Keyword : portable telephone

Head Tissue Heterogeneity Required in Computational Dosimetry for Portable Telephones
Jianqing WANG Osamu FUJIWARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/01/01
Vol. E84-B  No. 1 ; pp. 100-105
Type of Manuscript:  PAPER
Category: Electromagnetic Compatibility(EMC)
Keyword: 
computational dosimetry, head tissue heterogeneity, portable telephone, FDTD, 
 Summary | Full Text:PDF(465.6KB)
Reduction of Electromagnetic Absorption in the Human Head for Portable Telephones by a Ferrite Sheet Attachment
Jianqing WANG Osamu FUJIWARA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/12/25
Vol. E80-B  No. 12 ; pp. 1810-1815
Type of Manuscript:  PAPER
Category: Electromagnetic Compatibility
Keyword: 
reduction of SAR, portable telephone, anatomically based head model, FDTD calculation, ferrite sheet, 
 Summary | Full Text:PDF(521.1KB)
Developments in Mobile/Portable Telephones and Key Devices for Miniaturization
Shuuji URABE Toshio NOJIMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/05/25
Vol. E79-C  No. 5 ; pp. 600-605
Type of Manuscript:  INVITED PAPER (Special Issue on Microwave Devices for Mobile Communications)
Category: 
Keyword: 
mobile telephone, portable telephone, microwave devices, Japanese cellular system, radio unit design, 
 Summary | Full Text:PDF(452.9KB)
An Extended Configuration of a Stepped Impedance Comb-Line Filter
Toshio ISHIZAKI Tomoki UWANO Hideyuki MIYAKE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/05/25
Vol. E79-C  No. 5 ; pp. 671-678
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave Devices for Mobile Communications)
Category: Passive Devices
Keyword: 
comb-line filter, stepped impedance resonator, laminated filter, attenuation pole, portable telephone, 
 Summary | Full Text:PDF(568.2KB)
A Novel Low-Power Dissipation and High-Speed Converter-Control-IC for the Transmitting Amplifier of Digital Portable Telephones
Nobuhiko YAMASHITA Takuji SERADA Tatsuo SAKAI Kazuo TSUKAMOTO Toshiaki YACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/12/25
Vol. E77-B  No. 12 ; pp. 1600-1606
Type of Manuscript:  PAPER
Category: Power Supply
Keyword: 
portable telephone, switching DC amplifier, power IC, BiCMOS, converter, 
 Summary | Full Text:PDF(622.8KB)
FDTD Analysis of a Monopole Antenna Mounted on a Conducting Box Covered with a Layer of Dielectric
Li CHEN Toru UNO Saburo ADACHI Raymond J. LUEBBERS 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/12/25
Vol. E76-B  No. 12 ; pp. 1583-1586
Type of Manuscript:  Special Section LETTER (Special Issue on 1992 Internatioal Symposium on Antennas and Propagation)
Category: 
Keyword: 
finite-difference time-domain method, portable telephone, monopole antenna, rectangular conducting box, dielectric cover, 
 Summary | Full Text:PDF(256.7KB)
Effect of Dimension of Conducting Box on Radiation Pattern of a Monopole Antenna for Portable Telephone
Ryo YAMAGUCHI Kunio SAWAYA Yoshiyuki FUJINO Saburo ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/12/25
Vol. E76-B  No. 12 ; pp. 1526-1531
Type of Manuscript:  Special Section PAPER (Special Issue on 1992 Internatioal Symposium on Antennas and Propagation)
Category: 
Keyword: 
mobile communication, portable telephone, Galerkin-moment method, Fourier series expansion, monopole antenna, 
 Summary | Full Text:PDF(441.4KB)
Analysis and Design of a Two-Loop Controlled Switching Power Amplifier
Hisahito ENDO Takashi YAMASHITA Toshiyuki SUGIURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/09/25
Vol. E76-B  No. 9 ; pp. 1193-1201
Type of Manuscript:  PAPER
Category: Power Supply
Keyword: 
switching power amplifier, portable telephone, switching regulator, two-loop control, small-signal transfer functions, 
 Summary | Full Text:PDF(555.3KB)