All units can be provided independently or as matched sets with the phase and amplitude tracking shown below. L3Harris can also provide the Q137 Series pre-assembled into interferometer arrays with customer specified spacing. In addition, the Q137 Series can be adapted for the reception of many polarizations with the addition of L3Harris model Q156 Series of polarizer grids. These lightweight, multilayer grids are specifically designed for interface with the Q137 Series and provide slant-45 polarization.
Q137 Series Antennas Specifications
| Antenna Gain (dBi) | Frequency - 2 GHz | Frequency - 4 GHz | Frequency - 6 GHz |
|---|---|---|---|
| Peak | 7.5 | 12 | 12.5 |
| +/-40°AZ @ 0° EL | 5.1 | 7.7 | 7.4 |
| +/-40°EZ @ 0° AZ | 5.1 | 7.7 | 9.0 |
| Back-Lobe, max (-dBc) | 8 | 23 | 26 |
| Polarization | Horizontal |
| Phase tracking | |
| Within +/-40° AZ and +/-10° EL | 10° peak-to-peak |
| Within any 100MHz | 2° peak-to-peak |
| Within 10° AZ | 94% <2° peak-to-peak, 100% <3.5° peak-to-peak |
| Within 5° EL | 99% <2° peak-to-peak, 100% <2.8° peak-to-peak |
| Polarization | 2° peak-to-peak |
| Relative to gold standard | +/- 6° |
| VSWR, max | 2.5:1 for 100%, 2.0:1 for 85% |
| Amplitude tracking | |
| Within +/-40° AZ and +/-10° EL | 2 dB peak-to-peak |
| Within +/- 65° AZ and +/- 10° EL | 4 dB peak-to-peak |
| Gain at -90°÷65° and 65°÷90 AZ comparative to any antenna gain at 25° and -25° AZ for +/- 10° EL | 5 dB min 4.3 dB min below 2.5 GHz |
| Within any 100 MHz | 0.6 dB peak-to-peak |
| Within any 10° AZ | 0.6 dB peak-to-peak |
| Within any 5° | 0.6 dB peak-to-peak |
| Within any polarization | 0.6 dB peak-to-peak |
| Squint | 2° max |
| Power handling | +34 dBm up to 6 GHz, +28 dBm above 6 GHz |
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