Upper 3dB Frequency of CE Amplifier Solution

STEP 0: Pre-Calculation Summary
Formula Used
Upper 3-dB Frequency = 2*pi*High Frequency Response
fu3dB = 2*pi*Ahf
This formula uses 1 Constants, 2 Variables
Constants Used
pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288
Variables Used
Upper 3-dB Frequency - (Measured in Hertz) - Upper 3-dB frequency is the cutoff frequency of an electronic amplifier stage at which the output power has dropped to half of its mid-band level.
High Frequency Response - High frequency response is the gain of the voltage amplifier at frequencies less than those frequencies at which this gain is close to its maximum value.
STEP 1: Convert Input(s) to Base Unit
High Frequency Response: 0.2 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
fu3dB = 2*pi*Ahf --> 2*pi*0.2
Evaluating ... ...
fu3dB = 1.25663706143592
STEP 3: Convert Result to Output's Unit
1.25663706143592 Hertz --> No Conversion Required
FINAL ANSWER
1.25663706143592 1.256637 Hertz <-- Upper 3-dB Frequency
(Calculation completed in 00.004 seconds)

Credits

Created by Payal Priya
Birsa Institute of Technology (BIT), Sindri
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Verified by Anshika Arya
National Institute Of Technology (NIT), Hamirpur
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8 Response of CE Amplifier Calculators

Effective High Frequency Time Constant of CE Amplifier
Go Effective High Frequency Time Constant = Base Emitter Capacitance*Signal Resistance+(Collector Base Junction Capacitance*(Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance))+(Capacitance*Load Resistance)
High-Frequency Band given Complex Frequency Variable
Go Amplifier Gain in Mid Band = sqrt(((1+(3 dB Frequency/Frequency))*(1+(3 dB Frequency/Frequency Observed)))/((1+(3 dB Frequency/Pole Frequency))*(1+(3 dB Frequency/Second Pole Frequency))))
Input Capacitance in High-Frequency Gain of CE Amplifier
Go Input Capacitance = Collector Base Junction Capacitance+Base Emitter Capacitance*(1+(Transconductance*Load Resistance))
Collector Base Junction Resistance of CE Amplifier
Go Collector Resistance = Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance
High-Frequency Gain of CE Amplifier
Go High Frequency Response = Upper 3-dB Frequency/(2*pi)
Upper 3dB Frequency of CE Amplifier
Go Upper 3-dB Frequency = 2*pi*High Frequency Response
Amplifier Bandwidth in Discrete-Circuit Amplifier
Go Amplifier Bandwidth = High Frequency-Low Frequency
Mid Band Gain of CE Amplifier
Go Mid Band Gain = Output Voltage/Threshold Voltage

25 Common Stage Amplifiers Calculators

Effective High Frequency Time Constant of CE Amplifier
Go Effective High Frequency Time Constant = Base Emitter Capacitance*Signal Resistance+(Collector Base Junction Capacitance*(Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance))+(Capacitance*Load Resistance)
High-Frequency Band given Complex Frequency Variable
Go Amplifier Gain in Mid Band = sqrt(((1+(3 dB Frequency/Frequency))*(1+(3 dB Frequency/Frequency Observed)))/((1+(3 dB Frequency/Pole Frequency))*(1+(3 dB Frequency/Second Pole Frequency))))
Open Circuit Time Constant in High Frequency Response of CG Amplifier
Go Open Circuit Time Constant = Gate to Source Capacitance*(1/Signal Resistance+Transconductance)+(Capacitance+Gate to Drain Capacitance)*Load Resistance
Test Current in Open Circuit Time Constants Method of CS Amplifier
Go Test Current = Transconductance*Gate to Source Voltage+(Test Voltage+Gate to Source Voltage)/Load Resistance
Input Capacitance in High-Frequency Gain of CE Amplifier
Go Input Capacitance = Collector Base Junction Capacitance+Base Emitter Capacitance*(1+(Transconductance*Load Resistance))
Input Resistance of CG Amplifier
Go Resistance = (Finite Input Resistance+Load Resistance)/(1+(Transconductance*Finite Input Resistance))
Load Resistance of CG Amplifier
Go Load Resistance = Resistance*(1+(Transconductance*Finite Input Resistance))-Finite Input Resistance
Collector Base Junction Resistance of CE Amplifier
Go Collector Resistance = Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance
Open Circuit Time Constant between Gate and Drain of Common Gate Amplifier
Go Open Circuit Time Constant = (Capacitance+Gate to Drain Capacitance)*Load Resistance
Load Resistance of CS Amplifier
Go Load Resistance = (Output Voltage/(Transconductance*Gate to Source Voltage))
High-Frequency Response given Input Capacitance
Go High Frequency Response = 1/(2*pi*Signal Resistance*Input Capacitance)
Output Voltage of CS Amplifier
Go Output Voltage = Transconductance*Gate to Source Voltage*Load Resistance
Equivalent Signal Resistance of CS Amplifier
Go Internal Small Signal Resistance = 1/((1/Signal Resistance+1/Output Resistance))
Frequency of Zero Transmission of CS Amplifier
Go Transmission Frequency = 1/(Bypass Capacitor*Signal Resistance)
Bypass Capacitance of CS Amplifier
Go Bypass Capacitor = 1/(Transmission Frequency*Signal Resistance)
Resistance between Gate and Source of CG Amplifier
Go Resistance = 1/(1/Finite Input Resistance+1/Signal Resistance)
High-Frequency Gain of CE Amplifier
Go High Frequency Response = Upper 3-dB Frequency/(2*pi)
Upper 3dB Frequency of CE Amplifier
Go Upper 3-dB Frequency = 2*pi*High Frequency Response
Drain Voltage through Method of Open-Circuit Time Constants to CS Amplifier
Go Drain Voltage = Test Voltage+Gate to Source Voltage
Source Voltage of CS Amplifier
Go Gate to Source Voltage = Drain Voltage-Test Voltage
Midband Gain of CS Amplifier
Go Mid Band Gain = Output Voltage/Small Signal Voltage
Amplifier Bandwidth in Discrete-Circuit Amplifier
Go Amplifier Bandwidth = High Frequency-Low Frequency
Mid Band Gain of CE Amplifier
Go Mid Band Gain = Output Voltage/Threshold Voltage
Resistance between Gate and Drain in Open Circuit Time Constants Method of CS Amplifier
Go Resistance = Test Voltage/Test Current
Current Gain of CS Amplifier
Go Current Gain = Power Gain/Voltage Gain

Upper 3dB Frequency of CE Amplifier Formula

Upper 3-dB Frequency = 2*pi*High Frequency Response
fu3dB = 2*pi*Ahf

What is meant by CE amplifier?

The common emitter amplifier is a three basic single-stage bipolar junction transistor and is used as a voltage amplifier. The input of this amplifier is taken from the base terminal, the output is collected from the collector terminal and the emitter terminal is common for both the terminals.

How to Calculate Upper 3dB Frequency of CE Amplifier?

Upper 3dB Frequency of CE Amplifier calculator uses Upper 3-dB Frequency = 2*pi*High Frequency Response to calculate the Upper 3-dB Frequency, Upper 3dB Frequency of CE Amplifier refers to the frequency beyond which the amplifier's output drops to -3dB relative to its input. This frequency is typically specified in the amplifier's datasheet and is a measure of the amplifier's high-frequency performance. Upper 3-dB Frequency is denoted by fu3dB symbol.

How to calculate Upper 3dB Frequency of CE Amplifier using this online calculator? To use this online calculator for Upper 3dB Frequency of CE Amplifier, enter High Frequency Response (Ahf) and hit the calculate button. Here is how the Upper 3dB Frequency of CE Amplifier calculation can be explained with given input values -> 1.388584 = 2*pi*0.2.

FAQ

What is Upper 3dB Frequency of CE Amplifier?
Upper 3dB Frequency of CE Amplifier refers to the frequency beyond which the amplifier's output drops to -3dB relative to its input. This frequency is typically specified in the amplifier's datasheet and is a measure of the amplifier's high-frequency performance and is represented as fu3dB = 2*pi*Ahf or Upper 3-dB Frequency = 2*pi*High Frequency Response. High frequency response is the gain of the voltage amplifier at frequencies less than those frequencies at which this gain is close to its maximum value.
How to calculate Upper 3dB Frequency of CE Amplifier?
Upper 3dB Frequency of CE Amplifier refers to the frequency beyond which the amplifier's output drops to -3dB relative to its input. This frequency is typically specified in the amplifier's datasheet and is a measure of the amplifier's high-frequency performance is calculated using Upper 3-dB Frequency = 2*pi*High Frequency Response. To calculate Upper 3dB Frequency of CE Amplifier, you need High Frequency Response (Ahf). With our tool, you need to enter the respective value for High Frequency Response 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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