Antenna tuning system for operation over a predetermined frequency range
作者： Robert P. Parker
DOI:
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摘要: A tunable antenna system operates over a predetermined frequency range with an having length and width each significantly less than quarter wavelength within the range. controllable reactive element is coupled to has variable reactance for tuning in resonant circuit of desired signal An antenna-tuning responsive which tuned providing control so that remains signal. The includes dither component varying around level detector representative transduced by antenna. second harmonic twice frequency. responds provide amplitude reduces increasing component.
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