A wideband bandpass filter with wide upper stopband attenuation containing multiple resonators

被引：1
|
作者：
Bai, Lei [1 ]
Zhuang, Yi-qi [1 ]
Zeng, Zhi-bin [1 ]
机构：
[1] Xidian Univ, Sch Microelect, Xian 710071, Peoples R China
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2023年 / 65卷 / 10期
关键词：
bandpass filter; funnel-shaped resonator; rectangular-ring resonator; stopband; tri-section stepped impedance resonators (TSSIR);
D O I：
10.1002/mop.33785
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A compact wideband bandpass filter with a wide passband and very-wide out-of-band suppression is presented. The filter is constructed from a central rectangular-ring resonator with two open stubs placed around it symmetrically. In addition, tri-section stepped-impedance resonators are symmetrically distributed on both sides of the two open stubs, and two symmetrical funnel-shaped resonators are included to enhance out-of-band suppression. The out-of-band performance of filter is very good, with a suppression level greater than 20 dB up to 25.72 GHz. The center frequency of the filter is 5.84 GHz, with a fractional bandwidth of 115.8%. Good agreement between the simulations and measurements validates the design principle.
引用
收藏
页码：2741 / 2747
页数：7
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