A low-power CMOS class-E power amplifier for biotelemetry applications

Author

El-Desouki, Munir M. ; Deen, M. Jamal ; Haddara, Yaser M.

Author_Institution

Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada

Volume

1

fYear

2005

fDate

4-6 Oct. 2005

Abstract

Designing efficient, fully integrated transceivers that could operate from very low supply voltages and for biomedical implantable electronic systems is a major challenge. This paper presents a fully integrated, 2.4 GHz class-E power amplifier (PA), with a class-F driver stage. The circuit was fabricated in a standard 0.18 μm CMOS technology. Measurement results show a maximum drain efficiency of 38 % and a maximum gain of 17 dB. When operating from a 1.2 V supply, the PA delivers an output power of 9 mW with a power-added efficiency (PAE) of 33 %. The supply voltage can go down to 0.6 V with an output power of 2 mW and a PAE of 25 %. The circuit also has a second output to test the effects of using an on-chip filter in low-power designs. This work demonstrates the feasibility of using class-E PAs for short-range, low-power applications.

Keywords

CMOS integrated circuits; UHF power amplifiers; biomedical telemetry; low-power electronics; prosthetics; transceivers; 0.18 micron; 0.6 V; 1.2 V; 17 dB; 2 mW; 2.4 GHz; 9 mW; CMOS class-E power amplifier; CMOS technology; biomedical implantable electronic systems; biotelemetry applications; class-F driver stage; on-chip filter; transceivers; Biomedical telemetry; CMOS technology; Circuit testing; Driver circuits; Implants; Integrated circuit technology; Low voltage; Power amplifiers; Power generation; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2005 European

Print_ISBN

2-9600551-2-8

Type

conf

DOI

10.1109/EUMC.2005.1608888

Filename

1608888