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A 2.4-GHz ZigBee Transmitter Using a Function-Reuse Class-F DCO-PA and an ADPLL Achieving 22.6% (14.5%) System Efficiency at 6-dBm (0-dBm) Pout
Xingqiang Peng; Jun Yin; Pui-In Mak; Wei-Han Yu; Rui P. Martins
2017-06-01
Source PublicationIEEE Journal of Solid-State Circuits
ISSN00189200
Volume52Issue:6Pages:1495-1508
Abstract

This paper describes a sub-1-V 2.4-GHz ZigBee transmitter (TX) with scalable output power (P) and system efficiency. It features a function-reuse class-F topology unifying the digital-controlled oscillator (DCO) and power amplifier (PA), designated as DCO-PA. Unlike the existing currentreuse topologies that rely on transistor stacking, here the power consumption of the DCO and PA-driver is absorbed into the DCO-PA without losing the voltage headroom, while allowing a low supply voltage. The DCO-PA also benefits from a six-port transformer with customized coupling coefficients and turn ratios to jointly perform the functions of resonant tank and output matching network, saving the chip area. A fractional-N all-digital phase-locked loop (ADPLL) realizes a two-point data modulation. Its phase-interpolated time-to-digital converter prevents time-consuming calibration. The entire TX fabricated in 65-nm CMOS occupies a 0.39-mm active area. The standalone DCO-PA shows a peak efficiency of 26.2% at a 6-dBm P, and a back-off efficiency of 17.7% at a -4.3 dBm P under a scalable supply voltage (0.3-0.7 V). The system efficiency, including the ADPLL, is 22.6% (14.5%) at 6-dBm (0-dBm) P. The HS-OQPSK modulated output complies with the ZigBee spectral mask with an adequate margin and the error vector magnitude is 2.29%.

KeywordBack-off Power Efficiency Class-f Cmos Digital-controlled Oscillator (Dco) Matching Network (Mn) Output Power Power Amplifier (Pa) Transformer Transmitter (Tx) Ultralow-power (Ulp) Zigbee
DOI10.1109/JSSC.2017.2672990
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000402179800003
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Citation statistics
Cited Times [WOS]:7   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF MICROELECTRONICS
Corresponding AuthorJun Yin; Pui-In Mak
AffiliationState-Key Laboratory of Analog and Mixed-Signal VLSI and FST-ECE, University of Macau, Macao, China
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Xingqiang Peng,Jun Yin,Pui-In Mak,et al. A 2.4-GHz ZigBee Transmitter Using a Function-Reuse Class-F DCO-PA and an ADPLL Achieving 22.6% (14.5%) System Efficiency at 6-dBm (0-dBm) Pout[J]. IEEE Journal of Solid-State Circuits,2017,52(6):1495-1508.
APA Xingqiang Peng,Jun Yin,Pui-In Mak,Wei-Han Yu,&Rui P. Martins.(2017).A 2.4-GHz ZigBee Transmitter Using a Function-Reuse Class-F DCO-PA and an ADPLL Achieving 22.6% (14.5%) System Efficiency at 6-dBm (0-dBm) Pout.IEEE Journal of Solid-State Circuits,52(6),1495-1508.
MLA Xingqiang Peng,et al."A 2.4-GHz ZigBee Transmitter Using a Function-Reuse Class-F DCO-PA and an ADPLL Achieving 22.6% (14.5%) System Efficiency at 6-dBm (0-dBm) Pout".IEEE Journal of Solid-State Circuits 52.6(2017):1495-1508.
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