中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

4 records (took 0.134 seconds)

    Small area and low power IIR filter structure
    1.
    发明授权
    Small area and low power IIR filter structure 有权

    公开(公告)号：US09985608B2

    公开(公告)日：2018-05-29

    申请号：US14863901

    申请日：2015-09-24

    Applicant: ANALOG DEVICES GLOBAL

    Inventor： Sudarshan Onkar ,  Philip P. E. Quinlan ,  Kenneth J. Mulvaney

    IPC: H03H17/02 ,  H03H17/04

    CPC classification number: H03H17/0283 ,  H03H17/04 ,  H03H2017/0245 ,  H03H2017/0488

    Abstract: Embodiments of the present disclosure provide a digital filter module for use in receivers, particularly suitable for use in a narrow-band electromagnetic receiver. Design of the module is based on a recognition that providing to the module samples of a signal received by a receiver and sampled at a sampling frequency equal to four times the intermediate frequency of the receiver, eliminating zeros in the filter, and implementing the filter module as a resource-shared second-order filter structure that includes two sections advantageously enables saving some hardware components, particularly some multipliers and adders, in implementing a versatile digital filter module that can function either as two real filters or one complex filter. In this manner, substantial reduction of area and power consumption of the filter module may be achieved, while maintaining sufficiently high filtering performance.

    Automatic gain control (AGC) assisted carrier offset correction
    2.
    发明授权
    Automatic gain control (AGC) assisted carrier offset correction 有权

    公开(公告)号：US10536308B2

    公开(公告)日：2020-01-14

    申请号：US15784747

    申请日：2017-10-16

    Applicant: Analog Devices Global Unlimited Company

    Inventor： Sudarshan Onkar ,  Michael O'Brien

    IPC: H04L27/00 ,  H04B1/16

    Abstract: In a communication receiver circuit, an amplifier circuit can include an adjustable gain. A signal corresponding to a portion of a transmitted frame can be received, and a gain of the receiver circuit can be adjusted such as automatically, and such adjustment can be referred to as automatic gain control (AGC). An offset correction can be performed to adjust for an error in a received representation of a transmitted carrier, and such offset correction can be referred to as carrier frequency offset (CFO) correction. A portion of the received signal can be dynamically allocated between AGC and CFO correction, such as allocating a longer duration to CFO correction when AGC results in a relatively higher receiver gain, and allocating a shorter duration to CFO correction when AGC results in a relatively lower receiver gain.

Patent Agency Ranking