摘要
如今的单馈点双层微带天线具有厚度大,回拨损耗高的弊端,制约了其微型化以及小周期特征的发展。依据微带天线的工作特征曲线,设计了一种双频段圆极化GPS微带天线,在考虑回波损耗的基础上,通过增加圆环形贴片,改变贴片间空气层的厚度,对增加芯片的介电常数进行研究,采用腔模理论分析方法,对增加圆环形贴片的微带天线干扰进行优化分析,使其保证抗扰性最优。通过电磁仿真软件HFSS 11进行仿真,结果说明,所设计的双层微带天线其阻的抗带宽分别是46 MHz(9.1%)以及34 MHz(4.6%),具有较高的回波损耗特征以及增益,并且提高了天线设计的效率。
Now the single feed point of double-layer microstrip antenna with large thickness, back to dial the disadvantages of high loss, restricting the development of the miniaturization and the characteristics of small cycle. According to working characteristic curve microstrip antenna, the design is a kind of GPS and dual-band circular polarization microstrip antenna, on the basis of considering the return loss, by increasing the circular patch, the thickness of the air layer between the patch and the dielectric constant of how to increase the chip, usually adopts the modes theory analysis method, to increase the circular patch microstrip antenna interference optimization analysis, the perturbation resistance make it guarantee optimality. , through the electromagnetic simulation software HFSS 11 simulation results shows that the designed two-layer microstrip antenna impedance bandwidth of the resistance were 46 MHz (9.1%) and 34 MHz (4.6%), has the high return loss and gain, and improve the efficiency of the antenna design.
出处
《科技通报》
北大核心
2015年第7期179-182,共4页
Bulletin of Science and Technology
关键词
圆极化
双频特性
微带天线
天线
circularly polarized
dual-frequency behavior
microstrip antenna
antenna
