Each required bandpass filter is reduced to two lowpass filters which are relatively simple in design by using complex demodulation. The decomposition and reconstruction architecture are introduecd.

利用复解调技术将设计带通滤波器组转化为设计相对简单的低通滤波器组问题，给出了分解与重构的系统流程。

In order to further decrease the size of the filter, a two-layer microstrip bandpass filter is also designed.

为了进一步减小滤波器尺寸，本文还设计了一个双层结构的微带带通滤波器。

It proves by practising that this designing method of microstrip pectinate bandpass filter and interlaced digital filter is simple and of good effect.

实验证明，用此方法设计微带线梳状带通滤波器及交指型滤波器，方法简单、效果优良。

The computer programs for design of suspended stripline and bandpass filter are established.

建立了设计悬置带线及其带通滤波器的计算机通用程序。

A novel planar dual-mode bandpass filter with double-corner cuts was proposed on the basis of traditional square patch dual-mode filter.

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。

The microstrip hairpin bandpass filter has been widely used in RF and microwave field for its compact structure and steady performances.

微带发夹型带通滤波器以其尺寸小，性能稳定等优点在射频微波领域得到了广泛应用和发展。

Microstrip dual-mode bandpass filter with novel rectangular-loop has been studied in this dissertation to realize miniaturized broadband bandpass filter which is easy to adjust.

基于这一背景，本文主要研究基于新型微扰小环的微带双模滤波器技术，目的是得到调试灵活的小型化宽带带通滤波器。

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。

In this thesis, some research of the design methods and new structures, techniques and miniaturization of bandpass filter in wireless communication systems are proposed.

本文就微带带通滤波器的设计方法、新的结构和滤波器的小型化进行了分析和研究。

The designing filter is a bandpass filter consisting of four high Q value dielectric coaxial resonators. They were coupled to each other through capacitors on the dielectric substrate.

在陶瓷基片上形成电容耦合，制造了四级式低损介质谐振器滤波器。

Microstrip dual-mode bandpass filter not only has the advantage of miniaturization, high performance and low cost, but also is easy to integrate.

微带双模带通滤波器不仅具有小型化、高性能、低成本的特点，而且易于实现电路集成。

Last, a new microstrip bandpass filter is proposed on the basis of traditional square filter in this paper, which solves the problems of radiation loss and big volume in the traditional filter.

第三部分提出了一种新的微带带通滤波器结构。该结构很好解决了传统微带滤波器的辐射损耗和体积大等问题。

The precise expression for the insertion loss of the parallel coupled microstrip line output bandpass filter has been given on the basis of related mathematical models.

本文在相关数学模型的基础上，推导出平行耦合微带线和平行耦合微带线输出带通滤波器插损的精确表达式。

A novel spiral inductor resonator bandpass filter based on LTCC is proposed in this paper.

本文提出一种新型的基于低温共烧陶瓷技术(LTCC)的螺旋电感带通滤波器。

The bandpass filter we designed has a strict demand on the consistency of phase.

介绍了对相位一致性有严格要求的带通滤波器。

At last, simulation and test results of properties are analyzed, proving that the fine-tuning cavity bandpass filter is designed accurately and has a good application prospect.

最后阐述了仿真与性能测试结果分析，测试结果分析说明微调谐腔体带通滤波器设计精确且拥有很好的应用前景。

In this thesis, the related theories and technologies of the step-impedance dual-band bandpass filter are studied mainly, with an emphasis on the synthesis and design of this filter.

本文以阶梯阻抗双频带通滤波器的综合与设计为主，并研究了与之相关的理论和技术。

To measure phase accurately in the presence of harmonics for both noisy input signals, a technique based adaptive bandpass filter (ABF) and the method of interchanging signal channel is presented.

为了测量受噪声和谐波干扰的两个信号间的相位差，基于自适应带通滤波器(abf)和测量信道交换技术，提出了一种新的测量方法。

Thirdly, a dual-mode dual-band bandpass filter with rectangular-loop perturbation and stacked structure is presented.

再次，设计实现了基于微扰小环和垂直叠放结构的微带双模双通带带通滤波器。

This paper presents a simple tracking filter circuit, which is applicable to Doppler radar sets and consists mainly of a switched bandpass filter and a phase-locked loop.

本文提出一种简单的跟蹤滤波器电路，该电路可用于多普勒雷达，主要由开关式带通滤波器和锁相环组成。

A microwave bandpass filter on the double-sided HTS YBCO film was designed and fabricated and tested using a new coupling double-resonator.

设计、制作并测试了一种采用新颖耦合双谐振器结构的高温超导微波带通滤波器。

In this paper, a kind of dual tunable narrow bandpass filter is proposed based on the structure of all optical active fiber ring resonator.

提出一种基于全光纤有源环形腔结构的双可调谐窄带滤波器。