DC-coupled directional bridge front-end for vector network analyzer receiver in GHz-range

IEICE Electronics Express

Johan Bauwelinck¹  Guus Colman¹  Jan Vandewege¹ 

[1] Department of Information Technology, Ghent University Sint-Pietersnieuwstraat

关键词: directional;    bridge;    isolation;    reflection;    network analyzer;   

DOI  :  10.1587/elex.8.814

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)Most of the commercially available vector network analyzers have a high pass cut-off frequency in the higher kHz-range. One of the main reasons is the frequency limitation of the directional device used. In this paper, a simple directional bridge circuit with incorporated frequency conversion stage is presented. This DC-coupled circuit enables vector network analyzer receiver front-ends to work near DC, expanding the frequency range by several decades. The directivity is similar to these of directional bridges used in commercially available analyzers, but this in a frequency range down to DC.

【 授权许可】

Unknown