Frequency Modulation |
Contents
CHAPTER | 1 |
Useful Formulas for Small Modulation Index 9 Three Types | 8 |
CHAPTER II | 150 |
Copyright | |
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AF/f amplifier amplitude modulation antenna b₁ band width capacitance carrier current carrier frequency carrier level carrier-frequency causes center frequency center-frequency circuit component condenser constant corresponding current of frequency curve cycles per second decibel demodulator dipole direct FM E₁ effective equal equivalent FM F₁ feeder field intensity FM receiver FM transmitter formula frequency deviation frequency discriminator frequency excursion frequency F frequency modulation frequency swing grid Hence i-f stages image response indirect FM inductance injected input impedance intermediate frequency linear maximum frequency maximum phase swing mixer modulation index modulation product modulator tube noise obtained ohms oscillator output voltage phase deviation piezo plate polarized produce quarter-wave-length quency R₁ radiation ratio reactance reactance tube reflector resistance resistor respect resultant shown in Fig side-current pair signal current signal frequency signal voltage surge impedance tank terminals tion tuned unmodulated carrier upper variation vector voltage Z₁