iderations\r•To predict what the harmonics will be in the chamber two main pieces of the\rsystem are of concern:\r•Amplifier Harmonic content rating\r•This is a rating given by the amplifier manufacturer\r•This is what must be controlled for meeting this requirement\r•Antenna Gain\r•Usually will increase throughout its frequency range.\r•For this reason the harmonic will have a higher gain than the\rfundamental\rJ. Smith\rTest setup must have a harmonic distortion\rof at least -6 dB!!!\rThe antenna can have a much higher gain at the harmonic:\rHere is the gain of a high gain antenna.\rThe harmonic of 2GHz has a ~5dB better\rgain\rIf an amplifier had a poor harmonic\rcontent of -1dBc, the harmonics of 2GHz\rwith this antenna would be 4dB above the\rfundamental.\rGain Vs. Frequency\rJ. Smith
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