公开(公告)号：US20070060093A1

公开(公告)日：2007-03-15

申请号：US11227796

申请日：2005-09-15

Applicant: Donald Kerth ,  Brian Green ,  Augusto Marques

Inventor： Donald Kerth ,  Brian Green ,  Augusto Marques

IPC: H04B1/10

CPC classification number: H04W52/028 ,  H04B1/16 ,  Y02D70/40

Abstract: Image rejection factors are calibrated for a receiver circuit (106) during an initialization period. The image rejection factors are stored in a quasi non-volatile memory (124) associated with the receiver circuit (106). The quasi non-volatile memory (124) is powered from a first source (VDD A) during a first receiver mode and from a second source (VIO) during a second receiver mode.

Abstract translation: 在初始化期间，针对接收器电路（106）校准图像抑制因子。 图像抑制因子被存储在与接收器电路（106）相关联的准非易失性存储器（124）中。 准非易失性存储器（124）在第一接收器模式期间由第一源（V SUB DD A）供电，并且在第一接收器模式期间从第二源（V SUB IO） 第二接收机模式。

公开(公告)号：US20050143043A1

公开(公告)日：2005-06-30

申请号：US10748425

申请日：2003-12-30

Applicant: Donald Kerth

Inventor： Donald Kerth

IPC: H04B1/28 ,  H04B1/26 ,  H04B1/16 ,  H04B15/00

CPC classification number: H04B1/0007 ,  H04B1/28

Abstract: A chopped intermediate frequency (IF) wireless receiver is disclosed. The wireless receiver includes a local oscillator (LO), a first and a second mixers, an LO frequency control module, an IF filter, a digital down converter and a down conversion controller. The LO provides a local oscillating signal to the first and second mixers. The first and second mixers-converts a received radio frequency signal to an in-phase IF signal and a quadrature IF signal, respectively. The LO frequency control module alternately down converts a channel frequency by changing an oscillation frequency of the LO. Coupled to the digital down converter, the down conversion controller adjusts a complex sine wave within the digital down converter while the in-phase IF signal and the quadrature IF signal are being down-converted by the digital down converter to a baseband signal.

Abstract translation: 公开了一种斩波中频（IF）无线接收机。 无线接收机包括本地振荡器（LO），第一和第二混频器，LO频率控制模块，IF滤波器，数字下变频器和下变频控制器。 LO向第一和第二混合器提供本地振荡信号。 第一和第二混频器将接收到的射频信号分别转换为同相IF信号和正交IF信号。 LO频率控制模块通过改变LO的振荡频率来交替地下变频通道频率。 耦合到数字下变频器，下变频控制器调整数字下变频器内的复正弦波，同时IF信号和正交IF信号由数字下变频器下变频为基带信号。