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Precise 90º quadrature current-controlled oscillator tunable between 50-130 MHz

AuthorsLinares-Barranco, Bernabé ; Serrano-Gotarredona, Teresa ; Serrano-Gotarredona, Teresa ; Ramos-Martos, J. ; Ceballos-Cáceres, J. ; Mora-Gutiérrez, J. M. ; Linares-Barranco, Alejandro
Issue Date2003
PublisherInstitute of Electrical and Electronics Engineers
CitationElectronics Letters 39(11): 823-825 (2003)
AbstractA VLSI continuous time sinusoidal OTA-C quadrature oscillator fabricated in a standard double-poly 0.8 µm CMOS process is presented. The oscillator is tunable in the frequency range from 50–130 MHz. The two phases produced by the oscillator show an extremely low phase difference error (less than 2° over the whole frequency range). A novel current mode amplitude control scheme is developed that allows for very small amplitudes. Experimental results are provided.
Publisher version (URL)http://dx.doi.org/10.1049/el:20030558
Appears in Collections:(IMSE-CNM) Artículos
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