A Triangular Patch Antenna with a Trapezoidal Fractal with Two Sublayers with Complementary Layers

Subject Areas : Renewable energy

Mohammadreza Sepehri ¹ (Department of Electrical Engineering- Najafabad Branch, Islamic Azad University, Najafabad, Iran)
Mohammad Amin Honarvar ² (Digital Processing and Machine Vision Research Center- Najafabad Branch, Islamic Azad University, Najafabad, Iran)

Received: 2021-07-21 Accepted : 2021-11-11 Published : 2023-08-23

Keywords: antenna, microstrip technology, trapezoidal fractal, complementary layer,

Abstract :

In this paper, the improvement of the radiation pattern and the properties of multi-band trapezoidal fractal antenna with self-complementary layers have been investigated. The antenna is excited by a microstrip feed-line with two sub-layers to increase bandwidth and improve the radiation pattern. The dual-layered complementary arrangement has had positive effects on the resonance frequencies and improved the properties of the radiation patterns. This antenna offers a good efficiency, suitable bandwidth, and radiated pattern in a designed resonance frequency. Six bands (S11<-15 dB), with center frequencies of f1=0.9 GHz, f2=1.57 GHz, f3=1.85 GHz, f4=2.15 GHz, f5=2.5 GHz and f6=3.5 GHz are obtained within the band of (0.5-4) GHz. This antenna offers good efficiency which changes from 70% to 95%. The measurement results clearly confirm the simulation results

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