Design and Analysis of Dual-Band Microstrip Patch Antennas for Wireless Communication Applications

Abstract

Three dual-band microstrip patch antennas operating at 1.8 GHz and 2.1 GHz, 1.8 GHz, and 2.5 GHz, and 2.1 GHz and 2.5 GHz are designed and analyzed in this article. These frequency bands are important for Wi-Fi, LTE, and GSM, among other wireless communication applications. The suggested antennas’ compact size and multiband performance make them perfect for incorporation into RFID technologies, Internet of Things (IoT) devices, and mobile communication systems. The antenna designs utilize a Fr4 substrate due to its low dielectric constant (4.4) and low loss tangent, ensuring reduced signal loss and enhanced performance at high frequencies. The antennas are lightweight and small, measuring 80*80 mm overall and 1.65 mm in thickness. This makes them ideal for modern communication equipment with little space. The developed antennas offer excellent impedance matching across all desired frequency bands, as demonstrated by the simulation results. Values below −10 dB at each operating frequency are indicated by the S-parameter results, specifically, the reflection coefficient (S11), indicating minimum reflection and effective power transmission. These features show how effective the antennas are and how well they perform with multiband applications like Wi-Fi, cellular networks, and Internet of Things connectivity.