Low power 2.4 GHz RF transmitter for satellite subsystem using CORDIC based frequency translator

Author

Brahmachari, Amrita ; Paily, Roy P.

Author_Institution

Dept. of Electron. & Electr. Eng., Indian Inst. of Technol. Guwahati, Guwahati, India

fYear

2012

fDate

20-22 Sept. 2012

Firstpage

1

Lastpage

5

Abstract

This paper presents a CORDIC based frequency translator for low power radio frequency transmitter to be used in intra-satellite communication. As against the conventional method of using analog up-conversion mixers for frequency translation, an idea has been proposed to use CORDIC for translation. As CORDIC replaces mixer, digital-to-analog converter and low pass filter, overall hardware decreases and the power consumed also goes down to 2mW. Thus there is a 45% power saving compared to conventional architectures. An envelope tracking power amplifier is implemented that delivers a linear output of 223dBm. Entire design is simulated and verified using Cadence^® and Synopsys^® in 180nm technology and consumes a total power of 12mW.

Keywords

frequency convertors; mixers (circuits); power amplifiers; radio transmitters; satellite communication; signal processing; CORDIC; RF transmitter; analog up-conversion mixer; envelope tracking power amplifier; frequency 2.4 GHz; frequency translator; intrasatellite communication; power 12 mW; power 2 mW; radio frequency transmitter; satellite subsystem; size 180 nm; Computer architecture; Frequency modulation; Mixers; Radio frequency; Transmitters; Zigbee; CORDIC; Offset Quadrature Phase Shift Keying modulation; Power Amplifier; Telecommand and Telemetry System;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Optical Communications Networks (WOCN), 2012 Ninth International Conference on

Conference_Location

Indore

ISSN

2151-7681

Print_ISBN

978-1-4673-1988-1

Type

conf

DOI

10.1109/WOCN.2012.6335522

Filename

6335522