Cut-off Frequency of Microwave Calculator

✖Emitter collector delay time is defined as the transit time across the base-collector depletion region or space.ⓘ Emitter Collector Delay Time [τ_ec]

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✖Cut-off frequency in BJT 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 of Microwave [f_co]

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Cut-off Frequency of Microwave

Formula

`"f"_{"co"} = 1/(2*pi*"τ"_{"ec"})`

Example

`"30.05759Hz"=1/(2*pi*"5295μs")`

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Cut-off Frequency of Microwave Solution

STEP 0: Pre-Calculation Summary

Formula Used

Cut-off Frequency in BJT = 1/(2*pi*Emitter Collector Delay Time)
f_co = 1/(2*pi*τ_ec)
This formula uses 1 Constants, 2 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Cut-off Frequency in BJT - (Measured in Hertz) - Cut-off frequency in BJT 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.
Emitter Collector Delay Time - (Measured in Second) - Emitter collector delay time is defined as the transit time across the base-collector depletion region or space.

STEP 1: Convert Input(s) to Base Unit

Emitter Collector Delay Time: 5295 Microsecond --> 0.005295 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

f_co = 1/(2*pi*τ_ec) --> 1/(2*pi*0.005295)

Evaluating ... ...

f_co = 30.0575907633419

STEP 3: Convert Result to Output's Unit

30.0575907633419 Hertz --> No Conversion Required

FINAL ANSWER

30.0575907633419 ≈ 30.05759 Hertz <-- Cut-off Frequency in BJT

(Calculation completed in 00.004 seconds)

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Home » Engineering » Electronics » Microwave Theory » Microwave Semiconductor Devices » BJT Microwave Devices » Cut-off Frequency of Microwave

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< 15 BJT Microwave Devices Calculators

Maximum Frequency of Oscillations

Go Maximum Frequency of Oscillations = sqrt(Common Emitter Short Circuit Gain Frequency/(8*pi*Base Resistance*Collector Base Capacitance))

Emitter Base Charging Time

Go Emitter Charging Time = Emitter Collector Delay Time-(Base Collector Delay Time+Collector Charging Time+Base Transit Time)

Base Collector Delay Time

Go Base Collector Delay Time = Emitter Collector Delay Time-(Collector Charging Time+Base Transit Time+Emitter Charging Time)

Collector Charging Time

Go Collector Charging Time = Emitter Collector Delay Time-(Base Collector Delay Time+Base Transit Time+Emitter Charging Time)

Base Transit Time

Go Base Transit Time = Emitter Collector Delay Time-(Base Collector Delay Time+Collector Charging Time+Emitter Charging Time)

Emitter to Collector Delay Time

Go Emitter Collector Delay Time = Base Collector Delay Time+Collector Charging Time+Base Transit Time+Emitter Charging Time

Collector Base Capacitance

Go Collector Base Capacitance = Cut-off Frequency in BJT/(8*pi*Maximum Frequency of Oscillations^2*Base Resistance)

Base Resistance

Go Base Resistance = Cut-off Frequency in BJT/(8*pi*Maximum Frequency of Oscillations^2*Collector Base Capacitance)

Avalanche Multiplication Factor

Go Avalanche Multiplication Factor = 1/(1-(Applied Voltage/Avalanche Breakdown Voltage)^Doping Numerical Factor)

Saturation Drift Velocity

Go Saturated Drift Velocity in BJT = Emitter to Collector Distance/Average Time to Traverse Emitter to Collector

Emitter to Collector Distance

Go Emitter to Collector Distance = Maximum Applied Voltage in BJT/Maximum Electric Field in BJT

Total Charging Time

Go Total Charging Time = Emitter Charging Time+Collector Charging Time

Cut-off Frequency of Microwave

Go Cut-off Frequency in BJT = 1/(2*pi*Emitter Collector Delay Time)

Total Transit Time

Go Total Transit Time = Base Transit Time+Collector Depletion Region

Hole Current of Emitter

Go Hole Current of Emitter = Base Current+Collector Current

Cut-off Frequency of Microwave Formula

Cut-off Frequency in BJT = 1/(2*pi*Emitter Collector Delay Time)
f_co = 1/(2*pi*τ_ec)

What is a Microwave Transistor?

A Microwave transistor is a non-linear device and its principle of operation is similar to
that of a low-frequency device. In microwave applications, silicon (Si) transistors are normally used for the frequency range from UHF to S-band

How to Calculate Cut-off Frequency of Microwave?

Cut-off Frequency of Microwave calculator uses Cut-off Frequency in BJT = 1/(2*pi*Emitter Collector Delay Time) to calculate the Cut-off Frequency in BJT, The Cut-off Frequency of microwave formula is defined as 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 in BJT is denoted by f_co symbol.

How to calculate Cut-off Frequency of Microwave using this online calculator? To use this online calculator for Cut-off Frequency of Microwave, enter Emitter Collector Delay Time (τ_ec) and hit the calculate button. Here is how the Cut-off Frequency of Microwave calculation can be explained with given input values -> 30.05759 = 1/(2*pi*0.005295).

FAQ

What is Cut-off Frequency of Microwave?

The Cut-off Frequency of microwave formula is defined as 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 = 1/(2*pi*τ_ec) or Cut-off Frequency in BJT = 1/(2*pi*Emitter Collector Delay Time). Emitter collector delay time is defined as the transit time across the base-collector depletion region or space.

How to calculate Cut-off Frequency of Microwave?

The Cut-off Frequency of microwave formula is defined as 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 in BJT = 1/(2*pi*Emitter Collector Delay Time). To calculate Cut-off Frequency of Microwave, you need Emitter Collector Delay Time (τ_ec). With our tool, you need to enter the respective value for Emitter Collector Delay Time and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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