5g微带阵列天线汇总

5G微带阵列天线要求：利用介质常数为2.2,厚度为1mm,损耗角为0.0009的介质，设计一个工作在5G的4X4的天线阵列。评分标准：良：带宽〈7%优：带宽〉7%且效率大于60%1微带辐射贴片尺寸估算设计微带天线的第一步是选择合适的介质基板，假设介质的介电常数为E，对于工作频率f的矩形微带天线，可以用下式设计出高效率辐射贴片的宽度W，即为：c/+1、_1w=—(— )2f2式中，c是光速，辐射贴片的长度一般取为九/2；这里九是介质内的导波波长，即为： ’ ‘九二—c=6f表e考虑到边缘缩短效应后，实际上的辐射单元长度L应为:_2AL式中，8是有效介电常数，AL是等效辐射缝隙长度。它们可以分别用下式计算，即为：：AL=0.412h(、+°.3)(w/h+°.264)(8e_0.258)(w/h+0.8)2.单元的仿真由所给要求以及上述公式计算得辐射贴片的长度L=19.15mm,W=23.72mm。采用非辐射边馈电方式，模型如图1所示：

图1单元模型此种馈电方式，可以通过移动馈电的位置获得阻抗匹配，设馈电点距离上宽边的偏移量为dx,经仿真得到当dx=4mm时，阻抗匹配最好。另外，之前计算出的尺寸得到的谐振点略有偏移，经过仿真优化后贴片尺寸变为L=19mm,W=23.72mm。仿真结果图如图2，图3所示。Freq[GHz]图2S11参数10.005.000.00-5.00-10.00-15.00-20.00-200.00-150.00-100.00-50.00XYPlot2HFSSDes卿sOftCurveInfo dR(GaInTotal)Setup1:LastAdaptIveFreq='5GHz'Pii='0deg'10.005.000.00-5.00-10.00-15.00-20.00-200.00-150.00-100.00-50.00XYPlot2HFSSDes卿sOftCurveInfo dR(GaInTotal)Setup1:LastAdaptIveFreq='5GHz'Pii='0deg'dR(GalnTotal)Setupl:LastAdaptlveFreq=5GHzmi=y0aeg0.00Theta[deg]50.00100.00150.00200.00图3增益图从图中可以看出谐振点为5GHz,计算的相对带宽为2.2%,增益为5.78dB。2X2阵列设计设计馈电网络并组阵，模型图如图4所示。图42X2微带天线阵列HFSSDesignl--r,w-IDOName

mo.00XYPlot13-40.0079.00006.8066|2|4|30.00n-10.00G-20.00-30.001ANSOCurveInfo-dB(GainTotal)Setup1:LastAdaptiveFreq='5GHz'Rhi='0deg'.dB(GainTotal)Setup1:LastAdaptivecii-jnk:iccNz~>YY1.0000HFSSDesignl--r,w-IDOName

mo.00XYPlot13-40.0079.00006.8066|2|4|30.00n-10.00G-20.00-30.001ANSOCurveInfo-dB(GainTotal)Setup1:LastAdaptiveFreq='5GHz'Rhi='0deg'.dB(GainTotal)Setup1:LastAdaptivecii-jnk:iccNz~>YY1.000013.9625-57.00003.3614m2-90.0000・8.5636m3100.00 150.00 200.00-200.00 -150.00 -100.00-50.00 0.00 50.00Theta[deg]XYPlot12-20.00 111113.50 4.00 4.50 5.00 5.50 6.00 6.50Freq[GHz]图5S11参数由S11参数可以看到2X2阵列天线谐振点为5GHz,且此时的S11=-19dB,说明反射损耗小，匹配良好。相对带宽约为2.8%。

RadiationPattern2―HFSSDesignANpoFTRadiationPattern2CurveInfo-dB(GainTotal)

Setupl:LastAdaptive

Freq='5GHz'Pii='0deg'"dB(GainTotal)Setup1:LastAdaptiveFreq='5GHz'Pii-90deg'图6方向图由方向图可以看出2X2阵列天线的增益为13.96dB,第一副瓣电平为-10.6dB,可知组阵能使天线的增益变高。4X4阵列天线天线阵列如图7所示:图74X4阵列天线4.004.254.504.755.255.505.756.005.00Freq[GHz]图8S11参数Name曲.00XY

-3.000019.9638m232.00008805010.00二5.00二0.00二-5.00--10.004.004.254.504.755.255.505.756.005.00Freq[GHz]图8S11参数Name曲.00XY

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