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Yoji ISOTA

Efficiency Enhancement of a Digital Predistortion Doherty Amplifier Transmitter Using a Virtual Open Stub Technique Kenichi HORIGUCHI Satoru ISHIZAKA Masatoshi NAKAYAMA Ryoji HAYASHI Yoji ISOTA Tadashi TAKAGI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2007/09/01 Vol. E90-C No. 9 pp. 1670-1677 Type of Manuscript: Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology) Category: Active Devices/Circuits Keyword: power amplifier, microwave Doherty amplifier, efficiency, orthogonal frequency division multiplexing (OFDM), predistortion,
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Highly Accurate Measurement of LN Optical Intensity Modulators by Small RF Inputs Tsutomu NAGATSUKA Yoshihito HIRANO Yoji ISOTA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2007/02/01 Vol. E90-C No. 2 pp. 474-478 Type of Manuscript: Special Section PAPER (Special Section on Evolution of Microwave and Millimeter-Wave Photonics Technology) Category: Keyword: LN optical intensity modulators, highly accurate measurement, halfwave voltage, chirp parameter, optical spectrum analyzer,
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A Balanced Even Harmonic Quadrature Mixer Using Anti Parallel Diode Pairs Mitsuhiro SHIMOZAWA Noriharu SUEMATSU Kenji ITOH Yoji ISOTA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2006/12/01 Vol. E89-C No. 12 pp. 1821-1828 Type of Manuscript: Special Section PAPER (Special Section on Emerging Microwave Techniques) Category: Active Circuits/Devices/Monolithic Microwave Integrated Circuits Keyword: microwave, mixer, harmonic mixer, direct conversion receiver,
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Novel Phase-Continuous Frequency Hopping Control for a Direct Frequency Synthesizer Using a Quadrature Mixer Driven by Two DDSs Kenichi TAJIMA Ryoji HAYASHI Kenji ITOH Yoji ISOTA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2006/12/01 Vol. E89-C No. 12 pp. 1829-1835 Type of Manuscript: Special Section PAPER (Special Section on Emerging Microwave Techniques) Category: Active Circuits/Devices/Monolithic Microwave Integrated Circuits Keyword: frequency synthesizer, direct digital synthesizer, quadrature mixer, phase accumulator, overflow, phase,
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An Even Harmonic Quadrature Mixer with a Simple Filter Configuration and an Integrated LTCC Module for W-CDMA Direct Conversion Receiver Mitsuhiro SHIMOZAWA Kenichi MAEDA Eiji TANIGUCHI Keiichi SADAHIRO Takayuki IKUSHIMA Tamotsu NISHINO Noriharu SUEMATSU Kenji ITOH Yoji ISOTA Tadashi TAKAGI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2006/04/01 Vol. E89-C No. 4 pp. 473-481 Type of Manuscript: Special Section PAPER (Special Section on Advanced RF Technologies for Compact Wireless Equipment and Mobile Phones) Category: Keyword: direct conversion receiver, LTCC, module, quadrature mixer, harmonic mixer,
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An Even Harmonic Mixer Using Self-Biased Anti-Parallel Diode Pair Mitsuhiro SHIMOZAWA Takatoshi KATSURA Kenichi MAEDA Eiji TANIGUCHI Takayuki IKUSHIMA Noriharu SUEMATSU Kenji ITOH Yoji ISOTA Tadashi TAKAGI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/08/01 Vol. E86-C No. 8 pp. 1464-1471 Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology) Category: Keyword: microwave, mixer, harmonic mixer, anti-parallel diode pair, self-bias,
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A Simple Design Method of the Planar Butler Matrix Using Thin Dielectric Substrate Metalized Both Side Yoji ISOTA Osami ISHIDA Fumio TAKEDA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/02/01 Vol. E86-C No. 2 pp. 162-168 Type of Manuscript: Special Section PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication) Category: Passive (Feeder) Keyword: Butler matrix, multi beam antenna, adaptive array antenna, beam forming network,
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Low Spurious Frequency Setting Algorithm for a Triple Tuned Type PLL Synthesizer Driven by a DDS Ken'ichi TAJIMA Yoshihiko IMAI Yousuke KANAGAWA Kenji ITOH Yoji ISOTA Osami ISHIDA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2002/03/01 Vol. E85-C No. 3 pp. 595-598 Type of Manuscript: Special Section LETTER (Special Issue on Signals, Systems and Electronics Technology) Category: Keyword: direct digital synthesizer, phase locked loop, spurious component, triple tune,
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Distortion Characteristics of an Even Harmonic Type Direct Conversion Receiver for CDMA Satellite Communications Hiroshi IKEMATSU Ken'ichi TAJIMA Kenji KAWAKAMI Kenji ITOH Yoji ISOTA Osami ISHIDA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1999/05/20 Vol. E82-C No. 5 pp. 699-707 Type of Manuscript: Special Section PAPER (Special Issue on Low Distortion Technology for Microwave Devices and Circuits) Category: Keyword: direct conversion, mixer, diode, third-order intermodulation, noise power ratio,
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An Asymmetrical Suspended Stripline Directional Coupler Osami ISHIDA Yoji ISOTA Moriyasu MIYAZAKI Fumio TAKEDA Norio TAKEUCHI
Publication: IEICE TRANSACTIONS (1976-1990) Publication Date: 1986/04/20 Vol. E69-E No. 4 pp. 333-334 Type of Manuscript: Special Section LETTER (Special Issue: Papers from 1986 National Convention IECE Japan) Category: Microwave Circuits Keyword:
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