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This paper deals with the design problems associated to the implementation of low power wide tuning band low phase noise LC VCOs in low cost Si-integrated technologies. For that, a VCO was developed using a low cost 0.35 mum 2-poly 4-metal standard CMOS technology. The VCO uses a radio frequency switched varactor array (RFSVA) in the tank circuit in order to decrease the influence of the varactor...
A digitally-controlled oscillator (DCO) for mm-wave wireless applications is demonstrated for the first time. Low phase noise is achieved adopting an efficient complementary topology and optimizing the programmable-capacitor array. A fine frequency resolution of 1.8 MHz is obtained using switched metal-oxide-metal capacitors while coarse frequency tuning is achieved using switched accumulation-mode...
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