Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9031144 | Peak factor reduction device and wireless transmitter | Yuuji Ishida, Qian He | 2015-05-12 |
| 8315338 | Orthogonality detector, and quadrature demodulator and sampling quadrature demodulator using detector thereof | Shigenori Hayase | 2012-11-20 |
| 8280442 | Radio base station and receiver fault diagnosis method | Haruo Nakano, Masanori Taira, Takahiro Chiba, Yasuyuki Magara | 2012-10-02 |
| 8175198 | Matched filter and receiver | — | 2012-05-08 |
| 8140106 | Peak factor reduction device and base station | Takahiro Chiba, Masanori Taira | 2012-03-20 |
| 7995674 | Digital predistortion transmitter | Shouhei Murakami, Yuji Ishida, Tomoya Uchiike, Yoshiaki Hasegawa | 2011-08-09 |
| 7941476 | Method of designing passive RC complex filter of Hartley radio receiver | — | 2011-05-10 |
| 7933569 | Timing adjustment method for wireless communication apparatus | May Suzuki, Takashi Yano | 2011-04-26 |
| 7920652 | Orthogonality detector, and quadrature demodulator and sampling quadrature demodulator using detector thereof | Shigenori Hayase | 2011-04-05 |
| 7864881 | Digital predistortion transmitter | Shouhei Murakami, Yuji Ishida, Tomoya Uchiike, Yoshiaki Hasegawa | 2011-01-04 |
| 7817746 | Peak factor reduction unit and baseband signal processing device | Hideaki Arai, Shouhei Murakami | 2010-10-19 |
| 7809078 | OFDM modulator | Yuji Ishida, Shouhei Murakami, Kenji Yanagi | 2010-10-05 |
| 7800452 | Phase locked loop circuit | Manabu Kawabe, Satoshi Tanaka, Yukinori Akamine, Masumi Kasahara, Kazuo Watanabe | 2010-09-21 |
| 7555058 | Delay locked loop circuit, digital predistortion type transmitter using same, and wireless base station | May Suzuki | 2009-06-30 |
| 7426377 | Sigma delta (ΣΔ) transmitter circuits and transceiver using the same | Satoshi Tanaka, Manabu Kawabe, Yukinori Akamine, Masumi Kasahara, Kazuo Watanabe | 2008-09-16 |
| 7383028 | Timing adjustment method for wireless communication apparatus | May Suzuki, Takashi Yano | 2008-06-03 |
| 7352316 | Time-interleaved AD converter | Yuji Ishida, Toshiaki Kurokawa, Keiichi Hirota, Shouhei Murakami | 2008-04-01 |
| 7301405 | Phase locked loop circuit | Manabu Kawabe, Satoshi Tanaka, Yukinori Akamine, Masumi Kasahara, Kazuo Watanabe | 2007-11-27 |
| 7161990 | Predistortion amplifier | Toshiaki Kurokawa, Shouhei Murakami, Masamitsu Nishikido, Norie Hara | 2007-01-09 |
| 6999733 | Peak factor reduction device | Takashi Yano | 2006-02-14 |
| 6046637 | Feedforward amplifier | Hiroshi Kishida, Ken Takei, Hiroshi Okabe, Kenji Sekine | 2000-04-04 |
| 5914693 | Coaxial resonant slot antenna, a method of manufacturing thereof, and a radio terminal | Ken Takei, Mikio Kuwahara, Hiroshi Okabe, Hiroshi Kishida, Yoshitaka Imakado +1 more | 1999-06-22 |
| 5574455 | Digital to analog converter and frequency synthesizer using the converter | Masaru Kokubo | 1996-11-12 |