This antenna is Celluteq's CE1100-N20 horn antenna. The key specifications are as follow.

Frequency range: 8.20GHz - 12.40GHz

Waveguide type: WR-90

Norminal Gain: 20dB

Nominal Beamwidth: 18 degree

VSWR: <1.5

Connector: N-F

Dimension: 107mm x 138mm x 245mm (4.2in x 5.4in x 9.6in)

Other models of horn antennas are also available, contact Celluteq Electronics for details.