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An agile supply modulator with improved transient performance for power efficient linear amplifier employing envelope tracking techniques
dc.contributor.author | Prakash, Suraj |
dc.contributor.author | Martínez García, Herminio |
dc.contributor.author | Naderi, Mohammad H. |
dc.contributor.author | Lee, Hoi |
dc.contributor.author | Silva Martinez, José |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica |
dc.date.accessioned | 2020-02-19T17:51:49Z |
dc.date.available | 2021-08-09T00:32:27Z |
dc.date.issued | 2019-08-09 |
dc.identifier.citation | Prakash, S. [et al.]. An agile supply modulator with improved transient performance for power efficient linear amplifier employing envelope tracking techniques. "IEEE transactions on power electronics", 9 Agost 2019, vol. 35, núm. 4, p. 4178-4191. |
dc.identifier.issn | 0885-8993 |
dc.identifier.uri | http://hdl.handle.net/2117/178133 |
dc.description.abstract | This article presents an agile supply modulator with optimal transient performance that includes improvement in rise time, overshoot and settling time for the envelope tracking supply in linear power amplifiers. For this purpose, we propose an on-demand current source module: the bang-bang transient performance enhancer (BBTPE). Its objective is to follow fast variations in input signals with reduced overshoot and settling time without deteriorating the steady-state performance of the buck regulator. The proposed approach enables fast system response through the BBTPE and an accurate steady-state output response through a low switching ripple and power efficient dynamic buck regulator. Fast output response with the help of the added module induces a slower rise of inductor current in the buck converter that further helps the proposed system to reduce both overshoot and settling time. This article also introduces an efficient selective tracking of envelope signal for linear PAs. To demonstrate the feasibility of the proposed solution, extensive simulations and experimental results from a discrete system are reported. The proposed supply modulator shows 80% improvement in rise time along with 60% reduction in both overshoot and settling time compared to the conventional dynamic buck regulator-based solution. Experimental results using the LTE 16-QAM 5 MHz standard shows improvement of 7.68 dB and 65.1% in adjacent channel power ratio (ACPR) and error vector magnitude (EVM), respectively. |
dc.format.extent | 14 p. |
dc.language.iso | eng |
dc.publisher | Institute of Electrical and Electronics Engineers (IEEE) |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria electrònica |
dc.subject.lcsh | Power electronics |
dc.subject.other | Bang–bang source |
dc.subject.other | Buck converter |
dc.subject.other | Buck regulator |
dc.subject.other | Dynamic regulator |
dc.subject.other | Envelope tracking (ET) |
dc.subject.other | Fast transient response |
dc.subject.other | Overshoot reduction |
dc.subject.other | Power amplifier (PA) |
dc.subject.other | Rise time enhancer |
dc.subject.other | Settling time improvement |
dc.subject.other | Supply modulator |
dc.subject.other | Switching converter |
dc.subject.other | Switching regulator. |
dc.title | An agile supply modulator with improved transient performance for power efficient linear amplifier employing envelope tracking techniques |
dc.type | Article |
dc.subject.lemac | Electrònica de potència |
dc.contributor.group | Universitat Politècnica de Catalunya. EPIC - Energy Processing and Integrated Circuits |
dc.identifier.doi | 10.1109/TPEL.2019.2934364 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://ieeexplore.ieee.org/abstract/document/8793182 |
dc.rights.access | Open Access |
local.identifier.drac | 26707202 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Prakash, S.; Martinez, H.; Naderi, Mohammad H.; Lee, H.; Silva-Martínez, J. |
local.citation.publicationName | IEEE transactions on power electronics |
local.citation.volume | 35 |
local.citation.number | 4 |
local.citation.startingPage | 4178 |
local.citation.endingPage | 4191 |
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