TY - GEN
T1 - Effect of cooling on the probe system sensitivity for low signal strength RFI problems
AU - Li, Guang Hua
AU - Huang, Wei
AU - Pommerenke, David
PY - 2013/12/1
Y1 - 2013/12/1
N2 - Only highly sensitive probe systems can detect the weak field strengths that cause radio-frequency-interference (RFI) problems typically found within cell phones. The sensitivity of the probe systems depends on the probe factor and on the noise floor. The effect of cooling by liquid nitrogen on the received signal strength and the noise floor of three resonant probe systems has been investigated. They operate at the GSM, GPS, and WiFi frequency bands. Cooling increases the Q-factor of these resonant probes, increases the received signal, and lowers the noise floor. The sensitivity of the system, defined as the signal strength at which the Signal-to-Noise Ratio is equal to 0 dB improves by 3-6 dB.
AB - Only highly sensitive probe systems can detect the weak field strengths that cause radio-frequency-interference (RFI) problems typically found within cell phones. The sensitivity of the probe systems depends on the probe factor and on the noise floor. The effect of cooling by liquid nitrogen on the received signal strength and the noise floor of three resonant probe systems has been investigated. They operate at the GSM, GPS, and WiFi frequency bands. Cooling increases the Q-factor of these resonant probes, increases the received signal, and lowers the noise floor. The sensitivity of the system, defined as the signal strength at which the Signal-to-Noise Ratio is equal to 0 dB improves by 3-6 dB.
KW - Quality factor
KW - radio-frequency interference (RFI)
KW - resonant magnetic field probe
KW - signal-to-noise ratio
UR - http://www.scopus.com/inward/record.url?scp=84893190638&partnerID=8YFLogxK
U2 - 10.1109/ISEMC.2013.6670396
DO - 10.1109/ISEMC.2013.6670396
M3 - Conference paper
AN - SCOPUS:84893190638
SN - 9781479904082
T3 - IEEE International Symposium on Electromagnetic Compatibility
SP - 134
EP - 137
BT - Proceedings - 2013 IEEE International Symposium on Electromagnetic Compatibility, EMC 2013
T2 - 2013 IEEE International Symposium on Electromagnetic Compatibility
Y2 - 5 August 2013 through 9 August 2013
ER -