Improve of stopband attenuation and passband fluctuation.
带内波动、带外抑制特性的改善。
Introduces a SIR electric filter with improved stopband performance.
介绍了一种改进阻带性能的SIR滤波器。
The filter selectivity and stopband attenuation can be easily specified or controlled.
所设计滤波器的选择性和阻带衰减可预先给定并易于控制。
A novel compact electromagnetic bandgap structure is presented, which provides ultra-wide stopband.
提出了一种新颖的小型超宽阻带电磁带隙结构。
Measurement result shows that this novel EBG structure has good stopband characteristic in a wide band.
测量结果显示，新型EBG结构在宽频带内具有良好的阻带特性。
The proposed period Defected Ground Structure (DGS) provides the excellent cutoff and stopband characteristics.
设计的周期DGS单元结构有非常好的截止和带阻特性。
Therefore, there is a perfect compromise between attenuation in stopband and group delay or loss variation in passband.
因此，它在带外衰减与带内幅度特性和带内群时延特性之间有了一个较好的折中。
The design method of an active SAW filter module with low frequency and high stopband rejection is introduced in this paper.
介绍了一种低频高阻带抑制SAW有源滤波组件的设计方法，并介绍了最新研制的滤波组件的性能。
A cascaded SINE filter is introduced after the COSINE one which improves the stopband characteristics to compensate the passband drop.
该滤波器在采用COSINE滤波器提高阻带特性的基础上，级联了一个SINE滤波器，补偿了其通带衰减。
Based on the frequency sampling technique, we have proposed a new method for designing linear-phase FIR filters with steerable stopband dips.
本文在频率采样法的基础上提出了具有可控阻带凹陷特性的线性相位FIR滤波器的设计。
Utilizing the three-band lifting scheme, the paper designs a novel family of biorthogonal interpolating complex wavelets with stopband zero suppression.
本文利用三带提升方法构造了一类具有阻带零点抑制的三带双正交复内插子波 。
The elliptic-function filter using hairpin stepped impedance has such advantages as compact structure, low insertion loss, broad-stopband and high steep.
应用发夹线高低阻抗线设计的椭圆函数滤波器具有体积小、插损低、宽阻带、高陡峭度的显著优点。
The theoretical results show that for TM waves there exist frequency passband (s) and stopband (s) which can be switched into each other by varying the power.
理论分析表明，非线性TM表面波存在频率通带和禁带，通过调节导波功率可以实现通带和禁带之间的转换。
The stopband zero suppression is a stricter design constraint than the vanishing moments, and can more effectively manipulate the stopband characteristics of filters.
阻带零点抑制是比消失矩约束更为严格的设计条件，能够更有效地控制滤波器的阻带特性。
It can be found from the computer emulation that the IIR filter has the better passband and stopband characteristics than FIR filter with the same number of tap-weight.
从计算机仿真结果可以看出，当滤波器抽头数相同时，IIR滤波器具有更好的通带和阻带特性。
The slope selectivity and the stopband of the filters are further improved by utilizing a combination of source-load coupling and over-moded cavities in the same filter.
在同一个滤波器中同时使用源端负载端耦合和多模腔融合技术，使滤波器的频率选择斜率和阻带性能得到改善。
The utility model has the characteristics of not only flat passband and stopband with large width and high isolation, but also low voltage and high velocity wavelength tuning.
本实用新型具有大平坦宽度的通带和阻带及高隔离度的同时，还具有低电压和高速的波长调谐等特性。
Two improved DGS circuits was designed, fabricated, and measured. Measurements show that the passband or enlarging stopband bandwidth can be obtained with the new DGS circuits.
设计、制造、测试了两个改进的缺陷地结构电路，测试结果表明该新型DGS可以产生通带和较宽的阻带。
Especially, regularity as one of the constraints assure the flatness in passband and the high attenuation in stopband, even the value of stopband response is very close to zero.
尤其是本文把正则阶作为约束条件之一，从而保证了滤波器通带的平坦性和阻带的快速衰减，并且在阻带滤波器的频谱值非常接近于零。
Effective method have really been provided for making high stopband rejection and high frequency SAWF and correctly using them and optimizing the component function as far as possible.
为制作高阻带抑制高频SAWF和正确使用高频SAWF，尽可能优化器件性能，提供了有效方法。
It is shown experimentally that a method available for compensating for the diffraction by centre frequency in narrow band filters can effectively improve their stopband characteristics.
本文介绍适用于窄带滤波器的中心频率衍射补偿方法。实验表明，此方法可以有效地改善滤波器的阻带特性。
The bandpass filter that has spurious suppression characteristics can solve this problem and it has excellent bandpass symmetry and stopband attenuation characteristics at high frequency.
具有杂波抑制特性的带通滤波器不仅可以实现这个功能，同时由于抑制了杂波还可以提高带通滤波器的通带对称性以及高端阻带的衰减特性。
The design method of an active SAW filter module with low frequency and high stopband rejection is introduced in this paper. The performances of the module developed recently are also given.
介绍了一种低频高阻带抑制SAW有源滤波组件的设计方法，并介绍了最新研制的滤波组件的性能。
The design method of an active SAW filter module with low frequency and high stopband rejection is introduced in this paper. The performances of the module developed recently are also given.
介绍了一种低频高阻带抑制SAW有源滤波组件的设计方法，并介绍了最新研制的滤波组件的性能。
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