公开(公告)号：US20160065179A1

公开(公告)日：2016-03-03

申请号：US14471608

申请日：2014-08-28

Applicant: QUALCOMM Incorporated

Inventor： Mazhareddin TAGHIVAND ,  Tong ZHANG ,  Mohammad Mahdi GHAHRAMANI

IPC: H03H11/12 ,  H03H11/22

CPC classification number: H03H11/1204 ,  H03H7/0153 ,  H03H7/21 ,  H03H11/22 ,  H03H17/0273 ,  H03H2218/04

Abstract: Certain aspects of the present disclosure provide circuits for generating high accuracy millimeter wave or radio frequency (RF) wideband in-phase (I) and quadrature (Q) oscillating signals having acceptable amplitude and phase mismatch over process, voltage, and temperature (PVT) variations with reduced cost, area, and power consumption. In one example apparatus, a polyphase filter having a first stage and a second stage is provided. Each stage comprises resistive elements and capacitive elements. Certain aspects of the present disclosure provide for intentional resistive and/or capacitive value mismatch between the resistive or capacitive values of one or multiple stages such that the phase mismatch between the resulting I and Q signals may be reduced without degrading the amplitude mismatch. Certain aspects of the present disclosure provide for replacing the resistive elements in at least one stage with transistors operating in the triode region, where the on-resistance is controlled by a feedback network.

Abstract translation: 本公开的某些方面提供用于产生在过程，电压和温度（PVT）上具有可接受的幅度和相位失配的高精度毫米波或射频（RF）宽带同相（I）和正交（Q）振荡信号的电路， 降低成本，面积和功耗的变化。 在一个示例性装置中，提供具有第一阶段和第二阶段的多相滤波器。 每个级包括电阻元件和电容元件。 本公开的某些方面提供一个或多个级的电阻或电容值之间的有意的电阻和/或电容值失配，使得可以在不降低幅度失配的情况下减小所产生的I和Q信号之间的相位失配。 本公开的某些方面提供了在三极管区域中操作的晶体管在至少一个级中替换电阻元件，其中导通电阻由反馈网络控制。