Model ATH33G50 Antenna, Standard Gain 33GHz–50GHz The Model ATH33G50 is a wide band, high gain, high power microwave horn antenna. With a minimum gain of 20dB over isotropic, the Model ATH33G50 supplies the high intensity fields necessary for RFI/EMI field testing within and beyond the confines of a shielded room. The Model ATH33G50 is extremely compact and light weight for ready mobility, yet is built tough enough for the extra demands of outdoor use and easily mounts on a rigid waveguide by the waveguide flange. Part of a family of microwave frequency antennas, the Model ATH33G50 provides the 33-50GHz response required for many often used test specifications. The Model ATH33G50 standard gain pyramidal horn antenna is electroformed to give precise dimensions and reproducible electrical characteristics. The Model ATH33G50 is used to measure gain for other antennas by comparing the signal level of a test antenna to the signal level of a test antenna to the standard gain horn and adding the difference to the calibrated gain of the standard gain horn at the test frequency. The Model ATH33G50 is also used as a reference source in dual-channel antenna test receivers and can be used as a pickup horn for radiation monitoring. SPECIFICATIONS FREQUENCY RANGE .................................................... 33-50GHz POWER INPUT (maximum) ............................................ 240 watts CW 2000 watts Peak POWER GAIN (over isotropic) ........................................ 20 ± 2dB VSWR Average ................................................................. 1.2:1 CONNECTOR .............................................................. WR 22 waveguide MOUNTING PROVISIONS ............................................. Waveguide flange SIZE (WxHxD) ................................................................ 4 x 3 x 9 cm (1.57 x 1.18 x 3.54 in) WEIGHT ....................................................................... 0.15 kg (0.33 lbs) 061909 160 School House Road Souderton, PA 18964-9990 • 215-723-8181 • www.ar-worldwide.com Page 1 of 2 ATH33G50 Field Strength at 1 meter 1000 10,000 100 Watts 50 Watts 2000 Watts Peak 20 Watts 1000 Watts Peak 10 Watts Field Level (V/m) 500 Watts Peak 5 Watts 200 Watts 2 Watts 100 1,000 30 35 40 45 50 55 Frequency (GHz) ATH33G50 Field Strength at 3 meters 1000 10000 100 Watts 50 Watts 2000 Watts Peak 20 Watts 100 1000 Watts Peak 1000 10 Watts 5 Watts 500 Watts Peak Field Strength (V/m) Strength Field 200 Watts 2 Watts 10 100 30 35 40 45 50 55 Frequency (GHz) ATH33G50 Gain (dBi) ATH33G50 3dB Beamwidth 24 12.5 23.8 12 H Plane 23.6 23.4 11.5 23.2 11 23 10.5 Degrees Gain (dBi) 22.8 22.6 10 E Plane 22.4 9.5 22.2 22 9 30 35 40 45 50 30 35 40 45 50 Frequency (GHz) Frequency (GHz) Page 2 of 2 .