Yoichiro Takayama

541 total citations
53 papers, 419 citations indexed

About

Yoichiro Takayama is a scholar working on Electrical and Electronic Engineering, Condensed Matter Physics and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Yoichiro Takayama has authored 53 papers receiving a total of 419 indexed citations (citations by other indexed papers that have themselves been cited), including 52 papers in Electrical and Electronic Engineering, 16 papers in Condensed Matter Physics and 9 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Yoichiro Takayama's work include Radio Frequency Integrated Circuit Design (40 papers), Advanced Power Amplifier Design (33 papers) and GaN-based semiconductor devices and materials (16 papers). Yoichiro Takayama is often cited by papers focused on Radio Frequency Integrated Circuit Design (40 papers), Advanced Power Amplifier Design (33 papers) and GaN-based semiconductor devices and materials (16 papers). Yoichiro Takayama collaborates with scholars based in Japan. Yoichiro Takayama's co-authors include Kazuhiko Honjo, Ryo Ishikawa, Takayuki Fujita, Kazusuke Maenaka, Masaaki Kuzuhara, J. Sone, Hiroshi Mizutani, A. Higashisaka, Fumio Hasegawa and Kôji Uchida and has published in prestigious journals such as Applied Physics Letters, IEEE Transactions on Microwave Theory and Techniques and Japanese Journal of Applied Physics.

In The Last Decade

Yoichiro Takayama

50 papers receiving 399 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Yoichiro Takayama Japan 12 366 96 88 69 33 53 419
N. Yokoyama Japan 13 404 1.1× 64 0.7× 161 1.8× 77 1.1× 70 2.1× 32 470
Y. Yoshida Japan 11 209 0.6× 51 0.5× 107 1.2× 65 0.9× 20 0.6× 48 311
Jesse B. Tucker United States 8 280 0.8× 85 0.9× 78 0.9× 18 0.3× 20 0.6× 28 330
H. Ziad Belgium 11 405 1.1× 215 2.2× 140 1.6× 107 1.6× 44 1.3× 20 476
Chunsheng Guo China 11 260 0.7× 173 1.8× 73 0.8× 26 0.4× 24 0.7× 75 330
Roberto Lacerda de Orio Austria 9 336 0.9× 28 0.3× 110 1.3× 27 0.4× 50 1.5× 74 392
Young-Kil Kwon South Korea 13 172 0.5× 245 2.6× 84 1.0× 142 2.1× 30 0.9× 35 365
Masafumi Iwaki Japan 12 224 0.6× 68 0.7× 180 2.0× 342 5.0× 46 1.4× 23 374
Roger D. Meredith United States 10 298 0.8× 34 0.4× 33 0.4× 60 0.9× 15 0.5× 27 384
Jiang Lu China 11 516 1.4× 68 0.7× 143 1.6× 18 0.3× 64 1.9× 38 634

Countries citing papers authored by Yoichiro Takayama

Since Specialization
Citations

This map shows the geographic impact of Yoichiro Takayama'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 Yoichiro Takayama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Yoichiro Takayama more than expected).

Fields of papers citing papers by Yoichiro Takayama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Yoichiro Takayama. 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 Yoichiro Takayama. The network helps show where Yoichiro Takayama may publish in the future.

Co-authorship network of co-authors of Yoichiro Takayama

This figure shows the co-authorship network connecting the top 25 collaborators of Yoichiro Takayama. A scholar is included among the top collaborators of Yoichiro Takayama 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 Yoichiro Takayama. Yoichiro Takayama is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
2.
Ishikawa, Ryo, Yoichiro Takayama, & Kazuhiko Honjo. (2018). Fully Integrated Asymmetric Doherty Amplifier Based on Two-Power-Level Impedance Optimization. 1221–1224. 1 indexed citations
3.
Ishikawa, Ryo, Yoichiro Takayama, & Kazuhiko Honjo. (2018). Fully Integrated Asymmetric Doherty Amplifier Based on Two-Power-Level Impedance Optimization. 253–256. 12 indexed citations
4.
Ishikawa, Ryo, Yoichiro Takayama, & Kazuhiko Honjo. (2017). Concurrent dual-band access GaN HEMT MMIC amplifier suppressing inter-band interference. 2045–2048. 7 indexed citations
5.
Ishikawa, Ryo, et al.. (2016). Microwave Characteristics of an Independently Biased 3-Stack InGaP/GaAs HBT Configuration. IEEE Transactions on Circuits and Systems I Regular Papers. 64(5). 1140–1151. 5 indexed citations
6.
Takayama, Yoichiro, et al.. (2015). Power gain performance enhancement of independently biased heterojunction bipolar transistor cascode chip. Japanese Journal of Applied Physics. 54(4S). 04DF11–04DF11. 4 indexed citations
7.
Takayama, Yoichiro, et al.. (2014). Two signal power level design for shunt-connected type GaN HEMT Doherty power amplifier without a quarter-wave inverter. Asia-Pacific Microwave Conference. 1004–1006. 2 indexed citations
8.
Ishikawa, Ryo, Yoichiro Takayama, & Kazuhiko Honjo. (2012). Design Method for GHz-Band Harmonics Treatment High Efficiency Power Amplifiers Using MHz-Band Active Harmonics Load-Pull System. IEICE Technical Report; IEICE Tech. Rep.. 112(312). 1–6.
9.
Takayama, Yoichiro & Kazuhiko Honjo. (2012). Proposals of compact broadband microwave Doherty amplifiers with generalized output-combining condition. IEICE Technical Report; IEICE Tech. Rep.. 112(312). 7–12. 6 indexed citations
10.
Takayama, Yoichiro, et al.. (2012). A broadband Doherty power amplifier without a quarter-wave impedance inverting network. 361–363. 12 indexed citations
11.
Takayama, Yoichiro, et al.. (2011). A High-Efficiency Low-Distortion GaN HEMT Doherty Power Amplifier With a Series-Connected Load. IEEE Transactions on Microwave Theory and Techniques. 60(2). 352–360. 22 indexed citations
12.
Takayama, Yoichiro, et al.. (2010). Distortion reduction of a GaN HEMT Doherty power amplifier with a series connected load. Asia-Pacific Microwave Conference. 658–661. 1 indexed citations
13.
Takayama, Yoichiro, et al.. (2009). A GaN HEMT Doherty amplifier with a series connected load. 325–328. 11 indexed citations
14.
Takayama, Yoichiro & Kazuhiko Honjo. (2008). A Doherty Power Amplifier with a Series Connected Load. IEICE Technical Report; IEICE Tech. Rep.. 108(13). 47–52. 2 indexed citations
15.
Takayama, Yoichiro. (1997). Considerations for High-Efficiency Operation of Microwave Transistor Power Amplifiers. IEICE Transactions on Electronics. 80(6). 726–733. 4 indexed citations
16.
Okamoto, Yasuhiro, et al.. (1997). Power Heterojunction FET with High Breakdown Voltage for X- and Ku-Band Applications. IEICE Transactions on Electronics. 80(6). 746–750. 1 indexed citations
17.
Higashisaka, A., et al.. (1983). High-Speed E/D GaAs ICs with Closely-Spaced FET Electrodes. Japanese Journal of Applied Physics. 22(S1). 335–335. 4 indexed citations
18.
Kuzuhara, Masaaki, et al.. (1982). Infrared rapid thermal annealing of Si-implanted GaAs. Applied Physics Letters. 41(8). 755–758. 52 indexed citations
19.
Sone, J. & Yoichiro Takayama. (1979). Ku- and K-band internally matched high-power GaAs f.e.t. amplifiers. Electronics Letters. 15(18). 562–564. 5 indexed citations
20.
Sone, J., et al.. (1979). 14-GHz band 1 watt GaAs f.e.t. amplifier. Electronics Letters. 15(7). 212–213. 2 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by N. Yokoyama Breakdown of academic impact, for papers by Y. Yoshida Breakdown of academic impact, for papers by Jesse B. Tucker Breakdown of academic impact, for papers by H. Ziad Breakdown of academic impact, for papers by Chunsheng Guo Breakdown of academic impact, for papers by Roberto Lacerda de Orio Breakdown of academic impact, for papers by Young-Kil Kwon Breakdown of academic impact, for papers by Masafumi Iwaki Breakdown of academic impact, for papers by Roger D. Meredith Breakdown of academic impact, for papers by Jiang Lu
Rankless by CCL
2026