A printed compact wideband circularly polarized bowtie slot antenna (WCPBSA) is proposed and presented for wireless body area network (WBAN) applications. The proposed FR4 dielectric based compact antenna has been designed by etching a wide bowtie shaped slot in the ground plane along with a pair of thin slits inserted in the ground plane. The proposed slot antenna is excited by a 50 Ω feedline with dual horizontal stepped stubs, protruding in opposite directions in the slot, which excites dual orthogonal modes to achieve a wide simulated 3-dB axial ratio bandwidth (ARBW) of 48.14% in 4.1 – 6.7 GHz frequency band with approximately identical 10 dB return loss (RL) bandwidth. The proposed WCPBSA is also experimentally verified on human body and observed to be of low specific absorption rate (SAR) value of 0.975 W/kg over 10 g of human tissues and a measured gain of 4.1 dBi at frequency 5.8 GHz. Then proposed WCPBSA of size 20 × 20 × 0.8 mm³ is designed, fabricated and the measured results are verified and validated with simulated results.

提出并提出了一种用于无线人体局域网（WBAN）应用的印刷紧凑型宽带圆极化领结缝隙天线（WCPBSA）。所提出的基于FR4电介质的紧凑型天线是通过蚀刻接地平面中的宽领结形槽以及插入接地平面中的一对细缝而设计的。拟议中的缝隙天线由一条带有双水平阶梯状短截线的50Ω馈线激励，在缝隙中以相反的方向突出，这激发了双重正交模式，从而在4.1中获得了48.14％的48.14％的宽模拟3dB轴向比率带宽（ARBW） 6.7 GHz频带，回波损耗（RL）带宽大致相同。拟议的WCPBSA还在人体上进行了实验验证，观察到的低比吸收率（SAR）值为0。在10 g人体组织上为975 W / kg，在5.8 GHz频率下测得的增益为4.1 dBi。然后建议使用尺寸为20×20×0.8 mm的WCPBSA^图3的设计，制造和测量结果均通过仿真结果进行了验证和验证。