High Selective Dual -band Bandpass Filter Design with Novel Feed Scheme
نویسندگان
چکیده
In this paper, we propose a novel approach for designing planar dual-band bandpass filter on a novel feed scheme. While we design this filter, the novel feed scheme is used to generate two passbands at 1.8 GHz and 2.4 GHz for global system for mobile communications (GSM) and wireless local area network (WLAN). Novel feeding structures are introduced to simultaneously feed the resonators and conveniently control the zero-degree feed structure. A novel scheme is introduced to feed one set of resonators to not only generate the lower passband but also feed another set of resonators. For enhancing the selectivity, this scheme use zero-degree feed structure to generate three transmission zeros at 1.5GHz, 2.1 GHz and 2.47 GHz.
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