公开(公告)号：US20150139369A1

公开(公告)日：2015-05-21

申请号：US14083916

申请日：2013-11-19

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： PAUL H. GAILUS ,  LAWRENCE M. ECKLUND

IPC: H04B1/10

CPC classification number: H04B1/10 ,  H04B1/525

Abstract: A method and apparatus for compensation of noise in a Radio Frequency Identification (RFID) device through modulation of a received signal is described. The method includes determining an amplitude signal proportional to an amplitude of a transmitter signal and associated noise; processing the amplitude signal to derive a correction signal; and modulating a received signal during a receive period with the correction signal to substantially remove the associated noise from the received signal. An RFID device and an RFID transceiver integrated circuit (IC) are also described.

Abstract translation: 描述了通过对接收信号的调制来补偿射频识别（RFID）设备中的噪声的方法和装置。 该方法包括确定与发射机信号的幅度和相关噪声成比例的振幅信号; 处理振幅信号以导出校正信号; 以及在接收周期期间利用所述校正信号调制接收到的信号，以基本上从接收到的信号中除去相关联的噪声。 还描述了RFID设备和RFID收发器集成电路（IC）。

公开(公告)号：US20140155011A1

公开(公告)日：2014-06-05

申请号：US13690710

申请日：2012-11-30

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： LAWRENCE M. ECKLUND ,  GREGORY J. BUCHWALD ,  STEPHEN L. KUFFNER

IPC: H04B1/16

CPC classification number: H04B1/16 ,  H04B1/0025

Abstract: A mixer, a receiver, and a method provide dynamic sub-sampling mixer which adjust a sub-sampling rate based on power drain and performance. A mixer includes mixer circuitry receiving an input of a Radio Frequency (RF) input signal and providing an output of a baseband signal of the RF input sampled at a sub-sampling rate, baseband parametric control circuitry receiving the baseband signal and measuring at least one parametric value of the baseband signal, and sampling period control circuitry receiving the at least one parametric value and adjusting the sub-sampling rate based thereon, the sub-sampling rate or ratio is adjusted minimize power drain while ensuring performance of the at least one parametric value is satisfying a predetermined level.

Abstract translation: 混频器，接收器和方法提供动态子采样混频器，其基于功率消耗和性能来调整子采样率。 混合器包括混合器电路，其接收射频（RF）输入信号的输入并提供以亚采样率采样的RF输入的基带信号的输出，基带参数控制电路接收基带信号并测量至少一个 基带信号的参数值和接收到至少一个参数值的采样周期控制电路并且基于此调整子采样率，调整子采样率或比率使功率消耗最小化，同时确保至少一个参数的性能 值满足预定水平。