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Circuit model for substrate resonance coupling in grounded coplanar waveguide circuits

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1 Author(s)
Jackson, R.W. ; Dept. of Electr. & Comput. Eng., Massachusetts Univ., Amherst, MA, USA

At high frequencies, grounded coplanar waveguide MMIC circuits can be prone to destructive intercircuit coupling effects due to substrate resonances. Analytic formulas for a simple circuit model of this coupling are presented in this paper. The model can be used with commercially available CAD in order to estimate the importance of such coupling for a particular circuit and substrate configuration. Results predicted by this model are compared to numerically rigorous spectral domain results and to experiment

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:41 ,  Issue: 9 )