Tuesday 21 September 2010

Wseas Transactions

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Transactions: INTERNATIONAL JOURNAL of BIOLOGY and BIOMEDICAL ENGINEERING
Transactions ID Number: 19-447
Full Name: Cheng Hung Lin
Position: Ph.D. Candidate
Age: ON
Sex: Male
Address: 2F.-1, No.29, Ln. 23, Hami St., Datong Dist., Taipei City 103
Country: TAIWAN
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E-mail address: joseph_lin@htc.com
Other E-mails: imjoseph1027@hotmail.com
Title of the Paper: A Compact Internal Planar Antenna with a Capacitive Tuner for 3G and 4G Mobile Phone Application
Authors as they appear in the Paper: Cheng Hung Lin , Kwong Kau Tiong , Jwo Shiun Sun , YD Chen and Guan Yu Chen
Email addresses of all the authors: imjoseph1027@hotmail.com
Number of paper pages: 9
Abstract: There have been many antenna designs studied and developed in 3G mobile phone application. Multiband operation has become a basic requirement for internal antennas to be used in the mobile phone for wireless communication system. These papers are evaluated the multiband antenna operation for the application in 3G wireless communication systems. In recent years, a 4G system is in development and expected to supply the better quality of data throughput operation. In this paper, a high performance planar antenna with a capacitive tuner as the primary radiator for 4G operation is presented. A prototype of the proposed planar antenna with a compact area size of 60mmx13mmx8mm is implemented, and the antenna shows a wide operating bandwidth of about 350MHz and 550MHz for low band and high band respectively, making it easy to cover the LTE700, CDMA850/1900, GSM850/900/1800/1900, and UMTS2100 bands for wireless communication for the 3G/4G systems in a mobile phone applicat!
ion. The multipath fading is a critical task in the wireless communication systems. In order to solve the problem; we consider the diversity technique in the system. Therefore, a secondary antenna design with the receiver function used in the wireless communication systems is studied. The compact size of the secondary antenna is 60mmx7mmx8mm, and the antenna can generate three resonant modes to cover the CDMA850, CDMA1900, and UMTS2100 MHz for the system applications. The secondary antenna shows the bandwidth of about 210MHz and 360MHz for low band and high band bandwidth respectively. The study mainly focuses on the current trends in development of compact and low profile multi-media PDA and Smartphone, and provides planar antennas design suitable for application in 3G/4G wireless communicating systems. The proposed antennas are easily fabricated by the flexible planar antenna at low cost and embedded into the mobile phone. A 50 ohms microstrip line is used to excite th!
e planar antenna. The performed data including return loss, antenna ga
in, current distribution and radiation patterns are presented. The SAR results of the proposed antenna are also analyzed in phantom head and body modes. The antenna design can have the high efficiency and low SAR value. All of the performances tell that the proposed antenna is proper to applied in the wireless communication system.
Keywords: Capacitive coupling strip, Diversity technique, Internal mobile phone antenna, Wireless communication system
EXTENSION of the file: .doc
Special (Invited) Session: A Compact Internal Planar Antenna with a Capacitive Tuner for 3G and 4G Mobile Phone Application
Organizer of the Session: 647-207
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