Time Reversal Efficiency Measurement in Reverberation Chamber

Author

Le Fur, Gwenn ; Besnier, Philippe ; Sharaiha, Ala

Author_Institution

Inst. of Electron. & Telecommun. of Rennes (IETR), Univ. of Rennes 1, Rennes, France

Volume

60

Issue

6

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

2921

Lastpage

2928

Abstract

The time reversal (TR) technique is applied in a reverberation chamber (RC) to perform an analysis of antenna efficiency. RC are mainly used for electromagnetic compatibility measurements. They provide through a stirring process the total radiated power from any electromagnetic source placed inside these overmoded cavities with a reasonable statistical uncertainty. Performances of TR techniques also increase with the number of modes or path densities, inherently high in RCs. In this paper, we show how a RC may be used in combination with the TR technique to measure ultra wide band (UWB) antenna efficiency with simple operation all over the frequency band. Principles of this new method called time reversal efficiency measurement (TREM) are provided together with experimental validations. Results are discussed and compared with simulations or other measurement methods.

Keywords

antenna radiation patterns; electromagnetic compatibility; reverberation chambers; time measurement; ultra wideband antennas; RC; TREM technique; UWB antenna efficiency analysis; electromagnetic compatibility measurement; overmoded cavity; path density; reasonable statistical uncertainty; reverberation chamber; stirring process; time reversal efficiency measurement technique; total radiated power; ultrawide band antenna efficiency analysis; Antenna measurements; Frequency domain analysis; Time measurement; Transmitting antennas; Ultra wideband antennas; Antenna radiation efficiency; reverberation chamber (RC); time reversal (TR);

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2012.2194631

Filename

6185643