Dual-Mode Dual-Band DR Balun Filter Using Suspended Stripline Feeding Structure

This letter presents a novel dual-band balun filter based on dielectric resonators (DRs) fed by a suspended stripline (SSL) structure. By using the SSL feeding structure and the coupling slots, both the external couplings and the internal couplings of the two modes could be independently controlled...

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Veröffentlicht in:IEEE microwave and wireless components letters 2022-06, Vol.32 (6), p.503-506
Hauptverfasser: Li, Yuan Chun, Li, Lin Wei, Wu, Di-Si, Fang, Xin, Xue, Quan
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Li, Lin Wei
Wu, Di-Si
Fang, Xin
Xue, Quan
description This letter presents a novel dual-band balun filter based on dielectric resonators (DRs) fed by a suspended stripline (SSL) structure. By using the SSL feeding structure and the coupling slots, both the external couplings and the internal couplings of the two modes could be independently controlled at the same time. Thus, the bandwidths of two passbands are flexibly controlled. The principle of differential outputs is also analyzed. For demonstration, the dual-band balun filter centered at 3.93 and 4.14 GHz is fabricated and measured. From the measured results, low insertion loss, good amplitude, and phase imbalances are realized by the proposed balun filter.
doi_str_mv 10.1109/LMWC.2022.3142906
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ispartof IEEE microwave and wireless components letters, 2022-06, Vol.32 (6), p.503-506
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language eng
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subjects Balun filters
Baluns
Bandwidth
Couplings
dielectric resonators (DRs)
Dual band
independent control
Insertion loss
Landline
Passband
Resonators
suspended stripline (SSL) structure
title Dual-Mode Dual-Band DR Balun Filter Using Suspended Stripline Feeding Structure
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