Article | GigaHertz 2003. Proceedings from the Seventh Symposium | Low Power Radio Transmitter

Title:
Low Power Radio Transmitter
Author:
Johan Wernehag: Department of Electroscience Department of Electroscience, Lund University, Sweden Henrik Sjölund: Department of Electroscience Department of Electroscience, Lund University, Sweden
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Year:
2003
Conference:
GigaHertz 2003. Proceedings from the Seventh Symposium
Issue:
008
Article no.:
013
No. of pages:
4
Publication type:
Abstract and Fulltext
Published:
2003-11-06
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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-¬Ķm 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 ¬ĶW 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.

GigaHertz 2003. Proceedings from the Seventh Symposium

Author:
Johan Wernehag, Henrik Sjölund
Title:
Low Power Radio Transmitter
References:

[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.

GigaHertz 2003. Proceedings from the Seventh Symposium

Author:
Johan Wernehag, Henrik Sjölund
Title:
Low Power Radio Transmitter
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