A novel indirect method to determine the radiation impedance of an unknown antenna structure

J Jekkonen, Ian David Flintoft, M H Capstick, A C Marvin

Research output: Chapter in Book/Report/Conference proceedingOther chapter contribution


A novel indirect measurement technique is developed in which the impedance of an unknown antenna structure is determined by measuring the change in the
impedance of a second probe antenna while the unknown antenna is loaded by different known impedances. The feasibility of the approach is demonstrated using method-of-moments simulations of the interaction between two dipole
antennas in free space. The simulation results are supported by measurement on two dipole antennas. Applications to the measurement of the radiation impedance at the interface of box and cable system are also presented.
Original languageEnglish
Title of host publicationProceedings of the 16th International Zurich Symposium and Technical Exhibition on Electromagnetic Compatibility
Subtitle of host publication14-18 February, 2005
Place of PublicationZurich
PublisherLaboratory for Electromagnetic Fields and Microwave Electronics, Swiss Federal Institute of Technology Zurich
Number of pages4
ISBN (Print)3-9521199-9-7
Publication statusPublished - 14 Feb 2005

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