標題: | A new class of wideband multisection 180 degrees hybrid rings using vertically installed planar couplers |
作者: | Chi, CH Chang, CY 電信工程研究所 Institute of Communications Engineering |
關鍵字: | multisection 180 degrees hybrid ring;phase inverter;vertically installed planar (VIP) coupler;wideband 180 degrees hybrid ring |
公開日期: | 1-六月-2006 |
摘要: | A new class of wideband multisection 180 degrees hybrid rings using the vertically installed planar (VIP) coupler is proposed. On the basis of the reconfigured ideal single-section 180 degrees hybrid ring (i.e., the 180 degrees hybrid ring with an ideal phase inverter), the multisection 180 degrees hybrid rings can be realized by properly cascading of single-section 180 degrees hybrid rings. Compared with the conventional hybrid ring, the two-section hybrid rings exhibit wide bandwidth, size reduction, and easily achievable high power-division ratios. Design equations based on the equal-ripple functions are derived. Design curves for the equal and unequal power-division ratio are also described. In addition, a cascade of single-section cascadable hybrid rings with a unit element at each I/O port can be used for bandwidth enhancement. Good agreement is obtained between the experimental and simulated results. |
URI: | http://dx.doi.org/10.1109/TMTT.2006.875799 http://hdl.handle.net/11536/12180 |
ISSN: | 0018-9480 |
DOI: | 10.1109/TMTT.2006.875799 |
期刊: | IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES |
Volume: | 54 |
Issue: | 6 |
起始頁: | 2478 |
結束頁: | 2486 |
顯示於類別: | 期刊論文 |