Cheap UHF RFID Reader Antenna UHF GEN 2

Specification

Model

VA-91D

Electrical performance

Dimension(mm)

45(L)*45(W)*5(H) mm

Frequency range

905.0MHz-925.0MHz

Central frequency(MHz)

915.0MHz

Bandwidth

20MHz

VSWR

1.5 Max

Gain

5 dBi

Axial ratio

3.0 db Max

Polarization

Circular

Input impedance

50±5.0

Frequency thermal factor

20max

Environment Performance

High temperature properties

Stay in thermo stated container (100°C±5°C) for 24±1 hours, then test after 1 or 2 hours at room temperature

Low temperature properties

Stay in cryogenic(-40°C±3°C) for 24±2 hours, then test it after 1 or 2 hours at room temperature

Temperature cycle

Stay in -40°C environment for half hour and then keep it in 100°C environment for half hour, repeat 6 times, then test it after 1 or 2 hours at room temperature

Anti-vibration

vibration frequency:10~55HZ;amplitude 1.5mmVibration  2hours Along with X ,Y,Z axis direction, then test

Heat resistance characteristics

Stay in the box (Temperature: 45°C±2°C,Humidity: 90~95%) for 96 hours, then test it after 1 or 2 hours at room temperature

Drop test

30cm height; X, Y, Z 3aspects; free drop to wood floor, 4times.

Structure and material analysis

Antenna Material

Ceramic

Pin

Copper tin alloy

Electrode

silver plating

Ground plane

silver plating