Dual-band Bandpass Filter Using Stubs to Controllable Passband
- Lerdwanittip, Reungyot
- Namsang, Apirada
- Jantree, Phakkawat
Publication date
December 2016
DOI Publisher
The Author(s). Published by Elsevier B.V. ISSN
1877-0509Abstract
AbstractThe dual band bandpass filter is presented with square ring-resonator structure. The stubs are inserted between the inside and outside ring-resonator for adjusting the second band. The first band is designed for supporting WLAN system at 2.45GHz and the second band is covered within the radio altimeter system at 4.30GHz. The measured results are agreed to the insertion losses are 2.01dB, 2.18dB and the return loss are 11.45dB, 11.15dB at the center frequency 2.45GHz and 4.30GHz, respectively
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