Microwave devices

E plane tee – axis of its side arm is parallel to the electric field in the main branch.E arm is also called series arm and main arm is called collinear arm. If fields of same magnitude and phase are entered through the opposite sides of main arm then net field in the side arm …

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FET & JFET

FET FET has square law characteristics. It has negative temperature coefficient. High immunity against radiation. FET has least noise. Pinch off voltage of FET is 5 volt. FET is classified in to JFET ( junction field effect transistor) and MOSFET (metal oxide semiconductor FET). MOSFET has highest input impedance. Quiescent current of FET is ID. …

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Carrier telephony

Carrier is generated by high precision, temperature controlled crystal oscillator, operates at a frequency 124 KHz. Output of this master oscillator is feed to harmonic generator, which supplies super group carrier frequencies. Required harmonics are selected by filters. 124 KHz frequency is subdivided into 4 KHz. This 4 KHz is then used in odd and …

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