An 18.8-33.9 GHz, 2.26 mW Current-Reuse Injection-Locked Frequency Divider for Radar Sensor Applications
- Authors
- Oh, Kwang-Il; Ko, Goo-Han; Kim, Jeong-Geun; Baek, Donghyun
- Issue Date
- Apr-2021
- Publisher
- MDPI
- Keywords
- current-reuse; injection-locked frequency divider; radar sensor; wideband
- Citation
- SENSORS, v.21, no.7
- Journal Title
- SENSORS
- Volume
- 21
- Number
- 7
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/51415
- DOI
- 10.3390/s21072551
- ISSN
- 1424-8220
1424-3210
- Abstract
- An 18.8-33.9 GHz, 2.26 mW current-reuse (CR) injection-locked frequency divider (ILFD) for radar sensor applications is presented in this paper. A fourth-order resonator is designed using a transformer with a distributed inductor for wideband operating of the ILFD. The CR core is employed to reduce the power consumption compared to conventional cross-coupled pair ILFDs. The targeted input center frequency is 24 GHz for radar application. The self-oscillated frequency of the proposed CR-ILFD is 14.08 GHz. The input frequency locking range is from 18.8 to 33.8 GHz (57%) at an injection power of 0 dBm without a capacitor bank or varactors. The proposed CR-ILFD consumes 2.26 mW of power from a 1 V supply voltage. The entire die size is 0.75 mm x 0.45 mm. This CR-ILFD is implemented in a 65 nm complementary metal-oxide semiconductor (CMOS) technology.
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