An un-intrusive optically modulated scatterer technique for unwired small antenna measurement

Lao, Ray-Rong; Huang, Ming-Hui; Shay, Wen-Tron; Tarng, Jenn‐Hwan

doi:10.1109/cpem.2008.4574834

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2009

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“…In this letter, we propose a novel method to measure the radiation pattern of unwired small antennas by OMS technique [8]. The radiation pattern of a small dipole antenna is measured with the proposed OMS technique and is compared with the results simulated with CST Microwave Studio.…”

Section: Introductionmentioning

confidence: 99%

Optically Modulated Scatterer Technique for Radiation Pattern Measurement of Small Antennas and RFID Tags

Lao

Shay

Hsu

et al. 2009

Antennas Wirel. Propag. Lett.

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The optically modulated scatterer (OMS) technique is developed for the electromagnetic field distribution measurement with minimum disturbance to the field under test. In this letter, we present a novel method to measure the radiation pattern of unwired small dipole-like antennas such as radio frequency identification (RFID) tag antennas by OMS technique. The radiation pattern could be measured by this technique without any metallic feeding wire that would disturb the field pattern. The variation of the radiation pattern caused by the materials attached to an RFID tag antenna could also be evaluated with this technique.Index Terms-Optically modulated scatterer (OMS), radiation pattern, radio frequency identification (RFID), tag antenna.

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Section: Introductionmentioning

confidence: 99%