<p>For 27 tags, 1D frequency scanning is done and it's virtually converted to 2D as per <strong>Section V</strong> of the article</p>
<p>L. M. Arjomandi, G. Khadka and N. C. Karmakar, "<strong>mm-Wave Chipless RFID Decoding: Introducing Image-Based Deep Learning Techniques</strong>," in <em>IEEE Transactions on Antennas and Propagation</em>, vol. 70, no. 5, pp. 3700-3709, May 2022, <strong>doi: 10.1109/TAP.2021.3137197</strong></p>