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April 17th 07, 04:55 AM
posted to rec.radio.amateur.antenna
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Phase and Gain for Directional Antenna Needed
"junoexpress" wrote in message oups.com... I would say that the specifics are not that important. The DGA we worked with had a cylindrically symmetric gain pattern that resembled a "skinny" cardiod. The gain at the zenith was about roughly 12 Bic, which fell to roughly 1 Bic at about 60 degrees (where the angle measured is not the elevation, but the spherical coord theta). In fact, you just made me realize that I fit the theta dependence very well via the equation 0.00002399q^3 - 0.0031083q^2 - 0.025008q+11.0153 and that the phase as a function of theta was very linear, and that the phase as a function of phi was "about" constant. What's a Bic? |
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