2–2.2 GHz Reconfigurable 1 × 4 Filtering Beamforming Network Using Novel Filtering Switch-Coupler and Twisted Rat-Race Coupler

Lai, Junchen; Yang, Tao; Chi, Pei‐Ling; Xu, Ruimin

doi:10.1109/tmtt.2022.3147194

Cited by 7 publications

(1 citation statement)

References 42 publications

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“…With the ever‐increasing complexity of integrated microwave circuits and systems, layout and routing may pose more problems for designers 1 . Crossover is a key module that is commonly applied in multiport systems and complex feeding networks, such as Butler matrix 2 and beamforming networks, 3 to enable the transmission of multiple individual signal paths without interference.…”

Section: Introductionmentioning

confidence: 99%

Third‐order filtering crossover using dual‐mode resonator for high‐isolated channels

Qiu,

Guo,

Zhu

et al. 2023

Int J Communication

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SummaryThis paper proposes a high‐selective crossover with a third‐order filtering characteristic, high passband isolation, and multiple controllable transmission zeros based on a coupled topology using single‐ and dual‐mode resonators. By virtue of the odd‐ and even‐mode feature of the stub‐loaded dual‐mode ring resonator, not only can the two resonant modes for different passbands be relatively independently controlled, but also better isolation can be achieved. With a single‐mode resonator and stub‐loaded dual‐mode resonant coupling topology, the resultant crossover can perform third‐order filtering performance in two distinct passbands/channels and generate several transmission zeros outside the desired bands to improve the isolation between the passbands. Experimental results demonstrate that, compared with conventional works, the filtering order of the proposed crossover is promoted and its passband isolation can be significantly improved by about 8 dB. The proposed work may facilitate its widespread applications in high‐performance multichannel integrated microwave systems for avoiding interference between multiple intersecting signal paths.

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Section: Introductionmentioning

confidence: 99%