ASY-CWG Series Corrugated Feeds Near-Field Probes
Corrugated feeds from ASYSOL are based on open-ended circular waveguide with several frontal corrugations. As a result of optimized design and high-precision manufacturing, the feeds possess rotationally symmetric radiation pattern with low back radiation and very low cross-polarization. In standard single-polarization configuration, the feeds are provided with integrated waveguide-to-coax adapters with SMA or K connector. In dual-polarization configuration, the feeds are provided with Ortho-Mode Transducers with very low cross-coupling. In both singlepol and dual-pol configurations, the feeds cover a standard waveguide band.
The feeds satisfy the requirement on the spherical modal content (μ=±1) important for spherical Near-Field measurements and thus the feeds are also used as spherical Near-Field probes. Their advantages over the usual open-ended waveguides are: better matching to the feed line, better suppression of the wall reflections, less dependent on the support structure interference, thus allowing more accurate Near-Field antenna measurements.
| Model Number | Frequency band [GHz] |
Gain [dBi] |
VSWR | Cx-pol [dB] |
|---|---|---|---|---|
| ASY-CWG-S/D-005 | 0.55 – 0.89 | 10.5 | < 1.6:1 | < -40 |
| ASY-CWG-S/D-007 | 0.75 – 1.1 | 11.0 | < 1.6:1 | < -40 |
| ASY-CWG-S/D-011 | 1.1 – 1.7 | 11.5 | < 1.6:1 | < -40 |
| ASY-CWG-S/D-017 | 1.7 – 2.6 | 11.5 | < 1.6:1 | < -40 |
| ASY-CWG-S/D-026 | 2.6 – 3.95 | 13.5 | < 1.5:1 | < -45 |
| ASY-CWG-S/D-039 | 3.95 – 5.85 | 13.5 | < 1.5:1 | < -45 |
| ASY-CWG-S/D-058 | 5.85 – 8.2 | 13.5 | < 1.5:1 | < -45 |
| ASY-CWG-S/D-082 | 8.2 – 12.4 | 13.5 | < 1.5:1 | < -45 |
| ASY-CWG-S/D-100 | 10.0 – 15.0 | 13.5 | < 1.5:1 | < -45 |
| ASY-CWG-S/D-124 | 12.4 – 18.0 | 13.5 | < 1.5:1 | < -45 |
| ASY-CWG-S/D-180 | 18.0 – 26.5 | 13.5 | < 1.5:1 | < -45 |
| ASY-CWG-S/D-265 | 26.5 – 40.0 | 13.5 | < 1.5:1 | < -45 |
| ASY-CWG-S/D-400 | 40.0 – 60.0 | 13.5 | < 1.5:1 | < -40 |
| ASY-CWG-S/D-500 | 50.0 – 75.0 | 13.5 | < 1.5:1 | < -40 |
| ASY-CWG-S/D-750 | 75.0 – 110.0 | 13.5 | < 1.5:1 | < -40 |
