A 65nm CMOS current controlled oscillator with high tuning linearity for wideband polar modulation
- Resource Type
- Conference
- Authors
- Tang, Yiwu; Hu, Jianyun; Park, Jongmin; Choi, Jaehyouk; Leung, Lincoln; Narathong, Chiewcharn; Sahota, Kamal
- Source
- Proceedings of the IEEE 2012 Custom Integrated Circuits Conference Custom Integrated Circuits Conference (CICC), 2012 IEEE. :1-4 Sep, 2012
- Subject
- Components, Circuits, Devices and Systems
Computing and Processing
Tuning
Voltage-controlled oscillators
Linearity
Inductors
Modulation
Multiaccess communication
- Language
- ISSN
- 0886-5930
2152-3630
A highly linear oscillator is presented for wideband polar modulation. It has both varactor voltage tuning for frequency locking and temperature compensation as well as inductive current tuning for linear phase modulation. Implemented in 65nm CMOS, it achieved a gain variation less than ±2% over more than 32MHz range meeting WCDMA polar modulation requirement. At 3.8GHz and 3MHz offset, its phase noise is −136.5dBc/Hz with current consumption of 18mA from 2.1V supply.