A time domain spherical near-field measurement facility for UWB antennas employing a hardware gating technique

M. D. Blech, M. M. Leibfritz, R. Hellinger, D. Geier, F. A. Maier, A. M. Pietsch, T. F. Eibert

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A spherical near-field antenna measurement facility employing a time domain hardware gating technique is presented. On-off keyed sinusoidal impulses are used as stimuli requiring wideband antennas with a bandwidth in excess of 400 MHz. The received signal is evaluated in the time interval after reaching the steady state and before multipath components arising in the non-ideal anechoic chamber distort the signal. An application specific pulse generator synthesizing sinusoidal impulses with a sub-nanosecond settling time and a low-cost equivalent time (ET) sampling receiver developed and optimized for this particular purpose are described. Measurement results of typical ultra-wideband (UWB) antennas show a significant improvement of the measured antenna pattern compared to conventional techniques.

Original languageEnglish
Pages (from-to)243-250
Number of pages8
JournalAdvances in Radio Science
Volume8
DOIs
StatePublished - 2010

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