{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,27]],"date-time":"2025-10-27T16:13:47Z","timestamp":1761581627500,"version":"3.37.3"},"reference-count":22,"publisher":"World Scientific Pub Co Pte Ltd","issue":"08","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J CIRCUIT SYST COMP"],"published-print":{"date-parts":[[2018,7]]},"abstract":"<jats:p> This work presents a fully integrated fractional-[Formula: see text] frequency synthesizer that covers the entire frequency bands specified in the IEEE 802.11 a\/b\/g\/n. In this paper, the effects of charge pump (CP) gain mismatch on spectral purity of local oscillator signal is studied theoretically and a new high precision self-calibrated CP is presented for alleviating the nonidealities. The idea is implemented in a 0.18-[Formula: see text]m standard CMOS technology. According to post layout simulation, the proposed calibration circuit demonstrates an excellent matching in the CP currents in a wide voltage range. By using this technique, the average of close-in phase noise of the designed frequency synthesizer is suppressed by more than 12[Formula: see text]dBc. The active whole chip die area is 0.475[Formula: see text]mm<jats:sup>2<\/jats:sup> and the power dissipation from a 1.8-V DC supply is 17.3\u201320.6[Formula: see text]mW. <\/jats:p>","DOI":"10.1142\/s0218126618501311","type":"journal-article","created":{"date-parts":[[2017,11,29]],"date-time":"2017-11-29T03:55:00Z","timestamp":1511927700000},"page":"1850131","source":"Crossref","is-referenced-by-count":6,"title":["A Dual Band Fractional-N Frequency Synthesizer with a Self-Calibrated Charge Pump for WLAN Standards"],"prefix":"10.1142","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9009-3495","authenticated-orcid":false,"given":"Mostafa","family":"Azadbakht","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering, Sahand University of Technology Tabriz, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ali","family":"Sahafi","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, University of Tabriz Tabriz, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Esmaeil Najafi","family":"Aghdam","sequence":"additional","affiliation":[{"name":"Department of Electrical Engineering, Sahand University of Technology Tabriz, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2018,4,12]]},"reference":[{"key":"S0218126618501311BIB001","doi-asserted-by":"publisher","DOI":"10.1109\/22.981280"},{"key":"S0218126618501311BIB003","doi-asserted-by":"publisher","DOI":"10.1007\/s00542-014-2126-7"},{"key":"S0218126618501311BIB006","doi-asserted-by":"publisher","DOI":"10.1007\/s11277-015-2514-z"},{"key":"S0218126618501311BIB007","doi-asserted-by":"publisher","DOI":"10.1007\/s00542-015-2714-1"},{"key":"S0218126618501311BIB009","doi-asserted-by":"publisher","DOI":"10.1109\/JSSC.2004.842851"},{"key":"S0218126618501311BIB010","doi-asserted-by":"publisher","DOI":"10.1109\/TCSII.2003.819132"},{"key":"S0218126618501311BIB011","doi-asserted-by":"publisher","DOI":"10.1109\/9780470545492"},{"key":"S0218126618501311BIB012","doi-asserted-by":"publisher","DOI":"10.1016\/j.mejo.2013.05.005"},{"key":"S0218126618501311BIB013","doi-asserted-by":"publisher","DOI":"10.1016\/j.mejo.2015.03.004"},{"issue":"7","key":"S0218126618501311BIB014","first-page":"622","volume":"37","author":"Mauer B.","year":"2002","journal-title":"IEEE J. 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