非线性LNA的仿真方法

LAB 2 non-linear LNALAB 2.

Non-linearity in LNA

Objective:
1. One-tone test 2. two-tone test 3. Bias circuit design 4. Noise Circle and Input matching 5. Output matching for maximum gain 6. Final matching network design One-tone test 1. Save the final linear LNA schematic to a new name 2. Insert a HB simulation controller

Double click on VAR. Add RFfreq=2.46 and Pavs = 0 as shown

Var Eqn

VAR VAR1 L=0.6 RFfreq=2.46 Pavs=0

Change the HB simulation controller parameters as shown
HARMONIC BALANCE
HarmonicBalance HB1 Freq[1]=RFfreq GHz Order[1]=7

3. Insert a frequency domain source

Set the P_1Tone source parameters as shown
P_1Tone PORT1 Num=1 Z=50 Ohm P=polar(dbmtow(Pavs),0) Freq=RFfreq GHz

4. Rename the I_probe to Iout. Click on NANE to name the output node. Enter Vout and Vin in the dialog box and c