Satellite Communication System – Definition, Block Diagram, Advantages and Disadvantages

Satellite Communication System – Definition, Block Diagram, Advantages and Disadvantages: A satellite communication channel provides broad-area coverage in a continental as well as intercontinental sense. Moreover, access to remote areas not covered by conventional cable or fiber communications is also a distinct feature of satellites. The basic elements of satellite communication system are earth stations, …

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Foster Seeley Detector – Circuit Diagram, Working and its Phasor Diagram

Foster Seeley Detector – Circuit Diagram, Working and its Phasor Diagram: The circuit diagram of the Foster Seeley detector is shown in Fig. 22.54. This Foster Seeley Detector circuit consists of an inductively coupled double tuned circuit in which both primary and secondary coils are tuned to the same frequency (intermediate frequency). The centre of …

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Balanced Slope Detector – Working, Advantages and Disadvantages

Balanced Slope Detector – Working, Advantages and Disadvantages: The circuit of a balanced slope detector is shown in Fig. 22.53 (a). This circuit employees two slope detectors connected back to back to the opposite ends of a centre tapped secondary of the transformer. Thus voltages supplied to the two sides are in phase opposition. The …

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Simple Slope Detector – Circuit diagram and its Characteristics

Simple Slope Detector – Circuit diagram and its Characteristics: The circuit diagram of a simple slope detector is depicted in Fig. 22.52(a). This Slope Detector circuit consists of a tuned circuit which is slightly detuned from the carrier frequency ωc. In other words, the circuit uses two tuned circuits which are tuned to two different …

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Transistor Detector Circuit Working Principle

Transistor Detector Circuit Working Principle: It is possible to achieve amplitude demodulation by using a three-element electronic device. A typical example of such a configuration is illustrated in Fig. 22.51. This circuit is called a transistor detector. In addition to detection of the modulated carrier input signal, it also furnishes amplification of the modulating signal. …

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Amplitude Detection Process

Amplitude Detection Process: Amplitude Detection – The process of demodulation demands that the modulated wave has some definite average value and the carrier wave is separated out. Hence in demodulation of an AM wave two operations, viz. rectification of the modulated wave and elimination of the RF component of the modulated wave are involved. Essentials …

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What is Demodulation or Detection? – Need of demodulation

What is Demodulation or Detection? – Need of demodulation: Demodulation or detection is a process of recovering the original modulating signal (intelligence) from the modulated carrier wave i.e., the demodulation is a process reverse of the process of modulation. Need of demodulation: The wireless signals transmitted from a transmitter consist of RF carrier waves and …

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