H03F2200/00 - CPC Classification Index

ClassID:

219516 ⎘

H03F2200/00 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers

Sub-classes:

H03F2200/03 » the amplifier being designed for audio applications 1,4K
H03F2200/06 » A balun, i.e. balanced to or from unbalanced converter, being present at the input of an amplifier 152
H03F2200/09 » A balun, i.e. balanced to or from unbalanced converter, being present at the output of an amplifier 211
H03F2200/102 » A non-specified detector of a signal envelope being used in an amplifying circuit 1,1K
H03F2200/105 » A non-specified detector of the power of a signal being used in an amplifying circuit 403
H03F2200/108 » A coil being added in the drain circuit of a FET amplifier stage, e.g. for noise reducing purposes 191
H03F2200/111 » the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not 613
H03F2200/114 » the amplifier comprising means for electro-magnetic interference [EMI] protection 63
H03F2200/117 » A coil being coupled in a feedback path of an amplifier stage 24
H03F2200/12 » A bias circuit for some stages being shown using transmission lines 42
H03F2200/121 » A transistor in common gate configuration being used in a feedback circuit of an amplifier stage 6
H03F2200/123 » A difference signal between an output and an input signal of an amplifier being coupled back at the input of the amplifier 5
H03F2200/126 » A diode being coupled in a feedback path of an amplifier stage, e.g. active or passive diode 22
H03F2200/129 » there being a feedback over the complete amplifier 676
H03F2200/132 » Hybrid coupler placed in a feedback circuit of an amplifier 12
H03F2200/135 » there being a feedback over one or more internal stages in the global amplifier 123
H03F2200/138 » the feedback circuit comprising a parallel resonance circuit 15
H03F2200/141 » the feedback circuit of the amplifier stage comprising a resistor and a capacitor in series, at least one of them being an active one 19
H03F2200/144 » the feedback circuit of the amplifier stage comprising a passive resistor and passive capacitor 139
H03F2200/147 » the feedback circuit comprising a series resonance circuit 12
H03F2200/15 » the supply or bias voltage or current at the drain side of a FET being continuously controlled by a controlling signal 135
H03F2200/151 » A source follower being used in a feedback circuit of an amplifier stage 14
H03F2200/153 » Feedback used to stabilise the amplifier 163
H03F2200/156 » One or more switches are realised in the feedback circuit of the amplifier stage 133
H03F2200/159 » the feedback circuit being closed during a switching time 19
H03F2200/162 » FETs are biased in the weak inversion region 15
H03F2200/165 » A filter circuit coupled to the input of an amplifier 430
H03F2200/168 » Two amplifying stages are coupled by means of a filter circuit 127
H03F2200/171 » A filter circuit coupled to the output of an amplifier 626
H03F2200/174 » Floating gate implemented in MOS technology 13
H03F2200/177 » Folded cascode realised by a folding coil 0
H03F2200/18 » the bias of the gate of a FET being controlled by a control signal 624
H03F2200/181 » A coil being added in the gate circuit of a FET amplifier stage, e.g. for noise reducing purposes 24
H03F2200/183 » the amplifier comprising a gated diode 6
H03F2200/186 » the ground, reference potential being controlled 9
H03F2200/189 » the ground, reference or shield potential difference between different chips being controlled 11
H03F2200/192 » A hybrid coupler being used at the input of an amplifier circuit 119
H03F2200/195 » A hybrid coupler being used as power measuring circuit at the input of an amplifier circuit 23
H03F2200/198 » A hybrid coupler being used as coupling circuit between stages of an amplifier circuit 107
H03F2200/201 » A hybrid coupler being used as power measuring inter-stage circuit between two stages of an amplifier circuit 5
H03F2200/204 » A hybrid coupler being used at the output of an amplifier circuit 245
H03F2200/207 » A hybrid coupler being used as power measuring circuit at the output of an amplifier circuit 134
H03F2200/21 » Bias resistors are added at the input of an amplifier 100
H03F2200/211 » the input of an amplifier can be attenuated by a continuously controlled transistor attenuator 75
H03F2200/213 » A variable capacitor being added in the input circuit, e.g. base, gate, of an amplifier stage 88
H03F2200/216 » A coil being added in the input circuit, e.g. base, gate, of an amplifier stage 45
H03F2200/219 » Follower transistors are added at the input of the amplifier, e.g. source or emitter followers 15
H03F2200/222 » A circuit being added at the input of an amplifier to adapt the input impedance of the amplifier 1,1K
H03F2200/225 » the input circuit of an amplifying stage comprising an LC-network 106
H03F2200/228 » A measuring circuit being coupled to the input of an amplifier 74
H03F2200/231 » the input of an amplifier can be switched on or off by a switch to amplify or not an input signal 69
H03F2200/234 » the input amplifying stage being one or more operational amplifiers 51
H03F2200/237 » A parallel resonance being added in series in the input circuit, e.g. base, gate, of an amplifier stage 14
H03F2200/24 » the supply or bias voltage or current at the source side of a FET being continuously controlled by a controlling signal 36
H03F2200/241 » A parallel resonance being added in shunt in the input circuit, e.g. base, gate, of an amplifier stage 8
H03F2200/243 » A series resonance being added in series in the input circuit, e.g. base, gate, of an amplifier stage 31
H03F2200/246 » A series resonance being added in shunt in the input circuit, e.g. base, gate, of an amplifier stage, e.g. as a trap 7
H03F2200/249 » A switch coupled in the input circuit of an amplifier being controlled by a circuit, e.g. feedback circuitry being controlling the switch 67
H03F2200/252 » Multiple switches coupled in the input circuit of an amplifier are controlled by a circuit, e.g. feedback circuitry being controlling the switch 65
H03F2200/255 » Amplifier input adaptation especially for transmission line coupling purposes, e.g. impedance adaptation 160
H03F2200/258 » the input of the amplifier has voltage limiting means 32
H03F2200/261 » Amplifier which being suitable for instrumentation applications 385
H03F2200/264 » An operational amplifier based integrator or transistor based integrator being used in an amplifying circuit 77
H03F2200/267 » A capacitor based passive circuit, e.g. filter, being used in an amplifying circuit 240
H03F2200/27 » A biasing circuit node being switched in an amplifier circuit 186
H03F2200/271 » the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses capacitive isolation means, e.g. capacitors 60
H03F2200/273 » the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses inductive isolation means, e.g. transformers 23
H03F2200/276 » the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses optical isolation means, e.g. optical couplers 3
H03F2200/279 » the level shifting stage between two amplifying stages being realised by an explicit differential amplifier 5
H03F2200/282 » the level shifting stage between two amplifying stages being realised by a diode 1
H03F2200/285 » the level shifting stage between two amplifying stages being realised by an emitter follower 3
H03F2200/288 » the level shifting stage between two amplifying stages being realised by a resistor or potentiometer 4
H03F2200/291 » the level shifting stage between two amplifying stages being realised by a source follower 5
H03F2200/294 » the amplifier being a low noise amplifier [LNA] 2,1K
H03F2200/297 » the loading circuit of an amplifying stage comprising a capacitor 103
H03F2200/301 » the loading circuit of an amplifying stage comprising a coil 86
H03F2200/303 » the loading circuit of an amplifying stage comprising a diode or diode coupled transistor 16
H03F2200/306 » the loading circuit of an amplifying stage being a parallel resonance circuit 27
H03F2200/309 » the loading circuit of an amplifying stage being a series resonance circuit 16
H03F2200/31 » the switching power stage comprising circuitry for emulating the behaviour of a bootstrap diode 5
H03F2200/312 » the loading circuit of an amplifying stage comprising one or more switches 33
H03F2200/315 » the loading circuit of an amplifying stage comprising a transmission line 26
H03F2200/318 » A matching circuit being used as coupling element between two amplifying stages 472
H03F2200/321 » Use of a microprocessor in an amplifier circuit or its control circuit 252
H03F2200/324 » An amplitude modulator or demodulator being used in the amplifier circuit 109
H03F2200/327 » Amplitude shift keying modulation being used in an amplifying circuit 9
H03F2200/33 » Bridge form coupled amplifiers; H-form coupled amplifiers 31
H03F2200/331 » Sigma delta modulation being used in an amplifying circuit 283
H03F2200/333 » A frequency modulator or demodulator being used in the amplifier circuit 62
H03F2200/336 » A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit 646
H03F2200/339 » Pulse amplitude modulation being used in an amplifying circuit 22
H03F2200/342 » Pulse code modulation being used in an amplifying circuit 4
H03F2200/345 » Pulse density modulation being used in an amplifying circuit 24
H03F2200/348 » Pulse frequency modulation being used in an amplifying circuit 12
H03F2200/351 » Pulse width modulation being used in an amplifying circuit 533
H03F2200/354 » the amplifier comprising MOS which are biased in the moderate inversion region 1
H03F2200/357 » the amplifier comprising MOS which are biased in the weak inversion region 12
H03F2200/36 » the amplifier comprising means for increasing the bandwidth 285
H03F2200/361 » Transistor with multiple collectors 2
H03F2200/363 » Transistor with multiple emitters 2
H03F2200/366 » Multiple MOSFETs are coupled in parallel 88
H03F2200/369 » A negative impedance circuit being added to an amplifier circuit 12
H03F2200/372 » Noise reduction and elimination in amplifier 754
H03F2200/375 » Circuitry to compensate the offset being present in an amplifier 370
H03F2200/378 » A variable capacitor being added in the output circuit, e.g. collector, drain, of an amplifier stage 114
H03F2200/381 » An active variable resistor, e.g. controlled transistor, being coupled in the output circuit of an amplifier to control the output 26
H03F2200/384 » Amplifier without output filter, i.e. directly connected to the load 14
H03F2200/387 » A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier 1,6K
H03F2200/39 » Different band amplifiers are coupled in parallel to broadband the whole amplifying circuit 45
H03F2200/391 » the output circuit of an amplifying stage comprising an LC-network 291
H03F2200/393 » A measuring circuit being coupled to the output of an amplifier 102
H03F2200/396 » the output of an amplifier can be switched on or off by a switch to couple the output signal to a load 25
H03F2200/399 » A parallel resonance being added in shunt in the output circuit, e.g. base, gate, of an amplifier stage 41
H03F2200/402 » A series resonance being added in shunt in the output circuit, e.g. base, gate, of an amplifier stage 23
H03F2200/405 » the output amplifying stage of an amplifier comprising more than three power stages 235
H03F2200/408 » the output amplifying stage of an amplifier comprising three power stages 356
H03F2200/411 » the output amplifying stage of an amplifier comprising two power stages 663
H03F2200/414 » A switch being coupled in the output circuit of an amplifier to switch the output on/off 115
H03F2200/417 » A switch coupled in the output circuit of an amplifier being controlled by a circuit 127
H03F2200/42 » the input to the amplifier being made by capacitive coupling means 59
H03F2200/421 » Multiple switches coupled in the output circuit of an amplifier are controlled by a circuit 114
H03F2200/423 » Amplifier output adaptation especially for transmission line coupling purposes, e.g. impedance adaptation 313
H03F2200/426 » the amplifier comprising circuitry for protection against overload 151
H03F2200/429 » Two or more amplifiers or one amplifier with filters for different frequency bands are coupled in parallel at the input or output 171
H03F2200/432 » Two or more amplifiers of different type are coupled in parallel at the input or output, e.g. a class D and a linear amplifier, a class B and a class A amplifier 172
H03F2200/435 » A peak detection being used in a signal measuring circuit in a controlling circuit of an amplifier 115
H03F2200/438 » Separate feedback of amplitude and phase signals being present 22
H03F2200/441 » Protection of an amplifier being implemented by clamping means 74
H03F2200/444 » Diode used as protection means in an amplifier, e.g. as a limiter or as a switch 127
H03F2200/447 » the amplifier being protected to temperature influence 535
H03F2200/45 » the load of the amplifier being a capacitive element, e.g. CRT 18
H03F2200/451 » the amplifier being a radio frequency amplifier 6,2K
H03F2200/453 » Controlling being realised by adding a replica circuit or by using one among multiple identical circuits as a replica circuit 270
H03F2200/456 » A scaled replica of a transistor being present in an amplifier 189
H03F2200/459 » Ripple reduction circuitry being used in an amplifying circuit 65
H03F2200/462 » the current being sensed 369
H03F2200/465 » Power sensing 178
H03F2200/468 » the temperature being sensed 170
H03F2200/471 » the voltage being sensed 252
H03F2200/474 » A current mirror being used as sensor 46
H03F2200/477 » Paralleled transistors are used as sensors 6
H03F2200/48 » the output of the amplifier being coupled out by a capacitor 81
H03F2200/481 » A resistor being used as sensor 62
H03F2200/483 » A shunting switch being paralleled to the sensor 1
H03F2200/486 » the current in the load of an amplifying stage being sensed by a torus 0
H03F2200/489 » A coil being added in the source circuit of a common source stage, e.g. as degeneration means 74
H03F2200/492 » A coil being added in the source circuit of a transistor amplifier stage as degenerating element 128
H03F2200/495 » A parallel resonance circuit being added in the source circuit of a FET amplifier 8
H03F2200/498 » A resistor being added in the source circuit of a transistor amplifier stage as degenerating element 30
H03F2200/501 » A series resonance circuit being added in the source circuit of a FET amplifier 3
H03F2200/504 » the supply voltage or current being continuously controlled by a controlling signal, e.g. the controlling signal of a transistor implemented as variable resistor in a supply path for, an IC-block showed amplifier 403
H03F2200/507 » A switch being used for switching on or off a supply or supplying circuit in an IC-block amplifier circuit 123
H03F2200/51 » Capacitor in positive feedback circuit of an amplifier circuit to bootstrap a resistor 9
H03F2200/511 » Many discrete supply voltages or currents or voltage levels can be chosen by a control signal in an IC-block amplifier circuit 159
H03F2200/513 » the amplifier being made for low supply voltages 164
H03F2200/516 » Some amplifier stages of an amplifier use supply voltages of different value 117
H03F2200/519 » the bias or supply voltage or current of the drain side of a FET amplifier being controlled to be on or off by a switch 9
H03F2200/522 » the bias or supply voltage or current of the gate side of a FET amplifier being controlled to be on or off by a switch 20
H03F2200/525 » the bias or supply voltage or current of the source side of a FET amplifier being controlled to be on or off by a switch 10
H03F2200/528 » the temperature dependence being controlled by referencing to the band gap 15
H03F2200/531 » the temperature difference between different chips being controlled 1
H03F2200/534 » Transformer coupled at the input of an amplifier 259
H03F2200/537 » A transformer being used as coupling element between two amplifying stages 303
H03F2200/54 » Two or more capacitor coupled amplifier stages in cascade 53
H03F2200/541 » Transformer coupled at the output of an amplifier 528
H03F2200/543 » A transmission line being used as coupling element between two amplifying stages 99
H03F2200/546 » A tunable capacitance being present in an amplifier circuit 54
H03F2200/549 » the amplifier comprising means to emulate the vacuum tube behaviour 10
H03F2200/552 » the amplifier being made for video applications 20
H03F2200/555 » A voltage generating circuit being realised for biasing different circuit elements 351
H03F2200/57 » Separate feedback of real and complex signals being present 52
H03F2200/61 » the cascode amplifier has more than one common gate stage 68
H03F2200/63 » the amplifier being suitable for CATV applications 36
H03F2200/66 » Clipping circuitry being present in an amplifier, i.e. the shape of the signal being modified 70
H03F2200/69 » the amplifier stage being a common drain coupled MOSFET, i.e. source follower 36
H03F2200/72 » the amplifier stage being a common gate configuration MOSFET 83
H03F2200/75 » the amplifier stage being a common source configuration MOSFET 162
H03F2200/78 » A comparator being used in a controlling circuit of an amplifier 533
H03F2200/81 » Inputs or outputs are crossed during a first switching time, not crossed during a second switching time 7
H03F2200/84 » A cross coupling circuit being realized by current mirrors 13
H03F2200/87 » the cross coupling circuit being realised only by MOSFETs 19
H03F2200/91 » the amplifier has a current mode topology 83
H03F2200/93 » Two or more transistors are coupled in a Darlington composite transistor configuration, all transistors being of the same type 23
H03F2200/96 » Two or more complementary transistors are coupled in a Darlington composite transistor configuration 5
H03F2200/99 » A diode as rectifier being used as a detecting circuit in an amplifying circuit 70

Recent Application in this class:

20150316607

2015-11-05

System and method for converging current with target current in device under test