DocumentCode :
3238626
Title :
A novel compact dual-wideband bandpass filter
Author :
Cai, L.Y. ; Zeng, G. ; Zhan, X.W.
Author_Institution :
Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
fYear :
2010
fDate :
8-11 May 2010
Firstpage :
56
Lastpage :
58
Abstract :
In this paper, a new novel compact dual-band bandpass filter is proposed. The module consists of two square defected structure in the ground and a dual-line coupling structure are used for coupling enhancement, the transmission zeros are then introduced to avoid being interfered by the WLAN radio signals by properly via holes. The proposed component is fabricated in a planar microstrip configuration and simulated by CST 2009. The dimensions of the module can be controlled within 20 mm × 19 mm, its two passbands can be arbitrarily positioned, which exhibits 40% 3-dB fractional bandwidth centred at 4.04 GHz and 34% 3-dB fractional bandwidth centred at 7.81 GHz, low insertion loss (0.1 dB at 4.01 GHz), a low group delay is less than 0.4 ns, and good stopband characteristics (|S21|<;- 55 dB at 2.2GHz, |S21|<;- 38.8 dB at 5.75GHz). We can see that it is the dual-band ultra-wideband(UWB) filter, which shows good frequency response. The proposed filter can be used in modern wireless communication systems.
Keywords :
band-pass filters; microstrip lines; ultra wideband communication; CST 2009; bandwidth 4.04 GHz; bandwidth 7.81 GHz; compact dual-wideband filter; dual-band UWB filter; dual-band bandpass filter; dual-line coupling structure; frequency 2.2 GHz; frequency 4.01 GHz; planar microstrip configuration; square defected structure; transmission zeros; Band pass filters; Bandwidth; Couplings; Delay; Dual band; Filtering theory; Insertion loss; Microstrip components; Passband; Wireless LAN; Bandpass filter; Compact; Dual-wideband; low insertion loss; ultra-wideband (UWB) filter;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2010 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-5705-2
Type :
conf
DOI :
10.1109/ICMMT.2010.5525291
Filename :
5525291
Link To Document :
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