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Impedance determination of terminal power amplifiers for optimal antenna matching using load-pull method
Högskolan i Gävle, Ämnesavdelningen för elektronik.
Högskolan i Gävle, Ämnesavdelningen för elektronik.
University of Gavle.
2009 (English)In: 2009 IEEE INTERNATIONAL WORKSHOP ON ANTENNA TECHNOLOGY: , IEEE , 2009, 1-4 p.Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we present a single tuner based load-pull method for characterization of optimal antenna load impedance in mobile terminals. In the proposed load-pull set-up the mobile terminal itself is used as a source. The presented method can provide valuable data for antenna design since it determines the optimal impedance at the antenna connector/pad taken into account the full output circuitry of the mobile terminal. It reveals the modification of the power amplifier, PA, output impedance caused by the presence of saw filter, antenna switch, and transmission line possibly present between the PA and the antenna. With the presented method it is not only possible to characterize the optimum antenna impedance to present to the terminal in different bands and channels but also to reveal the impedance miss-match sensitivity for each channel.

Place, publisher, year, edition, pages
IEEE , 2009. 1-4 p.
National Category
URN: urn:nbn:se:kth:diva-67432DOI: 10.1109/IWAT.2009.4906934ISI: 000267753800070ISBN: 978-1-4244-4396-3 (print)ISBN: 978-1-4244-4395-6 (print)OAI: diva2:501182
2009 IEEE International Workshop on Antenna Technology, iWAT 2009; Santa Monica, CA; 2 March 2009 through 4 March 2009
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