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Wipro Newlogic integrated VCO

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This example is an integrated VCO fabricated in a 90nm TSMC RF CMOS technology. It consists of an inductor and a bank of 66 MiM capacitors that are switchable for tuning. The inductor here is small, enough so that parasitic coupling between the inductor and interconnect and the details of how the capacitors are hooked up must be considered. Indeed, a block-by-block model failed to predic the VCO's behavior. Simulating the whole structure gave much more accurate results. The simulated and measured tuning curves are below. This example was published in a paper at CICC 2010.

 

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This example was published in a paper at CICC 2010.