A Novel Dielectric Strip Resonator Filter

Zhu, Yan-Yuan; Li, Yun-Li; Chen, Jianxin

doi:10.1109/lmwc.2018.2840962

Cited by 18 publications

(18 citation statements)

References 11 publications

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“…The obtained Q U value is greater than values typically reported for microstrip technology (Q U < 150) and even SIW technology (Q U < 640) [2], [3]. In terms of Q U , the performance of this filter is also better than the filter based on dielectric resonators proposed in [14], where a Q U = 880 was reported.…”

Section: Prototype Manufacturing and Measurementscontrasting

confidence: 51%

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Wideband Bandpass Filters Using a Novel Thick Metallization Technology

Gómez-Molina

Pons-Abenza

et al. 2020

IEEE Access

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A new class of wideband bandpass filters based on using thick metallic bars as microwave resonators, instead of common microstrip lines, is presented. These bars provide a series of advantages over fully planar printed technologies, including higher coupling levels between resonators, better unloaded quality factors Q U , and larger bandwidths, implemented with more compact structures. Moreover, thick bar resonators can easily be coupled to an additional resonance excited in a box used for shielding, allowing to realize transversal topologies able to implement transmission zeros at desired frequencies. To illustrate the capabilities of this technology, two microwave filters with different bandwidths and one transmission zero have been designed. One of the filters has been manufactured and tested using copper bars inside an aluminum housing partially filled with Teflon. Measured data demonstrates a fractional bandwidth about FBW = 32%, spurious free range SFR > 50%, unloaded quality factor of Q U = 1180 and return losses over 20 dB without requiring any post-tuning on the prototype, confirming the exciting performance of the proposed technology.Index Terms-Hybrid waveguide microstrip technology, microwave filters, resonator filters, transmission zeros, transversal filters, wideband filters.

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Section: Prototype Manufacturing and Measurementscontrasting

confidence: 51%

“…However, in that work a standard tapped feeding line was employed to implement the I/O couplings. Due to this arrangement, rather low values could be implemented [14], resulting into a fractional bandwidth of only FBW = 3.3%.…”

Section: Introductionmentioning

confidence: 99%

Wideband Bandpass Filters Using a Novel Thick Metallization Technology

Gómez-Molina

Pons-Abenza

et al. 2020

IEEE Access

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“…As compared with the ESIW design in [11], the proposed design has a smaller size. Meanwhile, the proposed PCB-based DR filter shows a low profile, as compared with the dielectric-strip design in [12]. The loss enlargement in this work is attributed to the narrower FBW.…”

Section: Filter Design and Resultsmentioning

confidence: 82%

“…However, the ESIW structure shows a relatively large size. Recently, the authors' group has proposed a dielectric-strip resonator [12] and a new low-profile dual-mode dielectric patch resonator [13], however, the assembly of these filters is troubling, e.g. alignment of the employed resonators during the process of gluing them with the bottom substrate.…”

Section: Introductionmentioning

confidence: 99%

A multilayer substrate integrated filter using dual dielectric modes

Yuan

Zhou

Chen

2019

Int. J. Microw. Wireless Technol.

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In this paper, a novel multilayer substrate integrated dual-mode dielectric resonator (DR) filter is proposed. The square dual-mode DR is made of the high permittivity substrate by removing the undesired portions and the surface coppers so that the relatively high unloaded quality factor of the dominate TM11 pair can be obtained which compared to these fully dielectric-filled substrate integrated waveguides. Meanwhile, it can be easily integrated in an equivalent cavity implemented by multilayer printed circuit boards for filter design, showcasing low in-band loss, light weight, and compact size. For demonstration, a multilayer substrate integrated DR bandpass filter centered at X-band is designed and measured. Good agreement between the simulated and measured results can be observed, and the measured insertion loss at the passband center frequency (8.38 GHz) is 1.1 dB.

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“…However, the improvement of Q u is limited due to the existing of both the dielectric and conductor losses. To address this problem, a half-guided-wavelength (1/2λ) dielectric-strip resonator (DSR) owning a high Q u of 880 at X-band has been introduced [5]. It results from the concept of dielectric microstrip line [6][7][8], which has been verified to be a low loss transmission line in millimetre wave and terahertz.…”

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confidence: 99%

X‐band 1/4 λ dielectric‐strip resonator filter

2018

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A novel quarter-guided-wavelength (1/4λ) dielectric-strip resonator (DSR) with one short-circuited end is proposed to design a compact and low-loss filter at X-band. One end of the DSR is metallised and then shorted to ground effectively to achieve a half-cut conversion from 1/2λ DSR. As a result, the resonator length is reduced by half while the unloaded quality factor (Q u) of the 1/4λ DSR only has a slight reduction as compared to the corresponding 1/2λ DSR. For demonstration, a third-order DSR bandpass filter centred at 10.45 GHz is designed, implemented and measured. Good agreement between simulated and measured results can be obtained, showcasing the advantages of compact size and low loss.

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A Novel Dielectric Strip Resonator Filter

Cited by 18 publications

References 11 publications

Wideband Bandpass Filters Using a Novel Thick Metallization Technology

Wideband Bandpass Filters Using a Novel Thick Metallization Technology

A multilayer substrate integrated filter using dual dielectric modes

X‐band 1/4 λ dielectric‐strip resonator filter

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