分类：天线资料    下载：2    浏览：304    时间：2017-08-10

双反射面天线、馈源喇叭、单脉冲天线

分类：天线资料    下载：0    浏览：342    时间：2017-08-10

 螺旋天线与开槽天线

分类：天线资料    下载：0    浏览：349    时间：2017-08-10

陈小娟，袁乃昌 (国防科技大学微波中心，湖南长沙410073) 摘要：平面阿基米德螺旋天线具有极宽的工作频带，然而其匹配平衡电路的宽频带实现则较难。尤其是在加反射腔以使其单向辐射时。在4—6GHz范围内仿真并实际制作出了用于某S波段雷达系统单向辐射的平面螺旋天线，给出了设计参数值、仿真结果及实测结果。 关键词：阿基米德螺旋天线；宽频带；巴仑；反射腔

分类：天线资料    下载：16    浏览：1297    时间：2017-08-10

本书介绍了近代多种天线的基本原理、特点、设计方法和步骤。 林昌禄:1937～,四川罗江县人,电子科技大学教授,电磁场与微波技术学科博士导师著有《近代天线设计》等 电子科技大学教授 电子科技大学任教

分类：天线资料    下载：0    浏览：546    时间：2017-08-10

何山红   傅永生 (南京电子技术研究所.江苏南京  东南大学移动通信国家重点实验室.江苏南京) 摘要：介绍了作为反射面天线馈源的宽频带+双极化+恒波束四脊喇叭.运用有限元和模式匹配相结合的混合法详细推导且计算了四脊喇叭的广义散射矩阵1然后运用口面积分计算了四脊喇叭的辐射远场.给出了四脊喇叭和用四脊喇叭做馈源的反射面天线的实测结果1 关键词：四脊喇叭.馈源.有限元法.模式匹配法.混合法.广义散射矩阵

分类：天线资料    下载：0    浏览：346    时间：2017-08-10

Abstract In this paper, a novel dual-band broadband array antenna with low profile and dual polarization is proposed and developed. The array is formed by arc-probe-fed annular ring elements and pairs of cross microstrip dipoles nested together. The bandwidth of the annular ring antenna is improved through arc-probe-fed technique. The measured impedance bandwidths determined by VSWR<2 cover 806~960 MHz and 1710~2170MHz. The port isolation and the symmetry of the radiation for the lower band are improved by the “anti-phase and dual-feed” technique which also reduces the cross polarization level. The influences on the radiation patterns of upper band caused by the phase error are invested and the radiation patterns are improved through the phase compensation. In the end, the array is designed and the simulated and measured results are presented. The proposed array antenna is highly applicable to the base station of multi-band operations. Key words: Dual-band antenna, Dual-polarization, Broadband, Annular antenna, Printed microstrip dipole

分类：天线资料    下载：0    浏览：427    时间：2017-08-10

Abstract In this paper, a novel linear array antenna is proposed and investigated experimentally and the measured results are plotted. The measured impedance bandwidth determined by VSWR<1.5 covers 1710~2170MHz and the port isolation is better than -30dB by additive isolated conducting frames which change the other array characters very little. The cutting slots in the side walls of the ground provide the given HPBW of 90±8°(Half-Power Beam Width) in azimuth plane and maintain a stable array characters. The antenna has a high front-to-back ratio of radiation pattern of 25dB and a low cross polarization level (-10dB in the forward region and -22dB on the axes of peak gain). The array formed by printed microstrip antennas mainly features in the slots and the isolated conducting frames which ensure the array characters satisfy the wireless communication criterions. The array antenna is highly suitable for the base station applications for 3G system. Key words: Base station antennas, Broadband, Dual-polarization, Port isolation, Cross polarization

分类：天线资料    下载：0    浏览：354    时间：2017-08-10

ICWMMN(国际无线、移动和多媒体网络会议) 2006论文集 Abstract A novel linear array formed by diamond antennas with low profile and high isolation is developed and studied experimentally in this paper. The array can provide unidirectional patterns with a HPBW (Half-Power Beam Width) of 65±6° in azimuth plane and more than 15dBi peak gain in 1710-2170MHz with VSWR<1.5. The antenna consists of five dual-polarized array elements named “four-diamond” antenna. The isolation of two different polarized input ports of the array can be enhanced to -30dB by employing some isolation enhancement technologies. A dual-polarized broadband linear array is fabricated and the measured results are presented. The proposed array antenna is suitable for the GSM1800, CDMA1900 and ITU’s IMT-2000 base station applications. Key words: Base Station Antenna, Dual-polarization, Broadband, Isolation Enhancement, Four-diamond antenna

分类：天线资料    下载：2    浏览：579    时间：2017-08-10

移动通信终端天线设计  吴群 共5章

分类：天线资料    下载：2    浏览：414    时间：2017-08-09

目录 1无线电波的基本知识 2超短波的传播 3天线辐射电磁波的基本原理 4关于传输线的几个基本概念 5典型的移动基站天线技术指标综述 6通信距离方程

分类：天线资料    下载：1    浏览：624    时间：2017-08-09

目    录 一、天线的基本特性 1、          天线辐射的方向图 2、          天线的增益 3、          天线的驻波比 4、          天线的极化 5、          天线参数在无线组网中的作用 6、          通信方程式。 二、网络优化中的天线 1、          网络优化的概念 2、          网络优化的主要内容 3、          网络优化中天线的作用 三、海天公司为无线网络优化研制的天线介绍 1、          遥控电调电下倾天线 2、          公路双向天线 3、          高速公路覆盖用的高增益天线 4、          120o双极化天线 5、赋形天线

分类：天线资料    下载：4    浏览：493    时间：2017-08-09

第一部分：天馈线安装与测试