公开(公告)号：US20150071392A1

公开(公告)日：2015-03-12

申请号：US14389259

申请日：2012-03-30

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： Chow Loong Cheah ,  Kar boon Oung ,  V. C. Prakash V K Chacko

IPC: H04B1/12

CPC classification number: H04B1/123 ,  H03D7/165 ,  H03D7/18 ,  H04B1/10 ,  H04B1/30 ,  H04B2001/305

Abstract: An apparatus and method for reducing FM audio artifacts in a receiver are provided. A direct conversion radio frequency (RF) receiver converts an analog FM signal into a phase shifted digital low IF signal. A digital controller coupled to the analog FM receiver provides adaptive frequency translation for different channel spacing and provides adaptive low IF configuration through the different channel spacing, thereby suppressing audio artifacts.

Abstract translation: 提供了用于减少接收机中的FM音频伪像的装置和方法。 直接转换射频（RF）接收机将模拟FM信号转换为相移数字低IF信号。 耦合到模拟FM接收机的数字控制器为不同的信道间隔提供自适应频率转换，并通过不同的信道间隔提供自适应低IF配置，从而抑制音频伪像。