actually i want to make phase shift arrays. i wanted to know how to add phase shift in single element than in arrays.
Dear Zeeshan
please follow the instructions appeared in the attached image
1. build your own array
2. set the element ports
3.run transit solver
4. select (selection) instead of (All ports)
5.the excitation list is activated and you can put the required phase shift for each port.
correct, Phase shift is to be provided in the excitation of each element.
Thanks hend !! i have made this array. how could i set the element ports?
Dear Zeeshan
Probably now there is no way to add phase shifters at this stage as you already added the feeding power divider. My suggestion is to remove the power divider and then feed each antenna of the four antennas with a discrete port separately, hence you can do the beam steering. once you know the assigned phase for each antenna element, you can construct your power divider with different arm lengths each assigned to the specific phase shift
Thanks Ahmed for valuable comments.
I am also looking for process in cst as suggested by hend a malhat.
Each element in the antenna array can be exited separately with different excitation phase, by creating separate port at each element and providing phase according to requirement.
Yes, there is a way you can still alter the phase of your array. But you need to modify your structure either by adding via posts or by varying the length of your patch. Similarly, you can also model some active components such as diodes in your cst design for beam steering applications.
I am looking for simple tutorial of adding phase shift in antenna arrays using cst .
Please share .
Dear Umer Farooq Sir,
Thank you for your response.
I have some query....
How did I add Diode elements in array to get the phase shift?
In case of individual feed if I add the difference phase to each element of the array then what I will get as out put? How did I know that the phase of the array has been sifted?
In case of array, how can we get the phase shift with the help of using passive elements? and where I have to add?Please share some related papers.
You need to measure the phase of S21 provided that you have two port network. Else, you need to observe the changes in radiation pattern after varying the input phase. If the radiation pattern is tilted towards some direction, it means the input phase is changed with reference to previously fed phase. Hope it helps.
Umer Farooq Sir,
Thanks for your attention.
But I have only one port in my designed array (4 elements). In that case how I will add the diode to obtain the different phase shift from the array? How I will design in CST software?
Please share your comments sir.
@zeeshan Ahmed lodro sir did u get the tutorial for assigning phase for each element separately.? I a also working in it but I couldn't find answer. Can u help me regarding this.
@abhishek Joshi. Sir as u have mentioned in ur answer , we can give separate phase for individual excitation, can u help in assigning the pport excitation along with phase variation.
To change the amplitude and phase of an individual element in an we need to go to far field plot---> far field array ---> user defined ---> (check for your array geometry) import .tsv file that contains amp+phase or you can add the random amp+phase. Note that it takes complex values i mean phase is to be given in rectngular format. Hopefully this helps
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