Title :
Design of microstrip bandpass filter used for PD UHF detecting in GIS
Author :
Xiaoxing, Zhang ; Zhongrong, Xu ; Qian, Zhou ; Ju, Tang ; Caixin, Sun
Author_Institution :
Key Lab. of High Voltage Eng., Chongqing Univ., China
Abstract :
The ultra-high frequency antenna sensor is widely used for PD detecting in GIS. But the signal gained from antenna sensor is very weak and contains strong interference, and the energy loss of antenna sensor is not infinite out of the effective band, electromagnetic signal is coupled in antenna sensor at idling frequency band. So a micro-strip band-pass filter design method is introduced, and a band-pass filter and amplifier unit are designed based on micro-strip line theory. The high performance amplifier and the half-distributing parameter UHF filter whose work frequency band is 300∼1000 MHz and can cover with the frequency band of the antenna sensors. Testing results show that the performance of filter and amplifier is great and can be used to detect the feeble PD signals and suppress the low frequency interferes.
Keywords :
UHF amplifiers; UHF antennas; UHF detectors; band-pass filters; electromagnetic coupling; interference suppression; microstrip antennas; microstrip filters; microstrip lines; partial discharge measurement; 300 to 1000 MHz; GIS; PD UFH detection; amplifier unit; electromagnetic signal coupled antenna; energy losses; feeble PD signals; frequency interference suppression; half-distributing parameter; microstrip band-pass filter design method; microstrip bandpass filter; microstrip line theory; ultra-high frequency antenna sensor; Band pass filters; Design methodology; Electromagnetic coupling; Electromagnetic interference; Energy loss; Frequency; Geographic Information Systems; Microstrip filters; Testing; UHF antennas;
Conference_Titel :
Electrical Insulating Materials, 2005. (ISEIM 2005). Proceedings of 2005 International Symposium on
Print_ISBN :
4-88686-063-X
DOI :
10.1109/ISEIM.2005.193599
