Design, realization and test of a 2.1GHz ultra-low phase noise oscillator based on BAW resonator
This paper presents the design and the realization of a 2.1GHz low phase noise oscillator through a combination of BAW resonator and negative differential resistance (NDR) circuit using STMicroelectronics 0.25m BiCMOS Technology. A new procedure which is based on the Kurokawa criterion and implemented within microwave CADs has been used to design the oscillator. A good agreement between the simulations and measurements has been achieved. The best measured phase noise was ?130dBc/Hz at 100KHz offset from the carrier frequency of 2.1GHz. The measured device exhibits an output power close to ?4.5dBm, with an overall power consumption of 23.8mW.
low phase noise oscillator baw resonator negative differential resistance (ndr) kurokawa criterion