FM Demodulation using the PLL 1 Introduction This should be an exciting lab (honest)! By the time you’re done, you should be sending and receiving your very own FM broadcasts from within the confines of the
(57)< Abstract > < Objective > As for this device, the voltage which is added to the voltage controlled oscillatorTo make precision high, the switching signal for accurate synchronous detectionThe PLL circuit for FM stereo demodulation which it can be generated is offeredru. < Constitution > ...
Whilst it is very useful to have an understanding of the broad principles of the generation of sidebands within an FM signal, it is sometimes necessary to determine the levels mathematically.The calculations are not nearly as simple as they are for amplitude modulated signals and they involve ...
Si2494-39 V.9 2 A N D V.3 4 I S O M O D E M ® W I T H G LO BAL D A A Features EEPROM interface Commercial or industrial temperature range DTMF detection/generation Si3000 Voice Codec Interface Hardware su...
As is obvious from the above-mentioned construction, the signalling system constitutes a PLL and a signal on the output line of an amplifier 4 is output (OUT) as a demodulation signal. The VCO 12 includes a varactor diode and the oscillation frequency is controlled by controlling the voltage...
the radiowave equipment, LSI technology has rapidly progressed. This tendency is also seen in FM demodulation circuit. The FM demodulation circuit using PLL has been popular with the progress of LSI technology and may be established by the process of C-MOS and the like suitable for LSI ...
(57)< Abstract > < Objective > As for this device, the voltage which is added to the voltage controlled oscillatorTo make precision high, the switching signal for accurate synchronous detectionThe PLL circuit for FM stereo demodulation which it can be generated is offeredru. < Constitution > ...
PURPOSE:To reduce the operating time at the 2nd application of an FM modulation wave by intermitting the connection between a loop filter and a voltage controlled oscillator circuit in response to the interruption of the FM modulation wave with a detection signal from an amplitude detector and ...
PURPOSE:To stably perform stereophonic demodulation by passing a subcarrier signal component receiving the influence of frequency fluctuation obtained by a PLL circuit through a PLL circuit with low responsiveness as a PLL in which a crystal oscillator is used as an oscillator. CONSTITUTION:Since a ...
FIG. 2 shows a demodulation band characteristic of the ordinary PLL-FM demodulator shown in FIG. 1. In case of satisfying the conditions such that the sum of the phase error between the input signal and a reference frequency f0 of the voltage controlled oscillator 5 and the phase error in ...