Advanced VCO Design using anso...

Advanced_VCO_Design_using_Ansoft_DesignerAdvanced VCO Design using Ansoft Designer
Moriaki Ueno Ansoft Japan

Presentation #8

Agenda
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About Ansoft Designer VCO specification Device library making Resonant Circuit design Oscillator Circuit design Buffer amp design Total analysis Conclusion

About Ansoft Designer
Communication System Simulation

Integrated environment

High Frequency Circuit Simulation

Planar EM Electro Magnetic Simulation

VCO specifications
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We intend to design VCO for mobile communications.
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Oscillation frequency Output power Supply voltage Current consumption

1800MHz +/- 30MHz more than 4dBm 3V 8mA

VCO circuit
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Vcc

Circuit topology and power estimation
Oscillator Buffer Amp

Output port

Freq. control

Resonant Circuit

Power level ; -3dBm

S21 ; 9dB @2GHz Ic=3mA Power level