Electromagnetic Wave.

Slides:

Advertisements

Similar presentations

What is a signal ? A function of one or more independent variables which contain some information. Voltage, Current ,temperature are all different signals.

Advertisements

Double Side Band Suppressed Carrier

Modulación Analógica (AM-FM) Cx Eléctricas 09 – E.Tapia.

Intelligent Islamic Electrical Engineers (IIEE)

نیمسال دوّم افشین همّت یار دانشکده مهندسی کامپیوتر ارتباطات داده (883-40) مدولاسیون های موج پیوسته 1.

Chapter 5 Analog Transmission.

Department of Electronics and CommunicationsEngineeringYANSAHAN UNIVERSITY Department of Electronics and Communications Engineering YANSAHAN UNIVERSITY.

Sep 27, 2005CS477: Analog and Digital Communications1 Amplitude Modulation Analog and Digital Communications Autumn

Sep 30, 2005CS477: Analog and Digital Communications1 SSB and Demodulation Analog and Digital Communications Autumn

C H A P T E R 4 AMPLITUDE MODULATIONS AND DEMODULATIONS

Standard Amplitude Modulation (AM)

Phasor Analysis of Bandpass Signals

Chapter 8. Impact of Noise Husheng Li The University of Tennessee.

Chapter 4 Amplitude Modulation. Baseband vs Passband Transmission  Baseband signals: Voice (0-4kHz) TV (0-6 MHz)  A signal may be sent in its baseband.

Telecommunication 1.3 – Radio and Television. Radio and TV Receivers The parts of a radio and TV receiver can be represented by a block diagram. Write.

FM Demodulation Dr. Ali Muqaibel.

Chapter 2: Continuous-Wave Modulation ©2000, John Wiley & Sons, Inc. Haykin/Communication Systems, 4th Ed Chapter2 Continuous-Wave Modulation.

1/21 Chapter 5 – Signal Encoding and Modulation Techniques.

Prof. Brian L. Evans Dept. of Electrical and Computer Engineering The University of Texas at Austin EE345S Real-Time Digital Signal Processing Lab Spring.

EE104: Lecture 20 Outline Review of Last Lecture Noise in AM Receivers Single Sideband Modulation Vestigial Sideband Modulation AM Radio and Superheterodyne.

111 Lecture 5 Basic Modulation Techniques (I) Principles of Communications Fall 2008 NCTU EE Tzu-Hsien Sang.

Lecture 18-19: Linear Modulations Aliazam Abbasfar.

Prepared by Sam Kollannore U. Lecturer, Department of Electronics M.E.S.College, Marampally, Aluva-7.

Introduction to Communication Prepared By Dr. Hany Taher Modified by: Dr. Mouaaz Nahas.

Sideband Modulations Reduction in transmitted power Reduction in Bandwidth (B) Reduction in kTB Sideband modulators are more complex Sideband demodulators.

SINGLE SIDEBAND (SSB).

Chapter 3. Amplitude Modulation. Start with the sinusoidal modulating wave. Single-Sideband Modulation 2.

Contents Introduction ( P1-P4). Frequency modulation.(P5-P7) Frequency demodulation (P8-P14) FM using simulink implementation (P15 – P 17)

Wireless Transmission Professor: Dr. Miguel Alonso Jr.

AMPLITUDE MODULATION (AM) 2-2 AM Single Side Band Communications

 Transmission in which frequencies produced by amplitude modulation are symmetrically spaced above and below the carrier frequency and the carrier level.

Communication Systems

Amplitude/Phase Modulation

Ms.Pallavi Dhok Lecturer, ETC Department.  Modulation  The process by which some characteristics of a carrier wave is varied in accordance with an.

Chapter 4 Amplitude Modulation. Baseband vs Passband Transmission  Baseband signals: Voice (0-4kHz) TV (0-6 MHz)  A signal may be sent in its baseband.

 Time domain equation y AM (t) = Information or message x carrier = m(t) x A cos(w c t)  Frequency domain equation.

Chapter 2 Continuous-Wave Modulation

Modulation and Multiplexing Broadband Transmission – A carrier is a high frequency signal that is modulated by audio, video, or data. – A radio-frequency.

A TECHNICAL BRIEFING FOR AMATEUR RADIO OPERATORS

Analog Communications

Unit: Sound and Light Lesson 3: Wireless Communication

디지털통신 Bandpass Modulation 1 임 민 중 동국대학교 정보통신공학과.

Communications Engineering 1

Lecture 1.7. AM FM PM OOK BPSK FSK

AMPLITUDE MODULATION (AM) Part 3 - AM Single Side Band Communications

Analog Operating Modes

1 Contents Theory Implementation –Transmitter –Detector Synchronous Square Power analysis Summary.

Lecture 9 Outline: AM and FM Modulation

Amplitude Modulation.

Chapter 5 AM, FM, and Digital Modulated Systems

Analog Communications

ANALOG COMMUNICATION SYSTEMS

Analog Transmission.

TLEN 5830-AWL Advanced Wireless Lab

Middle Technical University - Iraq

Introduction to Communications

Introduction to Analog And Digital Communications

Lecture 5: DSB-SC AM Modulation 1st semester

DATA COMMUNICATION Lecture-19.

Chapter 3: First generation systems-Analog Modulation

Which of the following is a form of amplitude modulation?

Analog to Analog Modulation

Chapter Three: Amplitude Modulation

(Modulation) Data Transmission And Digital Communication

Introduction to Communication Systems (CNET - 222)

Digital-to-Analog Conversion

Electrical Communications Systems ECE Spring 2019

Communication Theory as Applied to Wireless Sensor Networks

Communication Theory- I Course Code:17 EC 2206 Dr. G V Subbarao Professor Department of Electronics and Communication Engineering K L University.

Electrical Communications Systems ECE Spring 2019

Presentation transcript:

Electromagnetic Wave

Wireless Communication Cellular Phone Radio Television .

Analog Modulation http://en.wikipedia.org/wiki/Modulation Amplitude modulation Double-sideband modulation DSB + Double-sideband modulation with unsuppressed carrier (DSB- WC)(used on the radio AM band) + Double-sideband suppressed-carrier transmission (DSB-SC) + Double-sideband reduced carrier transmission (DSB-RC) Single-sideband modulation + Single-sideband modulation (SSB, or SSB-AM), very similar to + single-sideband suppressed carrier modulation (SSB-SC) Vestigial sideband modulation (VSB, or VSB-AM) Quadrature amplitude modulation (QAM) Angle modulation Frequency modulation (FM) Phase modulation (PM)

http://www.williamson-labs.com/480_am.htm Amplitude Modulation

Amplitude Modulation

Envelope and Modulation Percentage Transmitted signal: Envelope: Percentage of Modulation: For any message satisfies -1≤ Bm(t) ≤ +1: Over Modulation:

Envelope and Modulation Percentage Transmitted signal: Envelope: Percentage of Modulation: For a message:

http://www.williamson-labs.com/480_am.htm Over Modulation

Envelope Detector Envelope:

Example for Square Wave