一种具有高选择性和二次谐波抑制功能的紧凑型带通滤波器。

A Compact Band-Pass Filter with High Selectivity and Second Harmonic Suppression.

作者信息

Hadarig Ramona Cosmina, de Cos Gomez Maria Elena, Las-Heras Fernando

机构信息

Signal Theory and Communications Area, Department of Electrical Engineering, University of Oviedo, Multi-Purpose Building, Module 8, Gijón 33203 (Asturias), Spain.

出版信息

Materials (Basel). 2013 Dec 3;6(12):5613-5624. doi: 10.3390/ma6125613.

DOI:10.3390/ma6125613

PMID:28788412

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5452756/

Abstract

The design of a novel band-pass filter with narrow-band features based on an electromagnetic resonator at 6.4 GHz is presented. A prototype is manufactured and characterized in terms of transmission and reflection coefficient. The selective passband and suppression of the second harmonic make the filter suitable to be used in a C band frequency range for radar systems and satellite/terrestrial applications. To avoid substantial interference for this kind of applications, passive components with narrow band features and small dimensions are required. Between 3.6 GHz and 4.2 GHz the band-pass filter with harmonic suppression should have an attenuation of at least 35 dB, whereas for a passband, less than 10% is sufficient.

摘要

本文介绍了一种基于6.4GHz电磁谐振器的具有窄带特性的新型带通滤波器的设计。制作了一个原型，并根据传输和反射系数进行了表征。选择性通带和二次谐波抑制使得该滤波器适用于雷达系统以及卫星/地面应用的C波段频率范围。为避免对此类应用造成严重干扰，需要具有窄带特性且尺寸小的无源元件。在3.6GHz至4.2GHz之间，具有谐波抑制功能的带通滤波器的衰减应至少为35dB，而对于通带，小于10%就足够了。