Antenna Design for Wimax/Wifi Applications

 

 

 

M. Moulay(1)

(1) Telecommunications Laboratory, Faculty of Technology

Abou-Bekr Belkaïd University, Tlemcen, 13000, AlgeriaCette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.';document.getElementById('cloakb524a706ea0f9712aa4a294df934104c').innerHTML += ''+addy_textb524a706ea0f9712aa4a294df934104c+'<\/a>';


M. Abri (1)

(1) Telecommunications Laboratory, Faculty of Technology

Abou-Bekr Belkaïd University, Tlemcen, 13000, AlgeriaCette adresse e-mail est protégée contre les robots spammeurs. Vous devez activer le JavaScript pour la visualiser.';document.getElementById('cloakbf32d9347985f2c766a720aaa0ca9bea').innerHTML += ''+addy_textbf32d9347985f2c766a720aaa0ca9bea+'<\/a>';

 

 

 

 

Abstract—This paper presents a design of a bi-band bowtie antenna. The resonance is obtained in the 3.5 GHz, and 5

GHz   bands   corresponding   to   Wi-Fi   802.11a,   802.11j,

802.11n, and WiMAX 802.16-2005 standards. To validate this last, the obtained simulation results are compared to

those    obtained    by    the    moment’s    method    (Agilent

Momentum  software).  Using  this  transmission  line approach the resonant frequency, input impedance, return loss can be determined simultaneously. The paper reports several simulation results that confirm the validity of the developed model. The obtained results are then presented and discussed.

 

KeywordsBow-tie antenna, transmission line model,

moment’s method, Wimax, Wifi.


mentioned above, the design and development of a single antenna working in wideband or more frequency bands, called multiband antenna [2], is generally not an easy task. To answer these challenges, many antennas with wideband and/or multiband performances have been published in open literatures. In the work described in this paper, a bi-band bowtie antenna for use with Wi-Fi and WiMAX applications is designed.

 

I.    INTRODUCTION

Wireless communication technology plays a crucial role in our daily lives today. Actually, it has changed our lives during the past two decades. Recently, several researchers   have   devoted   large   efforts   to   develop antennas that satisfy the demands of the wireless communication industry for improving performances, especially in term of multiband operations and miniaturization. As a matter of fact, the design and development of a single antenna working in two or more frequency bands, such as in wireless local area network (WLAN) or WiFi and worldwide interoperability for microwave access (WiMAX) is generally not an easy task.  The  IEEE  802.11  WLAN  standard allocates the license-free spectrum of 2.4 GHz (2.40-2.48 GHz), 5.2 GHz (5.15-5.35 GHz) and 5.8 GHz (5.725-5.825 GHz). WiMAX, based on the IEEE 802.16 standard [1], has been evaluated by companies for last mile connectivity, which can reach a theoretical up to 30 mile radius coverage.  The  WiMAX  forum  has  published  three licenses spectrum profiles, namely the 2.3 (2.3-2.4 GHz), 2.5 GHz (2.495-2.69 GHz) and 3.5 GHz (3.5-3.6 GHz) varying country to country. Many people expect WiMAX to  emerge as  another technology especially WiFi that may be adopted for handset devices and base station in the near future. Consequently, the research and manufacturing of both indoor and outdoor transmission equipment  and  devices  fulfilling  the  requirements  of these WiFi and WiMAX standards have increased since the idea took place in the technical and industrial community. An antenna serves as one of the critical component in any wireless communication system. As

mentioned above, the design and development of a single antenna working in wideband or more frequency bands, called multiband antenna [2], is generally not an easy task. To answer these challenges, many antennas with wideband and/or multiband performances have been published in open literatures. In the work described in this paper, a bi-band bowtie antenna for use with Wi-Fi and WiMAX applications is designed.

 

 

 

 

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