A linear integrated LC bandpass filter with Q-enhancement
A technique is proposed in this paper for linearizing active Q-enhanced monolithic LC filters. This technique employs capacitive dividers and tunable linear transconductors. Various multi-tanh translinear circuits can be used to implement the linear transconductors, taking into consideration the nee...
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| Veröffentlicht in: | IEEE transactions on circuits and systems. 2, Analog and digital signal processing Analog and digital signal processing, 1998-05, Vol.45 (5), p.635-639 |
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| container_end_page | 639 |
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| container_issue | 5 |
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| container_title | IEEE transactions on circuits and systems. 2, Analog and digital signal processing |
| container_volume | 45 |
| creator | Gao, W. Snelgrove, W.M. |
| description | A technique is proposed in this paper for linearizing active Q-enhanced monolithic LC filters. This technique employs capacitive dividers and tunable linear transconductors. Various multi-tanh translinear circuits can be used to implement the linear transconductors, taking into consideration the need for linear operating range and the low supply voltage. A linear Q-enhanced LC filter using the proposed technique has been implemented in a 0.5 /spl mu/m bipolar process. The demonstrated filter chip operates at a center frequency around 1 GHz with the quality factor tunable up to 400 without spurious oscillation. For a Q of 40, the input intercept point and spurious-free dynamic range are -6.67 dBm and 36 dB, respectively, at a power consumption of 68 mW and with 7 dB of gain. |
| doi_str_mv | 10.1109/82.673647 |
| format | Article |
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This technique employs capacitive dividers and tunable linear transconductors. Various multi-tanh translinear circuits can be used to implement the linear transconductors, taking into consideration the need for linear operating range and the low supply voltage. A linear Q-enhanced LC filter using the proposed technique has been implemented in a 0.5 /spl mu/m bipolar process. The demonstrated filter chip operates at a center frequency around 1 GHz with the quality factor tunable up to 400 without spurious oscillation. 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This technique employs capacitive dividers and tunable linear transconductors. Various multi-tanh translinear circuits can be used to implement the linear transconductors, taking into consideration the need for linear operating range and the low supply voltage. A linear Q-enhanced LC filter using the proposed technique has been implemented in a 0.5 /spl mu/m bipolar process. The demonstrated filter chip operates at a center frequency around 1 GHz with the quality factor tunable up to 400 without spurious oscillation. For a Q of 40, the input intercept point and spurious-free dynamic range are -6.67 dBm and 36 dB, respectively, at a power consumption of 68 mW and with 7 dB of gain.</description><subject>Band pass filters</subject><subject>Dynamic range</subject><subject>Energy consumption</subject><subject>Frequency</subject><subject>Gain</subject><subject>Low voltage</subject><subject>Nonlinear filters</subject><subject>Q factor</subject><subject>Transconductors</subject><subject>Tunable circuits and devices</subject><issn>1057-7130</issn><issn>1558-125X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo90M1LAzEQBfAgCtbqwaunnAQPW5PsJpMcS_ELCiIoeAvZ7MRGttuapIj_vZUtnt7A-zGHR8glZzPOmbnVYqagVg0ckQmXUldcyPfj_c0kVMBrdkrOcv5kjGlu9ISYOe3jgC7ROBT8SK5gR5cL2rqh27qcaYh9wUS_Y1nRlwqHlRs8rnEo5-QkuD7jxSGn5O3-7nXxWC2fH54W82XlBUCpvArKNdpzqKVspUajGATjkTlohamhDr51svHoA2vajneKS-OhdcC7Bnw9Jdfj323afO0wF7uO2WPfuwE3u2wFSC1A8T28GaFPm5wTBrtNce3Sj-XM_o1jtbDjOHt7NdqIiP_uUP4Cojdeew</recordid><startdate>19980501</startdate><enddate>19980501</enddate><creator>Gao, W.</creator><creator>Snelgrove, W.M.</creator><general>IEEE</general><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SC</scope><scope>8FD</scope><scope>JQ2</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope></search><sort><creationdate>19980501</creationdate><title>A linear integrated LC bandpass filter with Q-enhancement</title><author>Gao, W. ; Snelgrove, W.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c277t-c6f6a48c17355b58e9607f9ce0a7b29373fcba54cecf04bd1d6159c7ba71d47c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Band pass filters</topic><topic>Dynamic range</topic><topic>Energy consumption</topic><topic>Frequency</topic><topic>Gain</topic><topic>Low voltage</topic><topic>Nonlinear filters</topic><topic>Q factor</topic><topic>Transconductors</topic><topic>Tunable circuits and devices</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gao, W.</creatorcontrib><creatorcontrib>Snelgrove, W.M.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Computer and Information Systems Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><jtitle>IEEE transactions on circuits and systems. 2, Analog and digital signal processing</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Gao, W.</au><au>Snelgrove, W.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A linear integrated LC bandpass filter with Q-enhancement</atitle><jtitle>IEEE transactions on circuits and systems. 2, Analog and digital signal processing</jtitle><stitle>T-CAS2</stitle><date>1998-05-01</date><risdate>1998</risdate><volume>45</volume><issue>5</issue><spage>635</spage><epage>639</epage><pages>635-639</pages><issn>1057-7130</issn><eissn>1558-125X</eissn><coden>ICSPE5</coden><abstract>A technique is proposed in this paper for linearizing active Q-enhanced monolithic LC filters. This technique employs capacitive dividers and tunable linear transconductors. Various multi-tanh translinear circuits can be used to implement the linear transconductors, taking into consideration the need for linear operating range and the low supply voltage. A linear Q-enhanced LC filter using the proposed technique has been implemented in a 0.5 /spl mu/m bipolar process. The demonstrated filter chip operates at a center frequency around 1 GHz with the quality factor tunable up to 400 without spurious oscillation. For a Q of 40, the input intercept point and spurious-free dynamic range are -6.67 dBm and 36 dB, respectively, at a power consumption of 68 mW and with 7 dB of gain.</abstract><pub>IEEE</pub><doi>10.1109/82.673647</doi><tpages>5</tpages></addata></record> |
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| identifier | ISSN: 1057-7130 |
| ispartof | IEEE transactions on circuits and systems. 2, Analog and digital signal processing, 1998-05, Vol.45 (5), p.635-639 |
| issn | 1057-7130 1558-125X |
| language | eng |
| recordid | cdi_proquest_miscellaneous_27582761 |
| source | IEEE Electronic Library (IEL) |
| subjects | Band pass filters Dynamic range Energy consumption Frequency Gain Low voltage Nonlinear filters Q factor Transconductors Tunable circuits and devices |
| title | A linear integrated LC bandpass filter with Q-enhancement |
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