TY - GEN
T1 - The load impedance measurement in the time-frequency domain reflectometry system
AU - Choe, Tok Son
AU - Kwak, Ki Seok
AU - Shin, Yong June
AU - Park, Jin Bae
AU - Yoon, Tae Sung
PY - 2005
Y1 - 2005
N2 - In this paper, a new signal processing based methodology is suggested in order to measure the load impedance with high accuracy and resolution. This methodology is characterized by a chirp signal with Gaussian envelope which enables one to achieve time localization and to assign energy in the frequency band of interest. A normalized time-frequency cross correlation function is utilized to evaluate the reflection coefficient, and a cross time-frequency distribution function is used to acquire the phase difference between the input and the reflected signals. In this paper, the real experiments are achieved on a coaxial cable which is the typical transmission line in the electrical wiring system by using the time-frequency domain reflectometry (TFDR) system and terminal resistors to verify the performance of the suggested methodology. The experimental results of the TFDR based impedance measurement are compared with those of the commercial time domain reflectometry (TDR) system.
AB - In this paper, a new signal processing based methodology is suggested in order to measure the load impedance with high accuracy and resolution. This methodology is characterized by a chirp signal with Gaussian envelope which enables one to achieve time localization and to assign energy in the frequency band of interest. A normalized time-frequency cross correlation function is utilized to evaluate the reflection coefficient, and a cross time-frequency distribution function is used to acquire the phase difference between the input and the reflected signals. In this paper, the real experiments are achieved on a coaxial cable which is the typical transmission line in the electrical wiring system by using the time-frequency domain reflectometry (TFDR) system and terminal resistors to verify the performance of the suggested methodology. The experimental results of the TFDR based impedance measurement are compared with those of the commercial time domain reflectometry (TDR) system.
KW - Cross time-frequency distribution function
KW - Load impedance
KW - Normalized time-frequency cross correlation function
KW - Time-frequency Domain reflectometry
UR - http://www.scopus.com/inward/record.url?scp=33847221854&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847221854&partnerID=8YFLogxK
U2 - 10.1109/IMTC.2002.1006892
DO - 10.1109/IMTC.2002.1006892
M3 - Conference contribution
AN - SCOPUS:33847221854
SN - 0780372182
SN - 0780388798
SN - 9780780388796
T3 - Conference Record - IEEE Instrumentation and Measurement Technology Conference
SP - 497
EP - 500
BT - IMTC'05 - Proceedings of the IEEE Instrumentation and Measurement Technology Conference
T2 - IMTC'05 - Proceedings of the IEEE Instrumentation and Measurement Technology Conference
Y2 - 16 May 2005 through 19 May 2005
ER -