提出一种新型的多口三环CSRR结构,利用CSRR谐振器的单极点低通特性和环与微带线之间的耦合,构成低通滤波器。分析该结构的等效电路模式,指出谐振频率的计算公式。使用HFSS适当优化参数,可以得到性能良好的低通滤波器。其-3 d B截止频率8...提出一种新型的多口三环CSRR结构,利用CSRR谐振器的单极点低通特性和环与微带线之间的耦合,构成低通滤波器。分析该结构的等效电路模式,指出谐振频率的计算公式。使用HFSS适当优化参数,可以得到性能良好的低通滤波器。其-3 d B截止频率8.76 GHz,通带内插入损耗小于0.330 6 d B,通带内回波损耗小于-13.810 2 d B,衰减15 d B以上阻带带宽达到10.31 GHz。为了改善通带内的回波损耗,在微带线两侧加载并联开路枝节。其-3 d B截止频率8.385 GHz,通带内插入损耗小于0.174 7 d B,通带内回波损耗小于-19.707 7 d B,衰减15 d B以上阻带带宽达到10.7 GHz。展开更多
In this paper, a design of very compact microstrip bandstop filters based on complementary split ring resonators (CSRRs) is proposed. Two techniques of metamaterial miniaturization are used to optimize the physical an...In this paper, a design of very compact microstrip bandstop filters based on complementary split ring resonators (CSRRs) is proposed. Two techniques of metamaterial miniaturization are used to optimize the physical and electrical size of the CSRR. The bandstop filter is produced by an array of miniaturized loaded CSRRs etched on the center line of a microstrip. The size of the proposed filter, is as small as 0.58 cm2, and its electrical length is very small with only 0.08 λ0), compared to a conventional bandstop filter, a miniaturization of a factor 5 while the bandstop performance is maintained. A very good agreement obtained between the measurement and the simulation results.展开更多
This paper presents the design of a compact bow-tie antenna with triple band notched characteristics for UWB applications. The proposed antenna can operate from 3.1 to 10.6 GHz with VSWR -...This paper presents the design of a compact bow-tie antenna with triple band notched characteristics for UWB applications. The proposed antenna can operate from 3.1 to 10.6 GHz with VSWR - 8.4 GHz) centered at 8.1 GHz, the CSRR2 rejects the WLAN band (5.15 - 5.85 GHz) centered at 5.6 GHz, and the CSRR3 rejects the band (4.10 - 4.47 GHz) centered at 4.32 GHz. Compared with recent design, this antenna is more compact, and presents better simulation results of its characteristics. Our newly designed antenna is a potential candidate for application in UWB communication systems.展开更多
展示了一种新型互补开环谐振器(Complementary Split Ring Resonators,CSRR)。文章分析了CSRR的运行机理,研究了环缝的半径、径向间距对带通滤波器性能的影响,将该结构用于一个三阶波导带通滤波器的设计,并采用有限元法对这种结构的传...展示了一种新型互补开环谐振器(Complementary Split Ring Resonators,CSRR)。文章分析了CSRR的运行机理,研究了环缝的半径、径向间距对带通滤波器性能的影响,将该结构用于一个三阶波导带通滤波器的设计,并采用有限元法对这种结构的传输特性进行了仿真。仿真结果表明,所设计的波导带通滤波器带宽满足指标700 MHz,中心频率10 GHz,插损0.5 dB,具有体积小、性能高的特点。展开更多
文摘提出一种新型的多口三环CSRR结构,利用CSRR谐振器的单极点低通特性和环与微带线之间的耦合,构成低通滤波器。分析该结构的等效电路模式,指出谐振频率的计算公式。使用HFSS适当优化参数,可以得到性能良好的低通滤波器。其-3 d B截止频率8.76 GHz,通带内插入损耗小于0.330 6 d B,通带内回波损耗小于-13.810 2 d B,衰减15 d B以上阻带带宽达到10.31 GHz。为了改善通带内的回波损耗,在微带线两侧加载并联开路枝节。其-3 d B截止频率8.385 GHz,通带内插入损耗小于0.174 7 d B,通带内回波损耗小于-19.707 7 d B,衰减15 d B以上阻带带宽达到10.7 GHz。
文摘In this paper, a design of very compact microstrip bandstop filters based on complementary split ring resonators (CSRRs) is proposed. Two techniques of metamaterial miniaturization are used to optimize the physical and electrical size of the CSRR. The bandstop filter is produced by an array of miniaturized loaded CSRRs etched on the center line of a microstrip. The size of the proposed filter, is as small as 0.58 cm2, and its electrical length is very small with only 0.08 λ0), compared to a conventional bandstop filter, a miniaturization of a factor 5 while the bandstop performance is maintained. A very good agreement obtained between the measurement and the simulation results.
文摘This paper presents the design of a compact bow-tie antenna with triple band notched characteristics for UWB applications. The proposed antenna can operate from 3.1 to 10.6 GHz with VSWR - 8.4 GHz) centered at 8.1 GHz, the CSRR2 rejects the WLAN band (5.15 - 5.85 GHz) centered at 5.6 GHz, and the CSRR3 rejects the band (4.10 - 4.47 GHz) centered at 4.32 GHz. Compared with recent design, this antenna is more compact, and presents better simulation results of its characteristics. Our newly designed antenna is a potential candidate for application in UWB communication systems.
