宏輝科技有限公司

最新消息

首頁 > 最新消息

2011年於德國漢諾威ISH國際會議上發表『超高頻局部放電傳感器校準系統的比較』

2011-03-15

Introduction:In order to calibrate the Ultra-high frequency partial discharge (PD) sensors, we need to be able to generate a wide-band standard RF field to be incident on the sensor. A GTEM cell [1] is well suited for this purpose, as has been proposed by one of the authors more than ten years ago [2].

The effective height of an antenna is the ratio of the induced voltage to the incident field. An antenna subjected to incident electric field E, will have voltage V, induced at its terminal depending on its effective height he [3]. So with the use of GTEM cell, we can generate a standard calibration field and then calibrating the PD sensor to decide its effective height response against the frequency range that we are interested.

簡介:為了校正(準)局部放電(PD)測量儀所使用的超高頻傳感器,我們需要的是能夠產生一個寬帶標準的射頻場傳感器與一個GTEM無響應室就非常適合運用於此,其中一位作者之一已於十餘年前提出相關研究[1][2]。

天線的有效高度(He)是入射場感應電壓的比率。天線受到入射電場E,會有電壓V,其終端誘導將會取決於他的有效高度He [3]。所以我們可以利用 GTEM室 組合成一個標準的校準環境,然後校準PD傳感器來決定其對頻率範圍內的有效高度之響應,那就是我們所感興趣的。
 


無響應室(GTEM Cell)


傳感器與測試治具

結果:超高頻傳感器(UHF Sensors)之有效高度(He)響應圖@500-1500MHz