4.5 Novel Reverse Design Method of Tag Antenna Based on Image Analysis
149
Fig. 4.28 Changes of impedance with the impedance loop length
return loss changes. When b is 12 mm, the loss is minimal. When b changes, the loss
slightly changes, but the center frequency is basically unchanged. The performance
of the antenna changes relatively little.
(4) Analysis of the influence of the impedance matching loop line width w on
antenna performance.
149
Fig. 4.28 Changes of impedance with the impedance loop length
return loss changes. When b is 12 mm, the loss is minimal. When b changes, the loss
slightly changes, but the center frequency is basically unchanged. The performance
of the antenna changes relatively little.
(4) Analysis of the influence of the impedance matching loop line width w on
antenna performance.