A micro strip patch antenna (MPA) is fabricated to increase the bandwidth. The communication systems want antennas with high directivity, high signal strength and gain. In this paper, spectrum underlay finite element line feeding technique (SUFELF) is proposed to design MPA's are potential for cognitive radio applications (CRA). The proposed SUFELF is designed and simulated by using HFSS-14, simulation and calculated results of SUFELF for S-band is compared. The proposed SUFELF construction can discover a lot of applications in designs for S band, efficient spectrum utilization in cognitive radio networks (CRN). To improve gain, The MPA with circular patch (CP) was fabricated through SUFELF. This design can carry out a gain of 4.21 dBi, and percentage of impedance bandwidth is 85.2% at 3.546 GHz. A SUFELF model has made-up and calculated, the results have revealed a excellent concurrence by means of the simulations. To obtain efficiency of 95.9% the Proposed Antenna (PA) is powered. We conclude this work with a discussion on the expansion to the coexistence with different patch antennas.

制造微带贴片天线 (MPA) 以增加带宽。通信系统需要具有高方向性、高信号强度和增益的天线。在本文中，频谱底层有限元线馈送技术 (SUFELF) 被提议用于设计具有认知无线电应用 (CRA) 潜力的 MPA。使用HFSS-14对所提出的SUFELF进行了设计和仿真，比较了S波段SUFELF的仿真和计算结果。所提出的 SUFELF 结构可以在 S 波段设计、认知无线电网络 (CRN) 中的高效频谱利用中发现许多应用。为了提高增益，通过 SUFELF 制造了带有圆形贴片 (CP) 的 MPA。该设计可实现4.21 dBi的增益，3.546 GHz时阻抗带宽百分比为85.2%。SUFELF 模型已经建立和计算，通过模拟，结果显示出极好的一致性。为了获得 95.9% 的效率，建议的天线 (PA) 需要供电。我们通过讨论扩展到不同贴片天线的共存来结束这项工作。