Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6590449 | Predistortion circuit, low-distortion power amplifier, and control methods therefor | Toru Matsuura, Makoto Sakakura, Seiji Fujiwara | 2003-07-08 |
| 6590906 | Multi-carrier transmitter circuit and communication equipment | Masayuki Miyaji, Hiroaki Kosugi, Shin'ichi Kugou | 2003-07-08 |
| 6563395 | Power splitter/combiner circuit, high power amplifier and balun circuit | Masayuki Miyaji, Hiroaki Kosugi, Shin'ichi Kugou | 2003-05-13 |
| 6545542 | Power amplifier with coupler for cross-coupling amplifiers for reduction of differential frequency component | Toshimitsu Matsuyoshi, Masayuki Miyaji, Seiji Fujiwara | 2003-04-08 |
| 6542021 | High frequency switch and communication apparatus with a high frequency voltage divider | Hiroshi Isono | 2003-04-01 |
| 6507253 | Delay circuit and feedforward amplifier | Toshimitsu Matsuyoshi, Toru Matsuura, Seiji Fujiwara | 2003-01-14 |