在电路结构设计部分，主要讨论了采用集总参数传输零点滤波器实现天线双工器和采用PIN管实现天线开关的设计方法。
The circuit design part mainly introduces the duplexer design with lumped apices filter, and the antenna switch design with PIN diode.
针对地震反演预处理的地震降噪问题，本文结合小波分析设计了一种过零点滤波器，对多分量地震资料进行了面波剔除研究。
In the denoising and preprocessing for seismic inversion, a zero-crossing filter is developed based on wavelet analysis to remove surface waves from the multi-component seismic data.
交叉耦合滤波器的综合从给定的传输零点和回波损耗出发，直到得到各腔体之间的耦合系数。
The synthesis of the cross coupled filter is from prescribed transmission zeros and return loss till the attainment of the coupling matrix of each cavity.
该滤波器在通带附近有一对传输零点，具有良好的频率响应以及频率选择特性。
The filter has a pair of transmission zeros around the passband, excellent frequency response and frequency selectivity.
提出了一种能够抑制多径干扰的基带波形设计方法，该方法是通过保持传输信息速率不变，在成形滤波器第二个零点叠加信号来实现的。
A waveform design method that can restrain the multipath effect was proposed. It was achieved by placing signal on the second zero point of waveform filter and keeping the information rate.
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。
The stopband zero suppression is a stricter design constraint than the vanishing moments, and can more effectively manipulate the stopband characteristics of filters.
新结构的降噪性能对滤波器零点位置不敏感。
The noise reduction performance of this new structure is insensitive to the location of zeros of filter.
而该思想的分析与实现方法一直是设计中的难点，本文在腔体滤波器的优化设计中着重介绍了增加传输零点的方法。
How to design this filter is a complicated question, and this article will focus on ways to increase the transmission zeros during the design of the Coaxial cavity filters.
而滤波器的零点、极点个数及其位置又完全决定了其相移和群延迟的性质。
The characters of phase shift and group delay are controlled by the number and position of zeroes and poles.
针对这两方面的问题，提出了一种用全零点数字滤波器滤除周期性分量的滤波算法。
Aiming at these problems, this paper presents an efficient algorithm which use all zero digital filter for filtering the periodic component.
采用左右对称的输入输出耦合结构便于调整滤波器的传输零点，从而改善带外特性。
Tapped coupling can be used to change the transmission zeros so that the performance of filter is improved.
由于这种类型的微带滤波器实现传输零点不需要通过滤波器非相邻谐振器间的交叉耦合来获得，因此，设计过程非常简单。
As this kind of microstrip hairpin filter does not require cross coupling between the non-adjacent resonators of the filter to obtain transmission zero, the design procedure of the filter is simple.
准椭圆函数滤波器的传输零点，可以位于阻带内的任意位置处，这能更加灵活地对滤波器的带外抑制度进行调节，其矩形系数可以做得很高。
The transmission zeros(TZ) of Quasi-elliptic function filter could be placed in any position, so the attenuation out of band is controllable, then a high selection performance could get.
它可强制滤波器组的频率特性在零频形成零点并使旁瓣面积最小。
It can constrain frequency response of filter Banks to form null at zero frequency point and to obtain minimum side lobe area.
带有一对传输零点的准椭圆函数滤波器相比切比雪夫型滤波器具备更好的选择性。
The quasi-elliptic function filter with one transmission zero has the better selectivity than the general Chebyshev filter.
采用频域的零点配置方法，通过在系统极点附近配置多个滤波器零点设计强鲁棒性的多峰极不灵敏（E I）最优随机时滞滤波器。
Zero placement method in the frequency domain is utilized to design robust multi-hump EI optimal arbitrary time-delay filter (OATF) by placing two or more filter zeros nearby the system poles.
总结引起零点漂移的原因，给出了一种可以有效抑制零点漂移的滤波器的指标和特性，使用该滤波器后，TDE - 324c地震数据采集器的动态范围得到了有效的改善。
In this paper, we summarizes the cause of zero drift, presents a kind of filter to reduce it. The dynamic range of TDE-324C seismic data digitizer is improved remarkably after using this filter.
这种滤波器采用灵活的拓扑结构和耦合结构，可以实现传输零点，从而提高滤波器带外抑制特性，或者使群时延更加平坦。
Flexible topology and coupling structures are used to realize transmission zeros, thereby enhancing the stop band rejection or making more flat group delay.
讨论了滤波器设计中的一些理论，尤其是研究了在滤波器阻带内实现传输零点的一些理论和设计方法。
In the second, filter design theory and methodology has been investigated, especially the cross-coupled resonator filter and the modified chebyshev filter.
讨论了滤波器设计中的一些理论，尤其是研究了在滤波器阻带内实现传输零点的一些理论和设计方法。
In the second, filter design theory and methodology has been investigated, especially the cross-coupled resonator filter and the modified chebyshev filter.
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