Tunnel diode oscillator circuit for surf
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A. Omari; A.F. Khoder
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Article
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1993
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Elsevier Science
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English
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We describe and analyse a simple method for the measurement of thin film surface impedance in the frequency range 10-20 MHz. This method is based on the analysis of both the frequency shift and the amplitude variation of the signal in a tunnel diode oscillator circuit inductively coupled to the samp