Wideband circularly polarized leaky‐wave antenna with flat gain using printed ridge gap waveguide

Shi, Shujie; Zhang, Qian; Ding, Wei‐Ping

doi:10.1002/mmce.21751

Cited by 9 publications

(3 citation statements)

References 16 publications

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“…Unfortunately, metal GW is bulky and difficult to be integrated with the other mmW circuits. To solve this problem, microstrip ridge gap waveguide, 22–24 in‐versed microstrip ridge gap waveguide 25 and integrated substrate gap waveguide (ISGW) 26,27 have been proposed and demonstrated in PCB technology. In ISGW, air gap is replaced by dielectric slab, which leads to easy integration, better stability, and more freedoms of circuit design 28 .…”

Section: Introductionmentioning

confidence: 99%

Integrated substrate groove gap waveguide and application for filter design

Chen

Shen

Zhang

et al. 2021

Int J RF Microw Comput Aided Eng

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In this article, an integrated substrate groove gap waveguide (Integrated‐SGGW) is proposed, which is composed of gap and groove layer in printed circuit board technology, which is considered a highly integrated circuit design technology. Electromagnetic wave is transmitted via the dielectric groove in transverse electric mode. Firstly, the waveguide is analyzed, including dispersion characteristics, transmission characteristics, characteristic impedance and field distribution. Then, the theory of dispersion and characteristic impedance for the Integrated‐SGGW are given, and the waveguide is comprehensively analyzed. An Integrated‐SGGW is fabricated, verified, and compared with substrate integrated waveguide and other waveguides. To show Integrated‐SGGW applications in the design of millimeter wave circuits, a third‐order bandpass filter using the Integrated‐SGGW is designed, fabricated, and verified.

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Section: Introductionmentioning

confidence: 99%

Integrated substrate groove gap waveguide and application for filter design

Chen

Shen

Zhang

et al. 2021

Int J RF Microw Comput Aided Eng

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“…However, at millimeter‐wave frequencies such as the 57–64 GHz band that is announced unlicensed by the Federal Communications Commission (FCC), the aforementioned techniques become inefficient to combat the major challenge of free space path losses normally encountered at higher frequency bands above 30 GHz. On the other hand, and to achieve an acceptable radiation pattern with a wideband isolation at millimeter‐wave frequencies, ridge gap waveguide (RGW) technology has been employed recently by many research groups 23‐28 …”

Section: Introductionmentioning

confidence: 99%

Ridge gap waveguide antenna array with improved mutual isolation for millimeter wave applications

Attia

Kishk

Abdalla

et al. 2021

Int J RF Microw Comput Aided Eng

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Fifth‐generation millimeter‐wave devices with multiple antennas require minimal mutual interference for better overall performance. This article presents a simple but novel technique to improve the isolation between closely packed slot antenna arrays. A printed ridge gap waveguide (PRGW) structure is used to realize a low loss millimeter‐wave array's feeding mechanism. By optimally introducing a defective upper plate within the PRGW structure, the measured port isolation of the antenna elements is improved by 17 dB at 61.3 GHz. The antenna array is impedance matched to the feeding PRGW structure over a wide frequency range of 54–67 GHz. Moreover, the radiation patterns are consistent showing broadside radiation before and after introducing the defect in the PRGW structure. The fabricated prototype of the PRGW fed slot antenna array validated the predicted isolation and return‐loss bandwidths of the proposed radiating system.

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“…Liu et al 43 presented an 2 × 2 broadband CP low-profile monopole array antenna. A wideband beam scanning CP leaky-wave antenna for Ku band is proposed by Shi et al, 44 which is based on the printed ridge gap waveguide structure.…”

Section: Introductionmentioning

confidence: 99%

Design of a wideband right‐handed circularly polarized array of miniaturized mushroom‐shaped antennas for direct broadcast satellite application

Kola

Chatterjee

Patanvariya

2020

Micro & Optical Tech Letters

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In this study, a wideband right‐handed circularly polarized (RHCP) array of microstrip patch antennas, for direct broadcast satellite (DBS, 12.2‐12.7 GHz) services have been presented. The single element of the array is a two‐dimensional mushroom‐shaped fractal antenna of resonating frequency 12.49 GHz and an impedance bandwidth of 1.12 GHz. The proposed single element is designed by etching a pair of Minkowski square boxes in one of the two opposite sides of a regular octagon. Furthermore, a thin slot of length equal to one side of the regular octagon is placed in‐between the two Minkowski boxes, which results in the proposed mushroom‐shaped radiating element. The proposed four‐element linear array resonates at 12.47 GHz and gives an impedance bandwidth of 1.04 GHz. The feed network of the array is designed in such a manner to make the array structure very compact. The fabricated single element gives an RHCP gain of 5.25 dBic and its corresponding circular Polarization (CP) bandwidth of 200 MHz. The array gives an RHCP gain of 11.59 dBic and a CP bandwidth of 460 MHz. The measured CP bandwidth of the fabricated array prototype ensures 92% coverage of the entire DBS band with circularly polarized wave, and hence can be used for its related applications.

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Wideband circularly polarized leaky‐wave antenna with flat gain using printed ridge gap waveguide

Cited by 9 publications

References 16 publications

Integrated substrate groove gap waveguide and application for filter design

Integrated substrate groove gap waveguide and application for filter design

Ridge gap waveguide antenna array with improved mutual isolation for millimeter wave applications

Design of a wideband right‐handed circularly polarized array of miniaturized mushroom‐shaped antennas for direct broadcast satellite application

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