The Institute of Electronics, Information and Communication Engineers (IEICE);The Institute of Electronics, Information and Communication Engineers
摘要:
摘要： All-pass phase shifters using ferroelectric varactors are designed, fabricated, and measured. The design equations for the all-pass phase shifter are presented. The fabrication process of the ferroelectric varactors is described. Measurement results of single-stage all-pass phase shifters show that phase shift greater than 85° can be achieved under 10-V bias. At the frequency where maximum phase shift occurs, the insertion loss is less than 2dB and the return loss is greater than 12dB. Simulations based on the measured S parameters of the single-stage phase shifters show that, by cascading four stages of individually biased single-stage phase shifters, maximum phase shift of 180° can be achieved with a phase error as low as ±3° between 2.1GHz and 3.25GHz, corresponding to a 43% bandwidth. 其他題名： IEICE Electron. Express 出版者： The Institute of Electronics, Information and Communication Engineers 出版日期： 2013-01-01 出處： IEICE Electronics Express, 2013/08/10, Vol.10(15), pp.20130491-20130491 版權： 2013 by The Institute of Electronics, Information and Communication Engineers 識別號： ISSN: 1349-2543 識別號： ISSN: 1349-9467 識別號： EISSN: 1349-2543 識別號： EISSN: 1349-9467 識別號： DOI: 10.1587/elex.10.20130491
