Kamarudin, Muhammad Ramlee (2010) Polarization diversity monopole antenna. In: 28th Progress in Electromagnetics Research Symposium (PIERS 2010), 5 - 8 July 2010, Cambridge, Massachusetts dan Pennsylvania State University, USA.
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The increasing number of user in ISM 2.4 GHz band has caused the spectrum to be crowded. The emerging technology of cognitive radio has paved the way of improving the spectrum utilization. Apart from that, antenna diversity is a well-known technique to enhance the performance of wireless communication systems by reducing the fading e?ects. In order to create an antenna diversity system on a wireless device, two or more antenna elements could be placed in positions that provide uncorrelated signals of the same power level. A printed polarization diversity monopole antenna for Cognitive Radio system application to improve the spectrum utilization in the 2.4 GHz ISM band is proposed in this paper. The proposed antenna is composed of two monopoles which are orthogonal to each other. CST Microwave Studio software was used to evaluate the antenna design. This antenna was fabricated on 50 mm × 50 mm FR4 board with thickness of 1.6 mm and dielectric permittivity 4.7. The front and back view of the proposed antenna were showed in Figs. 2 and 3 respectively. The simulated and measured return losses of the antenna are shown in Figs. 3 and 4. Even though the return loss at the two ports are di?erent but the antennas have -15 dB and -12 dB return loss which were lower than -10 dB at 2.4 GHz. The radiation pattern for the antenna was di?erent with single monopole antenna since the ground plane from antenna #2 re?ected the signal radiated by antenna #1. This diversity antenna also o?ers wide bandwidth (~ 17%) and low correlation since the antenna orthogonal to each other.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||diversity monopole antenna, radio system|
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering|
|Deposited By:||Liza Porijo|
|Deposited On:||25 Sep 2012 02:57|
|Last Modified:||25 Sep 2012 02:57|
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