Multiband circularly-polarized stacked elliptical patch antenna with eye-shaped slot for GNSS applications

IF 1.4 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Microwave and Wireless Technologies Pub Date : 2024-04-11 DOI:10.1017/s175907872400045x

Ahmad Abdalrazik, Ahmed Gomaa, Asmaa Afifi

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引用次数: 0

Abstract

This paper introduces a tri-band stacked elliptical patch antenna featuring a right-handed circular polarized, designed to operate at the L2, L5, and L1 Global Navigation Satellite System bands. Initially, an elliptic patch is constructed and fed by a probe feed to generate TM110 and TM210 modes at resonance frequencies calculated using Mathieu functions. The probe position is precisely adjusted to excite the quasi-orthogonal mode of TM110 to generate circularly polarized (CP) waves at the L2 and L5 bands. Subsequently, an eye-shaped aperture is engraved into the elliptical patch to enhance the axial ratio (AR) beamwidth in the L2 and L5 bands and stimulate the orthogonal mode of TM210 to produce CP waves at the L1 band. Lastly, a stacked partially elliptical parasitic element is placed beneath the upper slotted elliptical patch to enhance the orthogonality of TM210 surface current versions and thus improve the AR beamwidth at the L1 band. The proposed antenna shows low reflection coefficient values at 1.12–1.33 (L2/L5), and 1.5–1.66 GHz (L1). The AR beamwidths are 133/213∘, 167/163∘, and 36/103∘ at two orthogonal cutplanes at L5, L2, and L1 bands, respectively. The antenna also has decent gains of 6–6.9 dBic across the three bands.

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用于 GNSS 应用的带眼形插槽的多频带圆极化叠层椭圆贴片天线

本文介绍了一种三波段叠层椭圆形贴片天线，采用右手圆极化，设计用于在 L2、L5 和 L1 全球导航卫星系统波段工作。首先，构建一个椭圆形贴片，并通过探针馈电产生 TM110 和 TM210 模式，共振频率通过马修函数计算得出。对探针位置进行精确调整，以激发 TM110 的准正交模式，从而在 L2 和 L5 波段产生圆偏振（CP）波。随后，在椭圆形贴片上雕刻一个眼形孔，以增强 L2 和 L5 波段的轴向比 (AR) 波束宽度，并激发 TM210 的正交模式，在 L1 波段产生 CP 波。最后，在上部开槽椭圆形贴片下方放置了一个堆叠的部分椭圆形寄生元件，以增强 TM210 表面电流版本的正交性，从而改善 L1 波段的 AR 波束宽度。拟议的天线在 1.12-1.33 (L2/L5) 和 1.5-1.66 GHz (L1) 频段显示出较低的反射系数值。在 L5、L2 和 L1 波段的两个正交切面上，AR 波束宽度分别为 133/213∘、167/163∘ 和 36/103∘。该天线在三个频段的增益也相当可观，分别为 6-6.9 dBic。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Microwave and Wireless Technologies ENGINEERING, ELECTRICAL & ELECTRONIC-TELECOMMUNICATIONS

CiteScore

3.50

自引率

7.10%

发文量

130

审稿时长

6-12 weeks

期刊介绍： The prime objective of the International Journal of Microwave and Wireless Technologies is to enhance the communication between microwave engineers throughout the world. It is therefore interdisciplinary and application oriented, providing a platform for the microwave industry. Coverage includes: applied electromagnetic field theory (antennas, transmission lines and waveguides), components (passive structures and semiconductor device technologies), analogue and mixed-signal circuits, systems, optical-microwave interactions, electromagnetic compatibility, industrial applications, biological effects and medical applications.