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A 2-D Mode-Switching Quad-Core Oscillator Using E-M Mixed-Coupling Resonance Boosting.
- Source :
- IEEE Journal of Solid-State Circuits; Jun2021, Vol. 56 Issue 6, p1711-1721, 11p
- Publication Year :
- 2021
-
Abstract
- This article proposes a quad-core millimeter-wave (mm-wave) oscillator using E-M mixed-coupling resonance boosting. The mixed-coupling resonator is introduced to generate four reconfigurable resonances. The magnetic coupling and electric coupling are achieved by the symmetrically coupled transformer and coupling capacitor, respectively. A 2-D mode switch array is introduced to couple the quad-core and achieve the quad-mode switching without degrading the performance of the selected mode. Therefore, the reduction of phase noise and the extension of tuning range are achieved simultaneously. Meanwhile, the digitally controlled tail-resistor array is used to optimize the flicker noise up-conversion in wideband. Prototyped in 40-nm CMOS, the proposed oscillator exhibits a 73.2% tuning range from 18.6 to 40.1 GHz. The best phase noise at 1-MHz offset is −108.5 dBc/Hz, corresponding to an figure-of-merit (FoM) of 184.4 dBc/Hz and FoMT of 201.7 dBc/Hz. The variation range of FoM over the whole frequency range is 3 dB. The 1/ƒ<superscript>3</superscript> phase noise corner is 220–620 kHz. [ABSTRACT FROM AUTHOR]
- Subjects :
- RESONANCE
PINK noise
PHASE noise
NOISE control
RESONATORS
ROGUE waves
Subjects
Details
- Language :
- English
- ISSN :
- 00189200
- Volume :
- 56
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- IEEE Journal of Solid-State Circuits
- Publication Type :
- Academic Journal
- Accession number :
- 150557553
- Full Text :
- https://doi.org/10.1109/JSSC.2020.3028382