Title :
Improved sensitivity in grounding search system using TV signal for phase reference
Author :
Tominaga, Tetsuya ; Kuramoto, Shoichi ; Kuwabara, Nobuo
Author_Institution :
NTT Multimedia Network Labs., Tokyo, Japan
Abstract :
Grounding search systems need improved sensitivity to search more effectively for grounding routes. The proposed method changes the phase reference signal source from the search signal to a TV signal. A minimum signal level of 17 dBuV at the antenna terminal is needed to obtain the phase reference. Experimentation using the new system demonstrated an improvement of 40 dB in the minimum detectable level and the phase measurement deviation improved from ±18 degrees to ±8 degrees
Keywords :
antennas; earthing; electromagnetic compatibility; electromagnetic interference; television broadcasting; TV signal; antenna terminal; grounding routes; grounding search systems; minimum detectable level; phase measurement deviation; phase reference; search signal; sensitivity improvement; Buildings; Dipole antennas; Frequency; Grounding; Phase detection; Phase measurement; Power system protection; Receiving antennas; Signal detection; TV;
Conference_Titel :
Electromagnetic Compatibility, 1999 International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
4-9980748-4-9
DOI :
10.1109/ELMAGC.1999.801385
