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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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8.2-GHz band radar RFICs for an 8 × 8 phased-array FMCW receiver developed with 65-nm CMOS technology

  • Han, Seon-Ho (AI SoC Research Division, Electronics and Telecommunications Research Institute) ;
  • Koo, Bon-Tae (AI SoC Research Division, Electronics and Telecommunications Research Institute)
  • Received : 2020.02.11
  • Accepted : 2020.05.08
  • Published : 2020.12.14
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Abstract

We propose 8.2-GHz band radar RFICs for an 8 × 8 phased-array frequency-modulated continuous-wave receiver developed using 65-nm CMOS technology. This receiver panel is constructed using a multichip solution comprising fabricated 2 × 2 low-noise amplifier phase-shifter (LNA-PS) chips and a 4ch RX front-end chip. The LNA-PS chip has a novel phase-shifter circuit for low-voltage operation, novel active single-to-differential/differential-to-single circuits, and a current-mode combiner to utilize a small area. The LNA-PS chip shows a power gain range of 5 dB to 20 dB per channel with gain control and a single-channel NF of 6.4 dB at maximum gain. The measured result of the chip shows 6-bit phase states with a 0.35° RMS phase error. The input P1 dB of the chip is approximately -27.5 dBm at high gain and is enough to cover the highest input power from the TX-to-RX leakage in the radar system. The gain range of the 4ch RX front-end chip is 9 dB to 30 dB per channel. The LNA-PS chip consumes 82 mA, and the 4ch RX front-end chip consumes 97 mA from a 1.2 V supply voltage. The chip sizes of the 2 × 2 LNA-PS and the 4ch RX front end are 2.39 mm × 1.3 mm and 2.42 mm × 1.62 mm, respectively.

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References

  1. J. Drozdowicz et al., 35GHz FMCW drone detection system, in Proc. Int. Radar Symp. (Krakow, Poland), May 2016, pp. 1-4.
  2. C. J. Li and H. Ling, An investigation on the radar signatures of small consumer drones, IEEE Antennas Wireless Propag. Lett. 16 (2017), 649-652. https://doi.org/10.1109/LAWP.2016.2594766
  3. B. Kim et al., Drone detection with chirp-pulse radar based on target fluctuation models, ETRI J. 40 (2018), 188-196. https://doi.org/10.4218/etrij.2017-0090
  4. Y. Ju, Y. Jin, and J. Lee, Design and implementation of a 24GHz FMCW radar system for automotive applications, in Int. Radar Conf. (Lille, France), Oct. 2014, pp. 1-4.
  5. S. Jung et al., High dynamic range Ku-band CMOS transceiver IC for FMCW radar application, in Proc. IEEE MTT-S Int. Microwave Symp. (Honolulu, HI, USA), June 2017, pp. 1415-1417.
  6. T. Ma et al., A CMOS 76-81 GHz 2TX 3RX FMCW radar transceiver based on mixed-mode PLL chirp generator, in Proc. IEEE Asian Solid-State Circuits Conf. (Tainan, Taiwan), Nov. 2018, pp. 83-86.
  7. K. Koh and G. M. Rebeiz, 0.13-㎛ CMOS phase shifters for X-, Ku, and K-band phased arrays, IEEE J. Solid-State Circuits 42 (2007), 2535-2546. https://doi.org/10.1109/JSSC.2007.907225
  8. T. Yu and G. M. Rebeiz, A 22-24 GHz 4-element CMOS phased array with on-chip coupling characterization, IEEE J. Solid-State Circuits 43 (2008), 2134-2143. https://doi.org/10.1109/JSSC.2008.2001905
  9. K. Koh and G. M. Rebeiz, An X- and Ku-Band 8-element phased-array receiver in 0.18-㎛ SiGe BiCMOS technology, IEEE J. SolidState Circuits 43 (2007), 1360-1371.
  10. C. J. Lai and H. Ling, An investigation on the radar signatures of small consumer drones, IEEE Antennas Wireless Propag. Lett. 16 (2017), 649-652. https://doi.org/10.1109/LAWP.2016.2594766
  11. M. Oommen et al., An analysis of digital signal processing in monopulse radars, Int. J. Adv. Res. Comput. Commun. Eng. 3 (2014), 5665-5669.
  12. K. Kibaroglu, M. Sayginer, and G. M. Rebeiz, An Ultra Low-Cost 32-Element 28GHz Phased-Array Transceiver with 41 dBm EIRP and 1.0-1.6Gbps 16-QAM Link at 300 Meters, in Proc. IEEE Radio Frequency Integrated Circuits Symp. (Honolulu, HI, USA), June 2017, pp. 73-76.
  13. H. Lee, K. Kim, and B. Min, On-Chip T/R switchable balun for 5- to 6-GHz WLAN applications, IEEE Trans. Circuits Syst.-II: Express, Briefs 62 (2017), 6-10. https://doi.org/10.1109/TCSII.2014.2362662
  14. D. Shin et al., A high-power packaged four-element X-band phased-array transmitter in 0.13-um CMOS for radar and communication systems, IEEE Trans. Microwave Theory Techn. 61 (2013), 3060-3071. https://doi.org/10.1109/TMTT.2013.2271488
  15. R. V. Gatti, M. Dionigi, and R. Sorrentino, Computation of gain, noise figure, and third-order intercept of active array antennas, IEEE Trans. Antennas Propag. 52 (2004), 3139-3142. https://doi.org/10.1109/TAP.2004.835275
  16. H. Lai, J. Zhou, and B. Li, Noise figure measurement of multichannel phased array receiver module, in Proc. IEEE Int. Symp. Microwave, Antenna, Propag. EMC Technol. Wireless Commun. (Beijing, China), 2011, pp. 232-235.