Effect of spectrum analyzer's impulse bandwidth on the measurement of EM waves emitted from partial discharges in multipath-rich environment

Autor:	Katsuo Isaka, Tetsuya Murayama, Masatake Kawada
Rok vydání:	2011
Předmět:	Physics Spectrum analyzer business.industry Acoustics Bandwidth (signal processing) Superheterodyne receiver Electrical engineering Field strength Impulse (physics) law.invention law Partial discharge Radio frequency Electrical and Electronic Engineering business Multipath propagation
Zdroj:	IEEJ Transactions on Electrical and Electronic Engineering. 6:193-199
ISSN:	1931-4973
DOI:	10.1002/tee.20644
Popis:	Superheterodyne spectrum analyzer (SA) has been widely used for receiving EM waves emitted from partial discharge (PD) because of its high sensitivity. Generally, resolution bandwidth is shown as a measurement parameter because the pulse response depends on the receiver's bandwidth. In this paper, we measure the impulse bandwidth of SA and describe the effect of the impulse bandwidth of SA on the measurement of EM waves emitted from PD in multipath-rich environment. The results showed that the field strength of the EM waves emitted from PD is proportional to the impulse bandwidth higher than about 200 kHz and signal-to-noise ratio (SNR) increases with the impulse bandwidth as in the measurement of pulsed RF signals. © 2011 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Databáze:	OpenAIRE
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