Was based on the design of the patch G3RUH. The feed polarization is LHCP, so that the antenna becomes RHCP when the patch is mounted as a feed for a dish. Recalculation was made for the center frequency 1700 MHz. It was made several variants before got the best results.
| Frequency | 1662 - 1751 MHz |
| SWR | <1.5:1 |
| Polarisation | LHCP |
| Gain | 8.5 db |
| -3db beamwidth | 85 deg. |
| -10 db beamwidth | 125 deg. |
| Suitable dish F/D | 0.3 - 0.5 |
| Overall diameter | 160 mm |
| Depth | 22 mm |
| Impedance | 50 ohm |
| Connector | N-male |
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Tests using an analyzer R&S FSL6 and a reflectometer.
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The results of measurements return loss in 1700 Mhz:
The band at 1.5 VSWR:
Full span panorama:
The simple programm to conversion between VSWR-Return loss available here.
-------------------------------- Update 5 Jun 2012 ---------------------------------