Abstract
This paper presents a multi-channel frequency-modulated continuous-wave (FMCW) radar sensor operating in the frequency range from 91 to 97 GHz. The millimeter-wave radar sensor utilizes an SiGe chipset comprising a single signal-generation chip and multiple monostatic transceiver (TRX) chips, which are based on a 200-GHz fT HBT technology. The front end is built on an RF soft substrate in chip-on-board technology and employs a nonuniformly distributed antenna array to improve the angular resolution. The synthesis of ten virtual antennas achieved by a multiple-input multiple-output technique allows the virtual array aperture to be maximized. The fundamental-wave voltage-controlled oscillator achieves a single-sideband phase noise of -88 dBc/Hz at 1-MHz offset frequency. The TX provides a saturated output power of 6.5 dBm, and the mixer within the TRX achieves a gain and a double sideband noise figure of 11.5 and 12 dB, respectively. Possible applications include radar sensing for range and angle detection, material characterization, and imaging.
| Original language | English |
|---|---|
| Article number | 06144023 |
| Pages (from-to) | 861 - 869 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Microwave Theory and Techniques |
| Volume | 60 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2012 |
Fields of science
- 202019 High frequency engineering
- 202029 Microwave engineering
- 202033 Radar technology
JKU Focus areas
- Mechatronics and Information Processing