Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › 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)
11/1998
11/04/1998EP0876088A2 Semiconductor microwave amplifier
11/04/1998EP0875765A1 Voltage isolation circuit for a measurement channel
11/04/1998CN1198019A Field effect transistor and power amplifier including the same
11/03/1998US5832373 Output power control device
11/03/1998US5831784 Pseudo differential voltage sense MR preamplifier with improved bandwidth
11/03/1998US5831491 High power broadband termination for k-band amplifier combiners
11/03/1998US5831480 Operational amplifier adopted for input and output in wide ranges for driving a large load
11/03/1998US5831479 Power delivery system and method of controlling the power delivery system for use in a radio frequency system
11/03/1998US5831477 Power amplifier system with variable output
11/03/1998US5831476 Voltage-tuned millimeter-wave amplifier and method for tuning
11/03/1998US5831470 High-efficiency charge pumping circuit
11/03/1998US5831327 Differential circuit with a dynamic bias current for producing an exponential or a square-law transfer characteristic
11/03/1998CA2136749C Power amplifier bias control circuit and method
10/1998
10/29/1998WO1998028886A3 Line terminal circuit for controlling the common mode voltage level on a transmission line
10/28/1998EP0874451A2 Variable gain amplifier
10/28/1998EP0874450A1 Power amplifiers device with small power degradation during failures
10/28/1998EP0873599A1 Bypass device in an amplifier unit
10/28/1998EP0787382B1 A second generation low noise microwave voltage controlled oscillator
10/28/1998EP0749645B1 An amplifier circuit
10/27/1998US5828269 High-frequency amplifier with high input impedance and high power efficiency
10/27/1998US5828267 Amplifier
10/27/1998US5828265 Degenerated differential pair with controllable transconductance
10/27/1998US5828241 Signal transmission circuit providing amplified output from positive feedback of intermediate amplifier circuit
10/27/1998CA2096169C Negative feedback sense pre-amplifier
10/22/1998WO1998047222A1 An amplifier circuit having a high linearity mode of operation and a high efficiency mode of operation
10/22/1998WO1998047221A1 Low voltage analog front end
10/22/1998WO1998047220A1 Current feedback differential amplifier clamp
10/21/1998EP0872952A2 CMOS rail-to-rail input/output amplifier
10/21/1998CN2295298Y Electric-tuned stereo-phonic tuner for automobile
10/20/1998US5825819 Asymmetrical digital subscriber line (ADSL) line driver circuit
10/20/1998US5825251 Audio signal amplifying circuit
10/20/1998US5825249 Multistage source follower amplifier having a wide bandwidth and low power consumption
10/20/1998US5825248 Low power consuming balanced transformer less amplifier device
10/20/1998US5825246 Low voltage class AB amplifier
10/20/1998US5825245 Compound cascode amplifier
10/20/1998US5825244 Low power class AB integrated circuit amplifier having improved linearity when driving high impedance loads
10/20/1998US5825230 Amplifier-less low power switched-capacitor techniques
10/20/1998US5825229 Electronically tunable voltage level shifter and amplifier therefor
10/20/1998US5825228 Low quiescent power, high output power rail-to rail amplifier output stages and methods for using same
10/20/1998US5825167 Linear transconductors
10/20/1998US5824895 Air flow meter of a heating resistor type
10/15/1998WO1998045940A1 Automatic volume control in an audio-signal reproduction facility, and device required
10/15/1998WO1998045939A2 A bridged driving amplifier and a telecommunication device
10/15/1998DE19715282A1 Circuit arrangement especially for hands-free system
10/14/1998EP0871291A1 Precision amplifier for pulse signals
10/14/1998EP0870361A1 Efficient parallel-stage power amplifier
10/14/1998EP0870360A1 Differential amplifier with improved low-voltage linearity
10/13/1998US5821824 Multistage voltage converter for voltage controlled oscillator
10/13/1998US5821814 Negative feedback amplifier
10/13/1998US5821813 Bidirectional amplifier
10/13/1998US5821812 Wideband amplifier using parallel feedback transistor
10/13/1998US5821811 Bypass device in an amplifier unit
10/13/1998US5821809 CMOS high-speed differential to single-ended converter circuit
10/13/1998US5821792 Current differential amplifier circuit
10/08/1998WO1998044627A1 Power amplication system with intelligent control of amplifier modules
10/08/1998WO1998044626A2 Pulse referenced control method for enhanced power amplification of a pulse modulated signal
10/08/1998DE19814675A1 Output circuit for power IC with high breakdown voltage
10/08/1998DE19731691C1 Switched power amplifier for NMR imager
10/08/1998DE19713862A1 Verfahren zur automatischen Lautstärkesteuerung in einer Audiosignal-Wiedergabevorrichtung und Anordnung dazu Method for automatic volume control in an audio signal reproducing apparatus and arrangement to
10/08/1998DE19712263A1 Two-stage operational amplifier apparatus with dynamic output impedance
10/08/1998CA2285347A1 Power amplification system with intelligent control of amplifier modules
10/07/1998EP0869607A1 Amplifier with common base input stage
10/07/1998EP0611487B1 High isolation switch
10/06/1998US5818300 Variable gain amplifier circuit with reduced power requirements
10/06/1998US5818298 Linear amplifying apparatus using coupled non-linear amplifiers
10/06/1998US5818295 Operational amplifier with stabilized DC operations
10/06/1998US5818279 Circuit arrangement comprising a logarithmic transfer function
10/06/1998US5818212 Reference voltage generating circuit of a semiconductor memory device
10/01/1998WO1998043348A2 Radio receiver and controllable amplifier circuit
10/01/1998DE19735749C1 Power amplifier esp. gradient amplifier of nuclear resonance tomograph
10/01/1998DE19713571C1 Controlled resistance for semi conductor differencing amplifier
09/1998
09/30/1998EP0868035A2 Analog signal transmission circuit
09/30/1998EP0868023A1 Comparator for wide supply voltage range
09/30/1998EP0868022A2 Offset correction circuit
09/30/1998CN1194555A Receiving loop of honey-comb type telephone
09/29/1998US5815581 Class D hearing aid amplifier with feedback
09/29/1998US5815113 Monolithic, low-noise, synchronous direct detection receiver for passive microwave/millimeter-wave radiometric imaging systems
09/29/1998US5815052 High-frequency composite components comprising first and second circuits connected in parallel for multi-frequency systems
09/29/1998US5815040 Wide bandwidth, current sharing, MOSFET audio power amplifier with multiple feedback loops
09/29/1998US5815037 High-pass filter, particularly for canceling out the offset in a chain of amplifiers
09/29/1998US5815034 Capacitive coupling circuit with diode-biased differential amplifier
09/29/1998US5815012 Voltage to current converter for high frequency applications
09/29/1998US5814953 Power amplifier predriver stage
09/29/1998US5814924 Field emission display device having TFT switched field emission devices
09/29/1998CA2088194C Analog output electro-pneumatic transducer
09/24/1998WO1998042170A1 Circular stripline package incorporating a low noise amplifier
09/24/1998WO1998042080A1 Power interface circuit for a tdma transmitter
09/24/1998WO1998042072A1 Rail-to-rail operational amplifier
09/24/1998DE19804747A1 Band separation reference circuit
09/24/1998DE19738177A1 Monolithic integrated microwave circuit for portable telephone
09/23/1998EP0866561A1 Analogue/digital converter with a calibration arrangement
09/23/1998EP0866549A1 Reduction of excessive spectral power distribution from class-C saturated amplification of a pulsed-carrier
09/23/1998EP0866548A1 Differential integrating amplifier with switched capacitor circuit for precision input resistors
09/23/1998EP0771492B1 Servo-amplifier for controlling a high-ohmic low-voltage source
09/23/1998CN1194065A Opposed current power converter
09/23/1998CN1193845A Integrated circuit device having bias circuit for enhancement transistor circuit
09/23/1998CN1193844A High frequency variable gain amplifier device and wireless communications terminal
09/23/1998CN1193790A Photo detector circuit
09/22/1998US5812079 Subranging type A/D converter apparatus equipped with feedback line for transmitting control signal for A/D conversion
09/22/1998US5812033 Microwave integrated circuit
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