Microelectronic Magnetic Flux Sensor for Hearing Aid Application
A 3-D microelectronic inductor has been fabricated and characterized for use as a magnetic flux sensor, also known as a telecoil, for a hearing aid application. This telecoil was fabricated in a 0.5μm CMOS process with three metal layers. The 3-D structure is more space efficient than conventional s...
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| creator | Kenney, C.R. Kotecki, D.E. |
| description | A 3-D microelectronic inductor has been fabricated and characterized for use as a magnetic flux sensor, also known as a telecoil, for a hearing aid application. This telecoil was fabricated in a 0.5μm CMOS process with three metal layers. The 3-D structure is more space efficient than conventional spiral inductors and allows for an optimal number of turns for the space available. The telecoil has an inductance of 80μH, a resistance of 34Ω, and a capacitance of 275pF. When combined with an CMOS audio amplifier, the telecoil acts as a magnetic flux sensor by picking up the magnetic signal generated by telephone speaker which is then fed into the audio amplifier. The integrated telecoil is smaller in size and can be produced at a lower cost than commercially available telecoils. The electrical response of the telecoil to a changing magnetic field was found to be linear with respect to the input amplitude, and neglecting the noise associated at lower frequencies, independent of frequency. This response is in agreement with theory. |
| doi_str_mv | 10.1109/ICECS.2007.4510917 |
| format | Conference Proceeding |
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This telecoil was fabricated in a 0.5μm CMOS process with three metal layers. The 3-D structure is more space efficient than conventional spiral inductors and allows for an optimal number of turns for the space available. The telecoil has an inductance of 80μH, a resistance of 34Ω, and a capacitance of 275pF. When combined with an CMOS audio amplifier, the telecoil acts as a magnetic flux sensor by picking up the magnetic signal generated by telephone speaker which is then fed into the audio amplifier. The integrated telecoil is smaller in size and can be produced at a lower cost than commercially available telecoils. The electrical response of the telecoil to a changing magnetic field was found to be linear with respect to the input amplitude, and neglecting the noise associated at lower frequencies, independent of frequency. This response is in agreement with theory.</description><identifier>ISBN: 142441377X</identifier><identifier>ISBN: 9781424413775</identifier><identifier>EISBN: 1424413788</identifier><identifier>EISBN: 9781424413782</identifier><identifier>DOI: 10.1109/ICECS.2007.4510917</identifier><identifier>LCCN: 2007928620</identifier><language>eng</language><publisher>IEEE</publisher><subject>Auditory system ; CMOS process ; Frequency ; Inductance ; Inductors ; Magnetic flux ; Magnetic sensors ; Microelectronics ; Sensor phenomena and characterization ; Spirals</subject><ispartof>2007 14th IEEE International Conference on Electronics, Circuits and Systems, 2007, p.6-9</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4510917$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,780,784,789,790,2057,27924,54919</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/4510917$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Kenney, C.R.</creatorcontrib><creatorcontrib>Kotecki, D.E.</creatorcontrib><title>Microelectronic Magnetic Flux Sensor for Hearing Aid Application</title><title>2007 14th IEEE International Conference on Electronics, Circuits and Systems</title><addtitle>ICECS</addtitle><description>A 3-D microelectronic inductor has been fabricated and characterized for use as a magnetic flux sensor, also known as a telecoil, for a hearing aid application. This telecoil was fabricated in a 0.5μm CMOS process with three metal layers. The 3-D structure is more space efficient than conventional spiral inductors and allows for an optimal number of turns for the space available. The telecoil has an inductance of 80μH, a resistance of 34Ω, and a capacitance of 275pF. When combined with an CMOS audio amplifier, the telecoil acts as a magnetic flux sensor by picking up the magnetic signal generated by telephone speaker which is then fed into the audio amplifier. The integrated telecoil is smaller in size and can be produced at a lower cost than commercially available telecoils. The electrical response of the telecoil to a changing magnetic field was found to be linear with respect to the input amplitude, and neglecting the noise associated at lower frequencies, independent of frequency. This response is in agreement with theory.</description><subject>Auditory system</subject><subject>CMOS process</subject><subject>Frequency</subject><subject>Inductance</subject><subject>Inductors</subject><subject>Magnetic flux</subject><subject>Magnetic sensors</subject><subject>Microelectronics</subject><subject>Sensor phenomena and characterization</subject><subject>Spirals</subject><isbn>142441377X</isbn><isbn>9781424413775</isbn><isbn>1424413788</isbn><isbn>9781424413782</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2007</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNpFT8tqwzAQVCmBNo8faC_-AbtaPSz5VmPygoQekkJvQZHWQcWVjexC-_d1aaALw-wOwzBLyAPQDIAWT9tqWR0yRqnKhBwFUDdkCoIJAVxpfft_qLcJmf4aC6ZzRu_Iou_f6ThCCib1PXneextbbNAOsQ3eJntzCTiMy6r5_EoOGPo2JvWIDZrowyUpvUvKrmu8NYNvw5xMatP0uLjyjLyulsdqk-5e1tuq3KUelBxSq1GgEigpWGdza5E6bZyxzChwspZSaD425ueaFQbOjLocHAAqRMck8hl5_Mv1iHjqov8w8ft0fZ__ANhMTLE</recordid><startdate>200712</startdate><enddate>200712</enddate><creator>Kenney, C.R.</creator><creator>Kotecki, D.E.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>200712</creationdate><title>Microelectronic Magnetic Flux Sensor for Hearing Aid Application</title><author>Kenney, C.R. ; Kotecki, D.E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i175t-c8e4e74e501cdc6cce0d8adac2a71d5f554834133bf29a1b20d61d11e7eed25e3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Auditory system</topic><topic>CMOS process</topic><topic>Frequency</topic><topic>Inductance</topic><topic>Inductors</topic><topic>Magnetic flux</topic><topic>Magnetic sensors</topic><topic>Microelectronics</topic><topic>Sensor phenomena and characterization</topic><topic>Spirals</topic><toplevel>online_resources</toplevel><creatorcontrib>Kenney, C.R.</creatorcontrib><creatorcontrib>Kotecki, D.E.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Kenney, C.R.</au><au>Kotecki, D.E.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Microelectronic Magnetic Flux Sensor for Hearing Aid Application</atitle><btitle>2007 14th IEEE International Conference on Electronics, Circuits and Systems</btitle><stitle>ICECS</stitle><date>2007-12</date><risdate>2007</risdate><spage>6</spage><epage>9</epage><pages>6-9</pages><isbn>142441377X</isbn><isbn>9781424413775</isbn><eisbn>1424413788</eisbn><eisbn>9781424413782</eisbn><abstract>A 3-D microelectronic inductor has been fabricated and characterized for use as a magnetic flux sensor, also known as a telecoil, for a hearing aid application. This telecoil was fabricated in a 0.5μm CMOS process with three metal layers. The 3-D structure is more space efficient than conventional spiral inductors and allows for an optimal number of turns for the space available. The telecoil has an inductance of 80μH, a resistance of 34Ω, and a capacitance of 275pF. When combined with an CMOS audio amplifier, the telecoil acts as a magnetic flux sensor by picking up the magnetic signal generated by telephone speaker which is then fed into the audio amplifier. The integrated telecoil is smaller in size and can be produced at a lower cost than commercially available telecoils. The electrical response of the telecoil to a changing magnetic field was found to be linear with respect to the input amplitude, and neglecting the noise associated at lower frequencies, independent of frequency. This response is in agreement with theory.</abstract><pub>IEEE</pub><doi>10.1109/ICECS.2007.4510917</doi><tpages>4</tpages></addata></record> |
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| ispartof | 2007 14th IEEE International Conference on Electronics, Circuits and Systems, 2007, p.6-9 |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Auditory system CMOS process Frequency Inductance Inductors Magnetic flux Magnetic sensors Microelectronics Sensor phenomena and characterization Spirals |
| title | Microelectronic Magnetic Flux Sensor for Hearing Aid Application |
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