用于ISM波段射频能量采集的宽波束宽圆极化椭圆微带天线

Madhuri Sahal, V. Tiwari, D. Bhatnagar
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引用次数: 0

摘要

提出了一种同轴馈电圆极化椭圆微带天线,用于采集ISM波段的射频能量。在椭圆微带天线中嵌入方形槽,引起电流扰动。通过优化方槽的位置和尺寸,产生圆极化所需的两种正交简并模态。沿边界对角线放置的v形狭缝影响谐振频率。所提出的设计具有模拟10db阻抗带宽等于100 MHz (2.43 GHz-2.53 GHz),而3db AR带宽为20 MHz (2.45-2.47 GHz)。该天线的仿真增益约为3.35 dB。该设计产生了宽的AR波束宽度,e面为160度,h面为200度。整体天线尺寸为$50\ \mathbf{mm}乘以50\mathbf{mm}乘以1.6\ \mathbf{mm}\ (0.41\ \boldsymbol{\lambda}_{0}\乘以0.41\boldsymbol{\lambda}_{0}\乘以0.013\ \boldsymbol{\lambda}_{0})$。该天线适用于ISM频段,用于从附近的WiFi、蓝牙设备收集射频能量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Circular Polarized Elliptical Microstrip Antenna with Wide Beamwidth for ISM Band RF Energy Harvesting
A coaxial-fed elliptical microstrip antenna having circular polarization is presented for harvesting RF energy in the ISM band. A square-shaped slot is embedded in the elliptical microstrip antenna which causes current perturbation. The position and dimension of the square slot are optimized to generate the two orthogonal degenerate modes required for circular polarization. V-shaped slits that are placed diagonally along the boundary affect the resonant frequency. The proposed design has a simulated 10-dB impedance bandwidth equal to 100 MHz (2.43 GHz-2.53 GHz) whereas 3-dB AR bandwidth is 20 MHz (2.45-2.47 GHz). The simulated gain of proposed antenna is around 3.35 dB. The design generates a wide AR beam width of 160 degrees in E-plane and 200 degrees in H-plane. The overall antenna dimensions are $50\ \mathbf{mm}\times 50\mathbf{mm}\times 1.6\ \mathbf{mm}\ (0.41\ \boldsymbol{\lambda}_{0} \times 0.41\boldsymbol{\lambda}_{0}\times 0.013\ \boldsymbol{\lambda}_{0})$. The antenna is suitable for use in ISM band for RF energy harvesting from nearby WiFi, Bluetooth devices.
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