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Báo cáo nghiên cứu khoa học: "National Institute of Information and Communications "

Bài viết này tập trung vào nghiên cứu, thiết kế và sản xuất kép - ban nhạc và cao - ăng-ten băng thông áp dụng cho thiết bị cầm tay di động trước. | VNU Journal of Science Natural Sciences and Technology 27 2011 59-63 Study Design and Manufacture Microstrip Antenna For Advance Mobile Handsets Tran Minh Tuan National Institute of Information and Communications Strategy 115 Tran Duy Hung Hanoi Vietnam Received 19 March 2010 Abstract. This paper concentrates on studying designing and manufacturing a dual - band and high - bandwidth antenna applied for advance mobile handsets. This antenna can work in GSM UMTS bands by generating two resonant modes of 900 MHz and 1900 MHz frequencies. Antenna is printed on FR4 substrate with size of 58 mm x 80 mm thickness of 1.6 mm and relative permittivity of 4.4. The propose antenna is experimentally studied. Keywords Antenna dual-band monopole microstrip antenna. 1. Introduction Nowadays 3G mobile terminals are gaining immense popularity thank to their advanced and user-friendly features. Therefore designing new compact antennas with good characteristics easy to manufacture and low cost applied for advance mobile terminals is quite necessary although number of similar studies had been conducted so far 1-4 . In this paper this antenna is chosen because it has advantages by its characteristics such as easier to design and manufacture than the PIFA antennas. Thank to simple structure and omnidirectional radiation monopole antennas have been found widespread applications in mobile communication systems. To meet the miniaturization of modern mobile communication equipments the design of compact monopole antennas is of particularly importance. In this paper a simple way has been proposed where a meandering conductor line printed on a dielectric substrate is used to reduce the size of a monopole antenna. But the resulted antenna was mainly applicable for single-band operation. To achieve dual-band operation in a compact monopole antenna design we propose a novel design of monopole antenna by extending conductor lines from rectangular meander monopole. The proposed antenna is fed by a