A compact microstrip two-layers bandpass filter using improved interdigital-loop resonators

Boonlom, Kamol; Pratumvinit, Teerapan; Akkaraekthalin, Prayoot

doi:10.1109/rfit.2009.5383685

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…This resonator obtains a peak in the magnitude of the S21 value of −0.83 dB at its resonant frequency f 0 = 5 GHz. This result is comparable to other multilayer resonators [ 40 , 41 ] with the advantage of low insertion loss, small size, and flexibility.…”

Section: Resonatorssupporting

confidence: 71%

Characterization of Multilayer Coupling Based on Square Complementary Split Ring Resonator for Multiport Device Implementation

2022

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The advent of context-aware environments and related applications demands a high degree of connectivity, with new spectral bands and related radio resource management functionalities in the current 5G bands and foreseen in future 6G wireless communication systems. This, in turn, poses new challenges in the implementation of wireless transceivers and radiating systems, in terms of device integration, miniaturization and element isolation, among others. High-performance miniature devices are presented and studied in this work, aided by metamaterial-inspired complementary resonators. A single particle is used to build a single layer, double layer, double frequency resonators and power dividers. A complete characterization of each equivalent circuit is also analyzed, showing great agreement between analytical circuit models and full-wave electromagnetic simulations. By adding more particles, different diplexers and triplexers in the multi-layer configuration are proposed. The flexibility in the design is the key advantage, as all devices are easily tunable and the output lines can be built in different layers, enabling frequency scalability from RF to millimeter wave ranges. Nevertheless, they are only a sample of all possible combinations of devices that can be designed for integration in future wireless communication systems.

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Section: Resonatorssupporting

confidence: 71%

Characterization of Multilayer Coupling Based on Square Complementary Split Ring Resonator for Multiport Device Implementation

2022

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“…Therefore, noticeable effort is still dedicated to the ways of filter miniaturization, and several main approaches can be identified. In planar structures, great attention is attracted to steppedimpedance resonators (SIRs) [1][2][3][4][5] and spiral resonators [6,7]; also, during the last years, more attention has been directed to complex hairpin, net-type, and interdigital structures [8][9][10][11][12][13][14][15]. These resonators demand accurate technology of fabrication, but the advantages in size and electrical characteristics allow one to create bandpass filters with unique characteristics.…”

Section: Introductionmentioning

confidence: 99%

High-Quality Compact Interdigital Microstrip Resonator and Its Application to Bandpass Filter

Belyaev¹,

Сержантов²,

Bal'va³

et al. 2017

PIER C

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Abstract-A compact microstrip resonator based on the interdigital structure is proposed. The resonator has several times higher unloaded quality factor compared to similar resonators presented previously and can even reach the Q-factor of a regular λ/4 resonator. The size of the resonator can be significantly reduced with a substantial increase in quality factor by incrementing the number of fingers in the interdigital structure. In addition, for each gap between the fingers, there exist an optimal number of fingers that correspond to the maximum Q-factor. An extension of the upper stopband for a bandpass filter designed using the resonator can be achieved by the interconnection of the fingers in each of the comb structures. The simulation results are proven by fabricated resonators and a fourpole bandpass filter. For the central frequency of 2000 MHz and 16.2% fractional bandwidth, the lateral size of the filter is only 11.5 mm × 3.8 mm for alumina substrate (eps = 9.8). The filter has an upper stopband up to 5.8f 0 at the level −40 dB.

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Via-less X-band stacked filters on Duroid substrate

Lacroix

Choi

Hunt

et al. 2010

2010 Proceedings 60th Electronic Components and Technology Conference (ECTC)

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A compact microstrip two-layers bandpass filter using improved interdigital-loop resonators

Cited by 7 publications

References 5 publications

Characterization of Multilayer Coupling Based on Square Complementary Split Ring Resonator for Multiport Device Implementation

Characterization of Multilayer Coupling Based on Square Complementary Split Ring Resonator for Multiport Device Implementation

High-Quality Compact Interdigital Microstrip Resonator and Its Application to Bandpass Filter

Via-less X-band stacked filters on Duroid substrate

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