Identifying RF-DNA instances via phase differences

We developed a simple experimental testbed to collect statistical properties of the proposed RF-DNA system. It consisted of a manufactured prototype of the 5 x 10 patch antenna matrix proposed and eight benchmark RF-DNA instances manufactured using gauge-22 copper wire and DragonSkin as a plastic substrate that fixed the randomized topology of the wire once for all. The instances are illustrated. Their cost is low; each instance that we manufactured in the lab cost us less than a cent.