一种具有双陷波特性的超宽带滤波器设计

针对超宽带(Ultru-wideband,UWB)系统易受窄带信号干扰的问题,文中设计了一种新颖的在5.21GHz和7.95GHz具有双陷波特性的UWB带通滤波器。通过引入互补金属开口谐振环(Complementary Sphit-ring Resonator,CSRR)的方法实现了UWB滤波器的双陷波特性,CSRR结构简单、易于加工、容易与微带平面电路集成.利用仿真软件详细讨论了单环CSRR结构的物理尺寸与滤波器传输特性之间的关系。制作了UWB滤波器实物,测试结果与仿真结果吻合较好,证明了所采用方法的有效性和正确性。

Design of a Ultra-Wideband Filter With Dual Band-Notched Characteristics

A novel ultra-wideband(UWB) bandpass filter with dual band-notched characteristics at 5.21 GHz and 7.95 GHz is proposed in this paper according to that UWB system is easy to be interfered with the narrow-band signals.Dual band-notched characteristics of the UWB filter is realized by the method of introducing complementary split-ring resonator(CSRR),CSRR has simple structure,easy to be fabricated and integrated with microstrip plane circuit.Relations between the physical size of CSRR single structure and the filter’s transmission characteristic is discussed in detail using simulation software.The proposed UWB filter is fabricated,it is in good agreement between simulations and measurements,which verify the effectiveness and correction of the design.