hi;
i need a good paper for Investigation about waveguide solt array antenna for high power application. in this case i need to design waveguide power divider for feeding waveguide slot array antenna . tanx for attention.
Dear Mr Beiranvand, I think we are tackling multiple issues here. If you are comfortable designing waveguide slot antennas combining this with waveguide dividers shall not be a problem. If I add a proper array of slots to the two side arms of waveguide Tee Junction it will be a waveguide divider and slot antennas. The relatively complicated form of this configuration was four elements of monopulse radar antennas, There the divider and slot array are more complex. So you need to study dividers and slot antennas separately first. As regards to power handling it primarily depends upon waveguide material and how you dissipate the heat generated. In very high power carrying waveguides you may need portion of waveguide to be nitrogen (or some other coolant) cooled. You can find formulas to give you an ides how much heat generation is expected. The paper I am attaching is no quick start guide but a very good classical document to build your concepts for slot antennas. This was the first document I shared with young engineers who needed to design waveguide slot antennas, primarily for radar applications. Regards
Waveguide slot antenna can be designed for high power application as waveguide is a very low loss transmission line. It allows to propagate signals to a number of smaller antennas (slots). Each of these slots allows a little of the energy to radiate. Slot impedance and resonant behavior for a single slot are dependent on slot placement and size. Its exceptional directivity in the elevation plane gives it quite high power gain. The slotted waveguide has achieved most of its success when used in an omnidirectional role To make the unidirectional antenna radiate over the entire 360 degrees of azimuth, a second set of slots are cut in the back face of the waveguide. Slotted antenna arrays used with waveguides are a popular antenna in navigation, radar and other high-frequency systems.
More details you can find on : https://anilkrpandey.wordpress.com/2016/12/05/slotted-waveguide-array-antenna/
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