公开(公告)号：US20040116085A1

公开(公告)日：2004-06-17

申请号：US10654606

申请日：2003-09-04

申请人： Samsung Electronics Co., Ltd.

发明人： Mi-hyun Son ,  Popov Oleg

IPC分类号： H04B001/00 ,  H04B001/26 ,  H04B015/00

CPC分类号： H04B1/30

摘要： A direct conversion receiver includes a local oscillator for generating a sinusoid, a mixer for receiving an incoming signal and for mixing the incoming signal with the sinusoid, an analog-to-digital converter for converting the mixed analog signal into a digital signal, and a digital signal processor for outputting the digital signal so that an I-channel signal and a Q-channel signal are output separately and for transmitting to the local oscillator a phase control signal that determines the phase of a sinusoid to be generated by the local oscillator. The direct conversion receiver may further include a low noise amplifier for amplifying the incoming while preventing noise included in the input signal from being amplified, a baseband amplifier for amplifying the mixed analog signal in a baseband, and a baseband low pass filter for removing low frequency noise from a signal amplified by the baseband amplifier.

摘要翻译： 直接转换接收机包括用于产生正弦波的本地振荡器，用于接收输入信号并将输入信号与正弦波混频的混频器，用于将混合模拟信号转换为数字信号的模数转换器，以及 数字信号处理器，用于输出数字信号，使得I信道信号和Q信道信号被单独地输出，并且用于向本地振荡器发送确定由本地振荡器产生的正弦波的相位的相位控制信号。 直接转换接收器还可以包括用于放大输入的低噪声放大器，同时防止输入信号中包括的噪声被放大，用于放大基带中的混合模拟信号的基带放大器和用于去除低频的基带低通滤波器 由基带放大器放大的信号产生的噪声。