Varactors

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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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248-GHz Subharmonic Mixer Last Transmitter With I/Q Imbalance and LO Feedthrough Calibration
248-GHz Subharmonic Mixer Last Transmitter With I/Q Imbalance and LO Feedthrough Calibration 150 150
Author(s): Seunghoon Lee, Junhyeong Kim, Kangseop Lee, Ho-Jin Song

Abstract:

This letter presents a 248 GHz compact direct-conversion transmitter with IQ and LO feedthrough (LOFT) calibration capability, which can achieve a data rate of 20-Gb/s with 16-QAM. The transmitter design incorporates a subharmonic double-balanced mixer configuration, simplifying the complexity of the local oscillator (LO) chain. Furthermore, a Wilkinson power divider …

Published in: IEEE Solid-State Circuits Letters
Page(s): 159 – 162
Year of Publication: 2024
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2024.3387285
Publisher: IEEE

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