A compact dual parallel slotted-patch antenna having a single offset feed on the corner side is presented. The antenna geometry comprises parallel and horizontal coupled S dual slotted structure at the top, with a complete ground plane at the bottom, which is oriented to enhance the multiband frequency bands. The patch is patterned on an FR4 substrate having a dielectric constant of 4.4 and loss tangent of 0.02. The antenna has overall dimensions of 36 × 28 × 1.6 mm³, with an offset feed which is optimized to achieve 50 Ω impedance matching. The proposed antenna is simulated using a FEM-based high-frequency structure simulator, after which it is optimized, fabricated, and measured, with the simulated and measured results showing good agreement. The proposed compact antenna resonates in the pentaband frequency range which includes 2.00–2.16 GHz local TV transmission, 3.14–3.23 GHz for radio-frequency identification and detection, and 4.34–4.61 GHz for long-distance radio telecommunications. The antenna shows good gain ranging from 0.5 to 3.5 dBi with omnidirectional and bidirectional radiation patterns, making it suitable for its use in wireless applications with space constraints.

提出了一种紧凑的双平行缝隙贴片天线，在角侧具有单偏置馈电。天线的几何形状在顶部包括平行和水平耦合的S双缝隙结构，在底部具有完整的接地平面，旨在增强多频带频段。在介电常数为4.4，损耗角正切为0.02的FR4基板上对贴片进行构图。天线的整体尺寸为36×28×1.6 mm ³，其偏置馈源经过优化可实现50Ω阻抗匹配。使用基于FEM的高频结构仿真器对拟议的天线进行仿真，然后对其进行优化，制造和测量，仿真结果与测量结果吻合良好。提议的紧凑型天线在五频带频率范围内产生谐振，该频率范围包括2.00–2.16 GHz本地电视传输，用于无线电频率识别和检测的3.14–3.23 GHz和用于长距离无线电信的4.34–4.61 GHz。该天线显示了从0.5到3.5 dBi的良好增益，并具有全向和双向辐射方向图，使其适合在空间受限的无线应用中使用。