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UWB Antenna Measurements with the 20 GHz ENA Network Analyzer

Application Notes

Ultra-wideband (UWB) is a rapidly growing technology that is used to transmit information spread over a large bandwidth (> 500 MHz) for short-range and wide-bandwidth communications. Using the extremely low emission levels currently allowed by regulatory agencies, UWB technology is attracting attention as the core technology for personal-area network (PAN) connectivity such as Wireless USB.

Currently, commercial devices for PAN applications are being introduced in the frequency range below 10.6 GHz. For commercialized antennas such as WLAN or those used in cellular systems, RF models of vector network analyzers (VNAs) such as the E5071C ENA (4.5 GHz/8.5 GHz) and E5061/62A ENA-L (1.5 GHz /3 GHz) network analyzers are widely used in the design process and on the production line to measure the return loss or VSWR. However, since UWB systems use a wider frequency range, UWB antenna measurements require higher frequency VNAs on the production line.

This document discusses the benefits of using 20 GHz ENA network analyzers for UWB antenna measurements, and present a measurement example using the ENA’s gating function.

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