A wideband, low-noise, and high-resolution digitally-controlled oscillator for SDR applications
Journal
Asia-Pacific Microwave Conference Proceedings, APMC
Journal Volume
2018-November
Pages
270-272
Start Page
270
End Page
272
Date Issued
2018
Author(s)
Abstract
An integrated wide tuning range, low phase noise and high frequency resolution digitally controlled oscillator (DCO) in 90 nm CMOS technology for software-defined radio (SDR) frequency synthesizers is presented. The switched-capacitor equipped with fine frequency resolution and tail noise filtering techniques are adopted to achieve a wide frequency range from 8.14-11.90 GHz with power consumption varying from 9.4-24.5 mA under 1-V supply. The measured phase noise is -108.4 to -115.4 dBc/Hz at 1-MHz offset. Furthermore, a design technique what we term as Ceq-Ctune diagram and the methodology for designing wide tuning range and low phase noise oscillator in single core are also presented.
Event(s)
30th Asia-Pacific Microwave Conference, APMC 2018
Subjects
Digitally controlled oscillator
Frequency resolution
Low phase noise
Switched-capacitor array
Wide tuning range
SDGs
Publisher
Institute of Electrical and Electronics Engineers Inc.
Type
conference paper