Measurement of deep tissue implanted antenna efficiency using a reverberation chamber

Yomna El-Saboni; Matthew K. Magill; Gareth A. Conway; Simon L. Cotton; William G. Scanlon

doi:10.1109/JERM.2017.2765638

Measurement of deep tissue implanted antenna efficiency using a reverberation chamber

Yomna El-Saboni
, Matthew K. Magill
, Gareth A. Conway
, Simon L. Cotton
, William G. Scanlon

Queen's University Belfast

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the use of a reverberation chamber for the experimental measurement of deep implant antenna radiation efficiency. The technique was able to measure the extremely low efficiencies associated with deep implant antennas inside a muscle tissue-mimicking liquid phantom. Results were obtained for a range of insulated and un-insulated antennas with efficiencies as low as 0.06%. Analysis showed that while measurement errors were dominated by positioning variability, spurious feed cable radiation is still a significant factor that must be considered. Depending on the radiation characteristics of the antenna under test and the feed cable routing within the phantom, cable radiation could lead to errors of up to 4.5 dB.

Original language	English
Article number	8080221
Pages (from-to)	90-97
Number of pages	8
Journal	IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology
Volume	1
Issue number	2
DOIs	https://doi.org/10.1109/JERM.2017.2765638
Publication status	Published - Dec 2017
Externally published	Yes

Keywords

Cable effects
implant antenna
radiation efficiency
reverberation chamber
tissue equivalent phantom

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10.1109/JERM.2017.2765638

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title = "Measurement of deep tissue implanted antenna efficiency using a reverberation chamber",

abstract = "We investigate the use of a reverberation chamber for the experimental measurement of deep implant antenna radiation efficiency. The technique was able to measure the extremely low efficiencies associated with deep implant antennas inside a muscle tissue-mimicking liquid phantom. Results were obtained for a range of insulated and un-insulated antennas with efficiencies as low as 0.06\%. Analysis showed that while measurement errors were dominated by positioning variability, spurious feed cable radiation is still a significant factor that must be considered. Depending on the radiation characteristics of the antenna under test and the feed cable routing within the phantom, cable radiation could lead to errors of up to 4.5 dB.",

keywords = "Cable effects, implant antenna, radiation efficiency, reverberation chamber, tissue equivalent phantom",

author = "Yomna El-Saboni and Magill, \{Matthew K.\} and Conway, \{Gareth A.\} and Cotton, \{Simon L.\} and Scanlon, \{William G.\}",

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year = "2017",

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doi = "10.1109/JERM.2017.2765638",

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AU - El-Saboni, Yomna

AU - Magill, Matthew K.

AU - Conway, Gareth A.

AU - Cotton, Simon L.

AU - Scanlon, William G.

PY - 2017/12

Y1 - 2017/12

N2 - We investigate the use of a reverberation chamber for the experimental measurement of deep implant antenna radiation efficiency. The technique was able to measure the extremely low efficiencies associated with deep implant antennas inside a muscle tissue-mimicking liquid phantom. Results were obtained for a range of insulated and un-insulated antennas with efficiencies as low as 0.06%. Analysis showed that while measurement errors were dominated by positioning variability, spurious feed cable radiation is still a significant factor that must be considered. Depending on the radiation characteristics of the antenna under test and the feed cable routing within the phantom, cable radiation could lead to errors of up to 4.5 dB.

AB - We investigate the use of a reverberation chamber for the experimental measurement of deep implant antenna radiation efficiency. The technique was able to measure the extremely low efficiencies associated with deep implant antennas inside a muscle tissue-mimicking liquid phantom. Results were obtained for a range of insulated and un-insulated antennas with efficiencies as low as 0.06%. Analysis showed that while measurement errors were dominated by positioning variability, spurious feed cable radiation is still a significant factor that must be considered. Depending on the radiation characteristics of the antenna under test and the feed cable routing within the phantom, cable radiation could lead to errors of up to 4.5 dB.

KW - Cable effects

KW - implant antenna

KW - radiation efficiency

KW - reverberation chamber

KW - tissue equivalent phantom

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ER -

Measurement of deep tissue implanted antenna efficiency using a reverberation chamber

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