Cut-off Frequency Calculator

✖Saturated Drift Velocity is the maximum velocity that can travel in a charge carrier of a semiconductor.ⓘ Saturated Drift Velocity [V_s]			+10% -10%
✖Gate Length is defined the distance between the source and the drain electrodes along the direction perpendicular to the plane of the semiconductor material, and parallel to the gate electrode.ⓘ Gate Length [L_gate]			+10% -10%

✖Cut-off Frequency is defined as corner frequency is a boundary in system's frequency response at which energy flowing through system begins to be reduced rather than passing through.ⓘ Cut-off Frequency [f_co]

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Formula

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Cut-off Frequency

Formula

`"f"_{"co"} = "V"_{"s"}/(4*pi*"L"_{"gate"}) `

Example

`"30.05192Hz"="5mm/s"/(4*pi*"13.24μm") `

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Download MESFET Characteristics Formulas PDF

Cut-off Frequency Solution

STEP 0: Pre-Calculation Summary

Formula Used

Cut-off Frequency = Saturated Drift Velocity/(4*pi*Gate Length)
f_co = V_s/(4*pi*L_gate)
This formula uses 1 Constants, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Cut-off Frequency - (Measured in Hertz) - Cut-off Frequency is defined as corner frequency is a boundary in system's frequency response at which energy flowing through system begins to be reduced rather than passing through.
Saturated Drift Velocity - (Measured in Meter per Second) - Saturated Drift Velocity is the maximum velocity that can travel in a charge carrier of a semiconductor.
Gate Length - (Measured in Meter) - Gate Length is defined the distance between the source and the drain electrodes along the direction perpendicular to the plane of the semiconductor material, and parallel to the gate electrode.

STEP 1: Convert Input(s) to Base Unit

Saturated Drift Velocity: 5 Millimeter per Second --> 0.005 Meter per Second (Check conversion here)
Gate Length: 13.24 Micrometer --> 1.324E-05 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

f_co = V_s/(4*pi*L_gate) --> 0.005/(4*pi*1.324E-05)

Evaluating ... ...

f_co = 30.0519152363851

STEP 3: Convert Result to Output's Unit

30.0519152363851 Hertz --> No Conversion Required

FINAL ANSWER

30.0519152363851 ≈ 30.05192 Hertz <-- Cut-off Frequency

(Calculation completed in 00.004 seconds)

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Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

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< 13 MESFET Characteristics Calculators

Cut-off Frequency using Maximum Frequency

Go Cut-off Frequency = (2*Maximum Frequency of Oscillations)/(sqrt(Drain Resistance/(Source Resistance+Gate Metallization Resistance+Input Resistance)))

Gate Metallization Resistance

Go Gate Metallization Resistance = ((Drain Resistance*Cut-off Frequency^2)/(4*Maximum Frequency of Oscillations^2))-(Source Resistance+Input Resistance)

Source Resistance

Go Source Resistance = ((Drain Resistance*Cut-off Frequency^2)/(4*Maximum Frequency of Oscillations^2))-(Gate Metallization Resistance+Input Resistance)

Input Resistance

Go Input Resistance = ((Drain Resistance*Cut-off Frequency^2)/(4*Maximum Frequency of Oscillations^2))-(Gate Metallization Resistance+Source Resistance)

Drain Resistance of MESFET

Go Drain Resistance = ((4*Maximum Frequency of Oscillations^2)/Cut-off Frequency^2)*(Source Resistance+Gate Metallization Resistance+Input Resistance)

Transconductance in Saturation Region

Go Transconductance = Output Conductance*(1-sqrt((Schottky Diode Potential Barrier-Gate Voltage)/Pinch Off Voltage))

Maximum Frequency of Oscillations in MESFET

Go Maximum Frequency of Oscillations = (Unity Gain Frequency/2)*sqrt(Drain Resistance/Gate Metallization Resistance)

Maximum Frequency of Oscillation given Transconductance

Go Maximum Frequency of Oscillations = Transconductance/(pi*Gate Source Capacitance)

Cut-off Frequency given Transconductance and Capacitance

Go Cut-off Frequency = Transconductance/(2*pi*Gate Source Capacitance)

Gate Source Capacitance

Go Gate Source Capacitance = Transconductance/(2*pi*Cut-off Frequency)

Transconductance in MESFET

Go Transconductance = 2*Gate Source Capacitance*pi*Cut-off Frequency

Cut-off Frequency

Go Cut-off Frequency = Saturated Drift Velocity/(4*pi*Gate Length)

Gate Length of MESFET

Go Gate Length = Saturated Drift Velocity/(4*pi*Cut-off Frequency)

Cut-off Frequency Formula

Cut-off Frequency = Saturated Drift Velocity/(4*pi*Gate Length)
f_co = V_s/(4*pi*L_gate)

What are the applications of MESFET?

MESFETs offer advantages such as high gain, high speed, low noise, and low power consumption, making them suitable for various applications in electronics, telecommunications, and biomedical fields.

How to Calculate Cut-off Frequency?

Cut-off Frequency calculator uses Cut-off Frequency = Saturated Drift Velocity/(4*pi*Gate Length) to calculate the Cut-off Frequency, The Cut-off frequency MESFET formula is defined as a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced rather than passing through. Cut-off Frequency is denoted by f_co symbol.

How to calculate Cut-off Frequency using this online calculator? To use this online calculator for Cut-off Frequency, enter Saturated Drift Velocity (V_s) & Gate Length (L_gate) and hit the calculate button. Here is how the Cut-off Frequency calculation can be explained with given input values -> 30.05192 = 0.005/(4*pi*1.324E-05) .

FAQ

What is Cut-off Frequency?

The Cut-off frequency MESFET formula is defined as a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced rather than passing through and is represented as f_co = V_s/(4*pi*L_gate) or Cut-off Frequency = Saturated Drift Velocity/(4*pi*Gate Length). Saturated Drift Velocity is the maximum velocity that can travel in a charge carrier of a semiconductor & Gate Length is defined the distance between the source and the drain electrodes along the direction perpendicular to the plane of the semiconductor material, and parallel to the gate electrode.

How to calculate Cut-off Frequency?

The Cut-off frequency MESFET formula is defined as a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced rather than passing through is calculated using Cut-off Frequency = Saturated Drift Velocity/(4*pi*Gate Length). To calculate Cut-off Frequency, you need Saturated Drift Velocity (V_s) & Gate Length (L_gate). With our tool, you need to enter the respective value for Saturated Drift Velocity & Gate Length and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Cut-off Frequency?

In this formula, Cut-off Frequency uses Saturated Drift Velocity & Gate Length. We can use 2 other way(s) to calculate the same, which is/are as follows -

Cut-off Frequency = Transconductance/(2*pi*Gate Source Capacitance)
Cut-off Frequency = (2*Maximum Frequency of Oscillations)/(sqrt(Drain Resistance/(Source Resistance+Gate Metallization Resistance+Input Resistance)))

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