Patent ID: 7869784
Filing Date: 2011-01-11
Classification: H01P

Abstract:
1. An electronic device formed on a semiconductor substrate having a first metal layer, a second metal layer that is higher relative to the first metal layer, and a third metal layer that is higher relative to the second metal layer, the electronic device comprising: a radio frequency (RF) input port for an RF input signal; an RF output port for an RF output signal; a first RF spiral inductor formed from the third metal layer, the first RF spiral inductor having a first input end, a first output end, and an interior area defined by an innermost turn of its spiral, the first input end coupled to the RF input port; a first capacitor realized as an integrated passive device (IPD) formed from the second metal layer, the first capacitor in parallel with the first RF spiral inductor; a second RF spiral inductor formed from the third metal layer, the second RF spiral inductor having a second input end and a second output end, the second input end coupled to the first output end of the first RF spiral inductor, and the second output end coupled to the RF output port; a second capacitor realized as an IPD formed from the second metal layer, the second capacitor in parallel with the second RF spiral inductor; and an inductive RF coupler formed from the first metal layer, the inductive RF coupler comprising a coupling section having at least one turn for magnetic coupling with the first RF spiral inductor, the coupling section residing completely within the interior area of the first RF spiral inductor.