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工業技術研究院

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技術名稱: 振幅校正電路及其應用的信號校正電路

技術簡介

一種振幅校正電路,包括相移電路、平均電路、以及放大電路。相移電路根據多個輸入信號產生多個相移輸出信號,這些相移輸出信號包括M個第一相移信號以及M個第二相移信號,M個第一相移信號之間具有相位差Δφ,M個第二相移信號之間具有相位差Δφ,M個第一相移信號與M個第二相移信號極性相反,其中M為正整數。平均電路用以根據這些輸入信號以及這些相移輸出信號的加權總和產生振幅增益,平均電路以單極性電源供電。放大電路根據振幅增益調整這些輸入信號的振幅,產生多個校正後信號。

Abstract

An amplitude calibration circuit is provided. The amplitude calibration circuit includes a phase shifting circuit, an averaging circuit, and an amplification circuit. The phase shifting circuit generates multiple phase shifted output signals, including M first phase shifted signals and M second phase shifted signals, according to multiple input signals. The M first phase shifted signals have a phase difference Δφ. The M second phase shifted signals have the phase difference Δφ. The M first phase shifted signals and the M second phase shifted signals are opposite in polarity. M is a positive integer. The averaging circuit generates an amplitude gain according to a weighted sum of the input signals and the phase shifted output signals. The averaging circuit is supplied by a single polarity power supply. The amplification circuit adjusts the amplitude of the input signals according to the amplitude gain.

技術規格

輸出電壓1Vpp;周期誤差0.5%~2%

Technical Specification

The output voltage 1Vpp; periodic error of 0.5% to 2%

技術特色

一種振幅校正電路,包括相移電路、平均電路、以及放大電路。相移電路根據多個輸入信號產生多個相移輸出信號,這些相移輸出信號包括M個第一相移信號以及M個第二相移信號,M個第一相移信號之間具有相位差Δφ,M個第二相移信號之間具有相位差Δφ,M個第一相移信號與M個第二相移信號極性相反,其中M為正整數。平均電路用以根據這些輸入信號以及這些相移輸出信號的加權總和產生振幅增益,平均電路以單極性電源供電。放大電路根據振幅增益調整這些輸入信號的振幅,產生多個校正後信號。

應用範圍

光學尺;旋轉編碼器;干涉儀

接受技術者具備基礎建議(設備)

光電半導體製程產線

接受技術者具備基礎建議(專業)

none

技術分類 先進檢測與感測儀器- 檢測/設備技術

聯絡資訊

聯絡人:陳建文 量測技術發展中心

電話:+886-3-5743886 或 Email:chaoster@itri.org.tw

客服專線:+886-800-45-8899

傳真:+886-3-5722383

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