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Simulators >> RF Simulators >> Simulating bias T with Spectre
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Message started by ahmed on Aug 11^th, 2004, 6:41am

Title: Simulating bias T with Spectre
Post by ahmed on Aug 11^th, 2004, 6:41am

I am trying to simulate a 5 GHz circuit that includes a bias T (huge inductor and a huge capacitor, both connected at the same node). Spectre does not converge when the bias T is included in simulation. Any suggestions to help the simulation converge while the bias T is included?
Thank you for the help.

Title: Re: Simulating bias T with Spectre
Post by Alez on Sep 6^th, 2004, 4:01am

Hi,

I'm not sure that you have already included the "series resistance" to the biasT's inductor or not,

If not, you can find this value, such as from Picosecond Lab biasT and include it to be a series resistance of the
inductor of the biasT, then try to simulate again.

Good Luck,

Alez

Title: Re: Simulating bias T with Spectre
Post by gt8167c on Oct 24^th, 2004, 8:27pm

I have designed a 2.4 GHz differential ring-oscillator VCO and I am trying to use a bias-T to get the signal off-chip for measurement. Can anybody point me to a good model of how to start simulating the bias-T?

I would appreciate any help.