CPI SAT 3122 1.2M Tx/Rx Ka-Band Antenna
Receive Only and TX/RX for linear and circular polarization from 27.00-31.00 GHz
3122 1.2M Ka-Band VSAT Antenna
The CPI SAT (formerly GD Satcom Technologies & Prodelin) 3122 1.2M Ka-Band Antennas feature high gain for circular and Ka-Band linear polarization transmit and receive system applications.
Model Numbers
3122-990 w/0800-4925 Linear Cross POL Receive Only
3122-990 w/0800-4328 Circular RX-Only
3122-990 w/0800-4661 TX/RX Linear Cross-POL
3122-990 w/ 0800-4662 Circular Tx/Rx
3122-990 w/0800-4680 Dual-Linear Receive-Only
3122-990 w/0800-4694 Dual-Circular RX-Only
CPI SAT's products encompass the design, development, and manufacture of microwave and satellite communication VSAT antennas for domestic and international applications. Digisat specializes in providing high quality, cost-effective antennas for both the two-way Very Small Aperture Terminal (VSAT) marketplace and receive-only applications. Additional products include unique special purpose antennas for such customers as NASA and defense contractors.
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Electrical |
Ka-Band - Circular |
Ka-Band - Circular |
Ka-Band - Linear |
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Antenna Size |
1.2 M |
1.2 M |
1.2 M |
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Operating Frequency (GHz) |
Receive Transmit |
20.20 - 21.20 GHz 30.00 - 31.00 GHz |
18.30 - 21.20 GHz 29.20 - 31.00 GHz |
18.70 - 21.20 GHz 27.00 - 31.00 GHz |
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Midband (± 0.5dB) |
Receive Transmit |
46.30 dBi 49.50 dBi |
45.80 dBi 49.40 dBi |
46.10 dBi 49.20 dBi |
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VSWR |
1.25:1 max |
1.3:1 max |
Rx: 1.5:1 max Tx: 1.3:1 max |
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Pattern Beamwidth (in degrees at midband) |
-3 dB -15 dB |
Rx: 0.83° Tx: 0.56° Rx: 1.86° Tx: 1.26° |
Rx: 0.85° Tx: 0.57° Rx: 1.90° Tx: 1.28° |
Rx: 0.84° Tx: 0.54° Rx: 1.88° Tx: 1.30° |
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Sidelobe Envelope, Co-Pol (dBi) |
29 - 25 Logq dBi |
29 - 25 Logq dBi |
29 - 25 Logq dBi |
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100l / D < q ≤ 20° |
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20° < q ≤ 26.3° |
-3.5 dBi |
-3.5 dBi |
-3.5 dBi |
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26.3° < q ≤ 48° |
32 - 25 Logq dBi |
32 - 25 Logq dBi |
32 - 25 Logq dBi |
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q > 48° |
-10 dBi (averaged) |
-10 dBi (averaged) |
-10 dBi (averaged) |
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Antenna Noise Temperature |
178 K |
178 K |
181 K |
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5° Elevation |
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10° Elevation |
137 K |
137 K |
140 K |
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20° Elevation |
107 K |
107 K |
110 K |
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40° Elevation |
89 K |
89 K |
92 K |
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Power Handling |
100 W |
100 W |
100 W |
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Cross Polarization Isolation On Axis Within 1.0 dB Beamwidth |
17.70 dB 17.70 dB |
Rx: 17.70 dB Tx: 21.30 dB Rx: 17.70 dB Tx: 21.30 dB |
Rx: 30.00 dB Tx: 35.00 dB 26.00 dB |
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Output Waveguide Interface Flange |
Rx: WR42 Tx: WR28 |
Rx: WR42 Tx: WR28 |
RRx: WR42 Tx: WR28 |
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Maximum Feed Support Weight |
8 lbs. (3.5 kg.) |
8 lbs. (3.5 kg.) |
8 lbs. (3.5 kg.) |
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Mechanical |
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Reflector Material |
Glass Fiber Reinforced Polyester SMC, Ka-Band Formulation |
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Antenna Optics |
1-piece Offset, Prime Focus |
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Mast Pipe Size |
2.5” SCH 40 Pipe (2.88” OD) 73.2 mm |
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Elevation Adjustment Range |
5°to 90°, Continuous Fine Adjustment |
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Azimuth Adjustment Range |
± 10°Fine Adjustment, 360°Continuous |
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Shipping Specifications |
80 lbs. (36 kg.) |
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Environmental Performance |
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Wind Loading |
Operational Survival |
45 mph (72 km/h) *0.5 dB Loss @ 14.25 125 mph (201 km/h) |
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Temperature (operational) |
- 40°to 140°F (- 40°to 60°C) |
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Rain (operational) |
½” / hr |
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Ice (operational) |
--------------------------------- |
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Atmospheric Conditions |
Salt, Pollutants and Contaminants as Encountered in Coastal and Industrial Areas |
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Solar Radiation |
360 BTU/h/ft2 |
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Circular and Linear Ka-Band Transmit and Receive, Receive Only
