Summary
International Symposium on Antennas and Propagation
2010
Session Number:4FD2
Session:
Number:4FD2-1
Characteristics of Dual-band Microstrip Filter with Modified E-shape Resonator
Nattaset Mhudtongon, Kittisak Phaebua, Chuwong Phongcharoenpanich,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
The increasing demand of wireless communication application necessitates RF transceivers operating in multiple separated frequency bands such that user can access various services with a single multimode handset or terminal. For example, high-speed wireless LANs, offering user up to 54 Mbit/s wireless access service, operating at 2.4 and 5.2 GHz bands. [1-6]. The demand of multiple separate frequency bands for filter become more and more importance in the wireless communication system. Low cost and easy integration are the key issues for microwave circuit technologies. In the wireless communication system, filter with small size, low cost, easy fabrication, high performance, and multi-frequencies have attracted much interest. To meet these demands, attention has been focused on the dual-band microstrip filter because of the advantages of low cost, small size, and light weight. In this paper, the dual-band microstrip filter with the modified E-shape resonator at the demand frequency of WLAN communication technology is presented. The operating frequencies are designed at 2.4 and 5.2 GHz. The key parameters to operate for single frequency band requirement are obtained in section II. In section III, the microstrip E-shape resonator is modified to yield a dual band performance by adding rectangular microstrip on the modified E-shape microstrip structure. The principle is verified by simulation and measurement. In section IV, conclusion of the proposed filter is drawn.