<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The paper present a study of frequency shift of the reflection coefficient minimal absolute value dependence on antenna spacing in linear and circular arrays. The spacing of CB-band monopole antenna was in the range of 0.015 to 0.12 multiples of the antenna working wavelength. Number of elements in the antenna arrays ranged from two to four. Frequency dependence of minimal absolute value of the reflection coefficient was obtained by simulations and also experimentally confirmed in anechoic chamber. The research showed two facts. First, mutual impedance has the higher impact when antenna spacing is comparable with the reactive near field region. Second, circular antenna arrays are a better choice in applications for a small number of antennas with that spacing.</p></abstract>

The paper present a study of frequency shift of the reflection coefficient minimal absolute value dependence on antenna spacing in linear and circular arrays. The spacing of CB-band monopole antenna was in the range of 0.015 to 0.12 multiples of the antenna working wavelength. Number of elements in the antenna arrays ranged from two to four. Frequency dependence of minimal absolute value of the reflection coefficient was obtained by simulations and also experimentally confirmed in anechoic chamber. The research showed two facts. First, mutual impedance has the higher impact when antenna spacing is comparable with the reactive near field region. Second, circular antenna arrays are a better choice in applications for a small number of antennas with that spacing.

Frequency shift of the minimal magnitude of reflection coefficient in antenna array

Slovak University of Technology in Bratislava

Faculty of Electrical Engineering and Information Technology

Journal of Electrical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The paper present a study of frequency shift of the reflection coefficient minimal absolute value dependence on antenna spacing in linear and circular arrays....

Frequency shift of the minimal magnitude of reflection coefficient in antenna array

Published Online: Mar 02, 2019

Page range: 64 - 68

Received: Dec 13, 2018

DOI: https://doi.org/10.2478/jee-2019-0009

Keywords
antenna array, reflection coefficient, mutual impedance

© 2019 Ferdinand Vavrík et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Frequency shift of the minimal magnitude of reflection coefficient in antenna array

Published Online: Mar 02, 2019

Page range: 64 - 68

Received: Dec 13, 2018

DOI: https://doi.org/10.2478/jee-2019-0009

Keywordsantenna array, reflection coefficient, mutual impedance

© 2019 Ferdinand Vavrík et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
antenna array, reflection coefficient, mutual impedance