Presentation 2022-03-04
Proximity sensor circuit and application to VNA
Satoru Shimizu, Kazuki Shintani, Koudai Nagatomo, Hisato Iwai, Takuya Kurihara, Yoshinori Suzuki,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Our research group has been researching and developing proximity sensor focusing on changes in antenna impedance. In the conventional circuit, the intensity of reflected power is measured by a detector. However, it has the disadvantage of being easily affected by interference waves. This time, we aimed for a high-performance and interference-resistant sensing circuit by making it possible to measure with a vector quantity. The sensing circuit is similar to the VNA (Vector Network Analyzer) configuration that measures S11. Therefore, we expanded it further and prototyped a 2-port vector network analyzer. In this paper, we explain the overview of the circuit.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Proximity Sensor / VNA / Antenna Impedance
Paper # SRW2021-90
Date of Issue 2022-02-23 (SRW)

Conference Information
Committee RCS / SR / SRW
Conference Date 2022/3/2(3days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English) Mobile Communication Workshop
Chair Eiji Okamoto(Nagoya Inst. of Tech.) / Suguru Kameda(Hiroshima Univ.) / Hanako Noda(Anritsu)
Vice Chair Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Kazuto Yano(ATR) / Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Denki Univ.) / Hirokazu Sawada(NICT)
Secretary Toshihiko Nishimura(NEC) / Tomoya Tandai(Panasonic) / Fumihide Kojima(Mie Univ.) / Osamu Takyu(Tokai Univ.) / Kentaro Ishidu(NTT) / Kazuto Yano(NTT) / Keiichi Mizutani(NIigata Univ.) / Kentaro Saito / Hirokazu Sawada
Assistant Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Mai Ohta(Fukuoka Univ.) / Taichi Ohtsuji(NEC) / WANG Xiaoyan(Ibaraki Univ.) / Akemi Tanaka(MathWorks) / Akihito Noda(Nanzan Univ.)

Paper Information
Registration To Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Proximity sensor circuit and application to VNA
Sub Title (in English)
Keyword(1) Proximity Sensor
Keyword(2) VNA
Keyword(3) Antenna Impedance
1st Author's Name Satoru Shimizu
1st Author's Affiliation Doshisha University/ATR(Doshisha Univ./ATR)
2nd Author's Name Kazuki Shintani
2nd Author's Affiliation Doshisha University(Doshisha Univ.)
3rd Author's Name Koudai Nagatomo
3rd Author's Affiliation Doshisha University(Doshisha Univ.)
4th Author's Name Hisato Iwai
4th Author's Affiliation Doshisha University(Doshisha Univ.)
5th Author's Name Takuya Kurihara
5th Author's Affiliation ATR(ATR)
6th Author's Name Yoshinori Suzuki
6th Author's Affiliation ATR(ATR)
Date 2022-03-04
Paper # SRW2021-90
Volume (vol) vol.121
Number (no) SRW-393
Page pp.pp.96-99(SRW),
#Pages 4
Date of Issue 2022-02-23 (SRW)