How was the HEMT R&D Carried Out?

Takashi MIMURA  

C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition)   Vol.J100-C   No.10   pp.444-447
Publication Date: 2017/10/01
Online ISSN: 1881-0217
Type of Manuscript: INVITED PAPER (Special Section on IEICE 100th-Anniversary Historical Review on Electronics for Communication)
HEMT,  high electron mobility transistor,  BS antenna,  radio telescope,  

Full Text(in Japanese): FreePDF(469.8KB)

The first HEMT was demonstrated in 1980. Its device architecture was unique and unprecedented, requiring sophisticated material-growth and device-process techniques, and therefore considerable difficulties were forecast for its commercialization. Five years later, however, the first commercial HEMT was introduced as a low-noise amplifier for radio telescopes. In 1987, HEMTs came into wide use in broadcast satellite receivers, and mass production for this application reached about 100 million units per year. This article focuses on the HEMT R&D that the author feels might be of interest to younger people.