標題: | Six-Pole Parallel-Coupled Microstrip CQ Filter with Source-Load and Source/Load to Resonator Cross Coupling |
作者: | Lin, Yun-Wei Lu, Jhe-Ching Chang, Chi-Yang Liao, Ching-Ku 電信工程研究所 Institute of Communications Engineering |
關鍵字: | Parallel-coupled;cross coupling;microstrip cascade quadruplet filter |
公開日期: | 2009 |
摘要: | The six-pole cascade quadruplet microstrip filter with source-load and source/load to nonadjacent resonator cross coupling is proposed to achieve generalized Chebyshev responses. The presented coupling scheme achieves similar skirt selectivity as that of a sixth-order fully canonical form filter. In addition, the proposed filter is less sensitive than that of canonical form filter. The initial design can be easily obtained by the design procedure of conventional parallel-coupled filter. With source to the third resonator and load to the fourth resonator cross couplings, two quadruplets are formed. Moreover, a source-load cross coupling forms the third quadruplet. The three quadruplets produce three pairs of finite transmission zeros. By controlling the strength of the cross couplings, the position of the three pairs of zeros can be decided arbitrarily. A design example is provided in this paper. Furthermore, simulation and measurement results are well matched. |
URI: | http://hdl.handle.net/11536/13679 |
ISBN: | 978-1-4244-2801-4 |
期刊: | APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE, VOLS 1-5 |
起始頁: | 171 |
結束頁: | 174 |
顯示於類別: | 會議論文 |