Measurement of Efficiency Degradation Due to External Detuning of a Tunable Patch Antenna

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

Realistic deployment scenarios for narrow-band mobile terminal antennas can place the antenna in close proximity to sources of detuning such as the user’s hand. Undesirable side effects can include frequency shifts off-resonance and degraded impedance matching, reducing the overall system efficiency. Here,
3D radiation patterns and radiated efficiency measurements were used to evaluate the ability of a tunable matching network to preserve system efficiency in a patch antenna detuned with a hand phantom. The results indicated a trend for improving tuner benefit as a function of increasing severity of detuning.
However, the transducer efficiency of 69%—which is a major issue in system evaluation—was too low to justify the improved impedance matching with the degree of detuning examined here.
Original languageEnglish
Title of host publication2016 IEEE International Symposium on Antennas and Propagation (APSURSI)
Subtitle of host publicationProceedings of a meeting held 26 June - 1 July 2016, Fajardo, Puerto Rico, USA
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages2145-2146
Number of pages2
ISBN (Electronic)9781509028863
ISBN (Print)9781509028870
DOIs
Publication statusPublished - Nov 2016

Publication series

NameProceedings of the IEEE International Symposium on Antennas and Propagation (APSURSI)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISSN (Print)1947-1491

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