NDLI: DSS modulator using the SIDO dc−dc converter for the CMOS RF PA integrated circuit

Content Provider	IET Digital Library
Author	Oh, Sungjae Bae, Jongseok Oh, Hansik Lim, Wonseob Yang, Youngoo
Abstract	A dynamic supply switching (DSS) modulator using a single-inductor dual-output (SIDO) dc−dc converter for complimentary metal-oxide semiconductor (CMOS) radio frequency (RF) power amplifier (PA) integrated circuits is presented. The DSS modulator consists of the SIDO dc−dc converter and a supply switching circuit (SSC). The SIDO dc−dc converter requires only one off-chip inductor while generating two of the dc voltages. The SSC dynamically switches the high and low dc voltages according to the modulated signal envelope. The supply switching control voltage, which is generated from the envelope, is optimised for maximum efficiency improvement. The proposed DSS PA using the SIDO dc−dc converter and the SSC was fabricated using a 0.18 μm CMOS process for a 1.75 GHz frequency band and a long-term evolution (LTE) application. For the LTE 16-QAM signal with the peak-to-average power ratio (PAPR) of 7.5 dB, the measured efficiency of the DSS PA is 33.8% at the average output power of 21 dBm, thereby satisfying the adjacent channel leakage power ratio (ACLR) level of −30.1 dBc. The measured efficiency of the DSS PA at an average output power of 15 dBm is 24.8%, which is higher than that of the stand-alone PA by 13.3%.
Starting Page	597
Ending Page	601
Page Count	5
ISSN	17518725
Volume Number	13
e-ISSN	17518733
Issue Number	Issue 5, Apr (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/13/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5465
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2019-01-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Amplifiers CMOS Integrated Circuit CMOS Process CMOS RF PA Integrated Circuit Complimentary Metal-oxide Semiconductor DC-DC Power Converter DSS Modulator DSS PA Dynamic Supply Switching Modulator Efficiency 24.8 Percent Efficiency 33.8 Percent Electrical/electronic Equipment Energy Utilisation Frequency 1.75 GHz High Dc Voltage Inductor Long Term Evolution Long-term Evolution Low Dc Voltage Low Power Electronics LTE 16-QAM Signal Microwave IC Mobile Radio System Modulated Signal Envelope Modulation And Coding Method Off-chip Inductor Power Electronics Power Supply Quadrature Amplitude Modulation Radio Frequency Power Amplifier Integrated Circuit Radiofrequency Integrated Circuit SIDO Dc−dc Converter Single-inductor Dual-output Dc−dc Converter Size 0.18 Mum Supervisory Circuit Supply Switching Circuit Supply Switching Control Voltage UHF Power Amplifiers
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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