标题: 利用任意耦合长度设计平行耦合微带线带通滤波器及其微小化
A Compact Parallel Coupled Microstrip Bandpass Filter Design with Arbitrary Coupled Length
作者: 林永顺
Yong-Shun Lin
郭仁财
Jen-Tsai Kuo
电信工程研究所
关键字: 任意耦合长度带通滤波器;Filter Design with Arbitrary Coupled Length
公开日期: 2001
摘要: 本篇论文利用“任意耦合长度”,设计平行耦合微带线带通滤波器,达到电路微小化的设计。本文改变一般平行耦合微带线滤波器的设计流程,先固定每一段耦合线段的线宽、间距,再利用公式求得每段耦合线段所需的耦合长度。为了达到电路微小化及降低成本,参考近年一些文献以及利用模拟软体,分析折叠共振腔的共振特性。经由模拟结果发现,可以将电路尺寸大幅地缩小很多,且不影响滤波器的通带响应。文中设计并制作数个三阶与五阶的柴式带通滤波器电路:中心频率为2.45GHz,比例频宽10%、20%,,并与实际量测结果比较。
This thesis aims at designing microstrip bandpass filters with compact size. Coupled stages with folded lines are used. To make the effectiveness in reducing the circuit size as efficient as possible, both the width and gap of the coupled microstrip lines are chosen as small as possible. We analyze and compensate the folded resonators and coupled folded resonators, so that bandpass filters can be constructed with coupled multiple folded lines. A scheme for design coupled stages with an arbitrary coupled length is also incorporated into the design, for the convenience of resonator folding. Several Chebyshev filters of orders three and five are fabricated and measured to demonstrate the idea.
URI: http://140.113.39.130/cdrfb3/record/nctu/#NT900435104
http://hdl.handle.net/11536/68983
显示于类别:Thesis