Low Phase Noise Series-coupled VCO using Current-reuse and Armstrong Topologies
- Authors
- Ryu, Hyuk; Ha, Keum-Won; Sung, Eun-Taek; Baek, Donghyun
- Issue Date
- Feb-2017
- Publisher
- IEEK PUBLICATION CENTER
- Keywords
- Voltage controlled oscillator; current-reuse; Armstrong; low phase noise; transformer; coupled
- Citation
- JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, v.17, no.1, pp 42 - 47
- Pages
- 6
- Journal Title
- JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE
- Volume
- 17
- Number
- 1
- Start Page
- 42
- End Page
- 47
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/4792
- DOI
- 10.5573/JSTS.2017.17.1.042
- ISSN
- 1598-1657
2233-4866
- Abstract
- This paper proposes a new series-coupled voltage-controlled oscillator (VCO). The proposed VCO consists of four current-reuse Armstrong VCOs (CRA-VCOs) coupled by four transformers. The series-coupling, current-reuse, and Armstrong topologies improve the phase noise performance by increasing the negative-Gm of the VCO core with half the current consumption of a conventional differential VCO. The proposed VCO consumes 6.54 mW at 9.78 GHz from a 1-V supply voltage. The measured phase noise is -115.1 dBc/Hz at an offset frequency of 1 MHz, and the FoM is -186.5 dBc/Hz. The frequency tuning range is from 9.38-10.52 GHz. The core area is 0.49 mm(2) in a 0.13-mu m CMOS process.
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Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
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