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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Electronics and Electrical Engineering 36 5353 5139 87 85 259 5307

Ashraf Uz Zaman publications per year

The chart shows the history of publications by Ashraf Uz Zaman between 2000 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ashraf Uz Zaman published across 26 years, from 2000 to 2025, averaging 10.2 papers a year. Output peaked at 30 publications in 2019. 25 of the 265 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 2000 to 2025. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2019. 2000: 1 publication 2001: 0 publications 2002: 0 publications 2003: 0 publications 2004: 0 publications 2005: 0 publications 2006: 0 publications 2007: 1 publication 2008: 1 publication 2009: 4 publications 2010: 10 publications 2011: 10 publications 2012: 11 publications 2013: 11 publications 2014: 6 publications 2015: 5 publications 2016: 16 publications 2017: 20 publications 2018: 27 publications 2019: 30 publications 2020: 23 publications 2021: 22 publications 2022: 24 publications 2023: 18 publications 2024: 18 publications 2025: 7 publications
2000 2025

265 publications in total across all disciplines

View publications per year as a table
Ashraf Uz Zaman: publications per year, 2000 to 2025
Year Publications
2000 1
2001 0
2002 0
2003 0
2004 0
2005 0
2006 0
2007 1
2008 1
2009 4
2010 10
2011 10
2012 11
2013 11
2014 6
2015 5
2016 16
2017 20
2018 27
2019 30
2020 23
2021 22
2022 24
2023 18
2024 18
2025 7
Total 265
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Ashraf Uz Zaman publication distribution in Electronics and Electrical Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Electronics and Electrical Engineering in 2026. The highlighted bar marks where Ashraf Uz Zaman sits on this spectrum.

No. of scientists
100 200 300 400
Bar chart with 53 bars. Horizontal axis: publications, 34–53 to 1,065+. Vertical axis: number of scientists, 0 to 445. Most scientists, 445, have 174–193 publications. The last bar groups every scientist with 1,065 publications or more. The highlighted bar, 254–273 publications, is where this scientist sits. 34–53 publications: 24 scientists 54–73 publications: 52 scientists 74–93 publications: 114 scientists 94–113 publications: 203 scientists 114–133 publications: 269 scientists 134–153 publications: 355 scientists 154–173 publications: 403 scientists 174–193 publications: 445 scientists 194–213 publications: 430 scientists 214–233 publications: 431 scientists 234–253 publications: 399 scientists 254–273 publications: 366 scientists 274–293 publications: 335 scientists 294–313 publications: 300 scientists 314–333 publications: 276 scientists 334–353 publications: 250 scientists 354–373 publications: 214 scientists 374–393 publications: 187 scientists 394–413 publications: 152 scientists 414–433 publications: 169 scientists 434–453 publications: 147 scientists 454–473 publications: 111 scientists 474–493 publications: 117 scientists 494–513 publications: 103 scientists 514–533 publications: 99 scientists 534–553 publications: 92 scientists 554–573 publications: 75 scientists 574–593 publications: 58 scientists 594–613 publications: 69 scientists 614–633 publications: 50 scientists 634–653 publications: 62 scientists 654–673 publications: 54 scientists 674–693 publications: 44 scientists 694–713 publications: 37 scientists 714–733 publications: 28 scientists 734–753 publications: 26 scientists 754–773 publications: 26 scientists 774–793 publications: 19 scientists 794–813 publications: 23 scientists 814–833 publications: 20 scientists 834–853 publications: 16 scientists 854–873 publications: 20 scientists 874–893 publications: 11 scientists 894–913 publications: 11 scientists 914–933 publications: 16 scientists 934–953 publications: 13 scientists 954–973 publications: 10 scientists 974–993 publications: 11 scientists 994–1,013 publications: 9 scientists 1,014–1,033 publications: 9 scientists 1,034–1,053 publications: 10 scientists 1,054–1,064 publications: 6 scientists 1,065+ publications: 99 scientists
34–53 publications 1,065+

This scientist: 259 publications — 47th percentile

47% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,065 publications or more.

View publications distribution as a table
Number of Electronics and Electrical Engineering scientists by publication count, Research.com 2026 ranking edition. Based on 6,875 ranked scientists.
Publications Scientists This scientist
34–53 24
54–73 52
74–93 114
94–113 203
114–133 269
134–153 355
154–173 403
174–193 445
194–213 430
214–233 431
234–253 399
254–273 366 259
274–293 335
294–313 300
314–333 276
334–353 250
354–373 214
374–393 187
394–413 152
414–433 169
434–453 147
454–473 111
474–493 117
494–513 103
514–533 99
534–553 92
554–573 75
574–593 58
594–613 69
614–633 50
634–653 62
654–673 54
674–693 44
694–713 37
714–733 28
734–753 26
754–773 26
774–793 19
794–813 23
814–833 20
834–853 16
854–873 20
874–893 11
894–913 11
914–933 16
934–953 13
954–973 10
974–993 11
994–1,013 9
1,014–1,033 9
1,034–1,053 10
1,054–1,064 6
1,065+ 99
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Ashraf Uz Zaman D-index placement in Electronics and Electrical Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Electronics and Electrical Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Ashraf Uz Zaman sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 82 bars. Horizontal axis: D-Index, 30 to 111+. Vertical axis: number of scientists, 0 to 263. Most scientists, 263, have 32 D-Index. The last bar groups every scientist with 111 D-Index or more. The highlighted bar, 36 D-Index, is where this scientist sits. 30 D-Index: 178 scientists 31 D-Index: 257 scientists 32 D-Index: 263 scientists 33 D-Index: 262 scientists 34 D-Index: 244 scientists 35 D-Index: 236 scientists 36 D-Index: 211 scientists 37 D-Index: 220 scientists 38 D-Index: 214 scientists 39 D-Index: 214 scientists 40 D-Index: 205 scientists 41 D-Index: 187 scientists 42 D-Index: 194 scientists 43 D-Index: 201 scientists 44 D-Index: 155 scientists 45 D-Index: 189 scientists 46 D-Index: 148 scientists 47 D-Index: 160 scientists 48 D-Index: 134 scientists 49 D-Index: 130 scientists 50 D-Index: 141 scientists 51 D-Index: 156 scientists 52 D-Index: 108 scientists 53 D-Index: 130 scientists 54 D-Index: 112 scientists 55 D-Index: 97 scientists 56 D-Index: 111 scientists 57 D-Index: 102 scientists 58 D-Index: 108 scientists 59 D-Index: 120 scientists 60 D-Index: 103 scientists 61 D-Index: 93 scientists 62 D-Index: 92 scientists 63 D-Index: 74 scientists 64 D-Index: 77 scientists 65 D-Index: 73 scientists 66 D-Index: 64 scientists 67 D-Index: 69 scientists 68 D-Index: 60 scientists 69 D-Index: 39 scientists 70 D-Index: 57 scientists 71 D-Index: 59 scientists 72 D-Index: 46 scientists 73 D-Index: 49 scientists 74 D-Index: 38 scientists 75 D-Index: 35 scientists 76 D-Index: 32 scientists 77 D-Index: 35 scientists 78 D-Index: 31 scientists 79 D-Index: 22 scientists 80 D-Index: 34 scientists 81 D-Index: 31 scientists 82 D-Index: 34 scientists 83 D-Index: 23 scientists 84 D-Index: 18 scientists 85 D-Index: 30 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 20 scientists 89 D-Index: 8 scientists 90 D-Index: 17 scientists 91 D-Index: 7 scientists 92 D-Index: 14 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 12 scientists 97 D-Index: 10 scientists 98 D-Index: 10 scientists 99 D-Index: 12 scientists 100 D-Index: 16 scientists 101 D-Index: 5 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 8 scientists 105 D-Index: 9 scientists 106 D-Index: 13 scientists 107 D-Index: 4 scientists 108 D-Index: 5 scientists 109 D-Index: 10 scientists 110 D-Index: 8 scientists 111+ D-Index: 96 scientists
30 D-Index 111+

This scientist: 36 D-Index — 24th percentile

24% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 111 D-Index or more.

View D-Index distribution as a table
Number of Electronics and Electrical Engineering scientists by D-index, Research.com 2026 ranking edition. Based on 6,875 ranked scientists.
D-Index Scientists This scientist
30 178
31 257
32 263
33 262
34 244
35 236
36 211 36
37 220
38 214
39 214
40 205
41 187
42 194
43 201
44 155
45 189
46 148
47 160
48 134
49 130
50 141
51 156
52 108
53 130
54 112
55 97
56 111
57 102
58 108
59 120
60 103
61 93
62 92
63 74
64 77
65 73
66 64
67 69
68 60
69 39
70 57
71 59
72 46
73 49
74 38
75 35
76 32
77 35
78 31
79 22
80 34
81 31
82 34
83 23
84 18
85 30
86 19
87 19
88 20
89 8
90 17
91 7
92 14
93 9
94 15
95 10
96 12
97 10
98 10
99 12
100 16
101 5
102 7
103 7
104 8
105 9
106 13
107 4
108 5
109 10
110 8
111+ 96
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Overview

Ashraf Uz Zaman is affiliated with Chalmers University of Technology in Sweden and specializes in the field of engineering, with a focus on electrical and electronic engineering as well as aerospace engineering. Their research spans several advanced topics related to microwave technology and antenna systems.

The main fields of study covered by their work include:

  • Engineering

More specifically, their subfields of study involve:

  • Electrical and Electronic Engineering
  • Aerospace Engineering
  • Atomic and Molecular Physics, and Optics
  • Astronomy and Astrophysics
  • Biomedical Engineering

Ashraf's research topics include:

  • Microwave Engineering and Waveguides
  • Antenna Design and Analysis
  • Radio Frequency Integrated Circuit Design
  • Millimeter-Wave Propagation and Modeling
  • Advanced Antenna and Metasurface Technologies
  • Antenna Design and Optimization
  • Photonic and Optical Devices

The scientist has a significant publication record with frequent venues including:

  • IEEE Transactions on Antennas and Propagation
  • IEEE Access
  • 2022 16th European Conference on Antennas and Propagation (EuCAP)
  • IEEE Antennas and Wireless Propagation Letters
  • IEEE Transactions on Microwave Theory and Techniques

Their recent published papers include:

  • "Dual-Polarized Highly Folded Bowtie Antenna With Slotted Self-Grounded Structure for Sub-6 GHz 5G Applications" (2021, IEEE Transactions on Antennas and Propagation)
  • "Fully-Planar Ultrawideband Tightly-Coupled Array (FPU-TCA) With Integrated Feed for Wide-Scanning Millimeter-Wave Applications" (2020, IEEE Transactions on Antennas and Propagation)
  • "Millimeter-Wave Ultrawideband Circularly Polarized Planar Array Antenna Using Bold-C Spiral Elements With Concept of Tightly Coupled Array" (2020, IEEE Transactions on Antennas and Propagation)
  • "Groove Gap Waveguide Filter Based on Horizontally Polarized Resonators for V-Band Applications" (2020, IEEE Transactions on Microwave Theory and Techniques)
  • "Single Layer Dual Circularly Polarized Antenna Array Based on Ridge Gap Waveguide for 77 GHz Automotive Radar" (2022, IEEE Transactions on Antennas and Propagation)

Ashraf Uz Zaman has collaborated frequently with other researchers, notably:

  • Marianna Ivashina
  • Francesco P. Andriulli
  • A. J. Epstein
  • Jiro Hirokawa
  • Ashwin K. Iyer

Best Publications

  • Design and experimental verification of ridge gap waveguide in bed of nails for parallel-plate mode suppression

    Per-Simon Kildal;Ashraf Uz Zaman;Eva Rajo-Iglesias;Esperanza Alfonso

  • Wide-Band Slot Antenna Arrays With Single-Layer Corporate-Feed Network in Ridge Gap Waveguide Technology

    Ashraf Uz Zaman;Per-Simon Kildal

  • Parallel Plate Cavity Mode Suppression in Microstrip Circuit Packages Using a Lid of Nails

    E. Rajo-Iglesias;A.U. Zaman;P.-S. Kildal

  • Design and Fabrication of a High-Gain 60-GHz Corrugated Slot Antenna Array With Ridge Gap Waveguide Distribution Layer

    Davoud Zarifi;Ali Farahbakhsh;Ashraf Uz Zaman;Per-Simon Kildal

  • Gap Waveguide Technology for Millimeter-Wave Antenna Systems

    Eva Rajo-Iglesias;Miguel Ferrando-Rocher;Ashraf Uz Zaman

  • Narrow-Band Microwave Filter Using High-Q Groove Gap Waveguide Resonators With Manufacturing Flexibility and No Sidewalls

    A. U. Zaman;P. Kildal;A. A. Kishk

  • Gap Waveguide PMC Packaging for Improved Isolation of Circuit Components in High-Frequency Microwave Modules

    Ashraf Uz Zaman;Mats Alexanderson;Tin Vukusic;Per-Simon Kildal

  • Ka-Band Gap Waveguide Coupled-Resonator Filter for Radio Link Diplexer Application

    Esperanza Alfonso Alos;Ashraf Uz Zaman;Per-Simon Kildal

  • Design and Fabrication of a High-Gain 60-GHz Cavity-Backed Slot Antenna Array Fed by Inverted Microstrip Gap Waveguide

    Jinlin Liu;Abbas Vosoogh;Ashraf Uz Zaman;Jian Yang

  • $W$ -Band Low-Profile Monopulse Slot Array Antenna Based on Gap Waveguide Corporate-Feed Network

    Abbas Vosoogh;Abolfazl Haddadi;Ashraf Uz Zaman;Jian Yang

  • 60-GHz Groove Gap Waveguide Based Wideband $H$ -Plane Power Dividers and Transitions: For Use in High-Gain Slot Array Antenna

    Ali Farahbakhsh;Davoud Zarifi;Ashraf Uz Zaman

  • A mmWave Wideband Slot Array Antenna Based on Ridge Gap Waveguide With 30% Bandwidth

    Ali Farahbakhsh;Davoud Zarifi;Ashraf Uz Zaman

  • A Slot Array Antenna With Single-Layered Corporate-Feed Based on Ridge Gap Waveguide in the 60 GHz Band

    Jinlin Liu;Abbas Vosoogh;Ashraf Uz Zaman;Jian Yang

  • Study of Q-factors of ridge and groove gap waveguide resonators

    Elena Pucci;Ashraf Uz Zaman;Eva Rajo-Iglesias;Per-Simon Kildal

  • Improved Microstrip Filters Using PMC Packaging by Lid of Nails

    A. A. Brazalez;A. U. Zaman;P. Kildal

  • $8 imes8\,\,Ka$ -Band Dual-Polarized Array Antenna Based on Gap Waveguide Technology

    Miguel Ferrando-Rocher;Jose Ignacio Herranz-Herruzo;Alejandro Valero-Nogueira;Bernardo Bernardo-Clemente

  • Dual-polarized highly folded Bowtie antenna with slotted self grounded structure for sub 6 GHz 5G applications

    Mohammad Alibakhshikenari;Bal S. Virdee;Chan Hwang See;Pancham Shukla

  • Design of a Simple Transition From Microstrip to Ridge Gap Waveguide Suited for MMIC and Antenna Integration

    Ashraf Uz Zaman;Tin Vukusic;Mats Alexanderson;Per-Simon Kildal

  • An Integrated Ka-Band Diplexer-Antenna Array Module Based on Gap Waveguide Technology With Simple Mechanical Assembly and No Electrical Contact Requirements

    Abbas Vosoogh;Milad Sharifi Sorkherizi;Ashraf Uz Zaman;Jian Yang

  • A Gap Waveguide-Fed Wideband Patch Antenna Array for 60-GHz Applications

    Davoud Zarifi;Ali Farahbakhsh;Ashraf Uz Zaman

Frequent Co-Authors

Per-Simon Kildal
Per-Simon Kildal Chalmers University of Technology
Jian Yang
Jian Yang Tsinghua University
Eva Rajo-Iglesias
Eva Rajo-Iglesias Carlos III University of Madrid
Peter Enoksson
Peter Enoksson Chalmers University of Technology
Ahmed A. Kishk
Ahmed A. Kishk Concordia University
Herbert Zirath
Herbert Zirath Chalmers University of Technology
Bal Singh Virdee
Bal Singh Virdee London Metropolitan University
Ernesto Limiti
Ernesto Limiti University of Rome Tor Vergata
Thomas Eriksson
Thomas Eriksson Chalmers University of Technology
Mohammad Alibakhshikenari
Mohammad Alibakhshikenari University of Galway

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