different current sources or resistors 5
H03F2203/21193 » the supply voltage of a power amplifier being continuously controlled, e.g. by an active potentiometer 41
H03F2203/21196 » the supply voltage of a power amplifier being switchable controlled 23

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