Design of a Low Phase Noise VCO Used for LTE Band40

DOI

10.2991/mmebc-16.2016.375How to use a DOI?

Keywords

VCO; LTE Band40; Low Phase Noise; Negative Resistance Analysis Method

Abstract

According to the frequency of LTE Band40 from 2300MHz to 2400MHz using for 4G mobile communication distributed by Ministry of Industry and Information Technology of China, a low phase noise, small size and low power consumption voltage-controlled oscillator (VCO) which can be used in mobile phones supporting 4G LTE mode is designed. The VCO based on a modified Clapp circuit topology is analyzed with the negative resistance analysis method and simulated in the time domain and frequency domain, respectively. Finally, the actual circuit is fabricated and tested. The test results show that the size of the VCO is 11mm by 9mm, the phase noises of the VCO are -53.79dBc/Hz@300Hz and -67.42dBc/Hz@1KHz, the voltage-controlled tuning sensitivity is about 24.4MHz/V which results in an operating frequency range from 2294MHz to 2416MHz up to 5V reverse bias voltage of the varactor and the output power is about 1dBm, meeting the application requirements of the 4G mobile communication well.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Qingyun Ju
AU  - Xinwei Li
AU  - Liang Tang
AU  - Donghai Qiao
PY  - 2016/06
DA  - 2016/06
TI  - Design of a Low Phase Noise VCO Used for LTE Band40
BT  - Proceedings of the 2016 6th International Conference on Machinery, Materials, Environment, Biotechnology and Computer
PB  - Atlantis Press
SP  - 1857
EP  - 1861
SN  - 2352-5401
UR  - https://doi.org/10.2991/mmebc-16.2016.375
DO  - 10.2991/mmebc-16.2016.375
ID  - Ju2016/06
ER  -