Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator
A voltage-controlled oscillator (VCO) is a key component to generate high-speed clock of mixed-mode circuits and local oscillation signals of the frequency conversion in wired and wireless application systems. In particular, the recent evolution of new high-speed wireless systems in the millimeter-w...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-01-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/21/1/316 |
| _version_ | 1797542228321632256 |
|---|---|
| author | Cheol-Woo Kang Hyunwon Moon Jong-Ryul Yang |
| author_facet | Cheol-Woo Kang Hyunwon Moon Jong-Ryul Yang |
| author_sort | Cheol-Woo Kang |
| collection | DOAJ |
| description | A voltage-controlled oscillator (VCO) is a key component to generate high-speed clock of mixed-mode circuits and local oscillation signals of the frequency conversion in wired and wireless application systems. In particular, the recent evolution of new high-speed wireless systems in the millimeter-wave frequency band calls for the implementation of the VCO with high oscillation frequency and low close-in phase noise. The effect of the flicker noise on the phase noise of the VCO should be minimized because the flicker noise dramatically increases as the deep-submicron complementary metal-oxide-semiconductor (CMOS) process is scaled down, and the flicker corner frequency also increases, up to several MHz, in the up-to-date CMOS process. The flicker noise induced by the current source is a major factor affecting the phase noise of the VCO. Switched-biasing techniques have been proposed to minimize the effect of the flicker noise at the output of the VCO with biasing AC-coupled signals at the current source of the VCO. Reviewing the advantages and disadvantages reported in the previous studies, it is analyzed which topology to implement the switched-biasing technique is advantageous for improving the performance of the CMOS VCOs. |
| first_indexed | 2024-03-10T13:27:41Z |
| format | Article |
| id | doaj.art-06aaa3f7feea4c2c87ac6367ac3c454a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T13:27:41Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-06aaa3f7feea4c2c87ac6367ac3c454a2023-11-21T08:33:50ZengMDPI AGSensors1424-82202021-01-0121131610.3390/s21010316Switched-Biasing Techniques for CMOS Voltage-Controlled OscillatorCheol-Woo Kang0Hyunwon Moon1Jong-Ryul Yang2Department of Electronic Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, KoreaDepartment of Electronic Engineering, Daegu University, Gyeongsan, Gyeongbuk 38453, KoreaDepartment of Electronic Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, KoreaA voltage-controlled oscillator (VCO) is a key component to generate high-speed clock of mixed-mode circuits and local oscillation signals of the frequency conversion in wired and wireless application systems. In particular, the recent evolution of new high-speed wireless systems in the millimeter-wave frequency band calls for the implementation of the VCO with high oscillation frequency and low close-in phase noise. The effect of the flicker noise on the phase noise of the VCO should be minimized because the flicker noise dramatically increases as the deep-submicron complementary metal-oxide-semiconductor (CMOS) process is scaled down, and the flicker corner frequency also increases, up to several MHz, in the up-to-date CMOS process. The flicker noise induced by the current source is a major factor affecting the phase noise of the VCO. Switched-biasing techniques have been proposed to minimize the effect of the flicker noise at the output of the VCO with biasing AC-coupled signals at the current source of the VCO. Reviewing the advantages and disadvantages reported in the previous studies, it is analyzed which topology to implement the switched-biasing technique is advantageous for improving the performance of the CMOS VCOs.https://www.mdpi.com/1424-8220/21/1/316CMOSvoltage-controlled oscillatorswitched-biasingflicker noisephase noisecurrent source |
| spellingShingle | Cheol-Woo Kang Hyunwon Moon Jong-Ryul Yang Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator Sensors CMOS voltage-controlled oscillator switched-biasing flicker noise phase noise current source |
| title | Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator |
| title_full | Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator |
| title_fullStr | Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator |
| title_full_unstemmed | Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator |
| title_short | Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator |
| title_sort | switched biasing techniques for cmos voltage controlled oscillator |
| topic | CMOS voltage-controlled oscillator switched-biasing flicker noise phase noise current source |
| url | https://www.mdpi.com/1424-8220/21/1/316 |
| work_keys_str_mv | AT cheolwookang switchedbiasingtechniquesforcmosvoltagecontrolledoscillator AT hyunwonmoon switchedbiasingtechniquesforcmosvoltagecontrolledoscillator AT jongryulyang switchedbiasingtechniquesforcmosvoltagecontrolledoscillator |