摘要
该文主要设计一款单馈电的小型圆极化微带天线。通过对天线圆形贴片对称开槽,以及对贴片的边进行切角处理和在中心处开孔等方式,天线获得良好的圆极化性能并实现小型化。该文利用电磁仿真软件HFSS对天线进行优化设计,并进行了相应的实物制作和测试。实验结果表明:该天线工作中心频率为2.49GHz,天线-20dB回波损耗带宽70MHz,圆极化3dB轴比带宽为30MHz,天线增益3.4dB,天线可应用于中国北斗卫星定位接收系统。
A single-feed compact circularly polarized microstrip antenna is designed. The antenna can work at 2. 49GHz, which is applied to Beidou navigation system（BNS） in China. The antenna is designed with four slots equally spaced. By adjusting the slots＇ length and choosing appropriate feed position, circularly polarized radiation of microstrip antenna can be achieved. And by truncating corners and cutting, circular slot in the een- ter of patch, the size of antenna is lowed. Applying ANSOFT HFSS software to simulate the antenna and doing physical test, the results show that the impedance bandwidth corresponding to return loss than -10dB is 130MHz and 3dB axial ration bandwidth is about 30MHz. The peak gain for the proposed antenna is 3. 4dB at 2. 49GHz
出处
《杭州电子科技大学学报（自然科学版）》
2012年第3期17-20,共4页
Journal of Hangzhou Dianzi University：Natural Sciences
关键词
小型化
圆极化
微带天线
增益
轴比
compact
circular polarization
microstrip
gain
axial ratio
