A 60GHz 3-dB tandem coupler using offset broadside-coupled lines on a silicon substrate

IEICE Electronics Express

Kenichi Okada³  Yusuke Uemichi²  Hiroyuki Ito¹  Kazuya Masu¹  Hamid Kiumarsi¹  Noboru Ishihara¹  Yasuto Chiba² 

[1] Solutions Research Laboratory, Tokyo Institute of Technology;Electron Device Laboratory, Fujikura Ltd.;Department of Physical Electronics, Tokyo Institute of Technology

关键词: 60GHz band;    tandem coupler;    3-dB coupler;    broadside-coupled lines;    quadrature;    millimeter-wave passive devices;   

DOI  :  10.1587/elex.10.20120901

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(15)In this letter, a 60GHz tandem coupler using offset broadside-coupled lines is proposed on a silicon-based integrated passive device technology. Over the frequency band of 57-66GHz, the measured insertion loss, amplitude imbalance, input return loss, isolation and phase error of the designed tandem coupler are better than 0.67dB, 0.31dB, 27.9dB, 29.7dB and 3.7° respectively. To the best of our knowledge the proposed coupler achieves the lowest reported insertion loss and amplitude imbalance for a 3-dB coupler on a silicon substrate at 60GHz band. Furthermore using the even- and odd-mode analysis, the reason for a high directivity of edge-coupled lines and a low coupling level of broadside-coupled lines on the adopted technology is investigated and a solution for increasing the coupling level of broadside-coupled lines is proposed.

【 授权许可】

Unknown