摘要
Two-stage bandpass filters with a sharp transition band are presented. The two stages are cascaded by a direct coupling scheme, as well as a three-line structure. Each half-wave resonator Is tapped with a quarter-wave open stub at its center and a transmission zero can be created. The positions of the two zeros can be easily tuned to locate close to the passband, so that an elliptic function-like response can be obtained. Both uniform impedance resonators (UIRs) and stepped impedance resonators (SIRs) are employed in the design. Experimental results show a close agreement with the design.
| 原文 | 英語 |
|---|---|
| 頁(從 - 到) | 1609-1612 |
| 頁數 | 4 |
| 期刊 | IEEE MTT-S International Microwave Symposium Digest |
| 卷 | 3 |
| 出版狀態 | 已出版 - 2004 |
| 對外發佈 | 是 |
| 事件 | 2004 IEEE MITT-S International Microwave Symposium Digest - Fort Worth, TX, 美國 持續時間: 06 06 2004 → 11 06 2004 |
指紋
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