新型宽带GCPW射频传输转换

本文提出了一种新型宽带GCPW(Grounded Coplanar Waveguide,地面共面波导)射频传输转换结构,用于解决两个不同平面背靠背式的GCPW射频传输转换。首先将GCPW转换为CPW,宽带共面波导的传输转换是通过金带连接的方式实现传输平面的转换。在工作频率为2GHz—17.5GHz,带宽为15.5GHz的条件下,这种传输转换形式实现了传输损耗小于0.5d B,回波损耗大于16.7d B。这种传输方式较好的解决了较大间距背靠背式GCPW射频信号的传输转换,而且过渡结构简单,尺寸小,工程上容易实现。

New Broadband GCPW-to-CPW Transition

A new broadband ground coplanar waveguide (GCPW) transition is proposed for three dimensional back-to-back transition of GCPW. Firstly, we need to research GCPW-to-CPW transition and then using gold belt bonding to realize the transition of three dimensions CPW. As design examples, the fabricated transitions in back-to-back configuration provide insertion loss less than 0.5 dB per transition and return loss better than 16.7 dB for frequencies form 2 GHz to over 17.5 GHz. This method effectively solved the problem of back-to-back GCPW transition and has the advantages of simple structure, small size and easy to realize in project.