Research Article
Dual-Dipole UHF RFID Tag Antenna with Quasi-Isotropic Patterns Based on Four-Axis Reflection Symmetry
Figure 1
Radiation patterns of tag antenna with four-axis reflection symmetry and non-four-axis reflection symmetry.
|
(a) Four-axis reflection symmetry |
|
|
(b) Non-four-axis reflection symmetry |
|