Clover Polarimetric Detector —A Novel Design of an Ortho-mode Transducer at 150 and 225 GHz

摘要：

This paper presents the design of an ortho-mode transducer (OMT) to separate two orthogonal linearly polarized signals traveling in a circular waveguide with frequency channels at 150/255 GHz band. Simulations (in HFSS) are presented to determine the optimal probe geometry and feed impedance to achieve good coupling to the optimized probes over a wide bandwidth with corresponding feed impedances for telescopes operating at 150 and 225 GHz. The results show that at 150 GHz band, the return loss can reach below -20 dB from 126 GHz to 180 GHz with the cross polarization reach below -40 dB. At 225 GHz band, the return loss can reach below -20 dB from 190 GHz to 260 GHz with the polarization isolation more than 32 dB.

作者: Philip Mauskopf Peter Ade Stafford Withington Jin Zhang Paul Grime

作者单位: Astronomy Instrumentation Group,Cardiff University,UK Cavendish Laboratory,University of Cambridge,UK Experimental Radio Cosmology Group,Oxford University,UK

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)

会议地点: 杭州

会议语种:英文

页码: 1-4

在线出版日期: 2008-03-24（万方平台首次上网日期，不代表论文的发表时间）