The 4dBi wide gain four arm spiral circularly polarized antenna T707013 is a universal far-field antenna suitable for UHF RFID applications. It has the characteristics of small size, high gain, low standing wave, good directional symmetry, and low axial ratio. It can be conveniently applied to terminal applications such as UHF band RFID handheld devices.

IISpecification parameters

3、 HFSS simulation antenna characteristic curve:

（1）Gain versus frequency curve

（2）Axial ratio versus frequency curve

（3）Efficiency versus frequency curve

（4）H2D directional diagram (horizontal lobe directional diagram)

（5）E2D directional diagram of the plane (vertical lobe directional diagram)

（6）3Ddirection diagram

（7）Return lossS11Frequency dependent curve

（8）Voltage standing wave ratioVSWRFrequency dependent curve