Supercharge Your Innovation With Domain-Expert AI Agents!

Test and measurement instruments including digitizers and linear time period filters

一种周期滤波器、线性时间的技术，应用在数字变量显示、数字变量/波形显示、仪器等方向，能够解决固有噪声损失、信噪比降级等问题

Active Publication Date: 2021-03-09
TEKTRONIX INC
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A significant disadvantage of this technique is the inherent noise penalty (penalty) when digitizing an arbitrary input signal whose frequency content can be routed to only one ADC channel
The recombined output will contain signal energy from only one ADC, but noise energy from all ADCs, degrading the signal-to-noise ratio (SNR)

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
  • Test and measurement instruments including digitizers and linear time period filters
  • Test and measurement instruments including digitizers and linear time period filters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] figure 1 is a block diagram of an ADC system for test and measurement instruments using harmonic mixing. In this embodiment, the instrument includes a splitter 10 configured to split an input signal 12 having a specific frequency spectrum into a plurality of split signals 14 and 16 , each split signal comprising substantially the entire spectrum of the input signal 12 . The splitter 10 may be any kind of circuit that can split the input signal 12 into a plurality of signals. For example, splitter 10 may be a resistive voltage divider. Accordingly, substantially all frequency components of the input signal 12 may be present in each of the split signals 14 and 16 . However, depending on the number of paths, harmonic signals used, etc., the frequency response for the various split signals of splitter 10 may be different.

[0014] Split signals 14 and 16 are inputs to harmonic mixers 18 and 24, respectively. Harmonic mixer 18 is configured to mix split signal 14 with ha...

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

The present invention discloses a test and measurement instrument including a digitizer and a linear time period filter. A test and measurement instrument comprising: a splitter configured to split an input signal having a specific bandwidth into a plurality of split signals, each split signal comprising substantially the entire bandwidth of the input signal; a plurality of harmonic mixers, Each harmonic mixer is configured to mix an associated split signal of the plurality of split signals with an associated harmonic signal to generate an associated mixed signal; a plurality of digitizers, each digitizer configured to pair digitizing a mixed signal of an associated harmonic mixer of the plurality of harmonic mixers; and a linear time-periodic filter configured to receive a digitized mixed signal from each of the digitizers and output a time-interleaved signal . A first harmonic of at least one harmonic signal associated with the harmonic mixer is at a different sampling rate than at least one of the digitizers.

Description

technical field [0001] The present invention relates to test and measurement instruments and more particularly to test and measurement instruments including one or more asynchronous time-interleaved digitizers that use harmonic mixing for noise reduction. Background technique [0002] The available bandwidth of test and measurement instruments, such as digital oscilloscopes, can be limited by the analog-to-digital converter (ADC) used to digitize the input signal. The available bandwidth of the ADC can be limited to the lesser of half the maximum sampling rate of the ADC or the analog bandwidth. Various techniques have been developed to digitize higher bandwidth signals using existing ADCs. [0003] For example, synchronous time interleaving can be used to achieve effectively higher sampling rates. Multiple ADCs can sample the input signal offset in time within a single sampling period. The digitized outputs can be combined together for effectively doubling the sampling r...

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 Patents(China)
IPC IPC(8): G01R13/02
CPCG01R13/0209G01R13/0236G01R13/0272G01R19/2506H03M1/121H03M1/1215
Inventor D.G.克尼林
Owner TEKTRONIX INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com