1. Hajimiri, A., Lee, T.H.: Design issues in CMOS differential LC oscillators. IEEE J. Solid-State Circ. 34(5), (1999)
2. Hyvertl, J., Cordeaul, D., Paillotl, J.-M., Philippe, P., Fahs, B.: A new class-C very low phase-noise Ku-band VCO in 250 nm SiGe: C BiCMOS technology. (2015) 978-1-4799-8275-2/15/$31.00 ©2015 IEEE
3. Banu, M.: MOS oscillators with multi-decade tuning range and gigahertz maximum speed. IEEE J. Solid-State Circuits 23, 1386–1393 (1988)
4. Shrivastava, A., Saxena, A., Akashe, S.: High performance of low voltage-controlled ring oscillator with reverse body bias technology. Front. Optoelectron. 6(3), 338–345 (2013)
5. Tao, R., Berroth, M.: 5 GHz voltage-controlled ring oscillator using source capacitively coupled current amplifier. In: Proceedings of IEEE Topic Meeting on Silicon Monolithic Integrated Circuits in RF System, pp. 45–48 (2003)