The antenna element has a wide angle of view in the azimuth plane and a moderate angle of view in the elevation plane, and have been designed to provide repeatable, unit-to-unit, amplitude tracking.
The Q139-1 includes an integrated, multilayer polarizing grid that provides Slant 45 polarization and allows for the reception of virtually all signal polarizations. The Q139-1 can be provided independently or as matched sets with the amplitude tracking shown below.
| Gain and backlobe | Frequency (GHz) | Peak | ± 45° AZ @ 0° EL | ± 5° EL @ 0° AZ | ± 10° EL @ 0° AZ | Backlobe (max) |
|---|---|---|---|---|---|---|
| Antenna gain (dBi min) (measured at applicable polarization) | ||||||
| 18.0 | 11.0 | 7.8 | 11.0 | 8.0 | 18.0 | |
| 20.2 | 11.5 | 8.1 | 11.5 | 8.2 | 20.0 | |
| 22.4 | 10.5 | 7.6 | 8.2 | 5.7 | 22.0 | |
| 24.6 | 9.5 | 7.6 | 8.5 | 6.5 | 22.0 | |
| 26.8 | 9.5 | 6.8 | 9.5 | 7.0 | 22.0 | |
| 29.0 | 9.3 | 5.5 | 8.0 | 5.0 | 22.0 | |
| 31.2 | 11.3 | 8.7 | 11.0 | 9.0 | 22.0 | |
| 33.4 | 11.5 | 8.2 | 11.0 | 8.0 | 22.0 | |
| 35.6 | 10.8 | 4.4 | 10.8 | 8.8 | 22.0 | |
| 37.8 | 11.5 | 4.8 | 11.0 | 9.0 | 22.0 | |
| 40.0 | 13.9 | 4.8 | 13.0 | 10.0 | 22.0 | |
| VSWR | 2.0:1 max | |||||
| Polarization | Slant 45° | |||||
| Amplitude tracking | ||||||
| Parameter | Value | |||||
| Amplitude tracking (to any antenna within same frequency) within ±45° AZ and ±15° EL for any polarization and frequency in band (dB max) | 2.0 dB p.t.p. for 50% of the data 2.5 dB p.t.p. for 60% of the data 3.0 dB p.t.p. for 80% of the data 3.5 dB p.t.p. for 88% of the data 5.0 dB p.t.p. for 100% of the data |
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| Amplitude tracking within ±65° AZ and ±15° EL for any polarization and frequency in band (dB max) | +/- 6 | |||||
| Gain at -90° to -65° and 65° to 90° AZ comparative to any antenna gain at 45° and -45° AZ (dB max) for ±15° EL | 2.0 dB p.t.p. for 50% of the data 2.5 dB p.t.p. for 60% of the data 3.0 dB p.t.p. for 80% of the data 3.5 dB p.t.p. for 88% of the data 5.0 dB p.t.p. for 100% of the data |
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| Power handling | +34 dBm up to 6 GHz, +28 dBm above 6 GHz | |||||
