A compact coplanar waveguide (CPW)-fed band-notched ultra-wideband (UWB) multiple-input multiple-output (MIMO) flexible antenna on liquid crystal polymer (LCP) substrate is designed. It is composed of two orthogonal elements, tampered feeder and asymmetric ground plate. To improve the port isolation (S₂₁), an inverted F-shaped branch is added. The measurement results demonstrate that the antenna has achieved impedance bandwidths (S₁₁< −10 dB) of 890 MHz (2.4–11.3 GHz) except one rejected band of 3.1–4.3 GHz, and the port isolation is higher than 23 dB. The influence of human body and bending have also been experimented. The results show that the designed antenna has satisfactory bandwidth, high isolation, sound gain in working bands, the characteristics of flexibility and low specific absorption ratio (SAR) values, which indicate the excellent application in the WBAN systems.

在液晶聚合物（LCP）基板上设计了紧凑的共面波导（CPW）馈送的带槽超宽带（UWB）多输入多输出（MIMO）柔性天线。它由两个正交元素组成，即篡改的馈线和不对称的接地板。为了改善端口隔离（S ₂₁），增加了倒F形分支。测量结果表明，天线已达到阻抗带宽（S ₁₁890 MHz（2.4-11.3 GHz）的<-10 dB），除了一个拒绝的3.1-4.3 GHz频段，而且端口隔离度高于23 dB。还对人体和弯曲的影响进行了实验。结果表明，所设计的天线具有令人满意的带宽，高隔离度，工作频带内的声音增益，柔韧性和低比吸收率（SAR）值的特点，这表明在WBAN系统中具有出色的应用。