公开(公告)号：EP2446532B1

公开(公告)日：2016-08-10

申请号：EP09785970.6

申请日：2009-06-26

Applicant: Smartcom Bulgaria Ad

Inventor： UZUNOV, Ivan Stefanov ,  STATEV, Peter, Borissov ,  BOYANOV, Buen, Dimov ,  BRADVAROV, Rumen, Mihajlov

IPC: H03H11/04

CPC classification number: H03H9/545 ,  H03H11/1208

公开(公告)号：EP2446532A1

公开(公告)日：2012-05-02

申请号：EP09785970.6

申请日：2009-06-26

Applicant: Smartcom Bulgaria Ad

Inventor： UZUNOV, Ivan Stefanov ,  STATEV, Peter, Borissov ,  BOYANOV, Buen, Dimov ,  BRADVAROV, Rumen, Mihajlov

IPC: H03H11/04

CPC classification number: H03H9/545 ,  H03H11/1208

Abstract: A circuit and method for filtering a signal. An amplifie (330) r receives an input signal (310) and generates a differential output signal. A first resonator (340) having series and parallel resonant frequencies is connected to the positive output port (335) of the amplifier. A second resonato (350) r having series and parallel resonant frequencies is connected to the negative output port (336) of the amplifier. The first and second resonators are coupled at a connection point (340). A buffering device (370) receives the combined outputs of the resonators and outputs a filtered signal. The filtering method receives signals and passes them through the elements of the filter circuit to generate a filtered output signal.