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UBC Theses and Dissertations
A dual-band 0.5V low-power quadrature LC-VCO using coupling current reuse technique Yu, Meiqi
Abstract
Quadrature voltage-controlled oscillators (QVCOs) are widely used in radio-frequency integrated circuit transceiver architectures. Different wireless communication systems call for different specifications, in particular, in terms of power consumption. For example, for the emerging Internet-of-Things (IoT) applications, all system blocks including the QVCO should operate from a low voltage supply and have a low power consumption. This is in part due to the size and energy resource limitations of the IoT nodes. This thesis presents the design and successful validation of an ultra-low-power QVCO which can operate in both 2.4 GHz and 5 GHz bands which are two of the popular unlicensed industrial, scientific, and medical (ISM) bands. A proof-of-concept prototype of the proposed structure has been designed and fabricated in a 65-nm CMOS process. When operating from 2.35 to 2.51 GHz (tuning voltage from 0 to 1 V), it consumes 0.58 mW from a 0.5-V supply, with a phase noise of -110.10 dBc/Hz at 1 MHz offset and a figure of merit (FOM) of -184.01 dBc/Hz. When operating from 4.81 to 5.26 GHz, again from a 0.5-V supply, the power consumption is 0.247 mW, with a phase noise of -105.10 dBc/Hz at 1-MHz offset and a FOM of -188.25 dBc/Hz. The measured performance of the prototype is compared favorably with that of the state-of-the-art designs.
Item Metadata
Title |
A dual-band 0.5V low-power quadrature LC-VCO using coupling current reuse technique
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2019
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Description |
Quadrature voltage-controlled oscillators (QVCOs) are widely used in radio-frequency integrated circuit transceiver architectures. Different wireless communication systems call for different specifications, in particular, in terms of power consumption. For example, for the emerging Internet-of-Things (IoT) applications, all system blocks including the QVCO should operate from a low voltage supply and have a low power consumption. This is in part due to the size and energy resource limitations of the IoT nodes. This thesis presents the design and successful validation of an ultra-low-power QVCO which can operate in both 2.4 GHz and 5 GHz bands which are two of the popular unlicensed industrial, scientific, and medical (ISM) bands. A proof-of-concept prototype of the proposed structure has been designed and fabricated in a 65-nm CMOS process. When operating from 2.35 to 2.51 GHz (tuning voltage from 0 to 1 V), it consumes 0.58 mW from a 0.5-V supply, with a phase noise of -110.10 dBc/Hz at 1 MHz offset and a figure of merit (FOM) of -184.01 dBc/Hz. When operating from 4.81 to 5.26 GHz, again from a 0.5-V supply, the power consumption is 0.247 mW, with a phase noise of -105.10 dBc/Hz at 1-MHz offset and a FOM of -188.25 dBc/Hz. The measured performance of the prototype is compared favorably with that of the state-of-the-art designs.
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Genre | |
Type | |
Language |
eng
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Date Available |
2019-12-10
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0387011
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2020-05
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Campus | |
Scholarly Level |
Graduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International