SMA Dummy Load is needed to terminate the UN-used polarization, can be found here

Specification:

• Net weight: 20.5g
• Color: Red

Feature:

• Center frequency: 5.8 GHz
• Bandwidth: 660 MHz (5.47 – 6.13 GHz)
• Matching: S11 < -20 dB, VSWR < 1.22 (at center frequency)
• Axial ratio: < 1.3
• Antenna gain: 9.4 dBi
• Half power beam width: 55° (horizontal and vertical)
• Radiation efficiency: 83.5%
• Good radiation efficiency. Most FR4-based patches have terrible efficiency because FR4 is very lossy at 5.8 GHz.
• Good axial ratio, not just directly perpendicular to the patch but also off-center.

Package Included:

1 X 5.8 GHz 9.4dBi Triple Feed Patch antenna

1x Semi Rigid SMA cable