Title :
An equivalent circuit model for a Faraday cage substrate crosstalk isolation structure
Author :
Wu, Joyce H. ; Del Alamo, Jesus A.
Author_Institution :
MIT, Cambridge, MA, USA
Abstract :
We have developed a physics-based equivalent circuit model for a novel Faraday cage substrate crosstalk isolation structure. This compact isolation approach relies on high-aspect ratio, solid copper substrate vias that are shorted to ground. A cage constructed with these vias can be used to enclose sensitive or noisy portions of a chip and has been proven effective up to 50 GHz. The Faraday cage equivalent-circuit model is based on a well-established substrate crosstalk model, with the substrate node shunted to ground through a series inductor-resistor branch that represents the substrate vias. This straightforward approach provides good agreement with the measured data into the millimeter-wave regime for different layouts of the Faraday cage.
Keywords :
crosstalk; equivalent circuits; integrated circuit modelling; integrated circuit noise; interference suppression; isolation technology; lumped parameter networks; millimetre wave integrated circuits; substrates; Cu; Cu-Si-Si3N4; Faraday cage substrate crosstalk isolation structure; equivalent circuit model; grounded vias; high-aspect ratio vias; lumped-element equivalent circuit; millimeter-wave range; series inductor-resistor branch; solid copper substrate vias; substrate noise; Circuit noise; Circuit testing; Copper; Crosstalk; Equivalent circuits; Isolation technology; Radio frequency; Radio transmitters; Semiconductor device modeling; Solids;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2004. Digest of Papers. 2004 IEEE
Print_ISBN :
0-7803-8333-8
DOI :
10.1109/RFIC.2004.1320701