Design of Dual-Mode Dual-Band Bandpass Filter with Independently Tunable Bandwidths and Reconfigurable Filtering Characteristics

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Tarih

2017

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Yayıncı

IEEE

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

In this paper, design of a tunable dual-mode dual-band microstrip bandpass filter is presented. The designed filter is constructed by using two nested dual-mode resonators (DMRs) having two patch capacitances located at the lateral arms of the resonators as reference elements. Varactor diodes are used instead of perturbation elements in order to excite the degenerate modes. Linear phase and quasi elliptical filtering characteristics can be independently obtained in each passband and the bandwidths can also be tuned at both filtering characteristics. For the experimental verification of the designed structure, a dual-mode dual-band microstrip bandpass filter was fabricated and measured. Center frequencies of the passbands were adjusted to 1.78 - 2.65 GHz and 1.83-2.7 GHz for linear phase and quasi elliptical filtering characteristics, respectively. Insertion losses in each passband were observed as better than 3 dB in measurements.

Açıklama

IEEE-Microwave-Theory-and-Techniques-Society International Microwave Symposium (IMS) / Session on Women in Microwaves (WIM) -- JUN 04-09, 2017 -- Honolulu, HI

Anahtar Kelimeler

Dual-mode, dual-band, tunable bandwidth, reconfigurable filtering characteristics, bandpass filter, varactor

Kaynak

2017 Ieee Mtt-S International Microwave Symposium (Ims)

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N/A

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