It is currently Thu Apr 16, 2026 3:37 pm
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INTRODUCTION TO COMMUNICATION SYSTEM
Communication system is very important in our modern world. We need to communicate easily regardless of time and distant. However, we need to understand how communication systems are working. - 0 Topics
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AMPLITUDE MODULATION (AM)
The basic modulation technique is an analog modulation called amplitude modulation (AM). You will learn the basic principle of analog modulation and the type of amplitude modulation.
Subforums: PRINCIPLE OF AM, AM GENERATION, AM DEMODULATION - 0 Topics
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ANGLE MODULATION
Angle modulation can be divided into phase modulation (PM) and frequency modulation (FM). This modulation technique is also analog modulation. However, this technique has been widely used due to its advantages. PM and FM are inter-related.
Subforums: PRINCIPLE OF PM/FM, FM GENERATION, FM DEMODULATION - 0 Topics
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PULSE MODULATION
Digital modulation came after analog modulation. It offer a lot of advantages especially on noise insensitivity and easy to be stored and reproduced. This topic introduce the basic concept of digital signal and digital modulation. - 0 Topics
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DIGITAL MODULATION RADIO
Digital modulation radio process is similar with analog modulation. In this modulation, the signal information is a digital signal while the carrier signal is high frequency sinusoidal signal. If the signal is analog, it need to be converted into digital signals prior to modulation process.
Subforums: AMPLITUDE SHIFT KEY (ASK), FREQUENCY SHIFT KEY (FSK), PHASE SHIFT KEY (PSK), MULTILEVEL SHIFT KEY (M-ARY) - 0 Topics
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MULTIPLEXING
Multiplexing is a process to send more than one signals simultaneously using the same channel. The main purpose is to increase capacity of users. There are several advantages using this method that will be discussed in detail. - 0 Topics
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INTRODUCTION TO SIGNALS AND SYSTEMS
What do we have in this Topic are: Type of signals. Continuous-Time signals and system, Discrete-Time signals and system. Signal operation. Elementary signal models. Type of systems. Continuous-Time, Linear Time-Invariant System, Convolution.
Subforums: SIGNALS & BASIC FUNCTION, SIGNAL OPERATIONS, SYSTEMS & CONVOLUTION - 0 Topics
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FOURIER SERIES AND APPLICATIONS
What do we have in this Topic are: Trigonometric & exponent. Symmetrical signals. Average value signal. Parseval’s theorem. Application of Fourier Series in an electrical circuit.
Subforums: TIME DOMAIN & FREQUENCY DOMAIN SIGNAL, TRIGONOMETRIC FOURIER SERIES, COMPLEX FOURIER SERIES - 0 Topics
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THE FOURIER TRANSFORM AND APPLICATIONS
What do we have in this Topic are: Fourier integral. Fourier transform theorems and properties. Application of Fourier transform – modulation, sampling, multiplexing and filtering.
Subforums: FOURIER TRANSFORM & ITS PROPERTIES, FOURIER TRANSFORM APPLICATIONS - 0 Topics
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THE LAPLACE TRANSFORM
What do we have in this Topic are: Time and frequency(s) domain functions. Laplace transform theorems. Inverse Laplace transform. Properties of Laplace transform, LTI System Characteristics.
Subforums: LAPLACE TRANSFORM & ITS PROPERTIES, LAPLACE TRANSFORM APPLICATIONS - 0 Topics
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BASICS AND ANALYSIS OF FILTERING
What do we have in this Topic are: Type of filters and its applications. Frequency response characteristics. Filter circuit. First order filter and transfer function representation. Fourier analysis for continuous-time systems and filter designs, e.g. Butterworth and Chebyshev filters.
Subforums: BASIC FILTERING, BOLD PLOT, BUTTERWORTH & CHEBYSHEV FILTER DESIGN - 0 Topics
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VECTORS AND COORDINATES
Vectors and Coordinate are two most important mathematical principles to solve problems related to electrostatic, magnetostatics and time varying field. Therefore, you should understand the principle very well before go through to another topics. - 1 Topics
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TEACHING VIDEO: Vectors and C…
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ELECTROSTATIC
Electrostatic field is created by static charges. The static charge can be in the form of point charge, line charge, surface charge, or volume charge. Electrostatic field can be solved using coulomb's law and gauss's law.
Subforums: COULOMB'S LAW, GAUSS'S LAW, ELECTRIC POTENTIAL, ELECTROSTATIC FIELD IN MATERIALS, LAPLACE'S AND POISSON'S EQUATION - 5 Topics
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TEACHING VIDEO: Laplace, Pois…
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MAGNETOSTATICS FIELD
Magnetostatics field is created by moving charges. The moving charge charge (steady current) can be in the form of filament current, surface current, and volume current. Magnetostatics field can be solved using Biot Savart's law and Ampere's law.
Subforums: BIOT SAVART'S LAW, AMPERE'S CIRCUITAL LAW, MAGNETIC FORCE AND MATERIALS - 3 Topics
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TEACHING VIDEO: Magnetic Forc…
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TIME VARYING FIELD
Electrostatic field created by static charge while magnetostatics field created by moving charge (time-invariant current or Direct current). However, when we have time varying current as a source of the field, we will later discover that the electric and magnetic field will co-exist together. This topics discuss the concept or Faraday's law and then electromagnetic field.
Subforums: TIME VARYING FIELD, ELECTROMAGNETIC FIELD - 2 Topics
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TEACHING VIDEO: Electromagnet…
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