{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T08:08:51Z","timestamp":1770278931884,"version":"3.49.0"},"reference-count":15,"publisher":"World Scientific Pub Co Pte Lt","issue":"05","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J CIRCUIT SYST COMP"],"published-print":{"date-parts":[[2017,5]]},"abstract":"<jats:p> This study presents a two-stage ring voltage-controlled oscillator (VCO) for use in impulse-radio ultra-wideband (IR-UWB) applications. A systematic and efficient graphical optimization method was employed to find the optimal dimensions of the VCO which give a best performance. A good agreement was observed between the desired specifications and simulation results with regard to the optimum component size of the VCO circuit. The operation range of the VCO was extended to cover an ultra-wide tuning range of 176.6%. The phase noise was [Formula: see text]107.1[Formula: see text]dBc\/Hz at 10[Formula: see text]MHz offset frequency from a carrier frequency of 4[Formula: see text]GHz. The power consumption of VCO was 7.41[Formula: see text]mW from a 1.8[Formula: see text]V supply voltage. A large tuning range, low power, and appropriate phase noise were obtained with the optimum components size obtained through the optimization method. <\/jats:p>","DOI":"10.1142\/s0218126617500803","type":"journal-article","created":{"date-parts":[[2016,12,23]],"date-time":"2016-12-23T06:34:46Z","timestamp":1482474886000},"page":"1750080","source":"Crossref","is-referenced-by-count":8,"title":["Design and Optimization of Differential Ring Oscillator for IR-UWB Applications in 0.18\u2009\u03bcm CMOS Technology"],"prefix":"10.1142","volume":"26","author":[{"given":"Nadia","family":"Gargouri","sequence":"first","affiliation":[{"name":"Laboratory of Electronics and Technologies of Information (LETI), University of Sfax, ENIS, B. P. 1173-3038, Sfax, Tunisia"}]},{"given":"Dalenda Ben","family":"Issa","sequence":"additional","affiliation":[{"name":"Laboratory of Electronics and Technologies of Information (LETI), University of Sfax, ENIS, B. P. 1173-3038, Sfax, Tunisia"}]},{"given":"Zied","family":"Sakka","sequence":"additional","affiliation":[{"name":"Sciences of Electronics, Technologies of Information and Telecommunications Laboratory (SETIT Lab), University of Sfax, ISBS, B. P. 1175-3038, Sfax, Tunisia"}]},{"given":"Abdennaceur","family":"Kachouri","sequence":"additional","affiliation":[{"name":"Laboratory of Electronics and Technologies of Information (LETI), University of Sfax, ENIS, B. P. 1173-3038, Sfax, Tunisia"}]},{"given":"Mounir","family":"Samet","sequence":"additional","affiliation":[{"name":"Laboratory of Electronics and Technologies of Information (LETI), University of Sfax, ENIS, B. P. 1173-3038, Sfax, Tunisia"}]}],"member":"219","published-online":{"date-parts":[[2017,2,8]]},"reference":[{"key":"S0218126617500803BIB003","doi-asserted-by":"publisher","DOI":"10.1109\/TMTT.2009.2017246"},{"key":"S0218126617500803BIB007","first-page":"1","volume":"4","author":"Manekar P. A.","year":"2013","journal-title":"J. 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