H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements

Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
12/1997
12/04/1997	WO1997045950A1 Hybrid matrix amplifier with noise reduction
12/04/1997	DE19700109A1 On silicon-on-insulator (SOI) substrate formed semiconductor component
12/04/1997	CA2255795A1 Hybrid matrix amplifier with noise reduction
12/03/1997	EP0810723A1 BICMOS transconductor differential stage for high-frequency filters
12/03/1997	EP0639307B1 Modulation amplifier for radio transmitters
12/02/1997	US5694439 Bi-directional low pass filtering method and apparatus
12/02/1997	US5694085 For amplifying an input signal
12/02/1997	US5694084 Wide-band amplifier circuits
12/02/1997	US5694083 Single end input high frequency amplifier
12/02/1997	US5694081 Signal conditioning apparatus
12/02/1997	US5694076 Voltage generation circuit with output fluctuation suppression
12/02/1997	US5694069 Variable resistor and gain control circuit and integrated circuit having the variable resistor
12/02/1997	US5694059 Buffer of fine connection structure for connecting an atom level circuit and a general semiconductor circuit
11/1997
11/27/1997	WO1997044895A2 Amplifier with active-bootstrapped gain-enhancement technique
11/27/1997	WO1997037428A3 Rail-to-rail input stages with constant gm and constant common-mode output currents
11/26/1997	EP0809370A1 Digital signal receiver circuit
11/26/1997	EP0809369A1 Optical receiving circuit
11/26/1997	EP0809355A2 Amplifier circuit
11/26/1997	EP0809354A1 Differential amplifier
11/26/1997	EP0809353A2 Amplifier for cancelling noise between circuit systems
11/26/1997	EP0809352A1 Inverted amplifying circuit
11/26/1997	EP0809351A2 Differential amplifier circuit
11/26/1997	CN1166246A Power amplifier and communication device
11/26/1997	CN1166245A Circuit arrangement provided with a voltage-current converter
11/26/1997	CN1166078A Output voltage compensating circuit
11/26/1997	CN1036560C Appts. and method for frequency compensating an operational amplifier
11/25/1997	US5691670 Integrated microwave-silicon component
11/25/1997	US5691667 RF radiation absorbing material disposed between the cathode and anode of an electron beam tube
11/25/1997	US5691658 Current mode amplifier, rectifier and multi-function circuit
11/25/1997	US5691657 Sample-and-hold circuit including a robust leakage current compensating circuit
11/20/1997	WO1997043826A2 Gain control
11/20/1997	WO1997043825A1 Fully differential voltage controlled operational transconductance amplifier
11/20/1997	DE19619312A1 Amplification system for hearing aid input signals
11/19/1997	EP0807330A2 Current one-shot circuit
11/19/1997	CN1165597A Driving stage
11/19/1997	CN1165466A Amplifier and portable telephone using the same
11/19/1997	CN1165429A Multistage variable gain amplifier circuit
11/19/1997	CN1165428A Low voltage operational amplifier and method
11/19/1997	CN1165427A Operational amplification circuit
11/18/1997	US5689460 Semiconductor memory device with a voltage down converter stably generating an internal down-converted voltage
11/18/1997	US5689212 Large-scale integration monolithic microwave amplifier with tree-like distributed topology
11/18/1997	US5689211 Integrated circuit
11/18/1997	US5689210 Active distributed signal sampler
11/18/1997	US5689199 Comparator with hysteresis in bipolar technology
11/13/1997	WO1997042704A2 Degenerated differential pair with controllable transconductance
11/13/1997	DE19629555C1 Lock-in amplifier with selectable phase selectivity for very small and distorted signals
11/13/1997	DE19619208A1 Sigma-delta class D amplifier for CD player
11/12/1997	EP0806080A1 Amplifier
11/12/1997	EP0806057A1 Mos transistor
11/12/1997	EP0660980A4 High power solid state r.f. amplifier.
11/06/1997	WO1997041642A1 Transmitter combiner arrangement
11/06/1997	WO1997041637A1 Method for the amplification of amplitude-modulated phase-keyed signals and device for realising the same
11/06/1997	WO1997041636A1 Monolithic high voltage driver circuit
11/06/1997	WO1997041558A1 Pwm/linear driver for disk drive voice coil actuator
11/06/1997	DE19717561A1 Capacitive coupled circuit with diode biassed differential amplifier
11/05/1997	EP0805551A1 Semiconductor circuit
11/05/1997	EP0805550A1 DC coupled broadband amplifier with low offset
11/05/1997	EP0805437A2 Reproducing circuit for a magnetic head
11/05/1997	EP0805436A2 Reproducing circuit for a magnetic head
11/05/1997	EP0804789A1 Arrangement comprising a magnetic write head, and write amplifier with capacitive feed-forward compensation
11/05/1997	EP0493519B1 Output amplifier
11/05/1997	EP0449823B1 Improved variolosser
11/04/1997	US5684433 Dual-feedback amplifier circuit arrangements
11/04/1997	US5684432 Amplifier output stage having enhanced drive capability
11/04/1997	US5684430 Power amplifier adapted to simplify adjustment work for preventing occurrence of parasitic oscillation
11/04/1997	US5684419 n-bit analog-to-digital converter with n-1 magnitude amplifiers and n comparators
11/04/1997	US5684393 Linear transconductors
10/1997
10/30/1997	WO1997033366A3 Circuit arrangement comprising a logarithmic transfer function
10/30/1997	DE19616443A1 Push=pull end stage device for analogue and digital circuit e.g. AND=gate
10/29/1997	EP0803986A1 Liquid cooling system for high power solid state am transmitter
10/29/1997	EP0803976A2 Amplifier
10/29/1997	EP0803975A1 Power stage, particularly for an operational amplifier
10/28/1997	US5682121 No turn-on pop noise amplifier
10/28/1997	US5682120 Differential amplifier circuit using lateral-type bipolar transistors with back gates
10/28/1997	US5682119 Variable gain circuit
10/28/1997	US5682111 Integrated circuit with power monitor
10/28/1997	US5682094 Current mirror arrangement
10/23/1997	WO1997039525A1 Silicon carbide rf power module
10/23/1997	DE19615862A1 Loud-speaker system drive circuit
10/23/1997	DE19615285A1 Controlled push=pull audio amplifier
10/23/1997	DE19614996A1 Polarity independent differential amplifier
10/22/1997	EP0802626A1 Wide band distributed amplifier with temperature compensation
10/22/1997	EP0801726A1 Circuit for setting the operating point of an opto-electronic component
10/22/1997	EP0632938B1 Multiple resonator oscillator circuits
10/22/1997	CN1162865A Field effect transistor amplifier
10/22/1997	CN1162864A Efficient RF CMOS amplifier with increased transconductance
10/21/1997	US5680173 Kinescope driver apparatus
10/21/1997	US5680074 Tube amplifier having specific configuration with four tubes
10/21/1997	US5680038 High-swing cascode current mirror
10/16/1997	DE19635024C1 Circuit for driving capacitive load
10/15/1997	EP0801467A1 Low impedance distributed amplifier adapter for opto-electronic microwave signal transmitter with very wide band
10/15/1997	EP0801466A1 High impedance amplifier adapter for wide band microwave signals of a capacitive high impedance current source such as a photo diode
10/15/1997	EP0631699A4 Coupling circuit.
10/15/1997	EP0585421A4 High dynamic range modulation independent feed forward amplifier network
10/14/1997	US5677962 Hybrid analog and digital amplifier with a delayed step change in the digital gain
10/14/1997	US5677647 High power pulse waveform generator
10/14/1997	US5677646 Integrated circuit differential amplifier
10/14/1997	US5677621 Noise-insensitive device for bias current generation
10/14/1997	CA2144420C Circuit arrangement for an integrated output amplifier
10/09/1997	WO1997037433A1 Conversion of a pcm signal into a upwm signal

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