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CPW-Fed Dual Band Flexible Antenna for Energy IoT Applications at 380/940 MHz | IEEE Journals & Magazine | IEEE Xplore

CPW-Fed Dual Band Flexible Antenna for Energy IoT Applications at 380/940 MHz


Antenna received power measurement setup

Abstract:

In this paper, we present the design and fabrication of a dual-band flexible antenna for energy Internet of Things (IoT) applications operating at 380 MHz and 940 MHz. Th...Show More

Abstract:

In this paper, we present the design and fabrication of a dual-band flexible antenna for energy Internet of Things (IoT) applications operating at 380 MHz and 940 MHz. The antenna features a coplanar waveguide (CPW) feed structure and a T-shaped monopole design on a polyimide substrate, with tapered stepped ground plane and square ring-shaped parasitic elements to minimize performance degradation due to bending. The antenna size is 210\times 236\times 0.2 mm3, achieving bandwidths of 25.2% ( 344\sim 440 MHz) and 15.2% ( 863\sim 1006 MHz) when flat, with peak gains of 2.52 dBi and 4.90 dBi, respectively. We evaluate the antenna’s performance under various bending conditions using cylindrical styrofoam structures with radii of 25, 35, 45 cm, and the bandwidth degradation is within 4%. To verify the realistic applicability in energy IoT applications, we perform performance analysis considering a transmission tower environment with a cylindrical metal structure having a diameter of 60 cm, ensuring that performance degradation is minimized at a distance of at least 5 cm from the metal structure. Link margin calculations for Korea Electric Power Corporation (KEPCO)’s IoT specifications demonstrate values of 34.08 dB at 380 MHz and 31.94 dB at 940 MHz, confirming the antenna’s suitability for KEPCO’s energy IoT applications. These results indicate that the proposed antenna meets the requirements for efficient operation in KEPCO’s IoT infrastructure.
Antenna received power measurement setup
Published in: IEEE Access ( Volume: 13)
Page(s): 24997 - 25007
Date of Publication: 04 February 2025
Electronic ISSN: 2169-3536

Funding Agency:


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