EEVblog Electronics Community Forum
Electronics => RF, Microwave, Ham Radio => Topic started by: rwgast_lowlevellogicdesin on September 07, 2017, 11:16:24 pm
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Im working on a 20 turn quad helix array in the L-Band, I also have 10 24inch parabolic wifi grids. So at 1.42ghz my helix antennas are calculated at 17db of gain, wich I know is much higher than what you get in real life, and at 1.42ghz the parabolic grids are a solid 16db when fed correctly. Im looking in to radio astronomy/satcom, and maybe even EME using arrays of smaller lighter antennas. I have a 3 meter C Band dish with an actuator for tilt, but a real az/el system is way out of my budget. The idea is I can steer arrays of smaller and lighter antennas using unistrut and maybe wheelchair motors with encoders and cheap worm gears, and minimal to no welding.
So the real question is how do I figure out how much gain ill get by adding an element in phase with the array. If I could get away with a 2 element array that would be nice but what about a 3x3 array of either helix or dish?