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Modeling >> Passive Devices >> Ideal Directional coupler in Cadence
https://designers-guide.org/forum/YaBB.pl?num=1676554899

Message started by Kyle on Feb 16^th, 2023, 5:41am

Title: Ideal Directional coupler in Cadence
Post by Kyle on Feb 16^th, 2023, 5:41am

Hi guys,
I need an ideal passive I/Q generation network in circuit for phase shifter simulation.
Does anyone knows how can I build one in virtuoso (cadence)? Is there any behavior model of directional coupler in analoglib?

Thank you!

Title: Re: Ideal Directional coupler in Cadence
Post by smlogan on Feb 17^th, 2023, 4:53pm

Dear Kyle,

> I need an ideal passive I/Q generation network in circuit for phase shifter
> simulation.
> Does anyone knows how can I build one in virtuoso (cadence)?

There is a behavioral quadrature generator in the rfLibrary called "quadrature" than can generate I and Q phased clocks from its "lead" and "lag" outputs. There is also a phase shifter called "shifter" that accepts an input and generates signals in quadrature that models an RC based phase splitter. As such, its quadrature output amplitudes vary with frequency.

> Is there any behavior model of directional coupler in analoglib?

No. You might be able to build one with components in the analogLib, but to my knowledge, there is not a specific behavioral model for a directional coupler in analogLib.

Shawn