Design of a Compact and Low-Loss E-Band Filter Based on Multilayer Groove Gap Waveguide

Xiu, Tao; Yao, Yuan; Jiang, Hang; Cheng, Xiaohe; Wang, Caixia; Wang, Bin; Yu, Junsheng; Chen, Xiao

doi:10.1109/lmwc.2021.3111955

Cited by 15 publications

(6 citation statements)

References 18 publications

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“…Alternately, the miniaturization of the GGW filter can also be achieved by filter employing horizontally polarised GGW [116]. In addition, multi-layer GGW-based filters may be implemented utilizing the direct coupled approach to reduce the size of the filters [117], [118]. In addition, a GW-based bandpass frequency selective surface filtering radome has been demonstrated in [119].…”

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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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

View full text Add to dashboard Cite

show abstract

“…Although the designs above have achieved low insertion loss, the chip sizes are usually too large to be integrated into RF front-end circuits. Like the BPF based on the waveguide, 5,6 low insertion loss can be achieved through large size in low frequency band, or miniaturization can be achieved in millimeter wave band. For LTCC technology, 7,8 because the low cost needs to be achieved through multiple layers, the size of the chip is also a thorny issue.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized IPD band pass filter with low insertion loss based on modified T‐section for 5G applications

Zhang,

Cao,

Wang

2024

Int J Numerical Modelling

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A miniaturized bandpass filter (BPF) with low insertion loss based on a modified T‐section and a grounded transmission‐zero resonator is proposed. The novel T‐section consists of two resonators, which can achieve the bandpass performance with two transmission zeros (TZs) in the upper band. The grounded transmission‐zero resonator can generate an extra transmission zero in the lower band. Therefore, high frequency selectivity can be achieved by the above three transmission zeros near the passband. The proposed BPF can achieve an insertion loss of 0.8 dB and a return loss of 22 dB covering 3.3–4.2 GHz, and the upper‐stopband attenuation is better than 20 dB up to 12.5 GHz (3.3f0). The proposed BPF with a miniaturized size of 1.2 mm × 0.5 mm × 0.3 mm have been fabricated using Si‐based integrated passive devices (IPDs) technology and measured by on‐wafer probing. The simulated and measured results of the proposed BPF are in reasonably good agreement.

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“…In Ref. [11], a GGW bandpass filter with two TZs is realised by using a cross‐coupled quadruplet topology. However, all of them only use single‐mode resonators to achieve the required filtering response, which results in their structures being larger than those using multi‐mode resonators.…”

Section: Introductionmentioning

confidence: 99%

“…Since the Q-factor of the groove gap waveguide (GGW) cavity is higher than other types of GW, which allows it to operate at higher frequencies. Some millimeter GGW filters working in a single band have been reported [8][9][10][11]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Dual‐band bandpass filter with high selectivity based on 3D printable groove gap waveguide

Yao,

Huang,

Zhang

et al. 2023

IET Microwaves Antenna & Prop

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A compact dual‐band bandpass filter (BPF) with high selectivity based on 3D printable groove gap waveguide (GGW) for millimeter application is proposed by the authors. Two stacked dual‐mode GGW resonant cavities including TE102 and TE201 are used to realise a compact structure. The dual‐band bandpass response of the GGW BPF is developed from a split‐type coupling topology which produced two transmission zeros (TZs) between the two passbands. In addition, two TZs are generated outside the two passbands after introducing a source‐load coupling, which achieves a higher frequency selectivity. For verification, a prototype is designed, fabricated and measured. The measured results agree well with the simulated ones, which validates the proposal.

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Design of a Compact and Low-Loss E-Band Filter Based on Multilayer Groove Gap Waveguide

Cited by 15 publications

References 18 publications

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

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

Miniaturized IPD band pass filter with low insertion loss based on modified T‐section for 5G applications

Dual‐band bandpass filter with high selectivity based on 3D printable groove gap waveguide

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