Explain the high-frequency response of fet amplifier, Electrical Engineering

Assignment Help:

Q. Explain the high-frequency response of FET amplifier?

 The analysis for the high frequency response of the FET amplifier is almost the same as that of the BJT amplifier. The FET amplifiers are interceded and wiring capacitances that will determine the high frequency characteristics of the amplifier. The capacitors C(6) and C(7) typically vary from 0.1 to 10 pF, while the capacitance C(8) usually vary from a bit higher range from 0.1 to 1 pF. Since the network is an inverting amplifier, a Miller effect capacitance will appear in the high frequency ac equivalent network. At high frequencies, Ci will approach a short circuit equivalent network and Vgs will drop in value and reduces the overall gain. At the frequencies where Co approaches its short circuit equivalent, the parallel output voltage Vo will drop in magnitude.

654_Explain the high-frequency response of FET amplifier.png

 

R(th) o = R (4) || R (5)

Co = C (5) + C (8) + Cn,

Cn = ( 1 - (1/A)) * C(7)


Related Discussions:- Explain the high-frequency response of fet amplifier

State fleming''s right-hand rule, Fleming's Right-hand rule states: Let ...

Fleming's Right-hand rule states: Let the thumb, first finger and second finger of the right hand be extended such that they are all at right angles to every other. If the first

Calculate the sending end voltage, A 150 km long, 3-phase, 400 kV overhead ...

A 150 km long, 3-phase, 400 kV overhead line is used to transmit 1800 MW to a distribution area at 0.9 power factor lagging. The line parameters per phase and per unit length in st

Evaluate the directions of conventional currents, Q. For a p-channel JFET i...

Q. For a p-channel JFET in its active region, specify the polarities of voltages and the directions of conventional currents.

What is the use of modem control unit in 8251, What is the use of modem con...

What is the use of modem control unit in 8251? The modem control unit handles the modem handshake signals to coordinate the communication among the modem and the USART.

Priming, short note on priming

short note on priming

Explain the meaning of synchronous counters, Explain the meaning of Synchro...

Explain the meaning of Synchronous Counters? In the synchronous counters the clock inputs of all the flip-flops are connected together and are triggered by the input pulses, the

Erc and kpi, ERC and KPI The company requires understanding the strate...

ERC and KPI The company requires understanding the strategic and nearing term impact of the Regulator's orders / tariff approval process. Once these dimensions are understood,

DECISIEN FEEDBACK, Do you provide me matlab code for comparison the perfor...

Do you provide me matlab code for comparison the performance of decision feedback equalizer over MLSE

Basic principles of electrical engineering, What is ideal and real sources?...

What is ideal and real sources? Source conversion? Nodal voltage method for d.c circuit?

Not gate- introduction microprocessors , Normal 0 false fals...

Normal 0 false false false EN-IN X-NONE X-NONE

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd