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  1. jimeagle

    433 MHz flat antenna design

    My experience with FR4 Patch antennas on this frequency is that they have significant loss... probably -8dBi gain (-10dBd), due mainly to the loss tangent of 0.01. Teflon works better with about -1 to -3dBi gain, depending on whether you use a full sized patch (1/2-wavelength in the...

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