A novel indirect method to determine the radiation impedance of a handheld antenna structure

Myles H. Capstick; Jari O. Jekkonen; Andrew (Andy) C. Marvin; Ian David Flintoft; Linda Dawson

doi:10.1109/TIM.2008.2005263

A novel indirect method to determine the radiation impedance of a handheld antenna structure

Myles H. Capstick, Jari O. Jekkonen, Andrew (Andy) C. Marvin, Ian David Flintoft, Linda Dawson

Electronic Engineering

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

Abstract

A novel indirect measurement technique is developed in which the input impedance of an unknown antenna structure is determined by measuring the change in the measured input impedance of a second probe antenna, while the unknown antenna is loaded at its input by a set of known impedances. The feasibility of the approach is explored using method-of-moment boundary element simulations of the interaction between two dipole antennas in free space. Examples of the measurement of the helical antenna of a terrestrial trunked radio (TETRA) handheld radio and a small portable device with an electrically small antenna are presented. The significant advantage of the technique in the accurate measurement of electrically small antennas is confirmed.

Original language	English
Pages (from-to)	578-585
Number of pages	8
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	58
Issue number	3
DOIs	https://doi.org/10.1109/TIM.2008.2005263
Publication status	Published - Mar 2009

Keywords

Antenna measurements
antenna radiation impedance
impedance matching
indirect measurement
scattering parameters

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10.1109/TIM.2008.2005263

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4633675

Cite this

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title = "A novel indirect method to determine the radiation impedance of a handheld antenna structure",

abstract = "A novel indirect measurement technique is developed in which the input impedance of an unknown antenna structure is determined by measuring the change in the measured input impedance of a second probe antenna, while the unknown antenna is loaded at its input by a set of known impedances. The feasibility of the approach is explored using method-of-moment boundary element simulations of the interaction between two dipole antennas in free space. Examples of the measurement of the helical antenna of a terrestrial trunked radio (TETRA) handheld radio and a small portable device with an electrically small antenna are presented. The significant advantage of the technique in the accurate measurement of electrically small antennas is confirmed.",

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AU - Jekkonen, Jari O.

AU - Marvin, Andrew (Andy) C.

AU - Flintoft, Ian David

AU - Dawson, Linda

PY - 2009/3

Y1 - 2009/3

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AB - A novel indirect measurement technique is developed in which the input impedance of an unknown antenna structure is determined by measuring the change in the measured input impedance of a second probe antenna, while the unknown antenna is loaded at its input by a set of known impedances. The feasibility of the approach is explored using method-of-moment boundary element simulations of the interaction between two dipole antennas in free space. Examples of the measurement of the helical antenna of a terrestrial trunked radio (TETRA) handheld radio and a small portable device with an electrically small antenna are presented. The significant advantage of the technique in the accurate measurement of electrically small antennas is confirmed.

KW - Antenna measurements

KW - antenna radiation impedance

KW - impedance matching

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KW - scattering parameters

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A novel indirect method to determine the radiation impedance of a handheld antenna structure

Abstract

Keywords

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Other files and links

Antennas, Electromagnetic test cells, and metrology

Cite this

A novel indirect method to determine the radiation impedance of a handheld antenna structure

Abstract

Keywords

Access to Document

Other files and links

Projects

Antennas, Electromagnetic test cells, and metrology

Cite this