| Discipline name | D-Index | World Ranking | Current World Ranking | National Ranking | Current National Ranking | Publications | Citations |
|---|---|---|---|---|---|---|---|
| Electronics and Electrical Engineering | 57 | 1983 | 1900 | 58 | 56 | 269 | 11829 |
The chart shows the history of publications by Ullrich R. Pfeiffer between 1996 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ullrich R. Pfeiffer published across 30 years, from 1996 to 2025, averaging 9.9 papers a year. Output peaked at 29 publications in 2006. 16 of the 298 publications appeared in the last two years.
298 publications in total across all disciplines
| Year | Publications |
|---|---|
| 1996 | 1 |
| 1997 | 0 |
| 1998 | 1 |
| 1999 | 3 |
| 2000 | 3 |
| 2001 | 3 |
| 2002 | 2 |
| 2003 | 4 |
| 2004 | 5 |
| 2005 | 13 |
| 2006 | 29 |
| 2007 | 12 |
| 2008 | 9 |
| 2009 | 11 |
| 2010 | 9 |
| 2011 | 10 |
| 2012 | 13 |
| 2013 | 10 |
| 2014 | 15 |
| 2015 | 15 |
| 2016 | 15 |
| 2017 | 15 |
| 2018 | 20 |
| 2019 | 16 |
| 2020 | 16 |
| 2021 | 15 |
| 2022 | 7 |
| 2023 | 10 |
| 2024 | 9 |
| 2025 | 7 |
| Total | 298 |
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 Ullrich R. Pfeiffer sits on this spectrum.
This scientist: 269 publications — 50th percentile
50% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 1,065 publications or more.
| 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 | 269 |
| 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 |
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 Ullrich R. Pfeiffer sits on this spectrum.
This scientist: 57 D-Index — 72nd percentile
72% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 111 D-Index or more.
| D-Index | Scientists | This scientist |
|---|---|---|
| 30 | 178 | |
| 31 | 257 | |
| 32 | 263 | |
| 33 | 262 | |
| 34 | 244 | |
| 35 | 236 | |
| 36 | 211 | |
| 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 | 57 |
| 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 |
Ullrich R. Pfeiffer is affiliated with the University of Wuppertal in Germany and has contributed extensively to the fields of engineering and physics, with a specialization in electrical and electronic engineering. Their research primarily focuses on terahertz technology and applications, radio frequency integrated circuit design, microwave engineering and waveguides, photonic and optical devices, superconducting and THz device technology, millimeter-wave propagation and modeling, and semiconductor materials and devices.
The scientist has published numerous papers in respected venues, often collaborating with a number of frequent co-authors. The main publication venues include:
Frequent co-authors in Pfeiffer's body of work encompass:
Recent papers illustrate Pfeiffer's active presence in terahertz and microwave research. Notable publications include:
Their research is situated at the intersection of electrical engineering and physics, with subfields including astronomy and astrophysics, nuclear and high energy physics, atomic and molecular physics and optics, and spectroscopy. Pfeiffer's main fields of study underscore a substantial contribution to engineering, especially in electrical and electronic engineering, supported by a significant presence in physics and astronomy-related disciplines.
Overall, the researcher's work spans multiple high-technology topics connected to terahertz frequencies, integrated circuit design, and specialized device technologies, marking an interdisciplinary engagement across microwave, photonic, and semiconductor domains.
E. Ojefors;U.R. Pfeiffer;A. Lisauskas;H.G. Roskos
R. Al Hadi;H. Sherry;J. Grzyb;Yan Zhao
S.K. Reynolds;B.A. Floyd;U.R. Pfeiffer;T. Beukema
Alvydas Lisauskas;Ullrich Pfeiffer;Erik Öjefors;Peter Haring Bolìvar
B.A. Floyd;S.K. Reynolds;U.R. Pfeiffer;T. Zwick
Philipp Hillger;Janusz Grzyb;Ritesh Jain;Ullrich R. Pfeiffer
R Achenbach;P Adragna;V Andrei;P Apostologlou
B. Floyd;S. Reynolds;U. Pfeifer;T. Beukema
Gaucher Brian Paul;Liu Duixian;Pfeiffer Ullrich Richard Rudolf;Zwick Thomas Martin
U.R. Pfeiffer;J. Grzyb;Duixian Liu;B. Gaucher
E Öjefors;B Heinemann;U R Pfeiffer
U.R. Pfeiffer;D. Goren
Pedro Rodriguez-Vazquez;Janusz Grzyb;Bernd Heinemann;Ullrich R. Pfeiffer
S. Reynolds;B. Floyd;U. Pfeiffer;T. Zwick
Neelanjan Sarmah;Janusz Grzyb;Konstantin Statnikov;Stefan Malz
E. Ojefors;B. Heinemann;U. R. Pfeiffer
U.R. Pfeiffer
Janusz Grzyb;Yan Zhao;U. R. Pfeiffer
Erik Ojefors;Janus Grzyb;Yan Zhao;Bernd Heinemann
Diana Glaab;Sebastian Boppel;Alvydas Lisauskas;Ullrich Pfeiffer
Hani Sherry;Janusz Grzyb;Yan Zhao;Richard Al Hadi
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