Design of a Compact Dual-Band Bandpass Filter Using Opposite Hook-Shaped Resonator

Author

Zhang, Zheng ; Jiao, Yong-Chang ; Wang, Xiao-Ming ; Cao, Shun-Feng

Author_Institution

Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´´an, China

Volume

21

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

359

Lastpage

361

Abstract

In this letter, a compact dual-band bandpass filter is presented for wireless area networks (WLAN) operations. The filter, which is only 0.04 λ₀ × 0.09λ₀ in overall dimensions, is composed of two symmetric parts. In each part, two opposite hook-shaped strips with different resonant paths are used to achieve the dual-band operation at 2.4 and 5.8 GHz, with 19.54% and 15.12% fractional bandwidth, respectively. The central frequencies of the two passbands can be controlled independently by adjusting dimensions of the hooks. To verify the proposed idea, a prototype is implemented, and the measurement results agree well with the full-wave electromagnetic simulated responses.

Keywords

band-pass filters; microwave filters; resonator filters; wireless LAN; WLAN operations; compact dual-band bandpass filter; frequency 2.4 GHz; frequency 5.8 GHz; full-wave electromagnetic simulated responses; opposite hook-shaped resonator; wireless local area networks; Dual band; Equivalent circuits; Feeds; Integrated circuit modeling; Passband; Strips; Wireless communication; Filter; dual-band; hook-shaped resonator;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2011.2156777

Filename

5871701