Modulation

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A 25-kHz-BW 97.4-dB-SNDR SAR-Assisted Continuous-Time 1-0 MASH Delta–Sigma Modulator With Digital Noise Coupling

A 25-kHz-BW 97.4-dB-SNDR SAR-Assisted Continuous-Time 1-0 MASH Delta–Sigma Modulator With Digital Noise Coupling 150 150
Author(s): Dong-Hun Lee, Kent Edrian Lozada, Ye-Dam Kim, Ho-Jin Kim, Youngjae Cho, Michael Choi, Seung-Tak Ryu

Abstract:

This article introduces a high-resolution continuous-time delta–sigma modulator (CT DSM) architecture that incorporates a successive approximation register (SAR)-assisted digital noise coupling (DNC) technique and a multi-stage noise-shaping (MASH) structure. The limited maximum stable amplitude (MSA) problem due to the high-order-shaped large quantization error ( $Etextsubscript{1}$ ) in the previous …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 10
Year of Publication: 2024
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2024.3391902
Publisher: IEEE

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A 50-Gb/s Multicarrier Transmitter Using DAC-Based Polar Drivers in 22-nm FinFET

A 50-Gb/s Multicarrier Transmitter Using DAC-Based Polar Drivers in 22-nm FinFET 150 150
Author(s): Il-Min Yi, Srujan Kumar Kaile, Yuanming Zhu, Julian Camilo Gomez Diaz, Sebastian Hoyos, Samuel Palermo

Abstract:

A digital-to-analog converter (DAC)-based polar transmitter (TX) is proposed for multicarrier signaling in wireline applications. The proposed TX achieves a 50-Gb/s total data rate with maximized spectral efficiency by using three parallel 5-GS/s DAC-based drivers and two orthogonal carriers of 5 and 10 GHz. The three DAC-based drivers operating …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 12
Year of Publication: 2024
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2024.3376079
Publisher: IEEE

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A 4-Element Ka-Band Phased-Array Receiver With Code-Domain Hybrid Beamforming

A 4-Element Ka-Band Phased-Array Receiver With Code-Domain Hybrid Beamforming 150 150
Author(s): Ziyi Lin, Haikun Jia, Chuanming Zhu, Wei Deng, Huabing Liao, Bao Shi, Lujie Hao, Xiangrong Huang, Baoyong Chi

Abstract:

This letter presents a 4-element phased-array receiver with code-domain hybrid beamforming (CDHBF) in 65-nm CMOS technology. Code-division multiplexing is used to fully preserve the flexibility in the digital domain while using a single RF interface, which reduces the RF chain complexity, reduces the chip area, and improves power efficiency. Phase …

Published in: IEEE Solid-State Circuits Letters
Page(s): 123 – 126
Year of Publication: 2024
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2024.3379562
Publisher: IEEE

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