Impedance measurement of properly excited small balanced antennas

authored by: Eddy Brice Kaldjob, Bernd Geck, Hermann Eul
Abstract: This paper presents a new method for measuring the input impedance of properly fed small balanced antennas using a conventional vector network analyzer. The measurement setup includes a balun which allows driving the balanced antenna properly. This measurement method allows analysis of proximity effects on the input return loss of balanced antennas. For this purpose, a formula to extract the antenna impedance by measuring the reflection coefficient at the balun input is developed. To verify the proposed method, a balanced antenna with known simulated differential impedance has been measured and compared with the simulation results. The achieved good agreement validates the developed formula and thus the new measurement procedure.
Organisation(s): Institute of Microwave and Wireless Systems
Type: Article
Journal: IEEE Antennas and Wireless Propagation Letters
Volume: 8
Pages: 193-195
No. of pages: 3
ISSN: 1536-1225
Publication date: 2009
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Electrical and Electronic Engineering
Electronic version(s): https://doi.org/10.1109/LAWP.2008.2005533 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{8f7ddf2fdcba4acfa57c584a047fd99c,
title = "Impedance measurement of properly excited small balanced antennas",
abstract = "This paper presents a new method for measuring the input impedance of properly fed small balanced antennas using a conventional vector network analyzer. The measurement setup includes a balun which allows driving the balanced antenna properly. This measurement method allows analysis of proximity effects on the input return loss of balanced antennas. For this purpose, a formula to extract the antenna impedance by measuring the reflection coefficient at the balun input is developed. To verify the proposed method, a balanced antenna with known simulated differential impedance has been measured and compared with the simulation results. The achieved good agreement validates the developed formula and thus the new measurement procedure.",
keywords = "Antenna feeds, Baluns, Impedance measurement, Scattering parameters measurement",
author = "Kaldjob, {Eddy Brice} and Bernd Geck and Hermann Eul",
note = "Funding Information: Manuscript received July 25, 2008. First published September 09, 2008; current version published April 22, 2009. This work was supported by the German Research Foundation in the framework of the Collaborative Research Centre 653.",
year = "2009",
doi = "10.1109/LAWP.2008.2005533",
language = "English",
volume = "8",
pages = "193--195",
journal = "IEEE Antennas and Wireless Propagation Letters",
issn = "1536-1225",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
}