A Strongly Miniaturized and Inherently Matched Folded Dipole Antenna for Narrowband Applications
Abstract
A novel miniaturized printed folded dipole antenna has been designed for narrowband sensing applications. It is shown that the antenna may be systematically engineered to achieve matching to a practical source impedance at frequencies well below its half-wavelength resonance using series-LC loading and asymmetrical arm widths. This approach is used to design an inherently well-matched antenna that does not require an external matching network and demonstrates approximately 75% miniaturization, excellent co- to cross-polarization separation, over 24 dB higher realized gain, and strongly improved radiation efficiency relative to an unloaded folded dipole of the same electrically small size. Experimental validation of a fabricated prototype demonstrates excellent agreement with simulations.
Keywords
Cite
@article{arxiv.1902.04745,
title = {A Strongly Miniaturized and Inherently Matched Folded Dipole Antenna for Narrowband Applications},
author = {Sanghamitro Das and David J. Sawyer and Nectaria Diamanti and A. Peter Annan and Ashwin K. Iyer},
journal= {arXiv preprint arXiv:1902.04745},
year = {2020}
}