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This paper presents a 23GHz low-phase-noise transformer-feedback differential VCO with a 27% frequency tuning range. By adding a source-bridging capacitor between the sources of the transistors that are connected to the two feedback transformers, the phase noise at 1/f 3 region is improved due to the suppression of flicker noise up-conversion. The proposed VCO is implemented in a 22nm FD-SOI technology with a low supply voltage of 0.65V. The measured phase noise is -106 dBc/Hz at 1MHz frequency offset with power consumption of 11.5mW, and the corresponding FOM and FOMT are 182.6 dBc/Hz and 191 dBc/Hz, respectively.
|Title of host publication||2018 IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference (S3S)|
|Place of Publication||Burlingame|
|Number of pages||2|
|Publication status||Published - 2018|
|Event||2018 IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference, S3S 2018 - Burlingame, United States|
Duration: 15 Oct 2018 → 18 Oct 2018
|Conference||2018 IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference, S3S 2018|
|Period||15/10/18 → 18/10/18|
- phase noise
- voltage-controlled oscillator (VCO)
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