Two Miniaturized Microstrip Patch Antenna for Chinese Compass Navigation Satellite System Based on High-permittivity Substrate
With the rapid development of navigation satellite systems,China is accelerating the pace of development of its own Compass Navigation Satellite System(CNSS for short).In CNSS system,miniaturized antennas are more attractive.However,conventional CNSS antennas work at low operation frequency(L band,1.616±5MHz and S Band,2492±5 MHz)which lead to large scale by using low-permittivity ceramic substrate.Consequently,in this paper,we present two miniaturized CNSS microstrip antennas based on high-permittivity(εr = 16)ceramic substrate.One is corner-cut-patch structure,and the other is two-pair-slot-patch structure.They work at S Band(2492 ± 5 MHz,right-handed circular polarization,RHCP)to receive position information.An experiment was carried out to verify our design.For corner-cut structure,numerical results show that impedance bandwidth(S11 <-10 dB),3 dB axial ratio bandwidth and gain are about 62 MHz,15 MHz,and 3.48 dB,and measured results shows that impedance band-width(S11 <-10 dB)and 3 dB axial ratio bandwidth are about 66 MHz,12 MHz,respectively.Meanwhile,for slot structure,numerical results show that impedance bandwidth(S11 <-10 dB),3 dB axial ratio bandwidth and gain are about 94 MHz,23 MHz,and 3.96 dB,and measured results shows that impedance bandwidth(S11 <-10 dB)is about 132MHz and 3 dB axial ratio bandwidth is much larger than 22 MHz,respectively.Obviously,the characteristics of slot-patch structure are better than the characteristics of corner-cut structure.Measured results fit well with the simulation results.The two antennas can fully meet the requirement of CNSS.Mean-while,comparing with the conventional low-permittivity substrate antennas,the two antennas remain their well performances with a reduced size by 75%to 80%.Such advantages make it proper to practical applications.
Hangying Yuan Shaobo Qu Jieqiu Zhang Jiafu Wang Hua Ma Lin Zheng Mingbao Yan
College of Science,Air Force Engineering University,Xian 710051,China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
1490-1493
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）