Patent ID: 7545608

Claim:
A current-perpendicular-to-the-plane read head structure comprising: a substrate; a first shield S 1 of magnetically permeable material on the substrate, wherein the capacitance between S 1 and the substrate is represented by C 1 ; a second shield S 2 of magnetically permeable material, the first shield being located between the substrate and the second shield, wherein the capacitance between S 2 and the substrate is represented by C 2 ; a magnetoresistive read head between and in contact with the first and second shields; a first shunt resistor connecting the first shield to the substrate; and a second shunt resistor connecting the second shield to the substrate; wherein the electrical resistances of the first and second shunt resistors are approximately equal and wherein the spacing between the substrate and S 1 is selected to achieve C 1 being approximately equal to C 2 .