翻訳と辞書 Words near each other ・ Product change notification ・ Product churning ・ Product cipher ・ Product classification ・ Product code ・ Product concept ・ Product control ・ Product cost management ・ Product data management ・ Product data record ・ Product defect ・ Product demonstration ・ Product description ・ Product design ・ Product design specification ・ Product detector ・ Product Development and Management Association ・ Product Development and Systems Engineering Consortium ・ Product Development Technologies ・ Product differentiation ・ Product displacement ・ Product distribution ・ Product ecosystem theory ・ Product engineering ・ Product Engineering Company ・ Product family engineering ・ Product feed ・ Product finder ・ Product fit analysis ・ Product flow diagram Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Product detector ： ウィキペディア英語版 Product detector A product detector is a type of demodulator used for AM and SSB signals. Rather than converting the envelope of the signal into the decoded waveform like an envelope detector, the product detector takes the product of the modulated signal and a local oscillator, hence the name. A product detector is a frequency mixer. Product detectors can be designed to accept either IF or RF frequency inputs. A product detector which accepts an IF signal would be used as a demodulator block in a superheterodyne receiver, and a detector designed for RF can be combined with an RF amplifier and a low-pass filter into a direct-conversion receiver. ==A simple product detector== The simplest form of product detector mixes (or heterodynes) the RF or IF signal with a locally derived carrier (the Beat Frequency Oscillator, or BFO) to produce an audio frequency copy of the original audio signal and a mixer product at twice the original RF or IF frequency. This high-frequency component can then be filtered out, leaving the original audio frequency signal. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Product detector」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.