Wideband

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K/Ka-Band Hybrid-Packaged Four-Element Four-Beam Phased-Array Transmitter and Receiver Front-Ends With Optimized Beamforming Passive Networks

K/Ka-Band Hybrid-Packaged Four-Element Four-Beam Phased-Array Transmitter and Receiver Front-Ends With Optimized Beamforming Passive Networks 150 150
Author(s): Mengru Yang, Dixian Zhao, Chenyu Xu, Peng Gu, Yongran Yi, Mohan Guo, Xiangxi Yan, Liangliang Liu, Yuan Chai, Huiqi Liu, Xiaohu You

Abstract:

This article presents K/Ka-band four-element four-beam phased-array transmitter (TX) and receiver (RX) front-ends. Hybrid-packaged technology is employed, consisting of one TX/RX 65-nm CMOS beamformer and four 0.1- $mu$ m GaAs power amplifiers (PAs)/low-noise amplifiers (LNAs). Each beam maintains a full connection to every antenna element without degrading …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 14
Year of Publication: 2024
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2024.3391893
Publisher: IEEE

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A D-Band Wideband Single-Ended Neutralized Up-Conversion Mixer with Controlled LO Feedthrough in 65nm CMOS

A D-Band Wideband Single-Ended Neutralized Up-Conversion Mixer with Controlled LO Feedthrough in 65nm CMOS 150 150
Author(s): Chun Wang, Chenxin Liu, Hans Herdian, Abanob Shehata, Jill Mayeda, Kazuaki Kunihiro, Hiroyuki Sakai, Atsushi Shirane, Kenichi Okada

Abstract:

A D-band wideband passive single-ended up-conversion mixer with controlled LO feedthrough in 65nm CMOS process is presented in this letter. The LO feedthrough was controlled by the varactor and the neutralizing transmission line between the LO and RF ports of the mixer. In measurement, the proposed passive single-ended mixer had …

Published in: IEEE Solid-State Circuits Letters
Page(s): 1 – 1
Year of Publication: 2024
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2024.3393973
Publisher: IEEE

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A Wideband Low-Noise Linear LiDAR Analog Front-End Achieving 1.6-GHz Bandwidth, 2.7-pA/Hz0.5 Input-Referred Noise, and 103-dBΩ Transimpedance Gain

A Wideband Low-Noise Linear LiDAR Analog Front-End Achieving 1.6-GHz Bandwidth, 2.7-pA/Hz0.5 Input-Referred Noise, and 103-dBΩ Transimpedance Gain 150 150
Author(s): Zhao Zhang, Yidan Zhang, Yiqing Xu, Xinyu Shen, Guike Li, Nan Qi, Jian Liu, Nanjian Wu, Liyuan Liu

Abstract:

This letter presents a low-noise wideband analog front-end (AFE) circuit for long-range linear LiDAR. The nMOS feedforward transimpedance amplifier with inner feedback resistor (NFFR-TIA) is proposed to extend the bandwidth to around 400 MHz and reduce the input referred noise (IRN) concurrently with high-transimpedance gain and improved stability. Two stage continuous-time …

Published in: IEEE Solid-State Circuits Letters
Page(s): 131 – 134
Year of Publication: 2024
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2024.3378093
Publisher: IEEE

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