IEICE Electronics Express

An aim of ELEX is rapid publication of original, peer-reviewed short papers that treat the field of modern electronics and electrical engineering. The boundaries of acceptable fields are not strictly delimited and they are flexibly varied to reflect trends of the fields. The scope of ELEX has mainly been focused on device and circuit technologies. Current appropriate topics include: - Integrated optoelectronics (lasers and optoelectronic devices, silicon photonics, planar lightwave circuits, polymer optical circuits, etc.) - Optical hardware (fiber optics, microwave photonics, optical interconnects, photonic signal processing, photonic integration and modules, optical sensing, etc.) - Electromagnetic theory - Microwave and millimeter-wave devices, circuits, and modules - THz devices, circuits and modules - Electron devices, circuits and modules (silicon, compound semiconductor, organic and novel materials) - Integrated circuits (memory, logic, analog, RF, sensor) - Power devices and circuits - Micro- or nano-electromechanical systems - Circuits and modules for storage - Superconducting electronics - Energy harvesting devices, circuits and modules - Circuits and modules for electronic displays - Circuits and modules for electronic instrumentation - Devices, circuits and modules for IoT and biomedical applications

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Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Category	Year	Quartile
Condensed Matter Physics	2005	Q3
Condensed Matter Physics	2006	Q3
Condensed Matter Physics	2007	Q3
Condensed Matter Physics	2008	Q3
Condensed Matter Physics	2009	Q3
Condensed Matter Physics	2010	Q3
Condensed Matter Physics	2011	Q4
Condensed Matter Physics	2012	Q4
Condensed Matter Physics	2013	Q4
Condensed Matter Physics	2014	Q4
Condensed Matter Physics	2015	Q4
Condensed Matter Physics	2016	Q4
Condensed Matter Physics	2017	Q4
Condensed Matter Physics	2018	Q4
Condensed Matter Physics	2019	Q4
Condensed Matter Physics	2020	Q4
Condensed Matter Physics	2021	Q4
Condensed Matter Physics	2022	Q4
Condensed Matter Physics	2023	Q4
Electrical and Electronic Engineering	2005	Q2
Electrical and Electronic Engineering	2006	Q3
Electrical and Electronic Engineering	2007	Q2
Electrical and Electronic Engineering	2008	Q2
Electrical and Electronic Engineering	2009	Q2
Electrical and Electronic Engineering	2010	Q2
Electrical and Electronic Engineering	2011	Q3
Electrical and Electronic Engineering	2012	Q3
Electrical and Electronic Engineering	2013	Q3
Electrical and Electronic Engineering	2014	Q3
Electrical and Electronic Engineering	2015	Q3
Electrical and Electronic Engineering	2016	Q3
Electrical and Electronic Engineering	2017	Q4
Electrical and Electronic Engineering	2018	Q3
Electrical and Electronic Engineering	2019	Q3
Electrical and Electronic Engineering	2020	Q4
Electrical and Electronic Engineering	2021	Q3
Electrical and Electronic Engineering	2022	Q4
Electrical and Electronic Engineering	2023	Q3
Electronic, Optical and Magnetic Materials	2005	Q3
Electronic, Optical and Magnetic Materials	2006	Q3
Electronic, Optical and Magnetic Materials	2007	Q3
Electronic, Optical and Magnetic Materials	2008	Q3
Electronic, Optical and Magnetic Materials	2009	Q3
Electronic, Optical and Magnetic Materials	2010	Q3
Electronic, Optical and Magnetic Materials	2011	Q4
Electronic, Optical and Magnetic Materials	2012	Q4
Electronic, Optical and Magnetic Materials	2013	Q4
Electronic, Optical and Magnetic Materials	2014	Q4
Electronic, Optical and Magnetic Materials	2015	Q4
Electronic, Optical and Magnetic Materials	2016	Q3
Electronic, Optical and Magnetic Materials	2017	Q4
Electronic, Optical and Magnetic Materials	2018	Q4
Electronic, Optical and Magnetic Materials	2019	Q3
Electronic, Optical and Magnetic Materials	2020	Q4
Electronic, Optical and Magnetic Materials	2021	Q4
Electronic, Optical and Magnetic Materials	2022	Q4
Electronic, Optical and Magnetic Materials	2023	Q4

SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Year	SJR
2005	0.356
2006	0.239
2007	0.380
2008	0.298
2009	0.264
2010	0.266
2011	0.230
2012	0.227
2013	0.168
2014	0.198
2015	0.171
2016	0.246
2017	0.164
2018	0.195
2019	0.233
2020	0.178
2021	0.227
2022	0.212
2023	0.219

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Year	Documents
2004	103
2005	102
2006	103
2007	146
2008	191
2009	267
2010	285
2011	323
2012	278
2013	274
2014	322
2015	267
2016	268
2017	331
2018	313
2019	216
2020	143
2021	207
2022	190
2023	161

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per document	Year	Value
Cites / Doc. (4 years)	2004	0.000
Cites / Doc. (4 years)	2005	0.883
Cites / Doc. (4 years)	2006	0.566
Cites / Doc. (4 years)	2007	0.617
Cites / Doc. (4 years)	2008	0.626
Cites / Doc. (4 years)	2009	0.659
Cites / Doc. (4 years)	2010	0.719
Cites / Doc. (4 years)	2011	0.812
Cites / Doc. (4 years)	2012	0.636
Cites / Doc. (4 years)	2013	0.637
Cites / Doc. (4 years)	2014	0.506
Cites / Doc. (4 years)	2015	0.503
Cites / Doc. (4 years)	2016	0.539
Cites / Doc. (4 years)	2017	0.584
Cites / Doc. (4 years)	2018	0.636
Cites / Doc. (4 years)	2019	0.762
Cites / Doc. (4 years)	2020	0.613
Cites / Doc. (4 years)	2021	0.785
Cites / Doc. (4 years)	2022	0.751
Cites / Doc. (4 years)	2023	0.708
Cites / Doc. (3 years)	2004	0.000
Cites / Doc. (3 years)	2005	0.883
Cites / Doc. (3 years)	2006	0.566
Cites / Doc. (3 years)	2007	0.617
Cites / Doc. (3 years)	2008	0.630
Cites / Doc. (3 years)	2009	0.673
Cites / Doc. (3 years)	2010	0.735
Cites / Doc. (3 years)	2011	0.857
Cites / Doc. (3 years)	2012	0.647
Cites / Doc. (3 years)	2013	0.556
Cites / Doc. (3 years)	2014	0.535
Cites / Doc. (3 years)	2015	0.506
Cites / Doc. (3 years)	2016	0.552
Cites / Doc. (3 years)	2017	0.595
Cites / Doc. (3 years)	2018	0.673
Cites / Doc. (3 years)	2019	0.804
Cites / Doc. (3 years)	2020	0.635
Cites / Doc. (3 years)	2021	0.793
Cites / Doc. (3 years)	2022	0.823
Cites / Doc. (3 years)	2023	0.754
Cites / Doc. (2 years)	2004	0.000
Cites / Doc. (2 years)	2005	0.883
Cites / Doc. (2 years)	2006	0.566
Cites / Doc. (2 years)	2007	0.678
Cites / Doc. (2 years)	2008	0.631
Cites / Doc. (2 years)	2009	0.694
Cites / Doc. (2 years)	2010	0.749
Cites / Doc. (2 years)	2011	0.926
Cites / Doc. (2 years)	2012	0.490
Cites / Doc. (2 years)	2013	0.592
Cites / Doc. (2 years)	2014	0.487
Cites / Doc. (2 years)	2015	0.493
Cites / Doc. (2 years)	2016	0.567
Cites / Doc. (2 years)	2017	0.593
Cites / Doc. (2 years)	2018	0.661
Cites / Doc. (2 years)	2019	0.860
Cites / Doc. (2 years)	2020	0.643
Cites / Doc. (2 years)	2021	0.819
Cites / Doc. (2 years)	2022	0.894
Cites / Doc. (2 years)	2023	0.733

Total Cites

Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Cites	Year	Value
Self Cites	2004	0
Self Cites	2005	11
Self Cites	2006	9
Self Cites	2007	16
Self Cites	2008	20
Self Cites	2009	36
Self Cites	2010	45
Self Cites	2011	38
Self Cites	2012	39
Self Cites	2013	46
Self Cites	2014	64
Self Cites	2015	95
Self Cites	2016	88
Self Cites	2017	103
Self Cites	2018	124
Self Cites	2019	243
Self Cites	2020	137
Self Cites	2021	168
Self Cites	2022	129
Self Cites	2023	99
Total Cites	2004	0
Total Cites	2005	91
Total Cites	2006	116
Total Cites	2007	190
Total Cites	2008	221
Total Cites	2009	296
Total Cites	2010	444
Total Cites	2011	637
Total Cites	2012	566
Total Cites	2013	493
Total Cites	2014	468
Total Cites	2015	442
Total Cites	2016	476
Total Cites	2017	510
Total Cites	2018	583
Total Cites	2019	733
Total Cites	2020	546
Total Cites	2021	533
Total Cites	2022	466
Total Cites	2023	407

External Cites per Doc

Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

Cites	Year	Value
External Cites per document	2004	0
External Cites per document	2005	0.777
External Cites per document	2006	0.522
External Cites per document	2007	0.565
External Cites per document	2008	0.573
External Cites per document	2009	0.591
External Cites per document	2010	0.661
External Cites per document	2011	0.806
External Cites per document	2012	0.602
External Cites per document	2013	0.505
External Cites per document	2014	0.462
External Cites per document	2015	0.397
External Cites per document	2016	0.450
External Cites per document	2017	0.475
External Cites per document	2018	0.530
External Cites per document	2019	0.537
External Cites per document	2020	0.476
External Cites per document	2021	0.543
External Cites per document	2022	0.595
External Cites per document	2023	0.570
Cites per document	2004	0.000
Cites per document	2005	0.883
Cites per document	2006	0.566
Cites per document	2007	0.617
Cites per document	2008	0.630
Cites per document	2009	0.673
Cites per document	2010	0.735
Cites per document	2011	0.857
Cites per document	2012	0.647
Cites per document	2013	0.556
Cites per document	2014	0.535
Cites per document	2015	0.506
Cites per document	2016	0.552
Cites per document	2017	0.595
Cites per document	2018	0.673
Cites per document	2019	0.804
Cites per document	2020	0.635
Cites per document	2021	0.793
Cites per document	2022	0.823
Cites per document	2023	0.754

% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

Year	International Collaboration
2004	11.65
2005	15.69
2006	12.62
2007	4.79
2008	8.90
2009	6.37
2010	8.42
2011	10.53
2012	10.07
2013	8.03
2014	9.01
2015	11.24
2016	9.70
2017	10.88
2018	10.22
2019	9.72
2020	9.09
2021	9.66
2022	3.68
2023	5.59

Citable documents

Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Documents	Year	Value
Non-citable documents	2004	0
Non-citable documents	2005	0
Non-citable documents	2006	0
Non-citable documents	2007	12
Non-citable documents	2008	33
Non-citable documents	2009	48
Non-citable documents	2010	39
Non-citable documents	2011	21
Non-citable documents	2012	7
Non-citable documents	2013	8
Non-citable documents	2014	9
Non-citable documents	2015	8
Non-citable documents	2016	4
Non-citable documents	2017	0
Non-citable documents	2018	1
Non-citable documents	2019	4
Non-citable documents	2020	5
Non-citable documents	2021	4
Non-citable documents	2022	1
Non-citable documents	2023	0
Citable documents	2004	0
Citable documents	2005	103
Citable documents	2006	205
Citable documents	2007	296
Citable documents	2008	318
Citable documents	2009	392
Citable documents	2010	565
Citable documents	2011	722
Citable documents	2012	868
Citable documents	2013	878
Citable documents	2014	866
Citable documents	2015	866
Citable documents	2016	859
Citable documents	2017	857
Citable documents	2018	865
Citable documents	2019	908
Citable documents	2020	855
Citable documents	2021	668
Citable documents	2022	565
Citable documents	2023	540

Cited documents

Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Documents	Year	Value
Uncited documents	2004	0
Uncited documents	2005	60
Uncited documents	2006	139
Uncited documents	2007	215
Uncited documents	2008	243
Uncited documents	2009	292
Uncited documents	2010	391
Uncited documents	2011	479
Uncited documents	2012	598
Uncited documents	2013	610
Uncited documents	2014	619
Uncited documents	2015	613
Uncited documents	2016	580
Uncited documents	2017	570
Uncited documents	2018	512
Uncited documents	2019	499
Uncited documents	2020	509
Uncited documents	2021	357
Uncited documents	2022	285
Uncited documents	2023	310
Cited documents	2004	0
Cited documents	2005	43
Cited documents	2006	66
Cited documents	2007	93
Cited documents	2008	108
Cited documents	2009	148
Cited documents	2010	213
Cited documents	2011	264
Cited documents	2012	277
Cited documents	2013	276
Cited documents	2014	256
Cited documents	2015	261
Cited documents	2016	283
Cited documents	2017	287
Cited documents	2018	354
Cited documents	2019	413
Cited documents	2020	351
Cited documents	2021	315
Cited documents	2022	281
Cited documents	2023	230