全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

新型的平面双模椭圆函数带通滤波器

Keywords: 贴片谐振器双模滤波器辐射损耗衰减极点

Full-Text   Cite this paper   Add to My Lib

Abstract:

根据传统的方形贴片双模滤波器,提出了一种新颖的带有两个切角的平面双模带通滤波器结构.该结构使用单个贴片谐振器并且没有耦合缝隙,通带两端各有一个衰减极点,有效减小了滤波器的辐射损耗.对该滤波器结构进行改进,又提出了一种带有两个相互正交、长度不等槽线的双模椭圆函数带通滤波器结构.该滤波器在中心频率1.8GHz处,回波损耗达到31.53dB,通带内最小插损达到0.01dB,3dB相对带宽为19.44%.采用Ansoff公司的Ensemble8.0仿真软件进行的仿真研究.仿真结果表明该结构可以更加有效地减小辐射损耗,增加带宽,且_体积比传统滤波器减小了约40%,有利于小型化.

References

[1]  LIU Hai-Wen,LI Zheng-Fan,SUN Xiao-Wei,et al.Novel butterfly shape defected ground structure for microstripline[J].J.Infrared Millim.Waves(刘海文,李征帆,孙晓玮,等.一种新颖的蝴蝶结形缺陷地结构微带线.红外与毫米波学报),2004,23(6):431-435.
[2]  LIU Hai-Wen,SUN Xiao-Wei,LI Zheng-Fan.Low-pass filters of wide stop-band based on photonic band-gap structures[J].J.Infrared Millim.Waves(刘海文,孙晓玮,李征帆.一种基于光子带隙结构的宽阻带低通滤波器.红外与毫米波学报),2004,23(2):135-138.
[3]  Iwasaki H.A circularly polarized small-size microstrip antenna with a cross slot[J].IEEE Trans.Antennas Propagat.,1996,44(10):1521-1528.
[4]  Zhu L,Wecowaki P M,Wu K.New planar dual-mode filter using cross-slotted patch resonator for simultaneous and loss reduction[J].IEEE Trans.Microwave Theory Tech.,1999,47(5):650-654.
[5]  Strassner B,Chang K.New wide-band DC-Block cymbal bandpass filter[J].IEEE Trans.Microwave Theory Tech.,2002,50(5):1431-1432.
[6]  Wolff I.Microstrip bandpass filter using degenerate modes of a microstrip ring resonator[J].Electronics Letters,1972,8(12):302-303.
[7]  Cassinese A,Andreone A,Barra M,et al.Dual mode superconducting planar filters based on slotted square resonators[J].IEEE Trans.Applied Superconductivity,2001,11(1):473-476.
[8]  Hsieh L H,Chang K.Dual-mode elliptic-function bandpass filter using one single patch resonator without coupling gaps[J].Electronics Letters,2000,36(24):2022-2023.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133