Antenna Report
5th International Conference: Sciences of Electronic, Technologies of Information and Telecommunications March 22-26, 2009 – TUNISIA
SETIT 2009
Design of a Dual-Band Microstrip Patch Antenna for GSM/UMTS/ISM/WLAN Operations
Said GHNIMI*, Adnen RAJHI* and Ali GHARSALLAH*
*Unité de recherche Circuits et Systèmes Electroniques Haute Fréquences, Faculté des sciences de Tunis said.ghnimi@fst.rnu.tn adnen.Rajhi@esti.rnu.tn ali.gharsallah@fst.rnu.tn
Abstract: This paper describes the design of a dual-frequency antenna for GSM and UMTS/LAN/ISM system applications. A patch antenna with rectangular aperture is designed by using a thick substrate in order to increase the bandwidth. After this, we have extracted the reflection coefficient of the considered antenna excited by a probe feed and by optimizing the antenna dimensions and the aperture position. The simulation of this antenna has been made by advanced design system (ADS) in the band of frequency between 50 Hz and 3.2 GHz, leading to three resonant frequencies and showing a good impedance bandwidth performance to cover the required bandwidth of the GSM (890– 960 MHz), UMTS (1920–2170MHz) and WLAN/ISM (at 2.45GHz) bands. Key words: Microstrip patch Antenna, dual-band, GSM, UMTS, ISM and WLAN.
INTRODUCTION
In the last few years the Global System for Mobile communications (GSM) [RAM 03], the Universal Mobile Telecommunications System (UMTS) bands [HOL 01] [SUR 06] [HUB 00], and one of the ISM bands is at 2.45 GHz which is also the same band for the Wireless Local Area Network (WLAN) system and Bluetooth applications have been presented in the published papers [LIU 07] [LEE 97] [MAL 03]. In the literature, several antennas have been used in a variety of applications for which new and more restrictive requirements in the design of the antenna have been introduced. In particular, for highprecision GSM, UMTS and ISM/WLAN applications, few solutions have been proposed by [CHA 02] [TUN 02] [CIA 03].
SETIT 2009
Design of a Dual-Band Microstrip Patch Antenna for GSM/UMTS/ISM/WLAN Operations
Said GHNIMI*, Adnen RAJHI* and Ali GHARSALLAH*
*Unité de recherche Circuits et Systèmes Electroniques Haute Fréquences, Faculté des sciences de Tunis said.ghnimi@fst.rnu.tn adnen.Rajhi@esti.rnu.tn ali.gharsallah@fst.rnu.tn
Abstract: This paper describes the design of a dual-frequency antenna for GSM and UMTS/LAN/ISM system applications. A patch antenna with rectangular aperture is designed by using a thick substrate in order to increase the bandwidth. After this, we have extracted the reflection coefficient of the considered antenna excited by a probe feed and by optimizing the antenna dimensions and the aperture position. The simulation of this antenna has been made by advanced design system (ADS) in the band of frequency between 50 Hz and 3.2 GHz, leading to three resonant frequencies and showing a good impedance bandwidth performance to cover the required bandwidth of the GSM (890– 960 MHz), UMTS (1920–2170MHz) and WLAN/ISM (at 2.45GHz) bands. Key words: Microstrip patch Antenna, dual-band, GSM, UMTS, ISM and WLAN.
INTRODUCTION
In the last few years the Global System for Mobile communications (GSM) [RAM 03], the Universal Mobile Telecommunications System (UMTS) bands [HOL 01] [SUR 06] [HUB 00], and one of the ISM bands is at 2.45 GHz which is also the same band for the Wireless Local Area Network (WLAN) system and Bluetooth applications have been presented in the published papers [LIU 07] [LEE 97] [MAL 03]. In the literature, several antennas have been used in a variety of applications for which new and more restrictive requirements in the design of the antenna have been introduced. In particular, for highprecision GSM, UMTS and ISM/WLAN applications, few solutions have been proposed by [CHA 02] [TUN 02] [CIA 03].
References: [HOL 01] H. Holma and A. Toskala, “WCDMA for UMTS: Radio Access for Third Generation Mobile Communications”, John Wiley & Sons, New York, 2001.