A Fully Integrated Digital Polar Transmitter With Single-Ended Doherty PA and DLL-Based Three-Segment Hybrid DTC in 28 nm CMOS

This article presents a fully integrated digital polar transmitter (DPTX) incorporating an efficiency-enhanced digital power amplifier (DPA) and a high-resolution digital-to-time converter (DTC). The proposed single-ended Doherty (SED) PA topology with switched-capacitor (SC) arrays can generate fou...

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Veröffentlicht in:	IEEE journal of solid-state circuits 2024-02, Vol.59 (2), p.1-12
Hauptverfasser:	Wang, Tao, Li, Jieyang, Hua, Di, Lei, Liangbo, Cao, Peng, Xu, Peng, Xu, Jiawei, Hong, Zhiliang
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Carrier frequencies CMOS Delay-locked loop (DLL) digital polar transmitter (DPTX) digital power amplifier (DPA) digital-to-time converter (DTC) Doherty Efficiency efficiency enhancement Energy dissipation Impedance load modulation Modulation Nonlinearity Phase noise Power amplifiers power back-off (PBO) Power dissipation Power efficiency Power generation Power management SC power amplifier (SCPA) Segments single-ended power amplifier (PA) Switches Topology Transmitters
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