High-Q Slot Resonator Used in Chipless Tag Design

A retransmission chipless tag with multiple U-shaped slot resonators is proposed to cut down the cost of traditional tags chips. Multiple side-by-side structures different lengths are printed on microstrip line, and two terminals line connected correspondingly orthogonal ultra-wideband (UWB) transceiver antennas form tag. The resonator has high Q values narrow impedance bandwidth. bandwidth that each adds protection 300 MHz. Several 6-bit coding designed fabricated for comparison measurement. Results show simulation measurement in agreement. width distance between reduced, resulting deepened spectrum notch depth resonator. Decreasing dielectric constant substrate or increasing thickness increases