McCabe, S. & Scott, J. (2011). Measurement of antennas and microwave components using time-domain reflectometry of a voltage impulse. IEEE Microwave and Wireless Components Letters, (99), 1-1.
Permanent Research Commons link: http://hdl.handle.net/10289/5842
Band-pass microwave systems such as ultra-wideband antennas are traditionally characterized in the frequency-domain through a vector network analyzer in an anechoic chamber. A recent study proved antennas could be accurately measured in the time-domain using a step-function time-domain reflectometer (TDR), without the need for an anechoic chamber. We propose a new advance in the TDR characterization method. An impulse generator is employed in place of the step generator in a TDR set-up. The advantage conferred by this change is that more energy is available beyond a given frequency than with a step, and so a higher signal-to-noise ratio is achieved. The theoretical result is compared with measurement.
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