NDLI: Compact WLAN dual-band filter using independent band stop resonators combined with diplexer

Content Provider	IEEE Xplore Digital Library
Author	Park, J.H. Cheon, S.J. Park, J.Y. Lim, J.T.
Copyright Year	2011
Description	Author affiliation: Micro/Nano Devices & Packaging Laboratory, Kwangwoon Univ., Seoul, 139-701, Korea (Park, J.H.; Cheon, S.J.; Park, J.Y.) \|\| SGR Tech., Gunpo-si, Kyeonggi-do, 435-831, Korea (Lim, J.T.)
Abstract	In this paper, a highly miniaturized dual-band band pass filter has firstly been developed by embedding all the passive lumped elements into a LTCC substrate for 2.4–2.5 GHz (802.11b) and 5.15–5.85 GHz (802.11a/g) WLAN applications. In order to reduce a size/volume of the filter and improve its performances, the proposed filter was newly designed by using J-inverter transformation technology, independent transmission zero technology and independent band-stop resonators. The J-inverter transformation technology was highly effective to minimize electromagnetic parasitic coupling between the large inductors. The newly applied independent band-stop resonator helped to reduce the number of passive elements in the filter circuit. Finally, designed dual-band filter was combined with simple LC diplexer. The measured maximum insertion losses of the fabricated dual-band WLAN filter were better than 2.3 and 1.3 dB in the lower and upper pass-bands, respectively. Return loss was higher than 15 dB. The overall size/volume of the fabricated filter module was 4.7 × 2.3 × 0.68 $mm^{3}$
Starting Page	1
Ending Page	2
File Size	765831
Page Count	2
File Format	PDF
ISBN	9781457709616
e-ISBN	9781457709630
DOI	10.1109/IMWS2.2011.6027209
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-24
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless LAN Embedded passive elements Resonator filters Dual-band bandpass filter Dual band Resonant frequency Band pass filters Filtering theory LTCC Microwave filters Diplexer
Content Type	Text
Resource Type	Article

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