[1]刘彤,樊宏,沈连丰.无线家庭网络印制倒F型天线的分析与设计[J].东南大学学报(自然科学版),2006,36(2):183-188.[doi:10.3969/j.issn.1001-0505.2006.02.001]
 Liu Tong,Fan Hong,Shen Lianfeng.Analysis and design of printed IFA for WHAN[J].Journal of Southeast University (Natural Science Edition),2006,36(2):183-188.[doi:10.3969/j.issn.1001-0505.2006.02.001]
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无线家庭网络印制倒F型天线的分析与设计()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
36
期数:
2006年第2期
页码:
183-188
栏目:
电磁场与微波技术
出版日期:
2006-03-20

文章信息/Info

Title:
Analysis and design of printed IFA for WHAN
作者:
刘彤1 樊宏2 沈连丰1
1 东南大学移动通信国家重点实验室, 南京 210096; 2 解放军69046部队, 乌鲁木齐 830002
Author(s):
Liu Tong1 Fan Hong2 Shen Lianfeng1
1 National Mobile Communication Research Laboratory, Southeast University, Nanjing 210096, China
2 Unit 69046 of Peoples Liberation Army, Wulumuqi 830002, China
关键词:
无线家庭网络 印制倒F型天线 交叉极化 等向辐射 蓝牙
Keywords:
WHAN printed IFA cross polarization isotropic radiation Bluetooth
分类号:
TN82
DOI:
10.3969/j.issn.1001-0505.2006.02.001
摘要:
从电波传播机理出发,分析室内电波的退极化现象,研究WHAN对天线的极化、辐射及阻抗匹配特性的特殊要求.从传输线理论入手,推导出印制IFA输入阻抗的解析式,并据此分析其输入阻抗随其水平分枝长度变化的规律.根据印制IFA各分枝的电流分布特性,得出其空间辐射电场的解析式,从而证明其辐射既具有等向特性又具有交叉极化特性.仿真印制IFA各尺寸参数变化对其输入阻抗和谐振频率的影响效果,给出其规律及设计方法,并设计出一例适用于蓝牙WHAN的小尺寸印制IFA.测试结果表明,在2.4 GHz频率附近,电压驻波比为2.0时的带宽约为490 MHz,可完全覆盖蓝牙的工作频段2.400~2.484 GHz,而且所测方向图也进一步印证该天线确实具有等向辐射特性和交叉极化特性.此外,该天线可与蓝牙模块合为一体,其各种蓝牙产品均已商用,并获江苏省科技进步一等奖.
Abstract:
Starting with radio wave propagation mechanism, the indoor depolarization phenomenon is analyzed, and the special antenna requirements of WHAN(wireless home area network)for polarization, radiation and impedance match are researched. Proceeding with the transmission line theory, the analytic formula of the input impedance for the printed IFA(inverted F antenna)is educed, and the regularity of its impedance variation with its horizontal branch length is studied. Based on the current distribution characteristic of each branch of the printed IFA, the analytic formula of the radiation electric field is derived, which proves that the printed IFA has both isotropic radiation and cross polarization characteristics. The impacts of all the dimension parameters on both input impedance and resonant frequency of the printed IFA are simulated, and the impact regularity along with the antenna design method is given as well, based on which a small size printed IFA for Bluetooth WHAN is designed. The experimental results show that around 2.4 GHz when VSWR(voltage standing wave ratio)is below 2.0 the band width is about 490 MHz, which is enough for the 2.400-2.484 GHz band of Bluetooth, and the measured radiation patterns also testify further that the antenna has both isotropic radiation and cross polarization characteristics. Furthermore, the antenna can be integrated with Bluetooth module, and varieties of Bluetooth products with the antennas are already in commercial usage, which has won Science & Technology Advancement Prize of Jiangsu Province.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家高技术研究发展计划(863计划)资助项目(2003AA1Z1110)、江苏省高技术研究资助项目(BG2003004)、教育部科学技术研究重点资助项目(02171).
作者简介: 刘彤(1971—),男,博士生,讲师; 沈连丰(联系人),男,教授,博士生导师,lfshen@seu.edu.cn.
更新日期/Last Update: 2006-03-20