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Design of a Single-Balanced Diode Mixer of FMCW Radar for Vehicle Detection  

한석균 (목포해양대학교 해양전자통신공학과)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.14, no.12, 2003 , pp. 1335-1340 More about this Journal
Abstract
In this paper, a single balanced diode Mixer for the homodyne FMCW radar to detect distance and velocity of a vehicle target is designed and implemented using a microstrip line and two schottky barrier beam lead diodes. This mixer is optimally designed to have less a conversion loss within the 100 MHz bandwidth with a little LO injection power and a higher LO isolation as soon as possible through the embedded electrical length of microsrtrip line placed between the coupler and diode matching, considering together LO matching condition. The measured results show 6 dB of conversion loss, 23 dB LO/RF isolation and 3 dBm of input 1l dB, respectively.
Keywords
Single Balance Diode Mixer; Homodyne FMCW Radar;
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