Table 12.

Performance and cost comparison of chipless RFID tag readers [132].

Reference	Operating Bandwidth	Reader System	Cost (Approx.)	Background Calibration
[43]	5–20.5 GHz	VNA-based	>$3000	yes
[132]	2–2.5 GHz	VCO	$120	no
[133]	4–8 GHz	IR-UWB	<$650	no
[134]	3.1–10.6 GHz	IR-UWB	<$2500	no
[135]	2.4–3.4 GHz	VCO	<$1000	yes