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2024-11-10
Flexible Ring Slot Antenna for Optimized 5G Performance in N77 and N78 Frequency Bands for Wearable Applications
By
Progress In Electromagnetics Research C, Vol. 150, 47-55, 2024
Abstract
The growth of 5G communications has created a demand for advanced wearable and flexible antennas due to supporting the high speeds, low latency, and capability of mechanical deformation conditions such as bending and conformability. In this paper, the design and analysis of a defected ground structure (DGS)-based ring slot antenna for N77 (3.3-4.2 GHz) and N78 (3.3-3.8 GHz) frequency bands is demonstrated. The antenna is made of an RT/Duroid 5880 substrate and has a loss tangent (tanδ) of 0.0009 and dielectric constant (εr) of 2.2. A DGS-based ring slot microstrip antenna is simulated, tested and experimentally characterized on different body locations (leg, chest, and hand) along with bending, and their results are presented accordingly. The magnitude of S11 (|S11|) of the proposed antenna is -26.81 dB at resonant frequency of 3.45 GHz, with the impedance bandwidth of 22 MHz (3.486 GHz to 3.508 GHz), peak gain of 6.27 dBi, and radiation efficiency of 85.02%. The simulated specific absorption rate (SAR) for 1 g and 10 g human body tissues is 0.263 W/Kg and 0.076 W/Kg, respectively. The total volume of the antenna is 0.58λ0 × 0.58λ0 × 0.00595λ0 (at 3.5 GHz). The proposed antenna is suitable for 5G wearable devices.
Citation
Gaurav Kumar Soni, Dinesh Yadav, Ashok Kumar, Chanchal Sharma, and Manish Varun Yadav, "Flexible Ring Slot Antenna for Optimized 5G Performance in N77 and N78 Frequency Bands for Wearable Applications," Progress In Electromagnetics Research C, Vol. 150, 47-55, 2024.
doi:10.2528/PIERC24090702
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