Two-port model of an antenna for use in characterizing wireless communications systems, obtained using efficiency measurements

Author

Rogers, Shawn D. ; Aberle, James T. ; Auckland, David T.

Author_Institution

Etenna Corp., Laurel, MD, USA

Volume

45

Issue

3

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

115

Lastpage

118

Abstract

The agreement in these efficiency measurements validates the accuracy of the Satimo range, while highlighting the simplicity of the Wheeler cap. When one needs pattern data or the efficiency of an antenna in the presence of a surrogate hand and head, then a spherical near-field range, such as the Satimo system, is necessary. However, it is seen that a network analyzer and a Wheeler cap are sufficient for accurately measuring total antenna efficiency versus frequency for a small, solitary antenna. This total efficiency is the transfer function of the antenna, and may be used by system designers to evaluate the antenna´s bandpass and band-reject properties.

Keywords

antenna testing; mobile antennas; network analysers; transfer functions; Satimo range; Wheeler cap; band-reject properties; bandpass properties; efficiency; efficiency measurements; network analyzer; pattern data; solitary antenna; spherical near-field range; total antenna efficiency; transfer function; two-port model; wireless communications systems; Antenna measurements; Antennas and propagation; Gain measurement; Impedance; Receiving antennas; Reflector antennas; Transfer functions; Transmitters; Transmitting antennas; Wireless communication;

fLanguage

English

Journal_Title

Antennas and Propagation Magazine, IEEE

Publisher

ieee

ISSN

1045-9243

Type

jour

DOI

10.1109/MAP.2003.1232166

Filename

1232166