1. L. Oliveira, J. Fernandes, I. Filanovsky, C. Verhoeven, M. Silva, Analysis and Design of Quadrature Oscillators (Springer, Heidelberg, 2008)
2. B. Razavi, RF Microelectronics (Prentice-Hall, Upper Saddle River, 1998)
3. P.-I. Mak, S.-P. U, R. Martins, Transceiver architecture selection: review, state-of-the-art survey and case study. IEEE Circuits Syst. Mag. 7(2), 6–25 (2007)
4. L. Oliveira, J. Fernandes, I. Filanovsky, C.J.M. Verhoeven, Wideband two-integrator oscillator-mixer, in 6th International Conference On ASIC (ASICON), vol. 1 (2005), pp. 642–645
5. J. van der Tang, D. Kasperkovitz, A 0.9-2.2 GHz monolithic quadrature mixer oscillator for direct-conversion satellite receivers, in 43rd IEEE International Solid-State Circuits Conference (1997), pp. 88–89