WIRELESS RECEPTION DEVICE AND WIRELESS RECEPTION METHOD
PROBLEM TO BE SOLVED: To provide a reception apparatus that does not require an A/D converter for each frequency band for receiving signals of a plurality of frequency bands.SOLUTION: A wireless reception device includes a first frequency conversion unit that down-converts a wireless frequency signa...
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creator | NAKAMURA SHOICHI FUKAZAWA KOJI |
description | PROBLEM TO BE SOLVED: To provide a reception apparatus that does not require an A/D converter for each frequency band for receiving signals of a plurality of frequency bands.SOLUTION: A wireless reception device includes a first frequency conversion unit that down-converts a wireless frequency signal of a first frequency band at a first predetermined frequency and outputs a first analog signal, a second frequency conversion unit that down-converts a wireless frequency signal of a second frequency band at a second predetermined frequency and outputs a second analog signal, a combining unit that combines the first analog signal and the second analog signal to output one combined analog signal, an A/D conversion unit that A/D-converts the combined analog signal and outputs a combined digital signal, and a separating unit that separates the combined digital signal into a digital signal of the first frequency band and a digital signal of the second frequency band by frequency shift processing and outputs the signals.SELECTED DRAWING: Figure 1
【課題】複数の周波数バンドの信号の受信に周波数バンドごとのA/D変換器を必要としない受信装置を提供すること。【解決手段】第1の周波数バンドの無線周波数信号を第1の所定周波数でダウンコンバートして第1のアナログ信号を出力する第1の周波数変換部と、第2の周波数バンドの無線周波数信号を第2の所定周波数でダウンコンバートして第2のアナログ信号を出力する第2の周波数変換部と、第1のアナログ信号と前記第2のアナログ信号とを合成して1つの合成アナログ信号を出力する合成部と、合成アナログ信号をA/D変換して合成デジタル信号を出力するA/D変換部と、合成デジタル信号を周波数シフト処理することにより、第1の周波数バンドのデジタル信号と第2の周波数バンドのデジタル信号とに分離してそれぞれを出力する分離部とを備える。【選択図】図1 |
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【課題】複数の周波数バンドの信号の受信に周波数バンドごとのA/D変換器を必要としない受信装置を提供すること。【解決手段】第1の周波数バンドの無線周波数信号を第1の所定周波数でダウンコンバートして第1のアナログ信号を出力する第1の周波数変換部と、第2の周波数バンドの無線周波数信号を第2の所定周波数でダウンコンバートして第2のアナログ信号を出力する第2の周波数変換部と、第1のアナログ信号と前記第2のアナログ信号とを合成して1つの合成アナログ信号を出力する合成部と、合成アナログ信号をA/D変換して合成デジタル信号を出力するA/D変換部と、合成デジタル信号を周波数シフト処理することにより、第1の周波数バンドのデジタル信号と第2の周波数バンドのデジタル信号とに分離してそれぞれを出力する分離部とを備える。【選択図】図1</description><language>eng ; jpn</language><subject>ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; TRANSMISSION</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181101&DB=EPODOC&CC=JP&NR=2018170716A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76418</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181101&DB=EPODOC&CC=JP&NR=2018170716A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>NAKAMURA SHOICHI</creatorcontrib><creatorcontrib>FUKAZAWA KOJI</creatorcontrib><title>WIRELESS RECEPTION DEVICE AND WIRELESS RECEPTION METHOD</title><description>PROBLEM TO BE SOLVED: To provide a reception apparatus that does not require an A/D converter for each frequency band for receiving signals of a plurality of frequency bands.SOLUTION: A wireless reception device includes a first frequency conversion unit that down-converts a wireless frequency signal of a first frequency band at a first predetermined frequency and outputs a first analog signal, a second frequency conversion unit that down-converts a wireless frequency signal of a second frequency band at a second predetermined frequency and outputs a second analog signal, a combining unit that combines the first analog signal and the second analog signal to output one combined analog signal, an A/D conversion unit that A/D-converts the combined analog signal and outputs a combined digital signal, and a separating unit that separates the combined digital signal into a digital signal of the first frequency band and a digital signal of the second frequency band by frequency shift processing and outputs the signals.SELECTED DRAWING: Figure 1
【課題】複数の周波数バンドの信号の受信に周波数バンドごとのA/D変換器を必要としない受信装置を提供すること。【解決手段】第1の周波数バンドの無線周波数信号を第1の所定周波数でダウンコンバートして第1のアナログ信号を出力する第1の周波数変換部と、第2の周波数バンドの無線周波数信号を第2の所定周波数でダウンコンバートして第2のアナログ信号を出力する第2の周波数変換部と、第1のアナログ信号と前記第2のアナログ信号とを合成して1つの合成アナログ信号を出力する合成部と、合成アナログ信号をA/D変換して合成デジタル信号を出力するA/D変換部と、合成デジタル信号を周波数シフト処理することにより、第1の周波数バンドのデジタル信号と第2の周波数バンドのデジタル信号とに分離してそれぞれを出力する分離部とを備える。【選択図】図1</description><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>TRANSMISSION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDAP9wxy9XENDlYIcnV2DQjx9PdTcHEN83R2VXD0c1HAIuvrGuLh78LDwJqWmFOcyguluRmU3FxDnD10Uwvy41OLCxKTU_NSS-K9AowMDC0MzQ3MDc0cjYlSBACcfyjG</recordid><startdate>20181101</startdate><enddate>20181101</enddate><creator>NAKAMURA SHOICHI</creator><creator>FUKAZAWA KOJI</creator><scope>EVB</scope></search><sort><creationdate>20181101</creationdate><title>WIRELESS RECEPTION DEVICE AND WIRELESS RECEPTION METHOD</title><author>NAKAMURA SHOICHI ; FUKAZAWA KOJI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2018170716A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2018</creationdate><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>TRANSMISSION</topic><toplevel>online_resources</toplevel><creatorcontrib>NAKAMURA SHOICHI</creatorcontrib><creatorcontrib>FUKAZAWA KOJI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NAKAMURA SHOICHI</au><au>FUKAZAWA KOJI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>WIRELESS RECEPTION DEVICE AND WIRELESS RECEPTION METHOD</title><date>2018-11-01</date><risdate>2018</risdate><abstract>PROBLEM TO BE SOLVED: To provide a reception apparatus that does not require an A/D converter for each frequency band for receiving signals of a plurality of frequency bands.SOLUTION: A wireless reception device includes a first frequency conversion unit that down-converts a wireless frequency signal of a first frequency band at a first predetermined frequency and outputs a first analog signal, a second frequency conversion unit that down-converts a wireless frequency signal of a second frequency band at a second predetermined frequency and outputs a second analog signal, a combining unit that combines the first analog signal and the second analog signal to output one combined analog signal, an A/D conversion unit that A/D-converts the combined analog signal and outputs a combined digital signal, and a separating unit that separates the combined digital signal into a digital signal of the first frequency band and a digital signal of the second frequency band by frequency shift processing and outputs the signals.SELECTED DRAWING: Figure 1
【課題】複数の周波数バンドの信号の受信に周波数バンドごとのA/D変換器を必要としない受信装置を提供すること。【解決手段】第1の周波数バンドの無線周波数信号を第1の所定周波数でダウンコンバートして第1のアナログ信号を出力する第1の周波数変換部と、第2の周波数バンドの無線周波数信号を第2の所定周波数でダウンコンバートして第2のアナログ信号を出力する第2の周波数変換部と、第1のアナログ信号と前記第2のアナログ信号とを合成して1つの合成アナログ信号を出力する合成部と、合成アナログ信号をA/D変換して合成デジタル信号を出力するA/D変換部と、合成デジタル信号を周波数シフト処理することにより、第1の周波数バンドのデジタル信号と第2の周波数バンドのデジタル信号とに分離してそれぞれを出力する分離部とを備える。【選択図】図1</abstract><oa>free_for_read</oa></addata></record> |
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subjects | ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION |
title | WIRELESS RECEPTION DEVICE AND WIRELESS RECEPTION METHOD |
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