Systems and methods for determining antenna impedance
Systems and methods for determining antenna impedance are provided. The method includes generating, by a signal source coupled to the antenna, a radio frequency (RF) signal, applying the RF signal to a directional coupler, and mixing, by a first mixer, a first signal from the directional coupler wit...
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| creator | WILLIAM DAVID ANDERSON |
| description | Systems and methods for determining antenna impedance are provided. The method includes generating, by a signal source coupled to the antenna, a radio frequency (RF) signal, applying the RF signal to a directional coupler, and mixing, by a first mixer, a first signal from the directional coupler with a signal, wherein the first signal corresponds to a reflected power from the antenna. The method further includes mixing, by a second mixer, a second signal with the signal, wherein the second signal is offset from the first signal by ninety degrees. The method further includes outputting, by a first lower pass filter (LPF) coupled to an output of the first mixer, a real part of a reflection coefficient of the antenna and outputting, by a second lower pass filter (LPF) coupled to an output of the second mixer, an imaginary part of the reflection coefficient. |
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The method includes generating, by a signal source coupled to the antenna, a radio frequency (RF) signal, applying the RF signal to a directional coupler, and mixing, by a first mixer, a first signal from the directional coupler with a signal, wherein the first signal corresponds to a reflected power from the antenna. The method further includes mixing, by a second mixer, a second signal with the signal, wherein the second signal is offset from the first signal by ninety degrees. The method further includes outputting, by a first lower pass filter (LPF) coupled to an output of the first mixer, a real part of a reflection coefficient of the antenna and outputting, by a second lower pass filter (LPF) coupled to an output of the second mixer, an imaginary part of the reflection coefficient.</description><language>chi ; eng</language><subject>MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; TESTING</subject><creationdate>2014</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=20140115&DB=EPODOC&CC=CN&NR=103513108A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140115&DB=EPODOC&CC=CN&NR=103513108A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WILLIAM DAVID ANDERSON</creatorcontrib><title>Systems and methods for determining antenna impedance</title><description>Systems and methods for determining antenna impedance are provided. 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The method further includes outputting, by a first lower pass filter (LPF) coupled to an output of the first mixer, a real part of a reflection coefficient of the antenna and outputting, by a second lower pass filter (LPF) coupled to an output of the second mixer, an imaginary part of the reflection coefficient.</description><subject>MEASURING</subject><subject>MEASURING ELECTRIC VARIABLES</subject><subject>MEASURING MAGNETIC VARIABLES</subject><subject>PHYSICS</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDANriwuSc0tVkjMS1HITS3JyE8pVkjLL1JISS1JLcrNzMvMSwfKlaTm5SUqZOYWpKYk5iWn8jCwpiXmFKfyQmluBkU31xBnD93Ugvz41OKCxOTUvNSSeGc_QwNjU0NjQwMLR2Ni1AAAfnQtTw</recordid><startdate>20140115</startdate><enddate>20140115</enddate><creator>WILLIAM DAVID ANDERSON</creator><scope>EVB</scope></search><sort><creationdate>20140115</creationdate><title>Systems and methods for determining antenna impedance</title><author>WILLIAM DAVID ANDERSON</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN103513108A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2014</creationdate><topic>MEASURING</topic><topic>MEASURING ELECTRIC VARIABLES</topic><topic>MEASURING MAGNETIC VARIABLES</topic><topic>PHYSICS</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>WILLIAM DAVID ANDERSON</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>WILLIAM DAVID ANDERSON</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Systems and methods for determining antenna impedance</title><date>2014-01-15</date><risdate>2014</risdate><abstract>Systems and methods for determining antenna impedance are provided. The method includes generating, by a signal source coupled to the antenna, a radio frequency (RF) signal, applying the RF signal to a directional coupler, and mixing, by a first mixer, a first signal from the directional coupler with a signal, wherein the first signal corresponds to a reflected power from the antenna. The method further includes mixing, by a second mixer, a second signal with the signal, wherein the second signal is offset from the first signal by ninety degrees. The method further includes outputting, by a first lower pass filter (LPF) coupled to an output of the first mixer, a real part of a reflection coefficient of the antenna and outputting, by a second lower pass filter (LPF) coupled to an output of the second mixer, an imaginary part of the reflection coefficient.</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING |
| title | Systems and methods for determining antenna impedance |
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