A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations

<table>Near-field measurement. (a) Schematic view. (b) Read width at <svg height="12.175" id="M25" style="vertical-align:-3.56265pt" version="1.1" viewbox="0 0 19.475 12.175" width="19.475" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> mm. (c) Test scene. (d) Impinj UHF button.</table>

International Journal of Antennas and Propagation

fig7

Figure 7

Figure 7: A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations 