Patent ID: 7355491
Filing Date: 2008-04-08
Classification: H01L,H01P,H05K

Abstract:
1. A signal path having a nominal impedance over a specified bandwidth and interconnecting a port of a microwave circuit package and a microwave component mounted in the microwave circuit package, the signal path comprising: a first inductive transition extending from a first point on the signal path to a second point on the signal path and having an excess impedance above the nominal impedance, wherein the first inductive transition comprises a signal via through at least one layer of the microwave circuit package, and the first and second points are on opposite ends of the signal via; a second inductive transition on the signal path and having an excess impedance above the nominal impedance; first and second capacitive structures respectively shunting the first and second points on the signal path; and a third capacitive structure shunting the signal path, wherein the first and second inductive transitions and the first, second and third capacitive structures approximate a CLCLC filter having an impedance substantially matching the nominal impedance over the specified bandwidth.