Inventor

NARAHASHI SHOICHI

JP73 patents

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

NARAHASHI SHOICHI

NTT DOCOMO INC

Quadrature hybrid circuit having variable reactances at the four ports thereof

Matching circuit and multi-band amplifier

Multi-band lookup table type predistorter

Multiband Doherty amplifier

Power series type predistorter for multi-frequency bands operation

Feed forward amplifier for multiple frequency bands

Multi-band look-up table type predistorter

Resonator

High sensitivity radio receiver

Multi-band predistorter using power series representation

High-sensitivity wireless receiving device and high-frequency unit used therefor

Power series predistorter and control method thereof

Cryogenic receiving amplifier and amplifying method

Tunable filter

Stabilization circuit and multiband amplification circuit

Filter with improved capacitive coupling portion

Coplanar waveguide filter and method of forming same

Front-end circuit and impedance adjustment method

Variable resonator

Matching circuit

Bias circuit

Variable resonator and variable phase shifter

Multi-band feed-forward amplifier and adjustment method therefor

Multiband matching circuit and multiband power amplifier

Coupling structure, resonator excitation structure and filter for coplanar-waveguide circuit

Variable resonator, tunable bandwidth filter, and electric circuit device

Feedforward amplifier and control method thereof

Matching circuit and dual-band power amplifier

Matching circuit

Bias circuit

Coplanar waveguide resonator and coplanar waveguide filter using the same

KAWAI KUNIHIRO

Variable resonator, tunable filter, and electric circuit device

Variable resonator, variable bandwidth filter, and electric circuit device

Multimode frontend circuit

Multirole circuit element capable of operating as variable resonator or transmission line and variable filter incorporating the same

Variable resonator, tunable filter, and electric circuit device

Variable resonator, tunable bandwidth filter, and electric circuit device

Signal selecting device

NIPPON TELEGRAPH & TELEPHONE

Feed-forward amplifier

Feedforward amplifier

High sensitivity radio receiver

Amplifying device having input and output nonlinear phase shifters of opposite phase-frequency characteristics

Signal multiplexer and multiplexing method

FUKUDA ATSUSHI

Leakage power reduction apparatus

Multiband matching circuit and multiband power amplifier

Multiband matching circuit

Radio communication device and power supplying method for radio communication device

SUZUKI YASUNORI

Multi-band lookup table type predistorter

OHKAWARA JUNYA

Power series digital predistorter and control method therefor

JAPAN RADIO CO LTD

Receiver capable of reliably detecting a failure