Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wideband quadrature error detection and correction

A quadrature phase and parameter correction technology, applied in the field of electronic equipment, can solve problems such as dropped calls

Active Publication Date: 2015-02-11
ANALOG DEVICES INC
View PDF5 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, taking the transmitter offline to complete the calibration process is undesirable as it can lead to dropped calls and other undesirable side effects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wideband quadrature error detection and correction
  • Wideband quadrature error detection and correction
  • Wideband quadrature error detection and correction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The following detailed description of certain embodiments presents various descriptions of specific embodiments of the invention. However, other embodiments of the invention can be implemented in many different ways, as defined and covered by the claims. In this specification, reference is made to the drawings, wherein like reference numerals indicate like elements.

[0034]As described herein, a transmission module is provided that includes a transmitter, a loopback receiver, a calibration module, a switch module, and a QEC controller. A switch module may be located between the output of the transmitter, the output of the calibration module, and the input of the loopback receiver. In calibration mode, the switch module provides a communication path between the calibration module and the loopback receiver. The loopback receiver processes the data signal received from the self-calibration module and outputs the processed data signal to the QEC controller. Using the pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A transmission module is provided that includes a transmitter, a loopback receiver, and a QEC controller. The QEC controller identifies quadrature imbalance in the transmitter based at least one a comparison of the data signals at the output of the loopback receiver with data signals at the input of the transmitter. Based on the comparison, the QEC controller can adjust one or more characteristics of the transmitter to correct quadrature errors in the transmitter.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Application No. 61 / 858534, filed July 25, 2013, and is related to U.S. Application No. 13 / 951341, filed July 25, 2013; filed March 15, 2013 U.S. Provisional Application No. 61 / 786,393, filed March 15, 2013; U.S. Provisional Application No. 61 / 786,469, filed March 15, 2013; and U.S. Application No. 13 / 897,719, filed May 20, 2013, each of which passed Incorporated herein by reference. technical field [0003] Embodiments of the present disclosure relate to electronic devices, and more particularly, in one or more embodiments, to wireless transmitters. Background technique [0004] Transmitters for wireless infrastructure such as cellular base stations have traditionally been implemented using superheterodyne or complex intermediate frequency (IF) architectures. Using a direct-conversion architecture instead of a superheterodyne architecture to implement a wireless tr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04
CPCH04B17/11H04B1/0475
Inventor R·霍尔米斯S·R·巴尔A·蒙塔尔沃D·J·迈克劳瑞恩M·迈考米克
Owner ANALOG DEVICES INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com