Highly Integrable Paper-Based Harmonic Transponder for Low-Power and Long-Range IoT Applications Article Swipe
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· 2017
· Open Access
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· DOI: https://doi.org/10.1109/lawp.2017.2768383
· OA: W2767080743
<p>In this letter, the design and performance analysis of a harmonic planar transponder on paper, which conjugates compactness and scalability, are presented. The tag, targeted for a fundamental frequency of 1.2 GHz, is based on a frequency doubler with a single lumped component (a low-barrier Schottky diode) and a system of nested tapered annular slot antennas. Both antennas, orthogonally placed, feature a maximum gain around 3 dBi. The frequency doubler is optimized for power levels in the order of -13 dBm, where it achieves a conversion loss of 15.7 dB. A complete prototype has been tested in a wireless indoor experiment, demonstrating a coverage of at least 4 m, insensitive to tag-to-reader rotations (transmitter effective isotropic radiated power 16 dBm).</p>