Low phase-noise VCO utilizing NMOS symmetric load for Frequency-based Delta-Sigma Modulators
The voltage-controlled oscillator (VCO) in frequency-based delta-sigma modulator (fdsm) systems behaves as a voltage-to-phase integrator converting an analog input voltage to phase information. In this paper, a low phase noise CMOS VCO utilizing modified NMOS symmetric load and PMOS tail transistor...
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| creator | Tuan Vu Cao Wisland, D.T. Lande, T.S. Moradi, F. |
| description | The voltage-controlled oscillator (VCO) in frequency-based delta-sigma modulator (fdsm) systems behaves as a voltage-to-phase integrator converting an analog input voltage to phase information. In this paper, a low phase noise CMOS VCO utilizing modified NMOS symmetric load and PMOS tail transistor for the differential delay cells is presented. By using modified NMOS symmetric loads and a PMOS tail for delay cells, the VCO phase noise can be reduced over 10 dB compared to that of conventional one. The circuits are designed using a 90 nm CMOS process. |
| doi_str_mv | 10.1109/ICECS.2009.5410768 |
| format | Conference Proceeding |
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The circuits are designed using a 90 nm CMOS process.</description><subject>Circuits</subject><subject>Delay</subject><subject>Delta modulation</subject><subject>Frequency conversion</subject><subject>Frequency modulation</subject><subject>MOS devices</subject><subject>Phase modulation</subject><subject>Phase noise</subject><subject>Tail</subject><subject>Voltage-controlled oscillators</subject><isbn>9781424450909</isbn><isbn>142445090X</isbn><isbn>9781424450916</isbn><isbn>1424450918</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2009</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNpVUMFOAjEUrDEkKvIDeukPLL7Xdtvt0aygJCAHiCcT0tIWa3ZZ3C4x-PVC5OJcJpPMTDJDyB3CEBH0w6QclYshA9DDXCAoWVyQgVYFCiZEDhrl5T8NukduTnYNimNxRQYpfcIRIueA7Jq8T5tvuvswyWfbJiZP38o53Xexij9xu6Gvs_mCpkNd-66Na1o1xtHQtHTc-q-9364PmT1GHX3yVWeyRdzUhs4at69M17TplvSCqZIfnLlPluPRsnzJpvPnSfk4zaKGLkPBvbcuOO7QrpUJwaFmsrABZCikZ8gY4ybnUgO3VgmLCpiUQeXWnIb0yf1fbfTer3ZtrE17WJ3_4b_JBla4</recordid><startdate>200912</startdate><enddate>200912</enddate><creator>Tuan Vu Cao</creator><creator>Wisland, D.T.</creator><creator>Lande, T.S.</creator><creator>Moradi, F.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>200912</creationdate><title>Low phase-noise VCO utilizing NMOS symmetric load for Frequency-based Delta-Sigma Modulators</title><author>Tuan Vu Cao ; Wisland, D.T. ; Lande, T.S. ; Moradi, F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i90t-143eebdfd3d1bc7affd19268bf06f86e212223a536903bb74b170266f75ba0453</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Circuits</topic><topic>Delay</topic><topic>Delta modulation</topic><topic>Frequency conversion</topic><topic>Frequency modulation</topic><topic>MOS devices</topic><topic>Phase modulation</topic><topic>Phase noise</topic><topic>Tail</topic><topic>Voltage-controlled oscillators</topic><toplevel>online_resources</toplevel><creatorcontrib>Tuan Vu Cao</creatorcontrib><creatorcontrib>Wisland, D.T.</creatorcontrib><creatorcontrib>Lande, T.S.</creatorcontrib><creatorcontrib>Moradi, F.</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>Tuan Vu Cao</au><au>Wisland, D.T.</au><au>Lande, T.S.</au><au>Moradi, F.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Low phase-noise VCO utilizing NMOS symmetric load for Frequency-based Delta-Sigma Modulators</atitle><btitle>2009 16th IEEE International Conference on Electronics, Circuits and Systems - (ICECS 2009)</btitle><stitle>ICECS</stitle><date>2009-12</date><risdate>2009</risdate><spage>767</spage><epage>770</epage><pages>767-770</pages><isbn>9781424450909</isbn><isbn>142445090X</isbn><eisbn>9781424450916</eisbn><eisbn>1424450918</eisbn><abstract>The voltage-controlled oscillator (VCO) in frequency-based delta-sigma modulator (fdsm) systems behaves as a voltage-to-phase integrator converting an analog input voltage to phase information. In this paper, a low phase noise CMOS VCO utilizing modified NMOS symmetric load and PMOS tail transistor for the differential delay cells is presented. By using modified NMOS symmetric loads and a PMOS tail for delay cells, the VCO phase noise can be reduced over 10 dB compared to that of conventional one. The circuits are designed using a 90 nm CMOS process.</abstract><pub>IEEE</pub><doi>10.1109/ICECS.2009.5410768</doi><tpages>4</tpages></addata></record> |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Circuits Delay Delta modulation Frequency conversion Frequency modulation MOS devices Phase modulation Phase noise Tail Voltage-controlled oscillators |
| title | Low phase-noise VCO utilizing NMOS symmetric load for Frequency-based Delta-Sigma Modulators |
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