分类：天线图纸    下载：1    浏览：375    时间：2020-08-13

无线论坛讨论贴：https://www.anywlan.com/thread-46164-1-1.html Gain ＝21.8 dBi, SWR=1.27

分类：天线资料    下载：1    浏览：373    时间：2017-08-06

刘庆刚 ，张光生。 (1．海军司令部信息化部，北京100841；2．中国电子科技集团公司第三十六研究所，浙江嘉兴314033) 摘 要：利用HFSS软件对设计的螺旋阵列天线进行了仿真研究。针对互耦影响导致的阵列天线合成效率较低的问题，提出在阵列中添加辅助单元天线的方法，以减小互耦，提高辐射效率。通过仿真对提出的方法进行验证，结果表明采用增加辅助单元天线的方法可有效提高阵列合成效率。 关键词：阵列天线；互耦；螺旋天线

分类：天线图纸    下载：3    浏览：369    时间：2020-08-13

无线论坛贴子：https://www.anywlan.com/thread-89808-1-1.html     对于“四桨龙舟”“五兔迎春”“事事如意”这样具有较高增益的铜片天线，往往需要较大的铜片，很多穷人就只好望洋兴叹了。     前些日子优化了拼接版的“四桨龙舟”阵列天线，参见这个帖子：     拼接版的“四桨龙舟”——给没有铜板，铝板也不多的朋友，穷人的龙舟！         http://forum.anywlan.com/thread-83915-1-1.html     今天再来发布“五兔迎春”和“事事如意”的拼接版铝片阵列天线。     考虑到铜片较贵，所以把铜片换成铝片。考虑到原来仿真的0.5mm厚度显得单薄，所以换成1mm厚，以增加天线的机械强度。

分类：天线资料    下载：0    浏览：368    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：0    浏览：366    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：366    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：天线图纸    下载：3    浏览：364    时间：2020-08-13

无线论坛讨论贴：https://www.anywlan.com/thread-46145-1-1.html SWR=1.17 GAIN＝18.58 RDF达到了17.9说明能量相当集中。

分类：天线资料    下载：0    浏览：360    时间：2017-08-10

&#160;螺旋天线与开槽天线

分类：天线资料    下载：1    浏览：354    时间：2017-08-09

天线的基础知识

分类：天线资料    下载：0    浏览：353    时间：2017-08-06

作者  金剑平 摘要摘　要： 铁氧体带线结环行器广泛地应用在移动通信设备中，文章基于结环行器场理论和路理论（等效谐振电路），以双Y型带线结环行器的仿真设计为例，研究如何采用有限元分析法，利用3维全波电磁场分析软件HFSS设计和仿真带线结环行器，并介绍带线结环行器的应用。

分类：天线资料    下载：3    浏览：351    时间：2022-11-22

Book Abstract A periodic surface is an assembly of identical elements arranged in a one or two-dimensional array. Such surfaces have various effects on incident electromagnetic waves. Their applications range from antennas to stealth aircraft.This book discusses finite antenna arrays and how to minimize the radar cross section of these arrays. "Ben has been the world-wide guru of this technology...Ben Munk has written a book that represents the epitomy of practical understanding." W. Bahret, United States Air Force Frequency selective surfaces (FSSs) have important military and civilian applications including antenna theory, satellite communications and stealth technology Author is an authory on the subject, having been instrumental in the development of stealth technology for the US Air Force Much of the material in this book was deemed classified due to its importance to defence

分类：天线资料    下载：0    浏览：350    时间：2022-11-21

Analog circuit and system design : a tutorial guide to applications and solutions 作者:Bob DobkinJim Williams Covers the fundamentals of linear/analog circuit and system design to guide engineers with their design challenges -- Based on the Application Notes of Linear Technology, the foremost designer of high performance analog products, readers will gain practical insights into design techniques and practice -- Broad range of topics, including power management tutorials, switching regulator design, linear regulator design, data conversion, signal conditioning, and high frequency/RF design. -- Contributors include the leading lights in analog design, Robert Dobkin, Jim Williams and Carl Nelson, among others. ... Analog circuit and system design today is more essential than ever before. With the growth of digital systems, wireless communications, complex industrial and automotive systems, designers are challenged to develop sophisticated analog solutions. This comprehensive source book of circuit design solutions will aid systems designers with elegant and practical design techniques that focus on common circuit design challenges. The book's in-depth application examples provide insight into circuit design and application solutions that you can apply in today's demanding designs."--Provided by publisher