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Communication engineering and systems, telecommunications
A compact folded meander-line monopole for smart metering and M2M applications is presented. It operates over a tunable frequency range of 412-475 MHz. The miniaturization is based on a double-sided meandering structure and the rear positioning of the feeding and shorting strips. A sliding via connector is used for tuning. The proposed antenna is compact 15 mm (0.02 λ0) × 42.3 mm (0.058 λ0), low cost and easily fabricated. A 21-24% total efficiency was provided across the tunable band. Installed performance was evaluated in a meter housing placed on a concrete wall. Measured and simulated results are provided.
Loutridis, A., John, M., & Ammann, M. J. (2016) Folded Meandered Monopole for Emerging Smart Metering & M2M Applications in the Lower UHF Band, IEEE Antennas & Propagation Magazine, vol. 58, no. 2, pp. 60-65, 2016.