Tag: Telecommunication systems
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Sweep Frequency Generator: Function, Features & Applications
Function & Features of a Sweep Frequency Generator A special type of signal generator which generates a sinusoidal output whose frequency is automatically varied or swept between two chosen frequencies is referred to as sweep frequency generator. One complete cycle … Read more
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Voltage-Controlled Attenuator: Function, Features & Application
Function of a Voltage-Controlled Attenuator The function of a voltage-controlled attenuator is to produce an output signal vo(t) that is a variable fraction of the ac input signal vin(t). The process of reduction of the amplitude … Read more
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Microwave Active Devices: Types, Features & Operation
Generally microwave devices can be categorized as either passive components or active components. We have already talked about microwave passive components in this other article. This article focuses on microwave active devices. They may be classified into two types: … Read more
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Radio Frequency (RF) Signal Generator – Features & Applications
A radio frequency (RF) signal generator is used in generating high frequency signals at a specific frequency for testing laboratories. The output frequency may range for example from about 100 kHz to around 40 GHz. A typical RG generator consists … Read more
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What is the difference between Broadband and Baseband Transmission?
Broadband transmission is used for a network in which information is modulated onto a radio frequency carrier which passes through the transmission medium such as a coaxial cable. Broadband transmission allows a number of modulated radio frequency carriers to be … Read more
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Data Acquisition and Telemetering in Power Systems
To be able to manage and control a power system, the network engineer requires reliable and current information about the state of the network. He obtains this information from power flows, bus voltages, frequency and load levels along with the … Read more
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The Fundamentals of Oscillators in Communication Systems
A communication system consists of an input device, a transmitter, a transmission medium, receiver and output device. The input device can be a computer, sensor or oscillator, depending on the application of the system, while the output device could be … Read more
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Basics of Radio Frequency (RF) and Wireless Communication Systems
Radio frequency (RF) is any frequency within the electromagnetic spectrum associated with radio-wave propagation. When an RF current (input signal) is supplied to an antenna, an electromagnetic field is created that is then able to propagate through the space. RF … Read more