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• W3043184804 abstract "A pulsed chirping phased-array transceiver (TRX) is demonstrated for X-band synthetic aperture radar (SAR) application. The phased-array TRX is implemented on a single CMOS chip with beamsteering/beamforming capabilities. The chip-scale radar TRX is composed of four transmitters (TXs) and four receivers (RXs) operating at 10-GHz center frequency with 1-GHz bandwidth (BW). To achieve the wideband beamsteering with a fine angle step, the two-stage delay control in the TX is proposed, where a delay-locked loop (DLL) -based multi-phase synthesizer (MPS) is used to control the coarse true-time delay of the baseband chirp, and the active phase shifters (PS) in radio frequency (RF) path are used for fine phase tuning. Fabricated in a 65-nm CMOS technology, the TRX consumes 228 mW for each channel at a 1.2-V supply, delivering ~10.2-dBm power with $mu text{s}$ . The prototype phased-array radar TRX chip is demonstrated with the antenna arrays consisting of Vivaldi antennas of 8-dBi gain, 6-GHz BW, and 6-cm pitch distance. Experiments indicate that beamsteering/beamforming up to ±60° with a step of ~1° is achieved. SAR imaging experiment is carried out based on both the two-stage beamsteering in the TXs and the digital beamforming in the RXs, proving the capability of the prototype phased-array radar TRX chip for the SAR imaging applications." @default.
• W3043184804 created "2020-07-23" @default.
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• W3043184804 date "2020-11-01" @default.
• W3043184804 modified "2023-10-16" @default.
• W3043184804 title "A 4TX/4RX Pulsed Chirping Phased-Array Radar Transceiver in 65-nm CMOS for X-Band Synthetic Aperture Radar Application" @default.
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• W3043184804 doi "https://doi.org/10.1109/jssc.2020.3005809" @default.
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