Comparing simulated results of folded and unfolded log-periodic antenna used for observing the Sun
Author:
Ша Ли1, Sha Li2, Йихуа Йан34, Yihua Yan56, Чжицзюнь Чень1, Zhijun Chen2, Вэй Ван1, Wei Wang2
Affiliation:
1. Национальные астрономические обсерватории Китая 2. National Astronomical Observatories of Chinese Academy of Sciences 3. Главная лаборатория исследования солнечной активности, Национальные астрономические обсерватории, Академия наук КНР 4. Университет Китайской академии наук 5. Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences 6. University of Chinese Academy of Sciences
Abstract
There are two antenna arrays located in Mingantu Spectral Radio Heliograph (MUSER). MUSER-I and MUSER-II cover the frequency band ranging from 0.4 to 2 GHz and from 2 to 15 GHz respectively. A third antenna array covering 30–240 MHz will be established in the coming years. A log-periodic antenna is one of the choices for MUSER low frequency band; it radiates structures capable of maintaining consistent impedance characteristics over a wide bandwidth. Due to the ability of achieving high gain, it is widely used in many broadband applications. In this program, folded and unfolded log-periodic antennas are simulated for the Meridian project. In order to improve its return loss, this antenna is optimized with the width of each pole and the height of the substrate. This optimized process has been implemented in the simulated software HFSS.
Publisher
Infra-M Academic Publishing House
Subject
Space and Planetary Science,Atmospheric Science,Geophysics
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