DC and Bias Point Simulations > BJT Fmax vs. Bias

Description

This simulates the maximum frequency of oscillation (the frequency at which the maximum available gain drops to 0 dB), versus bias current, for a particular value of VCE. It should help you determine how high in frequency a device can be used.

Needed to Use Schematic

Nonlinear BJT model

Main Schematic Settings

VCE, base current sweep limits, and frequency range for S-parameter simulation

Data Display Outputs

• The maximum available gain versus base current and frequency
• dB(S21) versus base current and frequency
• The maximum frequency of oscillation, which is dependent on a marker that you move to select the value of collector current

Schematic Name

BJT_fmax_vs_bias

Data Display Name

BJT_fmax_vs_bias.dds