| 摘要: |
| 为了既满足实现双谐振的零度馈电结构，又能实现阻抗匹配，采用双点双线馈电技
术和具有开口环、阶跃阻抗谐振双重特性的结构设计双通带滤波器。版图仿真结果表明：两
个谐振频率分别为2.7 GHz和5.05 GHz，符合射频电子标签所需的两路信号，其对
应的回波损耗分别为-38 dB和-49 dB，插入损耗为-0.2 dB和-0.4 dB，从
而实现了低损耗特性和尖锐的选择性。 |
| 关键词: 微带带通滤波器 双点双线馈电 阶跃阻抗谐振器 开口环 双通带 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目(61075030) |
|
| Design of a low loss microstrip bandpass filter with double resonance |
| LI Yong,ZOU Chuan-yun |
| () |
| Abstract: |
| In order to realize impedance matching and meet the zero feed structur
e which realizes double resonance,double point dual feed technology and dou
ble characteristic structure of split ring and SIR are adopted to design a doubl
e bandpass filter. The simulation results show that two resonant frequencies are 2.7 GHz a
nd 5.05 GHz, which correspond directly with the two channels signal of radio
frequency electronic label. The corresponding echo losses are -38 dB and
-49 dB, and the insert losses are -0.2 dB and -0.4 dB, thereby to realiz
e the low loss characteristics and sharp selectivity. |
| Key words: microstrip bandpass filter double point dual feed step impedance resonator split ring double bandpass |
