Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 6a9c145432807fdbab85d377 10.12737/stp-52201907 14th China-Russia Space Weather Workshop. November 5–9, 2018, Haikou, China 14th China-Russia Space Weather Workshop. November 5–9, 2018, Haikou, China 14th China-Russia Space Weather Workshop. November 5–9, 2018, Haikou, China Comparing simulated results of folded and unfolded log-periodic antenna used for observing the Sun Comparing simulated results of folded and unfolded log-periodic antenna used for observing the Sun Ша Ли Sha Li lisha1400@bao.ac.cn Ихуа Янь Yihua Yan Чжицзюнь Чень Zhijun Chen zjchen@bao.ac.cn Вэй Ван Wei Wang wwang@nao.cas.cn Национальные астрономические обсерватории Китая Пекин Китайская Народная Республика National Astronomical Observatories of Chinese Academy of Sciences Beijing China Главная лаборатория исследования солнечной активности, Национальные астрономические обсерватории, Академия наук КНР Пекин Китайская Народная Республика Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences Beijing China Университет Китайской академии наук Пекин Китайская Народная Республика University of Chinese Academy of Sciences Beijing China Национальные астрономические обсерватории Китая Пекин Китайская Народная Республика National Astronomical Observatories of Chinese Academy of Sciences Beijing China Национальные астрономические обсерватории Китая Пекин Китайская Народная Республика National Astronomical Observatories of Chinese Academy of Sciences Beijing China 5 2 45 49 © Ша Л., Ихуа Я., Чжицзюнь Ч., Вэй В. © Sha L., Yihua Y., Zhijun C., Wei W. Ша Ли, Ихуа Янь, Чжицзюнь Чень, Вэй Ван Sha Li, Yihua Yan, Zhijun Chen, Wei Wang https://zh-szf.ru/en/nauka/publications/6a9c145432807fdbab85d377/view

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.

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.

 array feed log-periodic antenna array feed log-periodic antenna

Chen Z.N, Chia Y.W.M. Broadband monopole antenna with parasitic planar element. Microwave and Optical Technology Lett. 2000, vol. 27, iss. 3, pp. 209-210. DOI: 10.1002/1098-2760(20001105)27:3%3C209::AID-MOP19% 3E3.0.CO;2-5. Chen Z.N, Chia Y.W.M. Broadband monopole antenna with parasitic planar element. Microwave and Optical Technology Lett. 2000, vol. 27, iss. 3, pp. 209-210. DOI: 10.1002/1098-2760(20001105)27:3%3C209::AID-MOP19% 3E3.0.CO;2-5. Lai J.Y., Hsu C.W., Li K.W., et al. A wideband CPW-fed monopole antenna with linear and circular polarizations. Proc. IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. 2017, pp. 327-328. Lai J.Y., Hsu C.W., Li K.W., et al. A wideband CPW-fed monopole antenna with linear and circular polarizations. Proc. IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. 2017, pp. 327-328. Lesovoi S.V., Altyntsev A.T., Ivanov E.F., Gubin A.V. A 96-antenna radioheliograph. Res. in Astron. and Astrophys. 2014, vol. 14, iss. 7, pp. 864-868. DOI: 10.1088/1674-4527/14/7/008. Lesovoi S.V., Altyntsev A.T., Ivanov E.F., Gubin A.V. A 96-antenna radioheliograph. Res. in Astron. and Astrophys. 2014, vol. 14, iss. 7, pp. 864-868. DOI: 10.1088/1674-4527/14/7/008. Li S., Yan Y., Chen Z., Wang W., Zhang F. Design of dual circularly polarized 2-15 GHz feed and the polarization degree measurement for CSRH-II antenna system. Publ. of the Astron. Soc. of Australia (PASA). 2015a, vol. 32, e013, pp. 1-7. DOI: 10.1017/pasa.2015.14. Li S., Yan Y., Chen Z., Wang W., Zhang F. Design of dual circularly polarized 2-15 GHz feed and the polarization degree measurement for CSRH-II antenna system. Publ. of the Astron. Soc. of Australia (PASA). 2015a, vol. 32, e013, pp. 1-7. DOI: 10.1017/pasa.2015.14. Li S., Yan Y.-H., Chen Z.-J., Wang W., Liu D.-H.. Antenna system characteristics and solar radio burst observations. Res. in Astron. and Astrophys. 2015b, vol. 15, no. 11, pp. 1917-1930. DOI: 10.1088/1674-4527/15/11/013. Li S., Yan Y.-H., Chen Z.-J., Wang W., Liu D.-H.. Antenna system characteristics and solar radio burst observations. Res. in Astron. and Astrophys. 2015b, vol. 15, no. 11, pp. 1917-1930. DOI: 10.1088/1674-4527/15/11/013. Li S.， Yihua Y.， Zhijun C.， Wang W. A new impedance matching method for an ultra-wide band and dual circularly polarised feed. Publ. of the Astron. Soc. of Australia (PASA). 2016，vol. 33, e061, pp. 2-8. DOI: 10.1017/pasa.2016.51. Li S.， Yihua Y.， Zhijun C.， Wang W. A new impedance matching method for an ultra-wide band and dual circularly polarised feed. Publ. of the Astron. Soc. of Australia (PASA). 2016，vol. 33, e061, pp. 2-8. DOI: 10.1017/pasa.2016.51. Wang J., An K., Liu Y. Analysis of electrical characteristics of LPDA and HFSS simulation design. Proc. 4th IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications. 2011. DOI: 10.1109/MAPE.2011.6156145. Wang J., An K., Liu Y. Analysis of electrical characteristics of LPDA and HFSS simulation design. Proc. 4th IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications. 2011. DOI: 10.1109/MAPE.2011.6156145. Zhengguang Y., Donglin S., Shanwei L. A size-reduced log periodic dipole antenna. J. of Electronics. 2006, vol. 23, no. 6, pp. 913-914. DOI: 10.1007/s11767-005-0048-3. Zhengguang Y., Donglin S., Shanwei L. A size-reduced log periodic dipole antenna. J. of Electronics. 2006, vol. 23, no. 6, pp. 913-914. DOI: 10.1007/s11767-005-0048-3.