A Circularly Polarized T-Shaped Patch Antenna for Wireless Communication Application

2018 IEEE Indian Conference on Antennas and Propogation (InCAP) Pub Date : 2018-12-01 DOI:10.1109/INCAP.2018.8770806

R. Dhara, S. Kumar Jana, M. Mitra, A. Chatterjee

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引用次数: 8

Abstract

The present study is related to a Dual-band circularly-polarized (CP) microstrip patch antenna consisting of a single T-shaped radiating patch which consists of a square loop slot on the opposite side of the substrate, and two slotted stubs placed across the diagonal line of the square loop. This configuration is considered for axial ratio bandwidth (ARBW) enhancement. In order to increase the impedance bandwidth (IBW) by a significant amount, the proper dimension of T-shaped has been used. The structure leads to three notches (at <−10 dB) of the bandwidths of 1.32 GHz (8.48-9.78 GHz), 0.71 GHz (10.99–11.7 GHz), and 5.43 GHz (12.21–17.64 GHz) with the corresponding simulated center frequencies of 9.1 GHz, 11.3 GHz, 15.9 GHz respectively. The measured IBW below −10 dB are 7.54-7.98 GHz, 8.74-9.557 GHz, 12.42-14.97 GHz, 16.16 GHz – beyond 20 GHz (as beyond 20 GHz the IBW cannot be measured using our specified VNA). The ARBW are 301 MHz $(\mathbf{f}_{\mathbf{c}}=9.5\ \mathbf{GRz}, 3.17\ \%)$ I and 462 MHz $(\mathbf{f}_{\mathbf{c}}=13.1\ \mathbf{GRz},\ 3.53\%)$ within the range of simulated and measured impedance bandwidth curve. The maximum simulated peak gain is 2.02 dBi at 11.3 GHz. Proposed antenna happens to be suitable for ‘X’ and ‘K’ band wireless communication application.

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一种用于无线通信的圆极化t形贴片天线

本研究涉及一种双频圆极化(CP)微带贴片天线，该天线由一个t形辐射贴片组成，该贴片由衬底对面的方形环路槽和放置在方形环路对角线上的两个槽桩组成。这种配置被认为是为了增强轴比带宽(ARBW)。为了大幅度提高阻抗带宽(IBW)，采用了适当的t形尺寸。该结构导致了1.32 GHz (8.48-9.78 GHz)、0.71 GHz (10.99-11.7 GHz)和5.43 GHz (12.21-17.64 GHz)带宽的三个缺口(< - 10 dB)，相应的模拟中心频率分别为9.1 GHz、11.3 GHz和15.9 GHz。−10 dB以下的IBW测量值分别为7.54 ~ 7.98 GHz、8.74 ~ 9.557 GHz、12.42 ~ 14.97 GHz、16.16 GHz—超过20 GHz(因为超过20 GHz的IBW无法使用我们指定的VNA测量)。在模拟和实测阻抗带宽曲线范围内，ARBW分别为301 MHz $(\mathbf{f}_{\mathbf{c}}=9.5\ mathbf{GRz}， 3.17%)$ I和462 MHz $(\mathbf{f}_{\mathbf{c}}=13.1\ mathbf{GRz}， 3.53%)$。在11.3 GHz时，最大模拟峰值增益为2.02 dBi。所提出的天线恰好适用于“X”和“K”波段无线通信应用。

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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2018 IEEE Indian Conference on Antennas and Propogation (InCAP)

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