Here is the result of the geometry set up for 3D electromagnetic simulation. The antenna is modeled in the simulation space and then feed by the wideband impulse then the response is processed for easy visualization.
3D simulation - the visualisation of the radiation pattern. Colours allow for checking the intensity of the electromagnetic wave. Cold colours are for the lowest intensity, hottest ones are for the highest intensity.
3D simulation - the two dimensional visualisation of the radiation. The trained eye will see the low level of sidelobes, roughly - 20 dB below the main beam and also the low level of the back radiation.
3D simulation - the impedance maching or VSWR. This prototype has a very good maching, less than 2.0 in the band 9.2 to 10 GHz, but do not expect that the radiation properties will be the same in the whole band.
The set of the standard horn gain antenna with known and accurate gain. The measurement set-up consists the vector analyzer and waveguide horn antennas connected by a 10m long the very low loss and a phase stable coaxial cables.
Advantest R3860A RF COMPONENT ANALYZER - the workhorse in my laboratory