Explain “BALUN” with neat sketch

Explain “BALUN” with neat sketch
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Explain the following characteristics of AM radio receiver: (i) Sensitivity (ii) Selectivity.

Description : Explain the following characteristics of AM radio receiver: (i) Sensitivity (ii) Selectivity.

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Draw the circuit diagram of limiter and explain its working.

Description : Draw the circuit diagram of limiter and explain its working.

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List the types of FM detector. Explain any one of them.

Description : List the types of FM detector. Explain any one of them.

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Draw the TRF receiver block diagram and explain its working.

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Draw the diagram for PAM generation using transistors. Explain its working.

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List the types of micro-strip antennas. Explain any one of them.

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Draw the circuit diagram of varactor diode FM modulator and explain its working.

Description : Draw the circuit diagram of varactor diode FM modulator and explain its working.

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List and explain the properties of quarter wave transformer.

Description : List and explain the properties of quarter wave transformer.

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Explain the use of baluns for impedance matching.

Description : Explain the use of baluns for impedance matching.

Last Answer : Balun stands for Balance to unbalance. It can also be used to connect the unbalanced transmission line to a balance load such as antenna. It consist of special type of transformer with an unbalanced primary ... matching. Its input is 300-75ohm. It consist of two quarter wave length.  

Explain the transverse electromagnetic waves in wave propagation.

Description : Explain the transverse electromagnetic waves in wave propagation.

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Explain the demodulation of AM signal using diode detector.

Description : Explain the demodulation of AM signal using diode detector.

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Explain pre-emphasis and de-emphasis concept in FM.

Description : Explain pre-emphasis and de-emphasis concept in FM.

Last Answer : Pre-emphasis:- In an FM system the higher frequencies contribute more to the noise than the lower frequencies. Because of this all FM systems adopt a system of pre-emphasis where the higher frequencies are ... at receiver to improve the noise immunity Pre-emphasis/ De-emphasis graph:

State and explain the losses in transmission line.

Description : State and explain the losses in transmission line.

Last Answer : Losses in Transmission Line:- There are three ways in which energy, applied to a transmission may desperate before reaching the load. They are 1) Radiation Losses:- Its occurs when a ... down voltage of the dielectric insulator. Generally when corona occurs, the transmission line is destroyed.