Tamagawa Electronics Co., Ltd. designs and manufactures attenuators, terminators, filters, RF switches, power dividers/combiners, directional and hybrid couplers, amplifiers, oscillators, and frequency synthesizers. It offers fixed, rotary, button, and variable attenuators; distributor couplers, including variable phase shifters and couplers; coaxial switches and coaxial PIN diode switches; accessories, including impedance transformers, detectors and biastees, and microwave fuses; and optical devices, noise generators, and measuring boxes. The company’s products are used in wireless communication and broadcasting applications. It markets its products through a network of dealers and sales representatives. The company was founded in 1968 and is based in Ayase, Japan. Tamagawa Electronics Co., Ltd. operates as a subsidiary of Tamagawa Holdings Co. Ltd.