Konferensartikel

Low Power Radio Transmitter

Johan Wernehag
Department of Electroscience Department of Electroscience, Lund University, Sweden

Henrik Sjölund
Department of Electroscience Department of Electroscience, Lund University, Sweden

Ladda ner artikelhttp://www.ep.liu.se/ecp_article/index.en.aspx?issue=008;article=013

Ingår i: GigaHertz 2003. Proceedings from the Seventh Symposium

Linköping Electronic Conference Proceedings 8:13, s.

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Publicerad: 2003-11-06

ISBN:

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

A transmitter consisting of a voltage controlled oscillator (VCO) and power ampli-fier (PA) for the 400 MHz Medical Implanted Communication System band (MICS) was built in a standard 0.35-µm CMOS process. A push pull architecture was used for both the VCO and the PA. Two off-chip inductors were needed. The design was optimized for 400 µW output power at 3 V supply; which resulted in an efficiency of 26 %. This gives a total power consumption of 1.6 mW; of which the VCO uses about 0.3 mW.

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Referenser

[1] ETSI EN 301 839-1

[2] www.coilcraft.com

[3] Thomas H. Lee. The Design of CMOS Radio-Frequency Integrated Circuits. Cambridge University Press 1998.

[4] Henrik Sj¨oland. Improved Switched Tuning of Differential CMOS VCOs. IEEE transactions on circuits and system II: analog and digital signal processing; vol. 49; no. 5; may 2002.

[5] Ronold W. P. King; Glen S. Smith. Antennas in Matter. The MIT Press 1981.

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