A linear-assisted DC-DC hybrid power converter for envelope tracking RF power amplifiers

Bondade, Rajdeep; Zhang, Yi; Ma, Dongsheng

doi:10.1109/ecce.2014.6954193

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…The hybrid parallel architecture is one of the most popular variation of the ET modulator across multiple Kim, Choi et al, 2010;Jang et al, 2011;Li, Lopez, Schecht et al, 2012;Bondade, Zhang, Ma, 2014) papers as it provides different approaches to efficiency, linearity and noise improvements. A paper (Kim, Kang, Kim et al, 2011) demonstrates that the predistortion technique can be utilized to improve linearity of an advanced PA architecture.…”

Section: Envelope Tracking Architecturementioning

confidence: 99%

Mid-band 5G wireless network power amplifier research

Vasjanov¹

2019

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Vilnius 2019 Disertacija rengta 2015-2019 metais Vilniaus Gedimino technikos universitete. Vadovas doc. dr. Vaidotas BARZDĖNAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-T 001). Vilniaus Gedimino technikos universiteto Elektros ir elektronikos inžinerijos mokslo krypties disertacijos gynimo taryba: Pirmininkas prof. habil. dr. Romualdas NAVICKAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-T 001). Nariai: dr. Alvydas LISAUSKAS (Lenkijos mokslų akademijos Aukšto slėgio fizikos institutas, fizika-N 002), doc. dr. Vitalij NOVICKIJ (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-T 001), prof. dr. Šarūnas PAULIKAS (Vilniaus Gedimino technikos universitetas, elektros ir elektronikos inžinerija-T 001), prof. dr. Algimantas VALINEVIČIUS (Kauno technologijos universitetas, elektros ir elektronikos inžinerija-T 001). Disertacija bus ginama viešame Elektros ir elektronikos inžinerijos mokslo krypties disertacijos gynimo tarybos posėdyje 2019 m. birželio 13 d. 10 val. Vilniaus Gedimino technikos universiteto senato posėdžių salėje.

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Section: Envelope Tracking Architecturementioning

confidence: 99%

Mid-band 5G wireless network power amplifier research

Vasjanov¹

2019

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“…For example, when deliver a RF signal with 10 dB PAPR, the average efficiency of the class A amplifier is only 5%, powered by a constant voltage [1]. In order to improve the efficiency, envelope tracking (ET) technique has emerged [2], [3]. Fig.…”

Section: Introductionmentioning

confidence: 98%

High-Efficiency Switch-Linear-Hybrid Envelope-Tracking Power Supply With Step-Wave Approach

Jin

Ruan

Ren

et al. 2015

IEEE Trans. Ind. Electron.

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Featuring high bandwidth and high efficiency, the switch-linear hybrid envelope tracking (SLH-ET) power supply has been gaining considerable attentions. This paper proposes a new configuration for SLH-ET power supply, which consists of a switching-mode converter with step-wave approach and a linear amplifier connected in parallel. The switches in the switching-mode converter are operated only one time in every tracking period, leading to reduced switching loss and thus a higher efficiency. The number of the voltage levels and the voltage difference between the adjacent steps are analyzed in terms of the voltage synthesis accuracy and voltage total harmonics distortion (THD). A full feed-forward of the output voltage scheme is adopted to make the switching-mode converter provide the most load power and the linear amplifier only provide the ripple current resulted by the switching-mode converter. Thus, the overall efficiency is improved. A prototype is built aiming for 300 kHz sine-wave tracking, with 10 V  26 V output voltage and 50 W peak output power. The experimental results show that the proposed configuration can obtain higher efficiency as well as high tracking bandwidth.

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“…Other researches have proposed topologies to optimize the performance of buck converter or improve the control techniques [7,8,9]. Another have optimized the design using push-pull linear regulator [10].…”

Section: Introductionmentioning

confidence: 99%

Approach to the Modeling of LDO-Assisted DC-DC Voltage Linear Regulators

Sedaghati¹,

García²,

Vilella³

2017

REPQJ

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Abstract. This paper presents the design of a LDO-assisted DC-DC converters in Cadence Virtuoso based on a 350-nm CMOS technology. This kind of voltage regulators consists of a switching converter together with a classic or LDO (low dropout) linear voltage regulator. While the linear regulator provides the constant output voltage, the switching converter conducts nearly all the current provided in the output load, and keeping the regulator current close to zero where the higher efficiency is achieved. In addition, current article shows the modeling in Matlab/Simulink. This modeling is mandatory in order to predict and assure the stability of the circuit. In addition, it can allow improving the performance of the circuit.

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A linear-assisted DC-DC hybrid power converter for envelope tracking RF power amplifiers

Cited by 6 publications

References 4 publications

Mid-band 5G wireless network power amplifier research

Mid-band 5G wireless network power amplifier research

High-Efficiency Switch-Linear-Hybrid Envelope-Tracking Power Supply With Step-Wave Approach

Approach to the Modeling of LDO-Assisted DC-DC Voltage Linear Regulators

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