{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,9]],"date-time":"2025-11-09T07:44:13Z","timestamp":1762674253020,"version":"3.37.3"},"reference-count":28,"publisher":"World Scientific Pub Co Pte Ltd","issue":"04","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J CIRCUIT SYST COMP"],"published-print":{"date-parts":[[2019,4]]},"abstract":"<jats:p> This study proposes a new electronically tunable third-order quadrature oscillator using two multi-output voltage difference transconductance amplifiers (VDTAs) and three grounded capacitors. The proposed circuit provides three quadrature voltage outputs, two high-impedance quadrature current outputs, and one high-impedance current output with controllable amplitude. The proposed circuit can provide amplitude modulation\/amplitude shift keying signals when the input bias current of the second VDTA is a modulating signal. The oscillation condition and oscillation frequency can be separately adjusted by the input bias currents of two multi-output VDTAs, and it is suitable for use on custom sensor networks. Experimental and H-Spice simulation results are given to confirm theoretical analyses. <\/jats:p>","DOI":"10.1142\/s021812661950066x","type":"journal-article","created":{"date-parts":[[2018,6,4]],"date-time":"2018-06-04T01:52:27Z","timestamp":1528077147000},"page":"1950066","source":"Crossref","is-referenced-by-count":15,"title":["Electronically Tunable Third-Order Quadrature Oscillator Using VDTAs"],"prefix":"10.1142","volume":"28","author":[{"given":"Hua-Pin","family":"Chen","sequence":"first","affiliation":[{"name":"Department of Electronic Engineering, Ming Chi University of Technology, Taishan, New Taipei City, Taiwan, R.O.C"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2745-3125","authenticated-orcid":false,"given":"San-Fu","family":"wang","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, National Chin-Yi University of Technology, Taiping, Taichung, Taiwan, R.O.C."}]},{"given":"Yu-Nan","family":"Chen","sequence":"additional","affiliation":[{"name":"IBASE Technology Incorporation, Taipei, Taiwan, R.O.C"}]},{"given":"Qi-Geng","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, Ming Chi University of Technology, Taishan, New Taipei City, Taiwan, R.O.C"}]}],"member":"219","published-online":{"date-parts":[[2019,3,31]]},"reference":[{"key":"S021812661950066XBIB001","doi-asserted-by":"publisher","DOI":"10.1109\/19.231604"},{"key":"S021812661950066XBIB002","doi-asserted-by":"publisher","DOI":"10.1007\/s00034-008-9072-5"},{"key":"S021812661950066XBIB003","first-page":"708","volume":"52","author":"Prommee P.","year":"2014","journal-title":"Indian J. 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