Dual-band bandpass filter with source-load coupling |
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| Authors: | Gao S. Xiao Z.-Y. Chen W.-F. |
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| Affiliation: | Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai, China; |
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| Abstract: | A compact dual-band bandpass filter is presented for wireless LAN applications. Using two centrally-loaded stepped-impedance resonators, the second passband frequency can be conveniently tuned. Two transmission zeros are generated between the two passbands because of source-loading coupling topology. Simulated results show that two central frequencies are located at desired 2.4 and 5.7 GHz with 3 dB fractional bandwidths of 18.8 and 7.1 , respectively. Comparison of measured and simulated results shows good agreement. |
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