| 摘要 |
A generator of high frequency signals comprises a delay element and a switching element, whereby the delay element causes a delay of pi/4 radians, and the switching element is switching to produce an output at the fundamental frequency, but with enriched even harmonic content. A filter selects the desired harmonic, and passes this on as an output. Additionally, a maximizing circuit may vary the phase of the delay element to maximize the output level of the generator.
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