一种GPS有源天线射频电路的设计方法
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摘要
文中提出一种GPS有源天线射频电路的设计方法。该天线射频电路主要分为合路与放大单元,合路单元主要包括相移网络和信号合路,放大单元主要包括LNA、放大模块、电阻衰减器和滤波器。根据设计方案与指标,有源天线的射频电路总增益,计算结果为34.67 dB,仿真为32.4 dB,相差近2.27 dB,噪声系数理论计算为0.92 dB,仿真为1.15 dB,相差0.23 dB,都满足设计指标。而通道的带内波动和带外抑制主要取决于两级SAW滤波器的实际性能,根据器件分析,也满足设计指标。
This article proposes the RF circuit design method of GPS active antenna. The antenna RF circuit is mainly divided into the combination circuit and the amplification unit. The combination unit mainly includes the phase shift network and the signal combination circuit. The amplification unit mainly includes LNA,amplification module,resistance attenuator,filter and so on. According to the design scheme and index,the total RF gain of the active antenna is 34.67 dB,the simulation is 32.4 dB,the difference is nearly 2.27 dB,the noise figure is calculated as 0.92 dB,the simulation is 1.15 dB,and the difference is 0.23 dB. Both satisfy the design index. The in-band fluctuation and out-of-band suppression of the channel mainly depend on the actual performance of the two-stage SAW filter. According to the device analysis,the design index is also satisfied.
This article proposes the RF circuit design method of GPS active antenna. The antenna RF circuit is mainly divided into the combination circuit and the amplification unit. The combination unit mainly includes the phase shift network and the signal combination circuit. The amplification unit mainly includes LNA,amplification module,resistance attenuator,filter and so on. According to the design scheme and index,the total RF gain of the active antenna is 34.67 dB,the simulation is 32.4 dB,the difference is nearly 2.27 dB,the noise figure is calculated as 0.92 dB,the simulation is 1.15 dB,and the difference is 0.23 dB. Both satisfy the design index. The in-band fluctuation and out-of-band suppression of the channel mainly depend on the actual performance of the two-stage SAW filter. According to the device analysis,the design index is also satisfied.
引文
[1]高阳,董树荣,王德苗. GPS天线技术及其发展[J].无线通信技术,2008(4):34-39.
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[5]王被德.电磁波的极化及其应用[J].电波科学学报,1999,14(3):347-356.
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[9]刘畅,梁晓新,阎跃鹏.射频宽带低噪声放大器设计[J].电子测量与仪器学报,2009:196-202.
[10]梁立明,南敬昌,刘影.基于ADS射频低噪声放大器的设计与仿真[J].计算机仿真,2009,26(11):352-355.
[11]赵霞.基于ADS的平衡式低噪声放大器设计[J].火控雷达技术,2009,38(2):68-71.
[12]潘安,成浩,葛俊祥.X波段低噪声放大器的设计与仿真[J].现代雷达,2014,36(1):66-70.
[13]丛密芳,南敬昌,李久超.RFID低噪声放大器设计与仿真[J].计算机仿真,2011,28(4):393-401.
[14]王磊,胡永辉.C波段卫星信号接收机低噪声放大器的设计[J].时间频率学报,2007,30(1):37-44.
[15]刘峰,邵晖,李远朝,等.射频电路噪声系数的测量方法研究[J].国外电子测量技术,2014,33(12):4-8.
[16]李树翀,韩振宇,刘新宇,等.RF模块中微带线的设计及实现[J].半导体技术,2005,30(2):51-54.
[17]郭国法,高杨浩,张开生.基于无线射频识别与电力载波的特定场合服务系统的研究[J].现代电子技术,2016(22):154-157.
[18]沈小青,丁风海,王志虎,等.窄带低噪声系统噪声系数测量[J].自动化与仪器仪表,2018(3):204-206.
[19]仝毅刚,李宁.新型石墨烯超级电容器的研制[J].西安工程大学学报,2016(3):333-339.
[2]何征,蒙继东,尚社.基于GPS照射源的双基地新体制雷达探测系统[J].电子设计工程,2015,23(21):32-34.
[3]战杰,孙贵新.双频GPS载波相位相对定位精度分析与评估[J].电子设计工程,2016,24(16):70-75.
[4]于雪晖,李集林,殷杰.GPS接收机环路鉴别方法研究与性能分析[J].电子设计工程,2017,25(6):118-122.
[5]王被德.电磁波的极化及其应用[J].电波科学学报,1999,14(3):347-356.
[6]毕娜娜,刘德喜.GPS分路放大器的设计[J].遥测遥控,2014,35(6):29-37.
[7]高伟,晏磊,徐紹铨等.GPS天线相位中心偏差对GPS高程的影响及改正研究[J].仪器仪表学报,2007,28(9):2052-2057.
[8]王峥,周以国,郭俊栋.宽带低噪声放大器ADS仿真与设计[J].集成电路设计,2010,14:9-13.
[9]刘畅,梁晓新,阎跃鹏.射频宽带低噪声放大器设计[J].电子测量与仪器学报,2009:196-202.
[10]梁立明,南敬昌,刘影.基于ADS射频低噪声放大器的设计与仿真[J].计算机仿真,2009,26(11):352-355.
[11]赵霞.基于ADS的平衡式低噪声放大器设计[J].火控雷达技术,2009,38(2):68-71.
[12]潘安,成浩,葛俊祥.X波段低噪声放大器的设计与仿真[J].现代雷达,2014,36(1):66-70.
[13]丛密芳,南敬昌,李久超.RFID低噪声放大器设计与仿真[J].计算机仿真,2011,28(4):393-401.
[14]王磊,胡永辉.C波段卫星信号接收机低噪声放大器的设计[J].时间频率学报,2007,30(1):37-44.
[15]刘峰,邵晖,李远朝,等.射频电路噪声系数的测量方法研究[J].国外电子测量技术,2014,33(12):4-8.
[16]李树翀,韩振宇,刘新宇,等.RF模块中微带线的设计及实现[J].半导体技术,2005,30(2):51-54.
[17]郭国法,高杨浩,张开生.基于无线射频识别与电力载波的特定场合服务系统的研究[J].现代电子技术,2016(22):154-157.
[18]沈小青,丁风海,王志虎,等.窄带低噪声系统噪声系数测量[J].自动化与仪器仪表,2018(3):204-206.
[19]仝毅刚,李宁.新型石墨烯超级电容器的研制[J].西安工程大学学报,2016(3):333-339.