Integrated substrate groove gap waveguide and application for filter design

Chen, Jianpei; Shen, Dongya; Zhang, Xiupu; Sa, Yuchao

doi:10.1002/mmce.22830

Cited by 8 publications

(3 citation statements)

References 33 publications

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“…Compared with Reference [18], the filter has lower radiation, lower insertion loss and steeper suppression. Compared with Reference [19], the filter has steeper suppression, more TZs and wider bandwidth.…”

Section: Methodsmentioning

confidence: 96%

A sixth‐order SIW bandpass filter based on combining single‐ and dual‐mode cavities with high selectivity at Ka‐band

Zhang

Zhu

Yang

et al. 2022

Int J RF Mic Comp-Aid Eng

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In this paper, a novel substrate integrated waveguide quasi‐elliptic bandpass filter is proposed by combining single‐ and dual‐mode cavities. Two single‐mode cavities with TE101 mode are directly coupled to the dual‐mode resonance cavity which employs a pair of disturbing metallic via‐holes to make the resonant points of TE101 and TE102 mode in one passband. Based on the conventional box‐like topology, two additional single cavities are used to achieve wider bandwidth and simplify the design difficulty. In addition to two transmission zeros (TZs) realized by the cross‐coupling technology, nonreasoning node will generate an additional TZ at a higher frequency to improve the upper stopband performance. Finally, a sixth‐order filter, having the passband frequency of 24.25–27.5 GHz for 5G application, with three TZs, is simulated, fabricated and measured to demonstrate and verify the proposed structure. The test results show the insertion loss is 1.7 and 3 dB bandwidth is 3.37 GHz. The three TZs improve out of band rejection of the filter.

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Section: Methodsmentioning

confidence: 96%

A sixth‐order SIW bandpass filter based on combining single‐ and dual‐mode cavities with high selectivity at Ka‐band

Zhang

Zhu

Yang

et al. 2022

Int J RF Mic Comp-Aid Eng

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show abstract

“…However, the end-coupled mechanism is used in the filter design instead of the parallel-coupled design. Moreover, numerous filters have been developed employing SIGW [105]- [108]. However, these IMGW and SIGW filters often have higher insertion loss due to the presence of the dielectric substrate.…”

Section: B Filters and Diplexersmentioning

confidence: 99%

An Overview of Recent Development of the Gap-Waveguide Technology for mmWave and sub-THz Applications

Yong¹,

Bagheri²,

Ven³

et al. 2023

Preprint

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<p>Interest in the mmWave and sub-THz bands for next-generation communication and radar systems is increasingly growing due to the available electromagnetic spectrum. This has led to an urgent need to develop low-loss and low-fabrication-cost technologies that perform well at these frequencies. The Gap Waveguide (GW) technology is an emerging and viable contender for the development of radio frequency passive components and antenna systems. The GW technology is based on the parallel-plate waveguide principle. According to Maxwell's equations, ideally, no wave propagates within a structure if the top plate consists of a perfect electric conductor (PEC) while the bottom plate is a perfect magnetic conductor (PMC), and the distance between the plates is less than a quarter wavelength. This PMC structure creates high surface impedance characteristics which provide cutoff to all propagating modes within the airgap. In practice, these magnetic conductors can be created artificially using an Electromagnetic Band Gap (EBG) structure. Based on this simple principle, considerable research and development of novel components with high performance has seen the light in the past decade. The purpose of this paper is to present an overview of current advancements in the design and technical implementations of GW-based antenna systems and components. Practical applications and the industry interest in the developments of the GW technology for mmWave and sub-THz applications have also been scrutinized.</p>

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“…Since it has the advantages mentioned above, many researchers have focused on its applications in recent years, such as antenna arrays [8,9], power dividers [10,11], diplexers [12,13], and filters [14]. To connect the above modules or measure the performance of those devices, a transition between RGW and other conventional guiding structures, such as commercial coaxial connector or WR-28 waveguide, must be designed [15].…”

Section: Introductionmentioning

confidence: 99%

A Compact Horizontal Coaxial to Ridge Gap Waveguide Transition for Ka-Band

Tao,

Zheng,

Jin

2023

International Journal of RF and Microwave Computer-Aided Engine

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This paper presents a novel type of compact inline coaxial to ridge gap waveguide (RGW) transition, which covers the whole Ka frequency band. The structure connects with the connector's inner conductor through a rectangular probe directly. The probe is set in nail bed without any extra parts. Hence, a simple and compact transition comes to fruition at the circuit topology level. This transition can be considered as an inhomogeneous stripline, so the characteristic impedance can be analyzed similarly to the stripline. Beyond this, a mounting hole is drilled at rectangular probe to improve the robustness and convenience of assembly without welding or conductive adhesive bonding. To verify the performance of the proposed structure, a back-to-back transition is designed, fabricated, and measured. Measurement results achieve better than 20 dB return loss and about 0.15 dB insertion loss from 26.4 GHz to 40.4 GHz. It corresponds greatly with simulation results and bespeaks valuable in millimeter-wave applications.

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Integrated substrate groove gap waveguide and application for filter design

Cited by 8 publications

References 33 publications

A sixth‐order SIW bandpass filter based on combining single‐ and dual‐mode cavities with high selectivity at Ka‐band

A sixth‐order SIW bandpass filter based on combining single‐ and dual‐mode cavities with high selectivity at Ka‐band

An Overview of Recent Development of the Gap-Waveguide Technology for mmWave and sub-THz Applications

A Compact Horizontal Coaxial to Ridge Gap Waveguide Transition for Ka-Band

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