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Design and Stability Analysis of the Variable-Sawtooth-Based PWM Controller for the AC-Coupled Envelope Tracking Supply Modulator
Design and Stability Analysis of the Variable-Sawtooth-Based PWM Controller for the AC-Coupled Envelope Tracking Supply Modulator 150 150
Author(s): Peng Xu, Tao Wang, Xueli Zhang, Peng Cao, Jiawei Xu, Zhiliang Hong

Abstract:

This letter analyzes the proposed variable-sawtooth-based PWM controller for the ac-coupled envelope tracking (ET) supply modulator (SM). The ET SM includes a linear amplifier and a switching power modulator (SPM). The SPM maintains the voltage across the ac-coupling capacitor and provides an output current in a power-efficient manner. A 10-MHz …

Published in: IEEE Solid-State Circuits Letters
Page(s): 151 – 154
Year of Publication: 2024
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2024.3384345
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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