In this research paper, a isosceles triangular radiating patch with two triangular coplanar parasitic elements has been used to design a compact circularly polarized (CP) microstrip patch antenna that can be used for (2.320‐2.345 GHz) satellite digital audio radio systems (SDARS), (2.30‐2.39 GHz) wireless broadband (WiBro), LTE 2300 (2.3‐2.4 GHz), and WIMAX (2.50‐2.69 GHz) application band. Corners of the two parasitic element along with a portion of driver patch has been cut and optimize to obtain CP characteristics of the antenna with broadside radiation pattern. A slot is also introduced and optimized on the radiating patch to improve the impedance matching. Frequency band generated by the antenna is (2.09‐2.64 GHz) having impedance bandwidth of (S₁₁ ≤ −10 dB) 550 MHz 23.25% and two 3‐dB axial ratio (AR) bandwidth of 5.1% (2.29‐2.41GHz) and 1.54% (2.58‐2.62 GHz). The size of proposed antenna is 56 × 52 × 3.2 mm³ in which, FR4 material has been used as dielectric substrate and thin copper plate as radiating patch and ground. Before physical fabrication, HFSS ver13 software has been used to design and analyzed the proposed antenna. It has been found that the measured results of fabricated antenna and simulated results are closely matching.

中文翻译：

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紧凑的圆极化等腰三角形微带贴片天线，带有寄生元件，可用于多频带应用

在本研究论文中，具有两个三角形共面寄生元件的等腰三角形辐射贴片已被用于设计紧凑的圆极化（CP）微带贴片天线，可用于（2.320-2.345 GHz）卫星数字音频无线电系统（SDARS） ，（2.30-2.39 GHz）无线宽带（WiBro），LTE 2300（2.3-2.4 GHz）和WIMAX（2.50-2.69 GHz）应用频段。两个寄生元件的角以及一部分驱动器贴片已被切掉并进行了优化，以获得具有宽边辐射方向图的天线的CP特性。还引入了一个插槽，并在散热片上对其进行了优化，以改善阻抗匹配。天线产生的频带为（2.09-2.64 GHz），阻抗带宽为（S ₁₁ ≤-10 dB）550 MHz为23.25％，两个3 dB轴向比率（AR）带宽分别为5.1％（2.29-2.41GHz）和1.54％（2.58-2.62 GHz）。拟议的天线尺寸为56×52×3.2 mm ³，其中FR4材料用作介电基板，薄铜板用作辐射贴片和地面。在物理制造之前，已经使用HFSS ver13软件来设计和分析所建议的天线。已经发现，制造天线的测量结果与模拟结果非常接近。