Abstract
In order to achieve high accuracy in measurements of the multiple probe antenna measurement system (MPAMS), an omnidirectional calibration antenna with a small gain variation in the horizontal polarization (named calibration loop antenna, in convention) is required. This article presents such an antenna design. The proposed calibration loop antenna consists of four arc-folded dipoles with dimensions of 52 mm x52 mm x 1 mm, balun structures for suppressing common mode current, and four parasitic strips for impedance matching on each of the top and bottom planes. The experimental results show that the proposed calibration loop antenna has a small gain variation in the horizontal polarization less than 0.16 dB in a bandwidth of 20% (2.25-2.75 GHz), and its 10-dB return loss bandwidth is 18.2%. Also, the cross-polarization ratio in the operating bandwidth is greater than 24 dB. Along with the desired omnidirectional radiation pattern, the low profile and compact design further make the proposed calibration loop antenna a suitable selection for calibration in MPAMS.
Recommended Citation
Y. Zheng et al., "Calibration Loop Antenna for Multiple Probe Antenna Measurement System," IEEE Transactions on Instrumentation and Measurement, vol. 69, no. 8, pp. 5745 - 5754, article no. 8948012, Institute of Electrical and Electronics Engineers, Aug 2020.
The definitive version is available at https://doi.org/10.1109/TIM.2019.2963507
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Balun; calibration antenna (CA); calibration loop antenna; common mode current suppression; gain ripple; horizontally polarized (HP); multiple probe antennas measurement system (MPAMS)
International Standard Serial Number (ISSN)
1557-9662; 0018-9456
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Aug 2020
