Patent ID: 7425880

Claim:
A device, comprising: a filter having an input for receiving an input signal including a plurality of different frequencies and an output for passing an output signal within a first frequency band; and a reactive coupling component coupled between the input of the filter and the output of the filter, the reactive coupling component for adding one or more zeros within a second frequency band to increase attenuation of the input signal within the second frequency band, wherein the reactive coupling component is directly connected to the input, and wherein the reactive coupling component is formed by: (a) a metal element of a first component of the filter; (b) a metal element of a second component of the filter, wherein the metal elements of the first component and second component are within a predetermined proximity and a predetermined orientation to each other; and (c) one of: a uniform dielectric between the first component and second component; and a uniform metal trace connecting the first component and the second component.