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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >High isolation, proximity-fed monostatic patch antennas with integrated self-interference cancellation-taps for ISM band full duplex applications
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High isolation, proximity-fed monostatic patch antennas with integrated self-interference cancellation-taps for ISM band full duplex applications

机译：具有ISM频段全双工应用的集成自干扰消除分布的高隔离，接近的单体贴片天线

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摘要

This work presents two dual polarized proximity-fed monostatic patchantennas with improved interport isolation for 2.4 GHz industrial, scientificand medical band same frequency full duplex wireless applications. The presentedantennas achieves the high interport decoupling through intrinsic isolationof the polarization diversity in conjunction with a simple single-tap andtwo-taps self-interference cancellation (SIC) topologies. The polarization diversityisolation is achieved through two perpendicular microstrip feeds for proximityfeeding to excite orthogonal polarization mode for transmit (T_x) andreceive (R_x) modes. The prototype for proposed antenna with integratedsingle-tap and two-taps SIC circuit is tested to record its interport isolation,impedance bandwidths and gains for both Tx and Rx ports. The implementedantenna with single-tap SIC circuit demonstrates 10 dB return-loss bandwidthof ≥100 MHz for both T_x and R_x ports. The measured isolation exceeds 40 dBover the 40 MHz bandwidth. Moreover, the recorded peak isolation is betterthan 74 dB for implemented antenna prototype. Furthermore, the 40 MHzbandwidth with 40 dB isolation can be tuned with the help of SIC-tap as demonstratedthrough the experimental results. The measured gain levels arearound 4.6 dBi for both T_x and R_x port. The same antenna structure with integratedtwo-taps SIC topology features better than 55 dB isolation within 10 dBreturn loss bandwidth of 100 MHz. The peak isolation exceeds 97 dB and isolationlevels are better than 60 and 80 dB over 50 and 20 MHz bandwidths,respectively, for presented antenna with two-taps SIC configuration. The compactantenna offers comparatively wider impedance and isolation bandwidthwith improved SIC levels compared to previous designs.
机译：这项工作提出了两个双极化的接近喂养单体贴片具有改进的Interport隔离的天线2.4 GHz工业，科学和医用带相同的频率全双工无线应用。提出天线通过内在隔离实现高Interport解耦与简单的单点水龙头和简单的单击和偏振分集双点自干扰取消（SIC）拓扑。偏振变化通过两个垂直的微带进料来实现隔离，用于接近馈送到Excite正交偏振模式的发送（T_X）和接收（R_X）模式。具有集成的提出天线的原型测试单次轻拍和双点SIC电路以记录其Interport隔离，TX和RX端口的阻抗带宽和增益。实施的具有单击SIC电路的天线演示了10个DB回波损耗带宽两个T_X和R_X端口≥100MHz。测量的隔离超过40 dB超过40 MHz的带宽。此外，记录的峰值隔离更好对于实现的天线原型而不是74 dB。此外，40 MHz可以在SIC水龙头的帮助下进行40 dB隔离的带宽，如SIC-TAP所示通过实验结果。测量的增益水平是T_X和R_X端口约为4.6 DBI。相同的天线结构，集成双点SiC拓扑功能优于55 dB隔离10 dB返回损耗带宽为100 MHz。峰值隔离超过97 dB和隔离水平优于60和80 dB超过50和20 MHz的带宽，分别为具有双点微型配置的呈现天线。紧凑天线提供相对更广泛的阻抗和隔离带宽与以前的设计相比，改善了SIC水平。

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