Research on HF antenna blockage effects and their alleviation

Abstract

In this paper, blockage effects on high-frequency antennas are studied and their influence on the voltage standing wave ratio, gain, and radiation patterns is analysed. By simulating different blockage effects, the relationship between the antenna and the size of the blockage is clarified. It finds that radiation patterns are usually affected more seriously than other coefficients. The impact on the pattern is greater if the size or height of the blockage is larger than half of the wavelength. Two methods relating to the modification of the angle and height of the antenna are proposed that can reduce the influence of blockage effects. These are verified using a simulation and one is further demonstrated using a practical application.

KEYWORDS:

• Antenna blockage
• directional antenna
• HF antenna
• radiation angle
• pattern

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No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Notes on contributors

Wenjun Zhu

Wenjun Zhu received the MS degree in electromagnetic field and microwave technology from China Academic of Electronics and Information Technology. Now he is working for the PhD in Xidian University, Xi’an, China. From 2003 to 2021, he was a research and develop engineer in China research institute of radio wave and propagation (CRIRP). His research interests include electromagnetic wave propagation and array antenna design, antenna miniaturization, high power antenna design, phase control array design and optimization, high-frequency antenna design, and application.

Lixin Guo

Lixin Guo (S’95–M’03–SM’16) received the MS degree in Radio Science from Xidian University, Xi’an, China, and the PhD degree in Astrometry and Celestial Mechanics from Chinese Academy of Sciences, China, in 1993 and 1999, respectively. From 2001 to 2002, he was a Visiting Scholar at the School of Electrical Engineering and Computer Science, Kyungpook National University, Daegu, Korea. He has also been a Visiting Professor at d’Energetique des Systemes et Precedes (LESP), University of Rouen, Mont-Saint-Aignan, France, and Faculty of Engineering and Physical Sciences, University of Manchester, Manchester, UK. He is currently a Professor and Head of the School of Physics and Optoelectronic Engineering, Xidian University, China. He was the recipient of the National Science Fund for Distinguished Young Scholars in 2012, and a Distinguished Professor of Changjiang Scholars Program in 2015. He has been a Chief Professor of Innovative Research Team, Ministry of Science and Technology, China, since 2018. He has authored and coauthored 6 books and over 300 journal papers. He has been in charge of and undertaken more than 30 projects. His research interests include electromagnetic wave propagation and scattering in complex and random media, computational electromagnetics, inverse scattering, antenna analysis, and design. He was a Fellow of the Chinese Institute of Electronics (CIE) and Vice President of the Physics Institute of Shaanxi Province, China.