Application of the modified Wheeler cap method for radiation efficiency measurement of balanced electrically small antennas in complex environment

Jiaying Zhang; Sergey Pivnenko; Olav Breinbjerg

Application of the modified Wheeler cap method for radiation efficiency measurement of balanced electrically small antennas in complex environment

Jiaying Zhang
, Sergey Pivnenko
, Olav Breinbjerg

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

In this paper, application of a modified Wheeler cap method for the radiation efficiency measurement of balanced electrically small antennas is presented. It is shown that the limitations on the cavity dimension can be overcome and thus measurement in a large cavity is possible. The cavity loss is investigated, and a modified radiation efficiency formula that includes the cavity loss is introduced. Moreover, a modification of the technique is proposed that involves the antenna working complex environment inside the Wheeler Cap and thus makes possible measurement of an antenna close to a hand or head phantom. The measurement procedures are described and the key features of the technique are discussed. The results of simulations and measurements by the proposed method are presented and compared.

Original language	English
Title of host publication	Proceedings of AMTA 2010
Publication date	2010
Publication status	Published - 2010
Event	32nd Annual Meeting & Symposium of Antenna Measurement Techniques Association - Atlanta, United States Duration: 10 Oct 2010 → 15 Oct 2010 Conference number: 32

Conference

Conference	32nd Annual Meeting & Symposium of Antenna Measurement Techniques Association
Number	32
Country/Territory	United States
City	Atlanta
Period	10/10/2010 → 15/10/2010

Keywords

Wheeler Cap Method
Radiation Efficiency Measurement
Balanced Antennas
Antenna-on-Body Measurements
Electrically Small Antennas

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title = "Application of the modified Wheeler cap method for radiation efficiency measurement of balanced electrically small antennas in complex environment",

abstract = "In this paper, application of a modified Wheeler cap method for the radiation efficiency measurement of balanced electrically small antennas is presented. It is shown that the limitations on the cavity dimension can be overcome and thus measurement in a large cavity is possible. The cavity loss is investigated, and a modified radiation efficiency formula that includes the cavity loss is introduced. Moreover, a modification of the technique is proposed that involves the antenna working complex environment inside the Wheeler Cap and thus makes possible measurement of an antenna close to a hand or head phantom. The measurement procedures are described and the key features of the technique are discussed. The results of simulations and measurements by the proposed method are presented and compared.",

keywords = "Wheeler Cap Method, Radiation Efficiency Measurement, Balanced Antennas, Antenna-on-Body Measurements, Electrically Small Antennas",

author = "Jiaying Zhang and Sergey Pivnenko and Olav Breinbjerg",

year = "2010",

language = "English",

booktitle = "Proceedings of AMTA 2010",

note = "32nd Annual Meeting \& Symposium of Antenna Measurement Techniques Association, AMTA 2010 ; Conference date: 10-10-2010 Through 15-10-2010",

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TY - GEN

T1 - Application of the modified Wheeler cap method for radiation efficiency measurement of balanced electrically small antennas in complex environment

AU - Zhang, Jiaying

AU - Pivnenko, Sergey

AU - Breinbjerg, Olav

N1 - Conference code: 32

PY - 2010

Y1 - 2010

N2 - In this paper, application of a modified Wheeler cap method for the radiation efficiency measurement of balanced electrically small antennas is presented. It is shown that the limitations on the cavity dimension can be overcome and thus measurement in a large cavity is possible. The cavity loss is investigated, and a modified radiation efficiency formula that includes the cavity loss is introduced. Moreover, a modification of the technique is proposed that involves the antenna working complex environment inside the Wheeler Cap and thus makes possible measurement of an antenna close to a hand or head phantom. The measurement procedures are described and the key features of the technique are discussed. The results of simulations and measurements by the proposed method are presented and compared.

AB - In this paper, application of a modified Wheeler cap method for the radiation efficiency measurement of balanced electrically small antennas is presented. It is shown that the limitations on the cavity dimension can be overcome and thus measurement in a large cavity is possible. The cavity loss is investigated, and a modified radiation efficiency formula that includes the cavity loss is introduced. Moreover, a modification of the technique is proposed that involves the antenna working complex environment inside the Wheeler Cap and thus makes possible measurement of an antenna close to a hand or head phantom. The measurement procedures are described and the key features of the technique are discussed. The results of simulations and measurements by the proposed method are presented and compared.

KW - Wheeler Cap Method

KW - Radiation Efficiency Measurement

KW - Balanced Antennas

KW - Antenna-on-Body Measurements

KW - Electrically Small Antennas

M3 - Article in proceedings

BT - Proceedings of AMTA 2010

T2 - 32nd Annual Meeting & Symposium of Antenna Measurement Techniques Association

Y2 - 10 October 2010 through 15 October 2010

ER -

Application of the modified Wheeler cap method for radiation efficiency measurement of balanced electrically small antennas in complex environment

Abstract

Conference

Keywords

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