Patent ID: 6888061

Claim:
A ceramic feedthrough interconnection assembly comprising: A. a matrix having a. a first section comprising an electrically insulating material having a first dielectric constant; and b. a second section comprising an electrically insulating material having a second dielectric constant; B. said matrix further comprising: a. a first trans-matrix signal lead for communicating an electrical information signal such that said signal lead is exposed exclusively to said first electrically insulating material in said first section and to said second electrically insulating material in said second section; and b. a trans-matrix auxiliary lead; and C. a shield extending through said first and second sections and electrically shielding said signal lead from said auxiliary lead, said shield in said first and second sections is positioned at a distance from said signal lead with respect to the dielectric constant of any electrically insulating material such that the electrical information signal experiences a defined and substantially constant impedance.