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The Scientific World Journal
Volume 2014, Article ID 923893, 5 pages
Research Article

Low Power Upconversion Mixer for Medical Remote Sensing

1Department of Electrical and Electronics Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
2Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
3Department of Electrical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
4Department of Electrical and Electronic Engineering, Segi University, 47810 Petaling Jaya, Selangor, Malaysia

Received 5 March 2014; Revised 6 June 2014; Accepted 11 June 2014; Published 8 July 2014

Academic Editor: Mohammad Tawfik

Copyright © 2014 De Xing Lioe et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This work presents the design of a low power upconversion mixer adapted in medical remote sensing such as wireless endoscopy application. The proposed upconversion mixer operates in ISM band of 433 MHz. With the carrier power of −5 dBm, the proposed mixer has an output inferred 1 dB compression point of −0.5 dBm with a corresponding output third-order intercept point (OIP3) of 7.1 dBm. The design of the upconversion mixer is realized on CMOS 0.13 μm platform, with a current consumption of 594 μA at supply voltage headroom of 1.2 V.