I designed an antenna with coaxial feed in Ku-band (about 13 GHz) in CST Studio and I would like to make an phased array antenna with two elements and change the phased. Apparently there are two ways to design the phased antenna array. One of them is with simulation project and the other way is after running the single element of the antenna in far field, there is an array factor and with changing the number of elements and phaseshift, you get the results.
1) Should be the results of both ways the same in the same conditions? If yes, why my results are different? I attached my result with the 0 phased shift.
2) How can you calculate the main lobe direction in different phased- shifts manually?
3) What is the cut angle? Which cut angle with which constant should I consider?
Thank you very much in advance!
The questions you ask seem to indicate you don't understand quite a lot about this. CST probably won't design it for you. You have to design it and CST shows you if you did it right.
Look on this page and some of the links, watch the videos and try some of the equations.
https://www.microwaves101.com/encyclopedias/phased-array-antennas
I don't think this next page is very good, but it may help. The references look good.
https://www.mwrf.com/technologies/embedded/systems/article/21133656/analog-devices-phasedarray-antenna-patterns-part-1lineararray-beam-characteristics-and-array-factor
Depending how close array elements are there will be some near field cross-talk between them. This may have quite noticable impact on arrray directivity and even feeder matching.
Thank you! But they are two elements with the same distsnce. The only thing that is different is the way of the simulation. Above is with array task and bottom is with array factor. Nikolay Pavlov
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