Abstract
This paper presents a comparative analysis of integrated transformers for a 77-GHz down-converter in a 28-nm fully depleted (FD) silicon-on-insulator (SOI) CMOS technology. The proposed down-converter, which is addressed to long-range automotive radar applications, is based on a fully differential mixer-first architecture and exploits two integrated transformers, i.e. an input transformer for single-ended-to-differential conversion of the 77-GHz signal and an inter-stage transformer to feed a current-driven passive Gilbert-cell. Both transformers have been properly designed, while exploiting the most suitable spiral configuration to meet the stringent requirements of automotive applications. To this aim, stacked, interleaved, and interstacked transformers have been compared by means of extensive electromagnetic simulations at 77 GHz. The comparison has been carried out in terms of insertion loss (IL) and transformer characteristic resistance (TCR), which are the most suitable figures of merit. The interstacked configuration provides the lowest IL (i.e., 1.2 dB at 77 GHz), thus resulting the best choice as input balun. The interleaved topology has been chosen instead as inter-stage transformer thanks to its high TCR (i.e., 1.9 kΩ at 77 GHz), which leads to better conversion gain.
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Medra, A., et al.: An 80 GHz low-noise amplifier resilient to the TX spillover in phase-modulated continuous-wave radars. IEEE J. Solid-State Circuits 51, 2299–2311 (2016)
Vigilante, M., Reynaert, P.: On the design of wideband transformer-based forth order matching networks for E-Band receivers in 28-nm CMOS. IEEE J. Solid-State Circuits 52, 2071–2082 (2017)
Fujibayashi, T., et al.: A 76- to 81-GHz multi-channel radar transceiver. IEEE J. Solid-State Circuits 52, 2226–2241 (2017)
Trotta, S., et al.: An RCP packaged transceiver chipset for automotive LRR and SRR systems in SiGe BiCMOS technology. IEEE Trans. Microw. Theor. Tech. 60, 778–794 (2012)
Ragonese, E., Scuderi, A., Giammello, V., Palmisano, G.: A SiGe BiCMOS 24-GHz receiver front-end for automotive short-range radar. Springer Analog Integr. Circuits Signal Process. 67, 121–130 (2011)
Ragonese, E., Scuderi, A., Giammello, V., Messina, E., Palmisano, G.: A fully integrated 24 GHz UWB radar sensor for automotive applications. In: IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, California, USA, pp. 306–307 (2009)
Nocera, C., Cavarra, A., Ragonese, E., Papotto, G., Palmisano, G.: Down-converter solutions for 77-GHz automotive radar sensors in 28-nm FD-SOI CMOS technology. In: 14th Conference on Ph.D. Research in Microelectronics & Electronics (PRIME), Prague, Czech Republic, pp. 153–156 (2018)
Italia, A., Carrara, F., Biondi, T., Scuderi, A., Ragonese, E., Palmisano, G.: The transformer characteristic resistance and its application to the performance analysis of silicon integrated transformers. In: IEEE Radio Frequency Integrated Circuits Symp. Dig. (RFIC), Long Beach, California, USA, pp. 597–600 (2005)
Carrara, F., Italia, A., Ragonese, E., Palmisano, G.: Design methodology for the optimization of transformer-loaded RF circuits. IEEE Trans. Circuits Syst. I: Regul. Papers 53, 761–768 (2006)
Cathelin, A.: Fully depleted silicon on insulator devices CMOS: the 28 nm node is the perfect technology for analog, RF, mmW, and mixed-signal system-on-chip integration. IEEE Solid State Circuits Mag. 9, 18–26 (2017)
Ragonese, E., Sapone, G., Palmisano, G.: High-performance interstacked transformers for mm-wave ICs. Wiley Microw. Opt. Technol. Lett. 52, 2160–2163 (2010)
Ragonese, E., Sapone, G., Giammello, V., Palmisano, G.: Analysis and modeling of interstacked transformers for mm-wave applications. Springer Analog Integr. Circuits Signal Process. 72, 121–128 (2012)
Giamello, V., Ragonese, E., Palmisano, G.: A transformer-coupling current-reuse SiGe HBT power amplifier for 77-GHz automotive radar. IEEE Trans. Microw. Theor. Tech. 60, 1676–1683 (2012)
Giammello, V., Ragonese, E., Palmisano, G.: Transmitter chipset for 24/77 GHz automotive radar sensors. In: IEEE Radio Frequency Integrated Circuits Symposium Digest (RFIC), Anaheim, California, USA, pp. 75–78 (2010)
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Cavarra, A., Nocera, C., Papotto, G., Ragonese, E., Palmisano, G. (2019). Transformer Design for 77-GHz Down-Converter in 28-nm FD-SOI CMOS Technology. In: Saponara, S., De Gloria, A. (eds) Applications in Electronics Pervading Industry, Environment and Society. ApplePies 2018. Lecture Notes in Electrical Engineering, vol 573. Springer, Cham. https://doi.org/10.1007/978-3-030-11973-7_23
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DOI: https://doi.org/10.1007/978-3-030-11973-7_23
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