NDLI: Miniaturized reconfigurable and switchable filter from UWB to 2.4 GHz WLAN using PIN diodes

Content Provider	IEEE Xplore Digital Library
Author	Karim, M.F. Yong-Xin Guo Chen, Z.N. Ong, L.C.
Copyright Year	2009
Description	Author affiliation: Institute for Infocomm Research, Agency for Science, Technology and Research (A*Star), 1 Fusionopolis Way, #21-01, Connexis, Singapore 138632 (Karim, M.F.; Chen, Z.N.; Ong, L.C.) \|\| Department of Electrical and Computer Engineering, National University of Singapore, Singapore (Yong-Xin Guo)
Abstract	This paper reports a new miniaturized reconfigurable and switchable filter from UWB to 2.4 GHz WLAN bands by using pin diodes. First, a reconfigurable filter is developed which changes from bandstop to bandpass filter at the same UWB spectrum. This bandstop filter consists of two bended open stubs of quarter-wavelength and a connecting stub of half-wavelength. The bandstop filter reconfigure to bandpass filter when the two open bended stubs are shorted to ground using Avago's RF pin diode. Different design parameters are evaluated for the reconfigurable filter. A switchable filter is developed by connecting half wavelength stub to the reconfigurable filter. This switchable bandpass filter changes from UWB to 2.4 GHz WLAN by turning ON the pin diodes. The measurement results of the reconfigurable filter in the bandstop state shows a rejection bandwidth of 2.2 GHz and the insertion loss in the passband of 1.9 dB and similarly the reconfigurable filter in the bandpass state shows the insertion loss of 2.1 dB and 3-dB bandwidth from 3.6 GHz to 10.5 GHz. The switchable bandpass filter at 2.4 GHz shows an insertion loss of 0.9 dB and 3 dB bandwidth of 400 MHz. The area of the filter is (λ / $4)^{2},$ while the area of the filter realized using the non bending stubs and connecting lines is 2(λ / $4)^{2}$
Starting Page	509
Ending Page	512
File Size	682915
Page Count	4
File Format	PDF
ISBN	9781424428038
ISSN	0149645X
DOI	10.1109/MWSYM.2009.5165745
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless LAN Band pass filters Joining processes Bandwidth Insertion loss Radio frequency Turning Loss measurement Wavelength measurement Passband pin diode reconfigurable filter switchable filter
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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