• 540 Citations
  • 12 h-Index
1988 …2019

Research output per year

If you made any changes in Pure these will be visible here soon.

Research Output

2008

A cooperative sensing technique with weighting based on distance between radio stations

Matsui, M., Shiba, H., Akabane, K. & Uehara, K., Dec 1 2008, 2008 14th Asia-Pacific Conference on Communications, APCC 2008. 4773672. (2008 14th Asia-Pacific Conference on Communications, APCC 2008).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

A very low spurious X-band frequency quadrupler with very high integration using 3D-MMIC technology

Yamaguchi, Y., Kaho, T. & Uehara, K., Nov 2008, In : IEICE Transactions on Electronics. E91-C, 11, p. 1744-1750 7 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Channel assignment and reallocation algorithms for cognitive radio systems

Hiraga, K., Akabane, K., Shiba, H. & Uehara, K., Dec 1 2008, 2008 14th Asia-Pacific Conference on Communications, APCC 2008. 4773702. (2008 14th Asia-Pacific Conference on Communications, APCC 2008).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Performance evaluation of an autonomous adaptive base station that supports multiple wireless network systems

Akabane, K., Shiba, H., Matsui, M. & Uehara, K., Jan 1 2008, In : IEICE Transactions on Communications. E91-B, 1, p. 22-28 7 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Prototype of a cognitive radio system with cooperative sensing and interference alerting

Matsui, M., Akabane, K., Shiba, H. & Uehara, K., Sep 23 2008, Proceedings of the 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CrownCom 2008. 4562482. (Proceedings of the 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CrownCom 2008).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)
2007

A highly integrated quasi-millimeter wave receiver chip using 3D-MMIC technology

Kaho, T., Yamaguchi, Y., Uehara, K., Nagamine, S., Toriyama, Y. & Taniguchi, T., Dec 1 2007, European Microwave Week 2007 Conference Proceedings, EuMW 2007 - 2nd European Microwave Integrated Circuits Conference, EuMIC 2007. p. 12-15 4 p. 4412635. (European Microwave Week 2007 Conference Proceedings, EuMW 2007 - 2nd European Microwave Integrated Circuits Conference, EuMIC 2007).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

A highly integrated quasi-millimeter wave transmitter MMIC using 3D-MMIC technology

Yamaguchi, Y., Kaho, T., Uehara, K., Nagamine, S., Toriyama, Y., Shirosaki, T. & Taniguchi, T., Dec 1 2007, 2007 Asia-Pacific Microwave Conference, APMC. 4555130. (Asia-Pacific Microwave Conference Proceedings, APMC).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

A highly integrated X-band frequency quadrupler MMIC using 3D-MMIC technology

Yamaguchi, Y., Kaho, T. & Uehara, K., Oct 2 2007, Proceedings of the 2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007. p. 757-760 4 p. 4266541. (Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

An autonomous adaptive base station that supports multiple wireless network systems

Akabane, K., Shiba, H., Matsui, M. & Uehara, K., Jan 1 2007, 2007 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks. IEEE Computer Society, p. 85-88 4 p. 4221480. (2007 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

A novel cooperative sensing technique for cognitive radio

Matsui, M., Shiba, H., Akabane, K. & Uehara, K., Dec 1 2007, 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07. 4394725. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

27 Citations (Scopus)

Broadband low noise amplifier with high linearity for software-defined radios

Kawashima, M., Yamaguchi, Y., Nishikawa, K. & Uehara, K., Dec 1 2007, European Microwave Week 2007 Conference Proceedings, EUMIC 2007 - 10th European Conference on Wireless Technology, ECWT 2007. p. 323-326 4 p. 4404012. (European Microwave Week 2007 Conference Proceedings, EuMW 2007 - 10th European Conference on Wireless Technology, ECWT 2007).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Broadband low noise amplifier with high linearity for software-defined radios

Kawashima, M., Yamaguchi, Y., Nishikawa, K. & Uehara, K., Dec 1 2007, European Microwave Week 2007 Conference Proceedings, EuMW 2007 - 2nd European Microwave Integrated Circuits Conference, EuMIC 2007. p. 243-246 4 p. 4412694. (European Microwave Week 2007 Conference Proceedings, EuMW 2007 - 2nd European Microwave Integrated Circuits Conference, EuMIC 2007).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Miniaturized multilayer inductors on GaAs three-dimensional MMIC

Kaho, T., Sasaki, M., Yamaguchi, Y., Nishikawa, K. & Uehara, K., Dec 1 2007, 2007 Korea-Japan Microwave Conference, KJMW2007, Technical Digest 2007. p. 149-152 4 p. 4402262. (2007 Korea-Japan Microwave Conference, KJMW2007, Technical Digest 2007).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)
2006

A dual-band VCO integrated with RF-MEMS switches and inductors

Kawashima, M., Yamaguchi, Y., Kuwabara, K., Sato, N., Machida, K. & Uehara, K., Jan 1 2006, Proceedings of the 36th European Microwave Conference, EuMC 2006. IEEE Computer Society, p. 795-798 4 p. 4057938. (Proceedings of the 36th European Microwave Conference, EuMC 2006).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)
2005

IEEE 802.11 wireless LAN implemented on software defined radio with hybrid programmable architecture

Shono, T., Shirato, Y., Shiba, H., Uehara, K., Araki, K. & Umehira, M., Sep 1 2005, In : IEEE Transactions on Wireless Communications. 4, 5, p. 2299-2308 10 p.

Research output: Contribution to journalArticle

21 Citations (Scopus)

Low propagation loss of atomically-flat surface AlN with low dislocation density for 5-GHz band SAW devices

Uehara, K., Aota, Y., Kameda, S., Nakase, H. & Tsubouchi, K., Dec 1 2005, 2005 IEEE Ultrasonics Symposium. p. 455-458 4 p. 1602891. (Proceedings - IEEE Ultrasonics Symposium; vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Performance evaluation of reconfigurable processor for SDR mobile terminals and SDR base station using autonomous adaptive control technology

Akabane, K., Shiba, H., Matsui, M., Umehira, M. & Uehara, K., Dec 1 2005, 2005 Fifth International Conference on Information, Communications and Signal Processing. p. 148-152 5 p. 1689023. (2005 Fifth International Conference on Information, Communications and Signal Processing; vol. 2005).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)
2004

Fabrication of 5-GHz-band SAW filter with atomically-flat-surface AlN on sapphire

Uehara, K., Yang, C. M., Shibata, T., Kim, S. K., Kameda, S., Nakase, H. & Tsubouchi, K., Dec 1 2004, In : Proceedings - IEEE Ultrasonics Symposium. 1, p. 203-206 4 p.

Research output: Contribution to journalConference article

29 Citations (Scopus)

Growth of AlN film on Mo/SiO2/Si (111) for 5GHz-band FBAR using MOCVD

Yang, C. M., Uehara, K., Aota, Y., Kim, S. K., Kameda, S., Nakase, Y., Isota & Tsubouchi, K., Dec 1 2004, In : Proceedings - IEEE Ultrasonics Symposium. 1, p. 165-168 4 p.

Research output: Contribution to journalConference article

2 Citations (Scopus)
2003

Adaptability Check during Software Installation in Software Defined Radio

Suzuki, Y., Harada, H., Uehara, K., Fujii, T., Yokoyama, Y., Oda, K. & Hidaka, R., Dec 2003, In : IEICE Transactions on Communications. E86-B, 12, p. 3401-3407 7 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

AlN epitaxial film on 6H-SiC(0001) using MOCVD for GHz-band saw devices

Uehara, K., Yang, C. M., Furusho, T., Kim, S. K., Kameda, S., Nakase, H., Nishino, S. & Tsubouchi, K., Dec 1 2003, In : Proceedings of the IEEE Ultrasonics Symposium. 1, p. 905-908 4 p.

Research output: Contribution to journalConference article

10 Citations (Scopus)

Highly c-axis-oriented AlN film using MOCVD for 5GHz-band FBAR filter

Yang, C. M., Uehara, K., Kim, S. K., Kameda, S., Nakase, H. & Tsubouchi, K., Dec 1 2003, In : Proceedings of the IEEE Ultrasonics Symposium. 1, p. 170-173 4 p.

Research output: Contribution to journalConference article

17 Citations (Scopus)

Performance of IEEE 802.11 Wireless LAN implemented on software defined radio with hybrid programmable architecture

Shono, T., Shiba, H., Shirato, Y., Uehara, K., Araki, K. & Umehira, M., Jul 18 2003, In : IEEE International Conference on Communications. 3, p. 2035-2040 6 p.

Research output: Contribution to journalConference article

9 Citations (Scopus)

Proposal and evaluation of security schemes for software-defined radio

Shiba, H., Uehara, K. & Araki, K., Dec 1 2003, PIMRC2003 - 14th IEEE 2003 International Symposium on Personal, Indoor and Mobile Radio Communications, Proceedings. p. 114-118 5 p. 1264243. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Trends in Research and Development of Software Defined Radio

Uehara, K., Araki, K. & Umehira, M., Jul 1 2003, In : NTT Technical Review. 1, 4, p. 10-14 5 p.

Research output: Contribution to journalReview article

6 Citations (Scopus)
2002

AlN epitaxial film with atomically flat surface for GHz-band saw devices

Uehara, K., Yang, C. M., Nakamura, H., Kameda, S., Nakase, H. & Tsubouchi, K., Dec 1 2002, In : Proceedings of the IEEE Ultrasonics Symposium. 1, p. 135-138 4 p.

Research output: Contribution to journalConference article

4 Citations (Scopus)

Design and performance evaluation of software defined radio prototype for PHS and IEEE802.11 wireless LAN

Uehara, K., Shiba, H., Shono, T., Shirato, Y., Yoshioka, H., Nakatsugawa, M., Kubota, S. & Umehira, M., Dec 1 2002, 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2002. p. 452-457 6 p. 1046742. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Proposal and evaluation of system diversity for software defined radio

Shono, T., Uehara, K. & Kubota, S., Jan 1 2002, In : IEEE International Conference on Communications. 1, p. 490-496 7 p.

Research output: Contribution to journalConference article

Software defined radio prototype for PHS and IEEE 802.11 wireless LAN

Shiba, H., Shono, T., Shirato, Y., Toyoda, I., Uehara, K. & Umehira, M., Dec 2002, In : IEICE Transactions on Communications. E85-B, 12, p. 2694-2702 9 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)

System re-configuration and over-the air download functions of the software radio prototype supporting PHS and wireless LAN

Shiba, H., Shono, T., Uehara, K. & Umehira, M., Jan 1 2002, In : IEEE Vehicular Technology Conference. 56, 3, p. 1627-1631 5 p.

Research output: Contribution to journalConference article

2 Citations (Scopus)
2001

Design and evaluation of software radio program on multiprocessor architecture platform for full-duplex real-time communication

Uehara, K., Suzuki, Y., Shiba, H., Tanaka, H., Asai, Y., Shono, T. & Kubota, S., Jan 1 2001, p. G114-G119.

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Design and evaluation of software radio prototype with over-the-air download function

Shiba, H., Shono, T., Uehara, K. & Kubota, S., Jan 1 2001, In : IEEE Vehicular Technology Conference. 4, 54ND, p. 2466-2469 4 p.

Research output: Contribution to journalConference article

Proposal for system diversity on software defined radio

Shono, T., Uehara, K. & Kubota, S., Sep 2001, In : IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E84-A, 9, p. 2346-2358 13 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Standardization activities for software defined radio

Nakatsugawa, M., Sugita, M. & Uehara, K., Jan 1 2001, In : NTT R and D. 50, 1, p. 57-62 6 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Trends in the research and development of software radio

Uehara, K., Nakatsugawa, M., Kubota, S. & Mizuno, H., Jan 1 2001, In : NTT R and D. 50, 1, p. 33-40 8 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2000

Design of software radio for cellular communication systems and wireless LANs

Uehara, K., Tanaka, H., Shiba, H., Suzuki, Y., Nakatsugawa, M., Shirato, Y. & Kubota, S., Dec 1 2000, p. 474-478. 5 p.

Research output: Contribution to conferencePaper

7 Citations (Scopus)

Flexible security systems and a new structure for electronic commerce on software radio

Sugita, M., Uehara, K. & Kubota, S., Dec 1 2000, In : IEEE Vehicular Technology Conference. 6, 52 ND, p. 3033-3040 8 p.

Research output: Contribution to journalConference article

9 Citations (Scopus)

Software radio base and personal stations for cellular/PCS systems

Nakatsugawa, M., Uehara, K., Suzuki, Y. & Kubota, S., Jan 1 2000, In : IEEE Vehicular Technology Conference. 1, p. 617-621 5 p.

Research output: Contribution to journalConference article

1999

Proposal for a novel beam combination method for indoor high-speed wireless communication systems

Uehara, K., Takatori, Y. & Kagoshima, K., Dec 1 1999, In : IEEE Transactions on Vehicular Technology. 48, 5, p. 1511-1517 7 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)
14 Citations (Scopus)
1998
3 Citations (Scopus)

Miniaturization of base station antennas by using adaptive antenna technique for indoor high-speed wireless communication systems

Takatori, Y., Uehara, K. & Kagoshima, K., Dec 1 1998, In : IEEE Vehicular Technology Conference. 1, p. 480-484 5 p.

Research output: Contribution to journalConference article

3 Citations (Scopus)

Time domain analysis of small Multi-Sector Monopole Yagi-Uda Array Antenna mounted on a finite ground plane using FDTD method

Maruyama, T., Uehara, K., Hori, T. & Kagoshima, K., Jan 1 1998, p. 66-72. 7 p.

Research output: Contribution to conferencePaper

1997

Novel beam combination method for indoor high-speed wireless communication systems

Uehara, K. & Kagoshima, K., Jan 1 1997, In : IEEE Vehicular Technology Conference. 3, p. 1758-1762 5 p.

Research output: Contribution to journalConference article

3 Citations (Scopus)

Planar sector antenna for indoor high-speed wireless communication terminals

Uehara, K., Seki, T. & Kagoshima, K., Jan 1 1997, In : IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). 2, p. 1352-1355 4 p.

Research output: Contribution to journalConference article

7 Citations (Scopus)

Three-dimensional active antenna for a high-speed wireless communication application

Seki, T., Uehara, K. & Kagoshima, K., Jan 1 1997, In : IEEE MTT-S International Microwave Symposium Digest. 2, p. 975-978 4 p.

Research output: Contribution to journalConference article

7 Citations (Scopus)
1996

30-GHz multibeam antenna using bi-layer butler matrix circuits

Seki, T., Uehara, K. & Kagoshima, K., Dec 1 1996, In : IEICE Transactions on Communications. E79-B, 12, p. 1778-1783 6 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Analysis and design of multi-sector monopole Yagi-Uda array mounted on a ground plane using moment method

Maruyama, T., Uehara, K. & Kagoshima, K., Jan 1 1996, In : IEE Conference Publication. 420, p. 289-294 6 p.

Research output: Contribution to journalConference article

9 Citations (Scopus)