International Journal of Antennas and Propagation

Research Article

Illustration of the Impedance Behaviour of Extremely Low-Profile Coupled Shorted-Patches Antennas for UHF RFID of People

Figure 6

Tuning the real and imaginary parts of the input impedance by varying the width of the coupling gap.
712790.fig.006a
(a)
712790.fig.006b
(b)