Calculators » RF and Microwave » MESFET Cutoff Frequency Calculator

MESFET Cutoff Frequency Calculator

cutoff frequency
mesfet
rf microwave
transconductance
gate capacitance

This page provides a calculator for determining the MESFET cutoff frequency. It also details the cutoff frequency formula used by the MESFET calculator.

Inputs

Outputs

EXAMPLE:

INPUTS:

  • gm (m℧) = 50
  • Cgs (pF) = 0.60
  • Rd = 450 Ω
  • Rs = 2.5 Ω
  • Rg = 3 Ω
  • Ri = 2.5 Ω

OUTPUTS:

  • Cutoff frequency (Fco) = 13.26 GHz
  • Max. operating frequency (Fmax) = 49.73 GHz

MESFET Cutoff Frequency Formula or Equation

The following formula or equation is used for calculating the MESFET cutoff frequency:

MESFET cutoff frequency formula or equation

Where:

  • fco = cutoff frequency
  • gm = transconductance
  • Cgs = gate-source capacitance

MESFET Maximum Operating Frequency Formula

The following formula is used for calculating the maximum operating frequency:

MESFET maximum frequency formula or equation

Where:

  • fmax = maximum operating frequency
  • Rd = Drain resistance
  • Rs = Source Resistance
  • Rg = Gate metallization resistance
  • Ri = Input resistance
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