A micro strip patch antenna with multiple parasitic patches for Cognitive Radio Network applications is presented to enhance the bandwidth. Multiple resonances are used for the design of antenna, with a view to broaden bandwidth. A modified Koch Fractal antenna is imprinted from micro strip radiating patch. A Parasitic Strip line helps to grasp micro hertz communication through antenna. A slotted patch energized by a gap feed was established before with a large angular coverage over a bandwidth of 13.1%. In this paper, it is proposed that multiple parasitic patches are potential for cognitive radio applications where circular patch (CP) covers bandwidth of 85% with radiation pattern for Spectrum Utilization (SU) and CP with meander lines feeding behaves as communication antenna operating at Wireless Local Area Network 802.11y (3.637 GHz). The transceiver in a communication network is powered by Proposed Antenna, to acquire improved energy efficiency of 95.7%. Thus, throughput and SU have been improved, a model of antenna has been fabricated and its radiation patterns, return losses were achieved which shows fine consistency with simulated results.

提出了一种用于认知无线电网络应用的具有多个寄生贴片的微带贴片天线，以增强带宽。为了扩大带宽，多重谐振被用于天线的设计。改良的Koch Fractal天线上印有微带辐射贴片。寄生带状线有助于掌握通过天线的微赫兹通信。在通过间隙馈电激励的开槽贴片之前，已经建立了覆盖13.1％带宽的大角度覆盖范围。在本文中，提出了多种寄生贴片对于认知无线电应用是潜在的，其中圆形贴片（CP）覆盖85％的带宽，具有频谱利用率（SU）的辐射方向图，而具有曲折线馈电的CP充当在无线网络上工作的通信天线局域网802.11y（3.637 GHz）。通信网络中的收发器由拟议天线供电，可提高95.7％的能效。因此，吞吐量和SU得以改善，天线模型得以制造，其辐射方向图，回波损耗得以实现，与仿真结果具有很好的一致性。