High-Selective Bandpass Filters Based on New Dual-Mode Rectangular Strip Patch Resonators

Liu, Qing; Zhou, Donghua; Wang, Xian; Tang, Min; Zhang, Dewei; Zhang, Yi

doi:10.1109/lmwc.2021.3106128

Cited by 14 publications

(3 citation statements)

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“…According to the aforementioned literatures, apart from designing dual‐mode resonators through cascaded single‐mode resonators [15], most of microstrip dual‐mode patch filters can be designed and achieved by square, triangular, loop, circular, tapered and fan‐shape resonators, which support a pair of degenerate modes [1, 17]. In order to split and couple two degenerate modes, an extra perturbation element must be introduced along the orthogonal plane of a resonator in a symmetrical structure [13].…”

Section: Introductionmentioning

confidence: 99%

“…Microstrip patch bandpass filters (BPFs) have been widely used in modern radio frequency and microwave systems for their merits of low cost, easy fabrication and high-power capacity [1,2]. In particular, microstrip dual-mode patch filters can reduce the numbers of resonant cavities to result in a compact filter configuration while retaining good filtering responses.…”

Section: Introductionmentioning

confidence: 99%

“…A miniaturised dual-mode sector patch BPF using a single via-hole as perturbation structure is presented in ref. [16].According to the aforementioned literatures, apart from designing dual-mode resonators through cascaded single-mode resonators [15], most of microstrip dual-mode patch filters can be designed and achieved by square, triangular, loop, circular, tapered and fan-shape resonators, which support a pair of degenerate modes [1,17]. In order to split and couple two degenerate modes, an extra perturbation element must be introduced along the orthogonal plane of a resonator in aThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.…”

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confidence: 99%

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Highly‐selective microstrip bandpass filters based on new dual‐mode fan‐shape patch resonators

Fan

Гонг

Liu

et al. 2023

IET Microwaves Antenna & Prop

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A design method for highly‐selective bandpass filters based on novel dual‐mode fan‐shaped patch resonator (FSPR) is presented in this article. Different from traditional dual‐mode patch filters, two higher‐order modes TM020 and TM110 are utilised to generate a passband, and the two resonant frequencies can be controlled well by its radius and angle. A dual‐mode filter with two transmission zeros (TZs) is implemented by using one FSPR, and locations of TZs can be controlled well. To further improve the selectivity of FSPR filters, four‐pole filters based on two identical dual‐mode FSPRs with co‐directional and reverse‐directional cascade are simulated, fabricated and measured. Furthermore, three‐ and four‐pole filters based on dual‐mode FSPR and single‐mode uniform impedance resonators are proposed, which are also simulated, fabricated, and measured. The later proposed filters not only achieve high selectivity and wide stopband, but also have simple structure and small size.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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