DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ko, S | ko |
dc.contributor.author | Hong, Songcheol | ko |
dc.date.accessioned | 2007-09-27T13:01:54Z | - |
dc.date.available | 2007-09-27T13:01:54Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2005-10 | - |
dc.identifier.citation | IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.15, no.10, pp.673 - 675 | - |
dc.identifier.issn | 1531-1309 | - |
dc.identifier.uri | http://hdl.handle.net/10203/1573 | - |
dc.description.abstract | A quadrature balanced voltage controlled oscillator (B-VCO) with current source switching is proposed and analyzed. This letter shows analytically that the switching improves the phase noise. A switched transistor is also used as a coupling transistor to generate quadrature signals without degrading the phase noise. To investigate the effect of quadrature coupling on the phase noise, a single B-VCO and a quadrature B-VCO are implemented with identical components in an 0.18-mu m CMOS process. Both VCO cores draw about 8.8 mA under a low bias voltage of 1.8 V. The oscillation frequencies are 10.21 GHz and 10.81 GHz. The measured phase noises of the single at an offset frequency of 1 MHz VCO is -114.83 dBc/Hz while that of the quadrature VCO is -116.67 dBc/Hz. The quadrature B-VCO is superior to the single B-VCO with respect to phase noise and oscillation frequency in the X-band. | - |
dc.description.sponsorship | The authors would like to thank the Staff of TELTRON for chip fabrication and support. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.subject | PHASE NOISE | - |
dc.title | Noise property of a quadrature balanced VCO | - |
dc.type | Article | - |
dc.identifier.wosid | 000232236000023 | - |
dc.identifier.scopusid | 2-s2.0-27144554594 | - |
dc.type.rims | ART | - |
dc.citation.volume | 15 | - |
dc.citation.issue | 10 | - |
dc.citation.beginningpage | 673 | - |
dc.citation.endingpage | 675 | - |
dc.citation.publicationname | IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | - |
dc.identifier.doi | 10.1109/LMWC.2005.856849 | - |
dc.contributor.localauthor | Hong, Songcheol | - |
dc.contributor.nonIdAuthor | Ko, S | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | balanced | - |
dc.subject.keywordAuthor | CMOS | - |
dc.subject.keywordAuthor | current switching | - |
dc.subject.keywordAuthor | noise | - |
dc.subject.keywordAuthor | quadrature | - |
dc.subject.keywordAuthor | transformer | - |
dc.subject.keywordAuthor | voltage controlled oscillator (WO) | - |
dc.subject.keywordPlus | PHASE NOISE | - |
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