mmonopole antenna
mmonopole antenna
(OP)
is it possiable to built a monopole patch antenna without mounting a ground plane on the bottom of it?
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RE: mmonopole antenna
RE: mmonopole antenna
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The x's represent the solid etch pattern on a single sided board (two solid patches, a ground patch and a radiating patch). The input is connected between the bottom central x (center conductor) and the large ground patch. The triangle should be about 1/4 wavelength across the top and about 35° apex angle. The ground patch should be about 1 wavelength or more.
This is simple to evaluate. Just connect a coaxial connector betweeen the center conductor and the ground patch. For a 1/2" triangle, an SMA connector will work fine. It should operate well from about 4 to 8 gHz. To improve Return Losss (VSWR) change the apex angle.
Another approach is a printed circuit balun terminated in quarter wave elements.