Abstract
This paper presents a sector antenna for base station of mobile phone using microstrip antenna (MSA) array with curved woodpile Electromagnetic Band Gap (EBG). The advantages of this pro- posed antenna are easy fabrication and installation, high gain, and light weight. Moreover, it pro- vides a fan-shaped radiation pattern , a main beam having a narrow beam width in the vertical di- rection and a wider beamwidth in the horizontal direction, which are appropriate for mobile phone base station. The half-power beamwidths in the H-plane and E-plane are 37.4 and 8.7 de- grees, respectively. The paper also presents the design procedures of a 1 × 8 array antenna using MSAs associated with U-shaped reflector for decreasing their back and side lobes. A Computer Si- mulation Technology (CST) software has been used to compute the reflection coefficient (S11), radiation patterns, and gain of this antenna. The bandwidth, at S11 (?10 dB), is enough, which can be well utilized for 3G base station, with a gain 20.84 dB.
Highlights
The development of antennas with new performances becomes currently imperatively essential for the new services and network of telecommunication
From such advantages of Electromagnetic Band Gap (EBG) structures, this paper presents a 1 × 8 array antenna using Microstrip antennas (MSA) covered with curved woodpile EBG structures providing the high gain and beam width suitable for mobile phone base station
The circular MSA [16] designed for working in the Universal Mobile Telecommunications System (UMTS) band of 2.1 GHz frequency is utilized be the prototype for this proposed antenna
Summary
The development of antennas with new performances becomes currently imperatively essential for the new services and network of telecommunication. EBG structures are capable to enhance the performance of MSA in terms of gain, side lobe, back lobe level and mutual coupling This is due to EBG exhibits frequency bandpass and band-stop that can block the surface wave excitation in the operational frequency range of antennas [14]. The objectives in using EBG were basically either to increase the gain, to reduce the side lobe and back lobe level, to reduce the mutual coupling (S21) or to produce dual band to operate at different frequencies [15] From such advantages of EBG structures, this paper presents a 1 × 8 array antenna using MSAs covered with curved woodpile EBG structures providing the high gain and beam width suitable for mobile phone base station.
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