A passive filter circuit filters an input signal to attenuate an undesired frequency. The passive filter circuit includes a first stage and a second stage. The input to the first stage is the input signal. The first stage includes a first inductor and a first branch coupled to the output of the first inductor. The first branch includes a first capacitor and a second inductor. The first stage is coupled to the second stage. The second stage includes a third inductor and a second branch coupled to the output of the third inductor. The second branch includes a second capacitor. Other embodiments are also described and claimed.
申请公布号
US8565709(B2)
申请公布日期
2013.10.22
申请号
US201113023902
申请日期
2011.02.09
申请人
MULLINS SCOTT P.;JOHNSON TIMOTHY M.;PEREZ YEHONATAN;APPLE INC.
发明人
MULLINS SCOTT P.;JOHNSON TIMOTHY M.;PEREZ YEHONATAN