Frequency Modulation Xavier University – Ateneo de Cagayan Submitted by: Submitted to: Dapal‚ Jamie Daisylette Engr. Mary Jean Apor Fermano‚ Jerick James Oraiz‚ Gerard James Sabunod‚ Shane John Siman‚ Lester C. Objectives: 1. To obtain a frequency modulated signal via direct method 2. To understand the process of frequency modulation by direct method Background Theory: Frequency modulation uses the information signal‚ Vm(t) to vary
Premium Modulation
AMPLITUDE MODULATION AND DEMODULATION : OBJECTIVE : Study how to perform the amplitude modulation and demodulation and to calculate the modulation index for various modulating voltages. Theory : AMPLITUDE MODULATION : Modulation is defined as the process by which some characteristics of a carrier signal is varied in accordance with a modulating signal. The base band signal is referred to as the modulating signal and the output of the modulation process is called as the modulation signal. Amplitude
Premium Modulation
CS3282 Digital Comms 9.1 2 May’06 / BMGC Multi-level digital modulation & demodulation. 9.1. Introduction: So far‚ in looking at carrier modulated data transmission‚ we have concentrated mainly on binary signalling using simple forms of ASK‚ FSK and PSK. With a suitable pulse-shape‚ binary signalling can achieve a bandwidth efficiency of up to 2 bits/second per Hz using real unipolar pulses (base-band equivalent of ASK) or real bipolar pulses (base-band equivalent of PSK) at base-band.
Premium Modulation
(2) Frequency shifting 07 (b) An audio signal 15sin2ᴨ (1500t) amplitude modulates a carrier 60 sin2ᴨ 07 (100‚000t). i) Sketch the audio signal. ii) Sketch the carrier. iii) Construct the modulated wave. iv) Determine the modulation index and percentage modulation. v) What are the frequencies of the audio signal and the carrier? OR 1 Q.4 (a) Determine the fourier transform of rectangular pulse shown below. Q.4 (b) A 107.6 MHz carrier is frequency modulated by a 7 KHz sine
Premium Modulation Phase
Amplitude modulation or AM as it is often called‚ is a form of modulation used for radio transmissions for broadcasting and two way radio communication applications. Although one of the earliest used forms of modulation it is still in widespread use today. The first amplitude modulated signal was transmitted in 1901 by a Canadian engineer named Reginald Fessenden. He took a continuous spark transmission and placed a carbon microphone in the antenna lead. The sound waves impacting on the microphone
Premium Radio
Vectors Modulation for Nine-Switch Converters Seyed Mohammad Dehghan Dehnavi‚ Student Member‚ IEEE‚ Mustafa Mohamadian‚ Member‚ IEEE‚ Ali Yazdian‚ Member‚ IEEE‚ and Farhad Ashrafzadeh‚ Senior Member‚ IEEE Abstract—Recently‚ nine-switch inverter and nine-switch-zsource inverter have been proposed as dual output inverters. In this paper‚ the space vector modulation (SVM) of nine-switch inverter and nine-switch-z-source inverter is proposed. The proposed method increases the sum of modulation indices
Premium Electrical engineering Direct current Output
Advanced Modulation Techniques for Power Converters by Ali Mehrizi-Sani A Thesis submitted to the Faculty of Graduate Studies of The University of Manitoba in partial fulfilment of the requirements of the degree of Master of Science Department of Electrical and Computer Engineering University of Manitoba Winnipeg‚ Manitoba Copyright c 2007 by Ali Mehrizi-Sani Acknowledgement Submission of this thesis marks a milestone in my academic career. After 18 years of schooling‚ there
Premium Alternating current Voltage Modulation
Journal of Biomaterials Applications http://jba.sagepub.com/ Modulation of Gene Expression of Rabbit Chondrocytes by Dynamic Compression in Polyurethane Scaffolds with Collagen Gel Encapsulation Peng-Yuan Wang‚ Hsiang-Hong Chow‚ Wei-Bor Tsai and Hsu-Wei Fang J Biomater Appl 2009 23: 347 originally published online 12 August 2008 DOI: 10.1177/0885328208093684 The online version of this article can be found at: http://jba.sagepub.com/content/23/4/347 Published by: http://www.sagepublications
Premium Gene expression Extracellular matrix Collagen
Systems EEE F311 Contents 1 Aim of the course‚ what to expect? 2 Course content 3 Instructions about the course 4 Introduction/Discussions Aim of the course … Understanding signals and systems Analog & Digital modulation/transmission techniques Understanding important block-sets of communication system Information theory Analysis of communication systems Recent trends in communication References required B.P. Lathi‚ Modern Digital and Analog
Premium Radio Wireless
devices that have the ability to convert analog and digital signals. In analog technology‚ there are also advantages and disadvantages of amplitude modulation‚ frequency modulation‚ phase modulation‚ and quadrature amplitude modulation (QAM). This paper will give a brief description of those advantages and disadvantages‚ and also offer the specific modulation techniques that are used in a 56K modem‚ Asymmetrical Digital Subscriber Line‚ and Wi-Fi. The T(X) and the synchronous optical network (SONET)
Premium Modulation