微小雑音源の位置標定法 : 可変周波数センサ(学生 / 若手技術者発表会および一般)

概要

論文の詳細を見る
A method for dctecting the location of a point noise source is proposed. The measuring system consists of parallel transmission line sensors, a switching circuit and it's controller, and a receiver. So real time measurement is realized by using the proposed system at the frequency of 500 MHz. Further more, the paper reports a high sensitive variable frequency sensor. In order to expand the measuring band in lower frequency, variable capacitors are inserted into the feed points and the end point of the transmission lines. By adjusting the bias voltage, the system can be utilized the frequency range of 65〜90 MHz. The sensor yields a sensitivity of 30 dB higher than the normal transmission sensor with the same size, because the sensor matches the impedance of the coaxial feed line (50Ω).
社団法人映像情報メディア学会の論文
2002-03-02