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Double integrator pulse wave shaper apparatus, system and method

A pulse shaper, pulse wave technology, applied in the direction of pulse shaping, pulse technology, pulse generation, etc.

Active Publication Date: 2017-01-04
NXP USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Signal filtering to reduce radiated emissions requires tuning the filtering based on different frequencies, and the use of look-up tables is limited to digital signal generation

Method used

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  • Double integrator pulse wave shaper apparatus, system and method
  • Double integrator pulse wave shaper apparatus, system and method
  • Double integrator pulse wave shaper apparatus, system and method

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Embodiment Construction

[0017] A pulse wave shaper according to one embodiment is configured to convert a square pulse wave into a parabolic wave to reduce radiation emission of the pulse wave when the pulse wave is transmitted via the bus. The pulse wave shaper implements two integrators in series to transform the pulse wave. The first integrator receives the square wave form from the pulse wave generator. The first integrator converts the pulse wave into a sawtooth pulse wave form and transmits the sawtooth pulse wave form to the second integrator. The second integrator converts the pulse wave into a parabolic pulse wave form. The parabolic pulse wave form is then transmitted over the bus. The radiation emission produced by the parabolic pulse wave form is less than the radiation emission from prior art pulse waves such as square pulse waves.

[0018] now refer to figure 1 , figure 1 An exemplary bus signal generation system 100 according to one embodiment of the present invention is shown. I...

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PUM

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Abstract

A pulse wave shaper for reducing the radiation emission level is disclosed. The pulse wave shaper, comprises a first integrator, wherein the first integrator receives a first pulse wave and generates a second pulse wave and a second integrator coupled to the first integrator, wherein the second integrator receives the second pulse wave and generates a third pulse wave with a pulse wave amplitude. The first pulse wave comprises a first pulse wave shape, the second pulse wave comprises a second pulse wave shape, and the third pulse wave comprises a third pulse wave shape. The third pulse wave shape, when transmitted over a bus, generates a reduced radiation emission level.

Description

technical field [0001] The present invention relates to a pulse wave shaper circuit, and more particularly to a dual integrator wave shaper circuit for a bus signal generation system. Background technique [0002] A bus, also known as an electrical or communication bus, is a physical electrical interface where more than one device shares the same electrical connection. Buses are common in information technology systems, telecommunications systems, commercial electronics, and vehicular systems. Twisted pair is a two-wire electrical bus and is especially suitable for use in vehicle systems because twisted pair is more robust and easier to install and configure. Various communication protocols may be used on such electrical buses and used to provide communication between electronic components located throughout the vehicle. Specifically, an airbag system has many types of components that can be connected to a network. Airbag systems require robust and fail-safe communication...

Claims

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Application Information

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IPC IPC(8): H03K4/56G06F13/40
CPCG06F13/4022H03K4/56H03K5/01H04B14/023
Inventor 杰罗姆·J·卡斯特斯
Owner NXP USA INC
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