Abstract
A linearity enhancement technique for a wide-band digitally controlled oscillator (DCO) is presented in this paper. By adding a calibration resistor array to improve frequency-tuning characteristics, the DCO shows a highly linearized frequency tuning curve without demanding much more power and silicon area. A prototype is designed and fabricated using a 55-nm CMOS process. The test chip has a measured frequency tuning range from 1.3 GHz to 2.5 GHz while occupying 225 × 180 µm2. The measured coarse bank tuning maximum DNL is 0.39 LSB and the maximum INL is 4.64 LSB which has been reduced to 43% of the conventional design's. The maximum power consumption is 15.8 mW from a 1.2 V supply voltage.
| Original language | English |
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| Title of host publication | 2020 15th European Microwave Integrated Circuits Conference (EuMIC) |
| Publisher | Institute of Electrical and Electronics Engineers |
| Pages | 105-108 |
| Number of pages | 4 |
| ISBN (Electronic) | 9782874870606 |
| Publication status | Published - 3 Feb 2021 |
| Event | 15th European Microwave Integrated Circuits Conference (EuMIC 2020) - Utrecht, Netherlands Duration: 11 Jan 2021 → 15 Jan 2021 Conference number: 15 |
Conference
| Conference | 15th European Microwave Integrated Circuits Conference (EuMIC 2020) |
|---|---|
| Abbreviated title | EuMIC 2020 |
| Country/Territory | Netherlands |
| City | Utrecht |
| Period | 11/01/21 → 15/01/21 |
Keywords
- CMOS
- digitally controlled oscillator
- Integrated Circuit
- linearity enhancement
- switched-capacitor feedback