BROWSE
Detail
Journal Article
Technique for fast triangular chirp modulation in FMCW PLL
Cited 2 time in 
Share 
Share
- Authors
- Han Gil Choi, Sang Heung Lee, Seong Hwan Cho
- Issue Date
- 2022-07
- Citation
- IEICE Electronics Express, v.19, no.14, pp.1-4
- ISSN
- 1349-2543
- Publisher
- 일본, 전자정보통신학회 (IEICE)
- Language
- English
- Type
- Journal Article
- Abstract
- Frequency-modulated continuous-wave (FMCW) radars necessitate fast frequency modulation. However, finite loop bandwidth of a phase-locked loop (PLL) limits the accuracy of fast frequency modulation. This paper proposes a phase compensation (PC) technique to address this limitation. The synthesizer PLL with the PC technique realizes fast and precise triangular chirp modulation by adding a compensating square wave phase before the integral path of the loop filter. The synthesizer is designed in 130-nm SiGe BiCMOS technology. Simulation results show rms frequency error improvement of 18 times over conventional PLL with a chirp bandwidth of 2.56GHz and 20 μs chirp period at 94 GHz.
- KSP Keywords
- 130-nm SiGe BiCMOS, 94 GHz, Chirp modulation, Frequency modulated continuous wave (FMCW) radar, Frequency-modulation(FM), SiGe BiCMOS technology, continuous wave(CW), frequency error(FE), loop bandwidth, loop-filter(LF), phase compensation