William Park & Associates Ltd.
Phase measurement device and method in microwave tomography system
A phase measurement method in a microwave tomography system may include transmitting a first Tx frequency signal, receiving a signal corresponding to the first Tx frequency signal, and measuring a first phase value; transmitting a second Tx frequency signal separated by a predetermined discrete frequency from the first Tx frequency signal, receiving a signal corresponding to the second Tx frequency signal, and measuring a second phase value; calculating a first phase difference based on a difference between the first and second phase values; calculating a second phase difference based on the discrete frequency; and determining an unwrapped phase value through comparison between the first and second phase differences.
Electronics and Telecommunications Research Institute
G G
G01N G01R
inventional inventional
Seong-Ho Soon-Ik Hyung-Do Hyuk-Je Jong-Moon
Son Jeon Choi Kim Lee