PPT-Frequency Modulation (FM)

Bryan G8DKK Outline AM and FM Waveforms FM Transmission Modulation Frequency Deviation Mic Gain Control LimiterLimiting amplifier Occupied Bandwidth FM Receivers Receiver bandwidth Filters. Even for the pure tone modulation the FM spectrum consists of an in64257nite number of sidebands whose signs change from one sideband to the next one and whose amplitudes are given by the horrible Bessel functions I work for Zurich Instruments a S Those light waves may be sent through a transparent medium as a laser beam or con tained within a fiber optic cable The conversion from high frequencyhigh speed electrical signals into light can occur in two general waysapplied directly to the power Husheng Li. The University of Tennessee. Phase and Frequency Modulation. Consider the standard CW signal. We define the total instantaneous angle. Phase and Frequency Modulation. Phase modulation (PM). Section 6.6. DSB/SC-AM . Modulation (Review). Frequency Shift . Property (Review). Frequency Spectrum of DSB/SC-AM . Signal (Review). Carrier Signal for Amplitude Modulation. Pulse Amplitude Modulation. Husheng Li. The University of Tennessee. AM Signals and Spectra. An AM signal can be written as. Power of AM. The total transmit power is given by. We can prove that, at least 50% (often close to 2/3) of the total transmitted power resides in a carrier term that is independent of the signal and thus conveys no message information. (what a waste!). Husheng Li. The University of Tennessee. Phase and Frequency Modulation. Consider the standard CW signal. We define the total instantaneous angle. Phase and Frequency Modulation. Phase modulation (PM). Modulation: embedding an information-bearing signal into a second signal. e.g. . purposes :. locate the signal on the right band of the spectrum. multiplexing : simultaneous transmission of more than . Modulation: embedding an information-bearing signal into a second signal. e.g. . purposes :. locate the signal on the right band of the spectrum. multiplexing : simultaneous transmission of more than . Techniques . ( 24 marks). Visit for more Learning Resources. Transmission Techniques. Baseband . Transmission . The electrical equivalent of original information is known as the . baseband signal. . Tenenbaum, . Wetherall. (uploaded on Canvas). Communication. Exchange of information from point A to point B. 100001101010001011101. 100001101010001011101. Transmit. Receive. Wireless Communication. 교수님. 학습노트. 10. 2010104012. 한택희. Electromagnetic Spectrum. 1. Audio Frequency(20~20,000Hz). 2.Radio Frequency. A. Low . Freq. : 30kHz(10km)~300kHz(1km). *. 참고. : 300KHz . 전파하려면 안테나는 . Lecture 2– 2019/1440. By: Elham Sunbu. OUTLINE. Modulation. Analog Modulation.. AM. FM. PM. Digital Modulation.. Modulation. Operation of varying amplitude, frequency or phase of carrier signal accordingly with the instantaneous amplitude of the message signal.. RAM RATAN SINGH COLLEGE, . A CONSTITUENT UNIT OF PATLIPUTRA UNIVERSITY, . MOKAMA, PATNA. e-Content for . B.Sc. Physics . Honours. students of . RAM RATAN SINGH COLLEGE, . A CONSTITUENT UNIT OF PATLIPUTRA UNIVERSITY, . GRE-90-23 and GRE-90-35. Rationale for introducing a new pulse modulations. Frame . length. : 4.16. ms. = 217Hz . Slot length: 577µs. This corresponds to PM (217Hz, 577µs)!. Conclusion:. PM1 (217Hz, 577µs) is suitable to emulate 2G..