A 27-mW <i>W</i>-Band Radar Receiver With Effective TX Leakage Suppression in 28-nm FD-SOI CMOS

Papotto, Giuseppe; Nocera, Claudio; Finocchiaro, Alessandro; Parisi, Alessandro; Cavarra, Andrea; Castorina, A.; Ragonese, Egidio; Palmisano, G.

doi:10.1109/tmtt.2021.3074600

Cited by 16 publications

(18 citation statements)

References 25 publications

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“…The SC LPF was integrated in a 28-nm FD-SOI CMOS technology by STMicroelectronics within a complete 77-GHz radar receiver [25]. The adopted backend-of-line (BEOL) provides eight copper layers in addition to a top aluminum one.…”

Section: Resultsmentioning

confidence: 99%

A 1-V 7th-Order SC Low-Pass Filter for 77-GHz Automotive Radar in 28-nm FD-SOI CMOS

et al. 2021

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This paper presents a switched capacitor low-pass filter in a 28-nm fully depleted silicon on insulator CMOS technology for 77-GHz automotive radar applications. It is operated at a power supply as low as 1 V and guarantees 5-dB in-band voltage gain while providing out-of-band attenuation higher than 36 dB and a programmable passband up to 30 MHz. A double sampling technique is adopted, which allows high operating frequency to be achieved while saving power. Moreover, low-voltage biasing and common-mode feedback circuits are exploited to guarantee an almost rail-to-rail output voltage swing. The proposed filter provides an output 1-dB compression point as high as 8.7 dBm with a power consumption of 9 mW. To the authors’ knowledge, this is the first SC-based implementation of a low pass filter for automotive radar applications.

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Section: Resultsmentioning

confidence: 99%

A 1-V 7th-Order SC Low-Pass Filter for 77-GHz Automotive Radar in 28-nm FD-SOI CMOS

et al. 2021

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“…For the next generation of automotive radar sensors, a sensitivity as low as −110 dBm has been targeted, which imposes a stringent requirement for both the RX noise figure (NF) and the VCO PN. Specifically, assuming an RX NF of around 11 dB, the targeted RX sensitivity demands a VCO PN lower than −90 dBc/Hz at a 1-MHz offset frequency from the 77-GHz carrier [1], [9].…”

Section: System Descriptionmentioning

confidence: 99%

“…where G T and G R are the gains of the transmitting and receiving antennas, respectively, λ is the signal wavelength, L ATM is the atmosphere propagation loss, and σ is the radar cross section of the target. The atmosphere loss at 77 GHz is around 0.3-0.5 dB/km, and the radar cross section for a mid-size car is assumed to be 30 m 2 , whereas the receiving and transmitting antenna gain are typically around 20 dBi [9]. Fig.…”

Section: System Descriptionmentioning

confidence: 99%

A W-Band Transmitter for Automotive Radar Sensors in 28-nm FD-SOI CMOS

Papotto

Parisi

Finocchiaro

et al. 2023

IEEE Trans. Microwave Theory Techn.

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This article presents a 77-GHz transmitter (TX) in a 28-nm fully depleted silicon-on-insulator CMOS technology for automotive radar applications. The circuit has been designed to simultaneously fulfill both short-/medium-range (S/MR) and long-range (LR) operations. It exploits an LO frequency doubling architecture, which allows preventing voltage-controlled oscillator (VCO) pulling effects for improved phase noise (PN) performance. The proposed TX comprises a 38-GHz VCO driving a frequency doubler and then a current-combining two-path power amplifier. The VCO takes advantage of a novel tank architecture to cope S/MR and LR requirements with an effective and silicon area-saving solution. The proposed TX also features a feedback loop that allows properly setting the power delivered to the output load. It exhibits a 5-GHz bandwidth, ranging from 76 to 81 GHz, with a PN performance as low as −93 dBc/Hz at a 1-MHz offset frequency from a 77-GHz carrier. It is also able to deliver a maximum output power as high as 17.5 dBm with a dynamic control range of around 13 dB. The overall power consumption is 351 mW.

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“…During the recent decade, advances in nanoscale Complementary Metal-Oxide-Semiconductor (CMOS) technologies have boosted the maximum oscillation frequency ( f max ) of transistors far from the mm-wave range, spurring an explosion of high-frequency applications such as millimeter-wave line-of-sight (LOS) wireless communication link system in the E-band, automotive radars in 77 GHz, or 3D imaging systems [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. For the frequency modulated continuous wave (FMCW) radar sensor applications, frequency hopping approaches have been introduced to avoid intentional interference and security threats such as spoofing and jamming attacks [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

A 78.8–84 GHz Phase Locked Loop Synthesizer for a W-Band Frequency-Hopping FMCW Radar Transceiver in 65 nm CMOS

Trinh¹,

Nam²,

Song³

et al. 2022

Sensors

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A W-band integer-N phase-locked loop (PLL) for a frequency hopping frequency modulation continuous wave (FMCW) radar is implemented in 65-nm CMOS technology. The cross-coupled voltage-controlled oscillator (VCO) was designed based on a systematic analysis of the VCO combined with its push-pull buffer to achieve high efficiency and high output power. To provide a frequency hopping functionality without any overhead in the implementation, the center frequency of the VCO is steeply controlled by the gate voltage of the buffer, which effectively modifies the susceptance of the VCO load. A stand-alone VCO with the proposed architecture is fabricated, and it achieves an output power of 13.5 dBm, a peak power efficiency of 9.6%, and a tuning range of 3.5%. The phase noise performance of the VCO is −92.6 dBc/Hz at 1-MHz and −106.1 dBc/Hz at 10 MHz offset. Consisting of a third-order loop filter and a divider chain with a total modulus of 48, the locking range of the implemented PLL with the cross-coupled VCO is recorded from 78.84 GHz to 84 GHz, and its phase noise is −85.2 dBc/Hz at 1-MHz offset.

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A 27-mW W-Band Radar Receiver With Effective TX Leakage Suppression in 28-nm FD-SOI CMOS

Cited by 16 publications

References 25 publications

A 1-V 7th-Order SC Low-Pass Filter for 77-GHz Automotive Radar in 28-nm FD-SOI CMOS

A 1-V 7th-Order SC Low-Pass Filter for 77-GHz Automotive Radar in 28-nm FD-SOI CMOS

A W-Band Transmitter for Automotive Radar Sensors in 28-nm FD-SOI CMOS

A 78.8–84 GHz Phase Locked Loop Synthesizer for a W-Band Frequency-Hopping FMCW Radar Transceiver in 65 nm CMOS

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