Patent ID: 8358179

Claim:
A semiconductor device, comprising: a substrate; a radio frequency (RF) coupler formed over the substrate, the RF coupler including, (a) a first conductive trace having a first end coupled to a first terminal of the semiconductor device, and second end coupled to a circuit node, and (b) a second conductive trace having a first end coupled to a second terminal of the semiconductor device, and second end coupled to a third terminal of the semiconductor device, the first conductive trace being placed in proximity to a first portion of the second conductive trace; and a low-pass filter formed over the substrate, wherein a second portion of the second conductive trace operates as a circuit component of the low-pass filter, the low-pass filter including, (c) the second portion of the second conductive trace, (d) a first capacitor coupled between the second terminal and a fourth terminal of the semiconductor device, (e) a second capacitor coupled between the third terminal and a fifth terminal of the semiconductor device, and (f) a third capacitor coupled between the second terminal and third terminal of the semiconductor device.