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Observation method of left and right circularly polarized solar radio signals using MUSER
Received date: 2015-06-15
Revised date: 2016-01-07
Online published: 2016-07-15
The 3 dB couplers of MUSER-I and MUSER-II are simulated using Microwave office software.Because of the ultra wide frequency band, multiple single couplers are used to synthesis one symmetrical coupler.The amplitude of MUSER-I 3 dB hybrid is (-3±0.2) dB, and the phase difference of this port is between 91.9° and 89°.For MUSER-II 3 dB hybrid, the voltage standing wave ratio is less than 1.31 and the phase difference is between 96.05° and 85°.This radioheliograph receives left and right circularly polarized radio signals.The difference between the polarization degree of the Sun and the observed polarization degree is also measured, and the error is 9.4% when the original polarization degree is 10%.
Key words： ultra wide band; VSWR; degree of coupling; degree of polarization
LI Sha , WANG Wei , LIU Donghao , YAN Yihua , CHEN Zhijun . Observation method of left and right circularly polarized solar radio signals using MUSER[J]. Journal of University of Chinese Academy of Sciences, 2016 , 33(4) : 477 -483 . DOI: 10.7523/j.issn.2095-6134.2016.04.007
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