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International Journal of Antennas and Propagation
Volume 2013 (2013), Article ID 742636, 6 pages
http://dx.doi.org/10.1155/2013/742636
Research Article

An EIRP Measurement Method for Base-Station Antennas Using Field Strengths Measured along a Single Straight Line

Radio Technology Research Department, ETRI, 218 Gajeongno, Yuseong-gu, Daejeon 305-700, Republic of Korea

Received 9 November 2012; Revised 28 February 2013; Accepted 15 March 2013

Academic Editor: Michael Yan Wah Chia

Copyright © 2013 Soon-Soo Oh and Young-Hwan Lee. 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.

Abstract

We describe an EIRP measurement technique for a base-station antenna. The proposed method especially can be applied to the base-station antenna installed in real environments. Fresnel region measurement method is an optimal technique to avoid the far-field multipath interference, and, furthermore, it could shorten the measurement time. For detecting only the field strengths along a single straight line, we also propose a simple phase-retrieval method. For verification, a simulation and experiment have been performed. An anechoic chamber was utilized in this paper before the real environment test with the outdoor measurement system. The transformed far-field pattern and EIRP agree closely with the reference data within a valid angle. The proposed method can be applied for the EIRP in situ measurements without moving a vehicle loading the EIRP measurement apparatus.