A Compact Half-Mode Substrate Integrated Waveguide Bandpass Filter With Wide Out-of-Band Rejection

Zhang, Qiao‐Li; Wang, Bing‐Zhong; Zhao, Deshuang; Wu, Ke

doi:10.1109/lmwc.2016.2574997

Cited by 45 publications

(17 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A simplified equivalent circuit for the main body of the designed filter is shown in Fig. 3(c) (The reader may refer to [5]). The QMSIW can be modeled as an ordinary two-wire transmission line (formed by the top surface and the bottom surface) loaded with some shortcircuited stubs (formed by via-walls).…”

Section: Quarter Rw Cavity Resonatormentioning

confidence: 99%

“…It is urgent to increase demand on wide stopband filter [3,4] with compact size, high selectivity, and good stopband performance, etc. The substrate integrated waveguide (SIW) [5,6] is an artificial waveguide structure which is a favourable technology to meet these requirements. However, SIW is still rather large for low frequency microwave components.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Compact Quarter-Mode Siw Bandpass Filter With an Extremely Wide Stopband

Yang¹,

Li²,

Wu³

et al. 2017

PIER Letters

View full text Add to dashboard Cite

Abstract-This paper presents a C-band wide stopband bandpass filter (BPF) using quarter mode substrate integrated waveguide (QMSIW) cavities. The BPF is simply constructed by combining Sshaped slot and L-shaped slot loaded quarter-mode substrate integrated waveguide. A special negative coupling scheme with symmetrical S-shaped slots on the top and bottom metal planes connected by metallic vias is developed. The proposed structure provides more design flexibility in arranging the pitch of vias owing to the extended slot length. The filter has fractional bandwidth of 25% at center frequency of 5.5 GHz with return loss better than 24 dB and insertion loss less than 1.1 dB. Moreover, its first spurious response occurs at 22.5 GHz (about four times the central frequency), exhibiting an extremely wide stopband performance. An experimental SIW filter was fabricated, and good agreement was achieved between the simulated and measured results.

show abstract

Section: Quarter Rw Cavity Resonatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Compact Quarter-Mode Siw Bandpass Filter With an Extremely Wide Stopband

Yang¹,

Li²,

Wu³

et al. 2017

PIER Letters

View full text Add to dashboard Cite

show abstract

“…However, the unload quality factors (Q u ) of SIW cavities are deteriorated by the special slot lines, which results in large in-band insertion loss (IL). The second one is using the incomplete mode SIW cavities, e.g., half-mode SIW (HMSIW) [13,14,15,16,17], quarter-mode SIW (QMSIW) [18,19,20,21,22,23], and eighth-mode SIW (EMSIW) cavities [19,22,23,24]. The sizes of them can be reduced, especially in the EMSIW cavity.…”

Section: Introductionmentioning

confidence: 99%

A quasi-elliptic response triple-mode SIW bandpass filter with controllable transmission zeros

Liu

Yang³

2019

IEICE Electron. Express

View full text Add to dashboard Cite

This letter reports a novel quasi-elliptic bandpass filter (BPF) using a new triple-mode circle-shaped substrate integrated waveguide (SIW) cavity. The triple-mode SIW cavity is achieved by a dual-mode circle-shaped SIW cavity with a floating capacitive-loaded metallic patch. The resonance of one higher-order mode is independently shifted to that of dual modes to form a three-pole passband. Three finite transmission zeros (FTZs) can be produced, and two of them can be controlled well by the angle between two feeding lines. For the demonstration, a prototype filter was designed, fabricated and measured. Good agreement between measured results and simulated results is observed. The proposed triple-mode SIW filter has the merits of compact size, high selectivity and controllable bandwidth as well as FTZs.

show abstract

“…Conventional filters can operate only at fundamental frequencies and its integral harmonics, resulting in a massive circuit size. Hence, metamaterial CRLH based filters have presented different solutions for a goal where the filter functionality can be controlled arbitrarily using the loading elements only [5,6]. By implementing and using a CRLH configuration, the ratio of the two central frequencies can be made arbitrary, and size minimization is achieved [7].…”

Section: Introductionmentioning

confidence: 99%

A Double Optimized Transmission Zeros Based on Pi-CRLH Dual-Band Bandpass Filter

Hassan¹,

Abdalla²

2019

PIER Letters

View full text Add to dashboard Cite

In this paper, design and measurements of a highly selective π-CRLH dual-band bandpass filter, with transmission zeros optimized to serve Wi-Max applications, is presented. The dual-bands are designed at 5.2 and 5.7 GHz with a sharp rejection level between them and transmission zeros before and after the passbands. The filter is designed using coupled gap zeroth order composite right/lefthanded (CRLH) resonators, which results in significant filter size reduction. Furthermore, two different coupled π-CRLH filters are discussed through the work development of this paper. The filter design concepts are verified and confirmed using electromagnetic simulations and experimental measurements. Presented results reveal that the proposed filter exhibits a rejection level greater than −20 dB, while maintaining 2 dB insertion loss and better than −25 dB for the transmission zeros with compact size (12 × 16 mm 2) which is 70% smaller than similar conventional filters.

show abstract

A Compact Half-Mode Substrate Integrated Waveguide Bandpass Filter With Wide Out-of-Band Rejection

Cited by 45 publications

References 10 publications

A Compact Quarter-Mode Siw Bandpass Filter With an Extremely Wide Stopband

A Compact Quarter-Mode Siw Bandpass Filter With an Extremely Wide Stopband

A quasi-elliptic response triple-mode SIW bandpass filter with controllable transmission zeros

A Double Optimized Transmission Zeros Based on Pi-CRLH Dual-Band Bandpass Filter

Contact Info

Product

Resources

About