Inventor

KIMURA KATSUJI

JP125 patents

⚠️ This page may combine multiple inventors who share the name “KIMURA KATSUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KIMURA KATSUJI

NEC CORP

Portable radio communication apparatus comprising an antenna member for a broad-band signal

Current reference circuit using PTAT and inverse PTAT subcircuits

Constant voltage circuit formed of FETs and reference voltage generating circuit to be used therefor

Temperature sensor circuit and constant-current circuit

Reference current circuit and reference voltage circuit

Operational transconductance amplifier and multiplier

Current reference circuit having both a PTAT subcircuit and an inverse PTAT subcircuit

Current reference circuit with substantially no temperature dependence

Quarter-square multiplier based on the dynamic bias current technique

Differential circuit and multiplier

MOS four-quadrant multiplier including the voltage-controlled-three-transistor V-I converters

Low-voltage bipolar OTA having a linearity in transconductance over a wide input voltage range

MOS operational transconductance amplifier using an adaptively-biased differential pair

Differentially coupled AND/NAND and XOR/XNOR circuitry

Squaring circuit capable of widening a range of an input voltage

Analog multiplier using an octotail cell or a quadritail cell

Tunable operational transconductance amplifier and two-quadrant multiplier employing MOS transistors

Local oscillator frequency multiplier and mixing circuit comprising a squaring circuit

Operational transconductance amplifier and Bi-MOS multiplier

Logarithmic amplifier circuit using triple-tail cells

Constant-current circuit operating in saturation region

Logarithmic amplifying circuit based on the bias-offset technique

Differential amplifier circuit with almost linear transconductance

MOS transconductance amplifier having squaring circuit for LSI implementation

Differential amplifier circuit having a driver with square-law characteristic

Reference voltage generating circuit formed of bipolar transistors

Multiplier and squaring circuit to be used for the same

Reference voltage generating circuit with temperature stability for use in CMOS integrated circuits

Direct-coupled FET frequency multiplier and mixer circuit

Differential amplifier circuit using quadritail circuit

Analog multiplier

Logarithmic amplifier circuit

Battery-powered radio communication apparatus capable of prolonging the communicable state thereof

Intermediate frequency amplifier with signal strength detection circuit

Tunable CMOS Operational Transconductance Amplifier

Bipolar translinear four-quadrant analog multiplier

Analog multiplier and multiplier core circuit used therefor

Reference current circuit capable of preventing occurrence of a difference collector current which is caused by early voltage effect

Analog multiplier operable on a low supply voltage

Intermediate frequency amplification circuit capable of detecting a field strength with low electric power

Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor

NEC ELECTRONICS CORP

CMOS reference voltage circuit

MOS differential amplifier circuit having a wide linear input voltage range

Reference voltage circuit

CMOS current mirror circuit and reference current/voltage circuit

Voltage reference circuit compensated for non-linearity in temperature characteristic of diode

Filter apparatus including slave gm-C filter with frequency characteristics automatically tuned by master circuit

CMOS reference voltage circuit

Variable gain amplifier circuit

SHARP KK

Flicker correction apparatus and flicker correction method, and recording medium storing flicker correction program