Inventor

NAGAYAMA AKIRA

JP23 patents

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

NAGAYAMA AKIRA

NAGAYAMA AKIRA

Optical transmitter

Power amplifying circuit, and transmitter and wireless communication device using the same

Power amplification device and communication device

Adder, and power combiner, quadrature modulator, quadrature demodulator, power amplifier, transmitter and wireless communicator using same

Power amplifier circuit, and transmitter and wireless communication device using the same

Power amplification device, and transmission device and communication device both using thereof

NIPPON TELEGRAPH & TELEPHONE

Optical fiber connector unit and optical fiber connector

Automatic assembly and inspection system for optical connector

Polishing plate for optical fiber connector ferrule end face and polishing apparatus therefor

Automated optical main distributing frame system

Servo system with reduction of transient error and settling time

TOKYO ELECTRON LTD

Cleaning method and protecting member

Stage and substrate processing apparatus

Mounting table and plasma processing apparatus

Substrate support and substrate processing apparatus

Plasma processing apparatus and method for manufacturing mounting stage

FUJITSU LTD

Circuit and method for driving laser diode

Method for measuring transmission loss in optical transmission line for test, and slave station, master station, and optical communication system using the method

Method and apparatus for controlling bias point of optical transmitter

Power supply control circuit and control method thereof

KYOCERA CORP

Power amplification device and communication device

Power amplification device, and transmission device and communication device using same

Addition circuit, power amplifier circuit using same, and transmission device and communication device using the power amplifier circuit