Alam Md Mottahir, Azim Rezaul, Sobahi Nebras M, Khan Asif Irshad, Islam Mohammad Tariqul
Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
Department of Physics, University of Chittagong, Chittagong, 4331, Bangladesh.
Sci Rep. 2022 May 9;12(1):7584. doi: 10.1038/s41598-022-11679-7.
A miniature planar antenna is a vital component of any portable wireless communication device. The antenna in portable devices should provide wide/multiple operating bands to cover a good number of narrowband services as a multi-band antenna not only reduces the number of antennas but also lessens the system complexity, cost, and device size. To operate over S-, C-, WiMAX, WLAN, UWB, and X-communication bands, in this paper, a dual-band CPW-fed antenna is presented. The anticipated antenna is made up of a vertical bow-tie-shaped patch and two asymmetric ground planes and etched on the same side of the single-sided standard substrate material. To generate two distinct operating bands, an inverted L-shaped parasitic element is inserted within the modified U-shaped coplanar ground plane. The antenna achieved dual operating bands of 3.24-8.29 GHz and 9.12-11.25 GHz in measurement which helps the proposed antenna to cover S-, C-, WiMAX, WLAN, 4G LTE, 5G sub-6 GHz, UWB, and X-communication bands. In the two operating bands, the antenna realized a peak gain of 4.33 dBi, and 4.80 dBi, the maximum radiation efficiency of 86.6%, and 72.6%, and exhibits symmetric radiation patterns. In the operating bands, the antenna also exhibits good time-domain behavior which helps it to transmit the signal with minimum distortion.
微型平面天线是任何便携式无线通信设备的关键组件。便携式设备中的天线应提供宽/多个工作频段，以覆盖大量窄带服务，因为多频段天线不仅减少了天线数量，还降低了系统复杂性、成本和设备尺寸。为了在S波段、C波段、WiMAX、WLAN、超宽带（UWB）和X通信频段上工作，本文提出了一种双频段共面波导馈电天线。预期的天线由一个垂直蝴蝶结形贴片和两个不对称接地平面组成，并蚀刻在单面标准基板材料的同一侧。为了产生两个不同的工作频段，在改进的U形共面接地平面内插入了一个倒L形寄生元件。该天线在测量中实现了3.24 - 8.29 GHz和9.12 - 11.25 GHz的双工作频段，这有助于该天线覆盖S波段、C波段、WiMAX、WLAN、4G LTE、5G低于6 GHz频段、超宽带和X通信频段。在这两个工作频段中，该天线实现了4.33 dBi和4.80 dBi的峰值增益，最大辐射效率分别为86.6%和72.6%，并呈现出对称的辐射方向图。在工作频段中，该天线还表现出良好的时域特性，这有助于它以最小的失真传输信号。
