Esa, Mazlina and Subahir, Suhaila and Ismail, Mohd Khairul Hisham (2005) Meeting broadband access telecommunication needs: printed low-profile dual and tri-operation antennas. AIUB Journal of Science and Engineering, 4 (1). ISSN 1608 - 3679
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Future telecommunications systems demand space-limited application. Hence, the research work on antenna has grown tremendously. In addition, there is a need for a single antenna that can operate for more than one frequency. The existence of a single, rather than two antennas for transmitting and receiving, is highly desirable. Thus, the problem of limited space can be overcome. Consequently, the total manufacturing cost can be reduced. One example of a dual-operation antenna is on a moving vehicle where the user can detect his/her location while simultaneously communicating with another user. The relevant frequencies could be Global Positioning System (GPS) of 1.575 GHz and Global System for Mobile (GSM) 1.8 GHz. The tri-operation antenna is needed for access Wireless Local Area Network (WLAN) of 2.45 GHz and two GPS frequencies of 1.227 G1-Iz and 1.575 GHz. This paper presents two designs of such single dual operation (RPRem) and tri-operation (Rsn) antennas having printed low profile configurations. The MathCAD software has been used for computing and correlating the relevant design formulations. A simple expression for each design has also been successfully developed. The basis of the designs is the basic rectangular patch. The RPRem antenna is a rectangular patch of size 48 mm by 35 mm perturbed with embedded two L-section structures. The optimum feed location was determined to be 14.5 mm from the antenna edge. The measured antenna operates well near the designed frequency of operations. The Rsn antenna is a multilayer rectangular patch having three equal-size radiating elements; each operates at a different frequency within the specified bands. The feed line is located at the non-radiating edge. The three layers of the antenna have identical radiating sizes of 48 mm by 37 mm. The measured antennas exhibit well-matched frequencies of operations that correspond to the simulated antennas and theory.
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering|
|Deposited By:||Liza Porijo|
|Deposited On:||29 Jul 2011 01:33|
|Last Modified:||29 Jul 2011 01:33|
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