Issued Patents All Time
Showing 26–50 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7383027 | Transmission circuit | Toru Matsuura | 2008-06-03 |
| 7378918 | Two-point modulation type phase modulation apparatus, polar modulation transmission apparatus, wireless transmission apparatus and wireless communication apparatus | Shunsuke Hirano | 2008-05-27 |
| 7321271 | Voltage-controlled oscillator, radio communication apparatus and voltage-controlled oscillation method for reducing degradation of phase noise characteristic | Koji Takinami, Tokio Endoh | 2008-01-22 |
| 7310506 | Differential voltage control oscillator including radio-frequency switching circuits | Takayuki Tsukizawa, Koji Takinami, Yukio Hiraoka | 2007-12-18 |
| 7280610 | Data converter, signal generator, transmitter and communication apparatus using the data converter or the signal generator, and data conversion method | Toru Matsuura | 2007-10-09 |
| 7251462 | Modulation circuit device, modulation method and radio communication device | Toru Matsuura, Masaharu Udagawa | 2007-07-31 |
| 7245883 | Radio communication apparatus, radio communication method, antenna apparatus and first duplexer | Toshifumi Nakatani, Atsushi Yamamoto | 2007-07-17 |
| 7245890 | High frequency variable gain amplification device, control device, high frequency variable gain frequency-conversion device, and communication device | Masahiro Kumagawa, Toshifumi Nakatani | 2007-07-17 |
| 7230996 | Transmitting circuit device and wireless communications device | Toru Matsuura | 2007-06-12 |
| 7224238 | Frequency modulator, frequency modulating method, and wireless circuit | Makoto Sakakura | 2007-05-29 |
| 7215215 | Phase modulation apparatus, polar modulation transmission apparatus, wireless transmission apparatus and wireless communication apparatus | Shunsuke Hirano | 2007-05-08 |
| 7199652 | Amplifier; and transmitter and communication device incorporating the same | Shigeru Morimoto | 2007-04-03 |
| 7199677 | Frequency modulation apparatus | Hiroyuki Yoshikawa, Shunsuke Hirano | 2007-04-03 |
| 7170358 | Voltage controlled oscillator, and PLL circuit and wireless communication apparatus using the same | Takayuki Tsukizawa, Koji Takinami, Atsushi Ohara | 2007-01-30 |
| 7142614 | Signal generating circuit for generating a reference phase signal and a quadrature signal | Koji Takinami, Makoto Sakakura | 2006-11-28 |
| 7110486 | Frequency synthesizer apparatus equipped with fraction part control circuit, communication apparatus, frequency modulator apparatus, and frequency modulating method | Toshifumi Nakatani, Hiroaki Kosugi, Masakatsu Maeda, Shunsuke Hirano | 2006-09-19 |
| 7109793 | High frequency differential circuit, differential amplifier, differential mixer, differential oscillator, and radio circuit using same | Toshifumi Nakatani | 2006-09-19 |
| 7079829 | Semiconductor differential circuit, oscillation apparatus, switching apparatus, amplifying apparatus, mixer apparatus and circuit apparatus using same, and semiconductor differential circuit placement method | Toshifumi Nakatani, Yukio Hiraoka | 2006-07-18 |
| 7075383 | Frequency modulator, frequency modulating method, and wireless circuit | Makoto Sakakura | 2006-07-11 |
| 7050525 | Frequency synthesizer apparatus equipped with fraction part control circuit, communication apparatus, frequency modulator apparatus, and frequency modulating method | Toshifumi Nakatani, Hiroaki Kosugi, Masakatsu Maeda, Shunsuke Hirano | 2006-05-23 |
| 7038557 | Antenna duplexer and mobile communication device using the same | Hiroyuki Nakamura, Toshio Ishizaki, Makoto Sakakura, Hiroaki Kosugi, Hiroyuki Itokawa +1 more | 2006-05-02 |
| 7013090 | Transmitting circuit apparatus and method | Masanori Iida, Hiroyuki Asakura | 2006-03-14 |
| 6990155 | Wireless quadrature modulator transmitter using E/O and O/E connectives | Masanori Iida, Hiroyuki Asakura | 2006-01-24 |
| 6980057 | Power amplifier, power distributor, and power combiner | Shigeru Morimoto | 2005-12-27 |
| 6980831 | Radio communication base state system including optical advanced base station | Toshimitsu Matsuyoshi, Kaoru Ishida | 2005-12-27 |