%0 Journal Article %T Linearly tunable quadrature oscillator derived from LC Colpitts structure using voltage differencing transconductance amplifier and adjustable current amplifier %A Sotner, Roman %A Jerabek, Jan %A Herencsar, Norbert %A Petrzela, Jiri %A Vrba, Kamil %A Kincl, Zdenek %J Analog Integrated Circuits and Signal Processing %V 81 %N 1 %P 121-136 %@ 0925-1030 %D 2014-07-03 %I Springer US %~ DeepDyve