A 16-to-256QAM G-Band Subharmonic Phase-Modulating Transmitter for Beyond-5G Communications

Digest of technical papers/Digest of technical papers - IEEE International Solid-State Circuits Conference 2026

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Authors: Jia Zhou, Jieqiong Du, Chao-Jen Tien, Jhih-Wei Chen, Ruei-Chen Soong, Francisco Cardenas Beltran, Lachlan Cuskelly, Christopher Chen, Minji Zhu, Adrian J. Tang, Sai-Wang Tam, Mau-Chung Frank Chang
DOI: 10.1109/isscc49663.2026.11409097
Cited by: 0
References: 7

Abstract

This paper presents a highly integrated G-band digital transmitter for beyond-5G communications featuring: 1) a subharmonic phase-modulating architecture with timeinvariant phase tripling, 2) a GS/s segmented 9-bit digital-to-phase converter (DTPC) with a sub-degree rms error, and 3) a carrier-saturating and multiplying chain for direct QAM synthesis. It achieves$51.2 \text{Gbps} / 16 \text{QAM}, 24 \text{Gbps} / 64 \text{QAM}$, and 8Gbps/256QAM with −2 dBm peak output power while consuming$280-\text{to}-350 \text{mW}$DC power.

Fields of Study & Subjects

Radio Frequency Integrated Circuit Design Advanced Power Amplifier Design Advancements in PLL and VCO Technologies

Publication details

Journal / source
Digest of technical papers/Digest of technical papers - IEEE International Solid-State Circuits Conference
Pages
354–356
Publication date
15 February 2026
Language
EN