Abstract
In this paper, we analyze the effects of IF noise due to transmitter-signal leakage for homodyne frequency-modulated continuous-wave (FMCW) radar with a single-antenna configuration. We find that the magnitude of the IF noise from the front end can be reduced by matching the LO-signal delay time with that of the antenna leakage. As the IF noise has periodic singularities, the spectrum of the IF noise can be modeled by a VCO modulation signal (except low-frequency elements near DC). Based on an analysis of IF noise, we implement a W-band homodyne FMCW radar sensor and the performances are verified outdoors. The presented concept can be applicable to the design of low-cost homodyne FMCW radars with a single-antenna configuration.
Original language | English |
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Pages (from-to) | 512-515 |
Number of pages | 4 |
Journal | Microwave and Optical Technology Letters |
Volume | 46 |
Issue number | 5 |
DOIs | |
State | Published - 5 Sep 2005 |
Keywords
- FMCW radar
- Leakage
- Single-antenna configuration