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Technical Committee on Antennas and Propagation (AP) (Searched in: 2007)
Search Results: Keywords 'from:2007-05-17 to:2007-05-17'
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP | 2007-05-17 13:00 |
Kochi | Kochi Univ. of Tech. | Optimization of Compact MIMO Terminal Antenna Employing Yagi-Uda Array with Common Director Elements Naoki Honma, Kentaro Nishimori, Yasushi Takatori, Atsushi Ohta, Shuji Kubota (NTT)  AP2007-13 |
The required terms for the MIMO terminal antenna are: being small, having a high SNR (Signal to Noise Ratio) and low spa... [more] | AP2007-13 pp.1-6 |
| AP | 2007-05-17 13:25 |
Kochi | Kochi Univ. of Tech. | Directional Antenna Configuration of Indoor Base Station Antennas Considering Aspect Ratio of Rooms for MIMO systems Daisuke Uchida, Taihei Michihata, Hiroyuki Arai (Yokohama National Univ.), Yuki Inoue, Keizo Cho, Tamami Maruyama (NTT DoCoMo, Inc.) AP2007-14 |
We have examined the efficiency in the introduction of the directional antenna to the base station for the indoor propag... [more] | AP2007-14 pp.7-12 |
| AP | 2007-05-17 13:50 |
Kochi | Kochi Univ. of Tech. | Spatial opportunity for cognitive radios under directional interference Kentaro Nishimori, Rocco Di Taranto (NTT), Hiroyuki Yomo, Petar Popovski (Aalborg Univ.), Yasushi Takatori (NTT), Ramjee Prasad (Aalborg Univ.), Shuji Kubota (NTT) AP2007-15 |
In this paper, the possibility for a short--range cognitive radio (secondary communication system) to be located within... [more] |
AP2007-15 pp.13-18 |
| AP | 2007-05-17 14:15 |
Kochi | Kochi Univ. of Tech. | A Basic Study on Handset MIMO Antenna using L-shaped Folded Monopole Antennas Yongho Kim (National Defense Academy), Toshiteru Hayashi, Yoshio Koyanagi (Panasonic Mobile Communications), Hisashi Morishita (National Defense Academy) AP2007-16 |
In this study, handset MIMO antenna comprising two L-shaped Folded Monopole Antennas mounted on a finite ground plane wa... [more] | AP2007-16 pp.19-23 |
| AP | 2007-05-17 14:55 |
Kochi | Kochi Univ. of Tech. | Effects of Angle Spread on Equal Ratio Space Array Antenna with Offset Feed Ryo Yamaguchi, Huiling Jiang, Keizo Cho (NTT DoCoMo, Inc.) AP2007-17 |
[more] | AP2007-17 pp.25-30 |
| AP | 2007-05-17 15:20 |
Kochi | Kochi Univ. of Tech. | Adaptive beamforming with Multiport Parasitic Array Radiator Antenna Masayuki Morishita (Niigata Univ.), Chen Sun, Makoto Taromaru (ATR), Hiroyoshi Yamada (Niigata Univ./ATR), Takashi Ohira (ATR) AP2007-18 |
A digital beamforming (DBF) array performs adaptive beamforming by digital signal processing. However, the circuit scale... [more] | AP2007-18 pp.31-35 |
| AP | 2007-05-17 15:45 |
Kochi | Kochi Univ. of Tech. | Analysis of Incoming Waves Distribution on Vertical Plane in Urban Area and Evaluation of Base Station Antenna Effective Gain Koshiro Kitao, Tetsuro Imai (NTT DoCoMo) AP2007-19 |
In cellular systems, in order to reduce interferences to neighboring cells, we generally use the base station (BS) anten... [more] | AP2007-19 pp.37-42 |
| AP | 2007-05-17 16:30 |
Kochi | Kochi Univ. of Tech. | [Special Talk]
Toward realizing surrounding computing Makoto Iwata (Kochi Univ. of Tech.) |
[more] | |
| AP | 2007-05-18 10:00 |
Kochi | Kochi Univ. of Tech. | Two Element Phased Array Dipole Antenna on EBG Ground Plane Shinya Tanaka, Mitsuo Taguchi (Nagasaki Univ.) AP2007-20 |
The two element array dipole antenna with 90°phase difference feed located on the finite sized EBG ground plane is numer... [more] | AP2007-20 pp.43-46 |
| AP | 2007-05-18 10:25 |
Kochi | Kochi Univ. of Tech. | Radiatin properties of rectangular microstrip antenna located by EBG structures Yuki Kawakami, Toshikazu Hori, Mitoshi Fujimoto (Univ. Fukui), Ryo Yamaguchi, Keizo Cho (NTT Docomo) AP2007-21 |
EBG (Electromagnetic Band-Gap) structures composed of metal patches arranged at small intervals have been studied to app... [more] | AP2007-21 pp.47-50 |
| AP | 2007-05-18 10:50 |
Kochi | Kochi Univ. of Tech. | Evaluation of the Near-Field UWB Transmission Characteristics Using the MR-FDTD Method Applied to the Parallel Computing Ken-ichi Asanuma, Katsuhiro Fujimoto, Yuichi Yokota, Tadahiko Maeda (Ritsumeikan Univ.) AP2007-22 |
To assess the actual performance of UWB transmission systems, various relative angles between the transmitting antenna a... [more] | AP2007-22 pp.51-56 |
| AP | 2007-05-18 11:15 |
Kochi | Kochi Univ. of Tech. | A Study on the Band-rejection Characteristics of the Frequency Notched UWB Antenna Placed in the Vicinity of a Human Hand Keiichi Yoshitomi, Ken-ichi Asanuma, Yuichi Yokota, Tadahiko Maeda (Ritsumeikan Univ.) AP2007-23 |
Ultra wide-band (UWB) technology is one of the most promising solutions for the future wireless communication systems d... [more] |
AP2007-23 pp.57-62 |
| AP | 2007-05-18 13:00 |
Kochi | Kochi Univ. of Tech. | An experimental study for a fast and high-resolution 3-D imaging algorithm with linear array antennas for UWB pulse radars Shouhei Kidera, Yusuke Kani, Takuya Sakamoto, Toru Sato (Kyoto Univ.) AP2007-24 |
Pulse radars with UWB signals are promising as a high-resolution imaging technique that can be used for a non-destru... [more] |
AP2007-24 pp.63-68 |
| AP | 2007-05-18 13:25 |
Kochi | Kochi Univ. of Tech. | The system for detection and visualization of a radio source Takafumi Nakabayashi, Hiroyuki Arai (Yokohama National Univ.) AP2007-25 |
Unlicenced repeaters often cause interferences to current mobile communication systems due to its spurious radiation. To... [more] | AP2007-25 pp.69-73 |
| AP | 2007-05-18 13:50 |
Kochi | Kochi Univ. of Tech. | Classification of Terrain Using the Correlation Coefficient in the Circular Polarization Basis for the X-band Pi-SAR image. Yoshio Yamaguchi, Yukari Yamamoto, Hiroyoshi Yamada (Niigata Univ.) AP2007-26 |
Classification of terrain is one of the most important applications of Polarimetric Synthetic Aperture Radar (POLSAR) im... [more] | AP2007-26 pp.75-80 |
| AP | 2007-05-18 14:15 |
Kochi | Kochi Univ. of Tech. | Proposal of Radio Wave Shutter Using Electrically Invisible Dipoles and Basic Study on Its Transparent and Shield Performance Kyoichi Iigusa (NICT/Tokyo Inst.of Techn.), Hiroshi Harada, Shuzo Kato (NICT), Jiro Hirokawa, Makoto Ando (TIT) AP2007-27 |
We propose a radio-wave shutter, which can switch electronically transparent state and shield state, using the mechanism... [more] | AP2007-27 pp.81-86 |
| AP | 2007-05-18 15:00 |
Kochi | Kochi Univ. of Tech. | Applications of the PSTD Method to Dipole Antenna Analysis Fumihiro Okubo, Toru Uno, Takuji Arima (TUAT) AP2007-28 |
The PseudoSpectral Time-Domain (PSTD) technique in which the Fast Fourier Transform (FFT) is used to approximate spatial... [more] | AP2007-28 pp.87-90 |
| AP | 2007-05-18 15:25 |
Kochi | Kochi Univ. of Tech. | Balun-Integrated 3-Stacked Meander Line Antenna Satoshi Yoshida, Atsushi Tosaki, Hiroshi Oguma, Suguru Kameda, Hiroyuki Nakase, Tadashi Takagi, Kazuo Tsubouchi (Tohoku Univ.) AP2007-29 |
A balun is indispensable to connect balanced antenna with single-end devices. If we design only small balanced antenna, ... [more] | AP2007-29 pp.91-96 |
| AP | 2007-05-18 15:50 |
Kochi | Kochi Univ. of Tech. | Confiuration of switched-element polyhedral array antennas Ayako Takahashi, Toshikazu Hori, Mitoshi Fujimoto (Univ. Fukui), Kiyotake Ando, Yozo Takeda (JSAT) AP2007-30 |
A conformal array antenna arranged on the curved surface features to steer a beam in the hemisphere. However, many eleme... [more] | AP2007-30 pp.97-100 |
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