S. Hopfer

411 total citations
9 papers, 305 citations indexed

About

S. Hopfer is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Astronomy and Astrophysics. According to data from OpenAlex, S. Hopfer has authored 9 papers receiving a total of 305 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Electrical and Electronic Engineering, 3 papers in Atomic and Molecular Physics, and Optics and 1 paper in Astronomy and Astrophysics. Recurrent topics in S. Hopfer's work include Radio Frequency Integrated Circuit Design (4 papers), Microwave Engineering and Waveguides (4 papers) and Gyrotron and Vacuum Electronics Research (3 papers). S. Hopfer is often cited by papers focused on Radio Frequency Integrated Circuit Design (4 papers), Microwave Engineering and Waveguides (4 papers) and Gyrotron and Vacuum Electronics Research (3 papers). S. Hopfer collaborates with scholars based in United States. S. Hopfer's co-authors include Y. Shani, J. Adelman and R. Ben-Michael and has published in prestigious journals such as IEEE Transactions on Microwave Theory and Techniques, Journal of Lightwave Technology and IEEE Transactions on Instrumentation and Measurement.

In The Last Decade

S. Hopfer

8 papers receiving 257 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
S. Hopfer United States	5	284	121	87	23	13	9	305
T.G. Bryant United States	5	280 1.0×	124 1.0×	77 0.9×	20 0.9×	14 1.1×	9	299
M. Rittweger Germany	10	237 0.8×	71 0.6×	58 0.7×	8 0.3×	21 1.6×	31	255
Gershon J. Wheeler United States	3	347 1.2×	179 1.5×	33 0.4×	7 0.3×	16 1.2×	8	366
Yasutake Hirachi Japan	11	406 1.4×	161 1.3×	105 1.2×	19 0.8×	9 0.7×	56	419
J. Lange United States	5	350 1.2×	137 1.1×	45 0.5×	23 1.0×	32 2.5×	9	366
L. A. Rud Ukraine	10	242 0.9×	127 1.0×	98 1.1×	15 0.7×	6 0.5×	51	276
R. Pasquinelli United States	7	127 0.4×	94 0.8×	52 0.6×	8 0.3×	52 4.0×	44	159
S. Sensiper United States	5	150 0.5×	101 0.8×	109 1.3×	4 0.2×	16 1.2×	9	211
M.P. De Lisio United States	10	304 1.1×	165 1.4×	86 1.0×	57 2.5×	14 1.1×	18	333
C. Chin Hong Kong	7	319 1.1×	220 1.8×	41 0.5×	26 1.1×	15 1.2×	8	337

Countries citing papers authored by S. Hopfer

Since Specialization

Citations

This map shows the geographic impact of S. Hopfer's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by S. Hopfer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites S. Hopfer more than expected).

Fields of papers citing papers by S. Hopfer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by S. Hopfer. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by S. Hopfer. The network helps show where S. Hopfer may publish in the future.

Co-authorship network of co-authors of S. Hopfer

This figure shows the co-authorship network connecting the top 25 collaborators of S. Hopfer. A scholar is included among the top collaborators of S. Hopfer based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with S. Hopfer. S. Hopfer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

9 of 9 papers shown

1.

Hopfer, S.. (2005). A Hybrid Coupler for Microstrip Configuration. 79. 428–430. 1 indexed citations

2.

Hopfer, S., et al.. (1998). A novel, wideband, lithium niobate electrooptic modulator. Journal of Lightwave Technology. 16(1). 73–77. 8 indexed citations

3.

Adelman, J., et al.. (1989). The design of millimeter-wave control components. IEEE Transactions on Microwave Theory and Techniques. 37(2). 317–323. 1 indexed citations

4.

Hopfer, S., et al.. (1980). An Ultra Broad-Band (200 kHz-26 GHz) High-Sensitivity Probe. IEEE Transactions on Instrumentation and Measurement. 29(4). 445–451. 7 indexed citations

5.

Hopfer, S.. (1979). Analog phase shifter for 8-18 GHz. MiJo. 22. 48–50. 9 indexed citations

6.

Hopfer, S.. (1979). Analog phase shifter for the 8-18GHz range. 166–167. 5 indexed citations

7.

Hopfer, S.. (1972). An Ultra-Broadband Probe for RF Radiation Measurements. 1–2. 1 indexed citations

8.

Hopfer, S.. (1972). The Design of Broad-Band Resistive Radiation Probes. IEEE Transactions on Instrumentation and Measurement. 21(4). 416–421. 4 indexed citations

9.

Hopfer, S.. (1955). The Design of Ridged Waveguides. IEEE Transactions on Microwave Theory and Techniques. 3(5). 20–29. 269 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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