Near-field time-domain characterisation of wideband antennas

Mobashsher, A.T. and Abbosh, A.M. (2015) Near-field time-domain characterisation of wideband antennas. Electronics Letters, 51 25: 2076-2078. doi:10.1049/el.2015.2763


Author Mobashsher, A.T.
Abbosh, A.M.
Title Near-field time-domain characterisation of wideband antennas
Journal name Electronics Letters   Check publisher's open access policy
ISSN 0013-5194
1350-911X
Publication date 2015-12-10
Year available 2015
Sub-type Article (original research)
DOI 10.1049/el.2015.2763
Open Access Status Not yet assessed
Volume 51
Issue 25
Start page 2076
End page 2078
Total pages 3
Place of publication Stevenage, Herts, United Kingdom
Publisher The Institution of Engineering and Technology
Collection year 2016
Language eng
Abstract Time-domain characterisation is vital in verifying the suitability of wideband antennas for near-field applications such as microwave medical imaging and sensing. To that end, a near-field time-domain characterisation method to calculate the near-field transient response and the distortion of wideband antennas is proposed. The method uses a pulse merit factor, which consists of the near-field timedomain signal amplitude and a fidelity factor, both normalised to the highest values attained from the antennas. To verify the method, the transient responses of unidirectional and omnidirectional antennas designed for near-field imaging are analysed. The analyses show that even though the investigated antennas cover the same band with the same average far-field gain along the boresight direction, the unidirectional antenna exhibits 35% more pulse merit factor with less impulse distortion along the intended direction, which suggests better suitability for wideband near-field imaging systems.
Q-Index Code CX
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Information Technology and Electrical Engineering Publications
 
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