大连海事大学学报 >
2017 , Vol. 43 >Issue 1: 114 - 118
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2017.01.018
基于E型贴片微带结构的无线电视发射天线
收稿日期: 2016-04-27
修回日期: 2016-07-06
网络出版日期: 2016-07-19
基金资助
国家自然科学基金资助项目（61571075）.
Wireless television transmitting antenna based on E-shaped patch microstrip structure
Received date: 2016-04-27
Revised date: 2016-07-06
Online published: 2016-07-19
为减小传统电视发射天线的体积，提出将微带结构天线应用于电视发射系统的方法，设计一种基于E型贴片叠层的微带天线.通过采用叠层结构、E型贴片、馈电探针加装金属垫圈、空气填充和7/16射频同轴连接器，实现了微带结构的电视发射天线.为验证方法的有效性，加工了一款微带结构的UHF频段电视发射天线.测试结果表明：天线驻波比小于1.15（|S11| ≤-23 dB）的相对阻抗带宽达到18.2%（频率范围544 MHz ~ 653 MHz）；中心频率处天线增益为9.23 dBi；在1000W发射功率下，天线能够可靠工作.设计的微带结构电视发射天线尺寸显著减小,简化了天线结构和调试过程，从而节约了天线的制作成本.
李德君 , 房少军 , 刘宏梅 . 基于E型贴片微带结构的无线电视发射天线[J]. 大连海事大学学报, 2017 , 43(1) : 114 -118 . DOI: 10.16411/j.cnki.issn1006-7736.2017.01.018
To reduce the volume of the traditional TV transmitting antenna, the method was proposed by using microstrip antenna in TV transmission system, and an E-shaped patch antenna based on stacked structure was designed. By using the stacked structure, the E-shaped patch, the washer on the probe of the feed, the air substrate and the 7/16 type RF coaxial connector, the television transmitting antenna for microstrip structure was realized. To verify the effectiveness of the proposed method, a microstrip structure of UHF band TV transmitting antenna was processed. Test results show that the impedance bandwidth of the proposed antenna for |S11| ≤-23 dBis extended to 18.2 %(frequency range from 544 MHz to 653 MHz).The antenna gain is 9.23 dBi at the center frequency and can normally work under 1000 W input power. The microstrip patch antenna for the TV transmitting system greatly reduces the size and simplifies the structure of the TV transmitting antenna, as a result, the cost of the antenna can be largely saved.
Key words： TV transmitting antenna; E-shaped patch; stacked structure
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