Wideband planar substrate integrated waveguide cavity-backed amended dumbbell–shaped slot antenna

Lokeshwar, Bollavathi; Venkatasekhar, D.; Sudhakar, A.

doi:10.1016/j.aeue.2020.153489

Cited by 18 publications

(11 citation statements)

References 29 publications

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“…SIW techniques have been emerging as a paramount role in microwave devices due to high isolation, smaller wavelength, high power capability and planar configurations 6 . The application of SIW more attractive owing to magnetic wall shielded medium, such as circular polarization, 7 high gain, 8 phase correction, 9 minimize the side lobe level 10 and bandwidth improvement 11 . SIW antennas are used in Wireless Body Area Networks (WBAN), 12 Beam‐Forming Network (BFN) 13 and radar systems 14 .…”

Section: Introductionmentioning

confidence: 99%

“…Due to planar configuration, the proposed antenna is useful for biomedicine, wireless and telecommunication applications. A simple and good technique has been implemented to obtain multiband within the compact size antenna, which is compared with previously elucidated antennas 1,6,7,8,11,12,19,20 . Many papers have been proposed based on the rectangular SIW cavity‐backed antenna.…”

Section: Introductionmentioning

confidence: 99%

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Multiband substrate integrated waveguide antenna loaded with slots using artificial neural network

Daniel¹

2022

Int J RF Mic Comp-Aid Eng

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A miniaturized cavity-backed antenna loaded with slots is designed using substrate integrated waveguide (SIW) technique for ISM/WiMAX/C-band/RFID applications. This antenna has been developed by embedding slots onto a hexagonal cavity for quad band radiation. The proposed antenna possesses hexagonal cavity, inverted U-shaped slot and innermost inverted U-shaped slot, which are governed by an inset microstrip feedline. The hexagonal SIW cavity-backed antenna offers cavity modes TM 110 at 4.16 GHz and TM 210 at 5.8 GHz. Two inverted U-shaped slots are introduced on the top metallic surface of the cavity to drive the lower resonant modes for acquiring antenna miniaturization. These lower resonance frequencies are formed by hybrid mode (i.e. TM 110 þ TM 210 ) at 2.4 GHz and coupling of hybrid mode (i.e. TM 110 + hybrid mode + TM 210 ) at 3.33 GHz. The ANN optimization method has been performed to enhance the performance of the antenna using MATLAB. The designed antenna has a compact size of 25 Â 25 Â 1.6 mm 3 , which is fabricated on a low cost FR-4 substrate having ε r ¼ 4:4 and tanδ ¼ 0:002. To validate the simulated equivalence, the fabricated antenna has been measured. It yields a fractional bandwidth of 5.04% (2.31-2.43 GHz) in the hybrid mode at 2.38 GHz, 6% (3.22-3.42 GHz) in the coupling of hybrid mode at 3.33 GHz, in the cavity mode TM 110 at 4.22 in the cavity mode TM 210 at 5.8 GHz with stable radiation pattern.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multiband substrate integrated waveguide antenna loaded with slots using artificial neural network

Daniel¹

2022

Int J RF Mic Comp-Aid Eng

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“…Therefore, the SIW exhibits the advantages of both microstrip line and metallic waveguide. Several designs of SIW CBSAs have been investigated for dual-band, polarization, size reduction in [9][10][11][12]. These designs retain advantages of low fabrication cost, low profile, and seamlessly planar integration.…”

Section: Introductionmentioning

confidence: 99%

Development of a Low-Profile Broadband Cavity Backed Bow-Tie Shaped Slot Antenna in Siw Technology

Lokeshwar¹,

Venkatasekhar²,

Ravindranadh³

2021

PIER Letters

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A new design of broadband cavity-backed slot antenna (CBSA) based on substrate integrated waveguide (SIW) technology is presented in this paper. An entire proposed antenna is printed on a Rogers RT/Duroid 5870 substrate, which consists of the SIW cavity, bow-tie slot, microstrip line feed. The proper position and size of the bow-tie slot on top of the SIW cavity will generate the cavity modes, which can be merged to obtain the broadband response. Moreover, to understand the effects of the geometric dimensions of the broadband antenna on S 11 are examined using parametric study. The final antenna configuration operates on a frequency band ranging from 9.25 GHz to 10.5 GHz with a fractional bandwidth of about 12.65% for the simulation part. The measured bandwidth for S 11 is about 12.1% (9.3 GHz to 10.5 GHz). The proposed antenna has a good measured gain of 6 dBi and 6.6 dBi, at 9.55 GHz and 10.35 GHz, respectively. The gain, the reflection coefficient, and the radiation patterns of the fabricated antenna are measured and indicated a very good agreement with simulations.

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“…To prevent back-radiation, the slot antenna is backed with SIW cavity [1]. In [2], for wideband applications, a non-resonant cavity is used along with dumbbell slot antenna. A broadband slot is used instead of a planar rectangular structure to increase the bandwidth of the slot antenna in [3].To improve impedance matching at the input port and bandwidth an offset feeding technique has been introduced in [4].…”

Section: Introductionmentioning

confidence: 99%

Design of Dual-band SIW Cavity Backed Slot Antenna for X-band Applications

Lokeshwar¹

2021

IJWMT

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In this article, a novel design for the bandwidth improvement of a substrate integrated waveguide (SIW) cavity-backed slot antenna (CBSA) is presented. The introduced structure utilizes an inverted L-shaped slot and unbalanced metalized vias. The proposed antenna is of low height and holds a planar geometry while sustaining lower losses and lightweight. The inverted L-shaped slot at the bottom plate is responsible for radiation. The quality factor of the SIW cavity is significantly reduced by the inverted L-shaped slot which leads to attaining a wideband response. The proposed antenna resonates at two frequencies 9.4025 GHz and 10.0075 GHz in the first band from the range 9.27 GHz to 10.13 GHz with the fractional bandwidth of 8.915% and at 12.07 GHz in the second band from the range 11.96 GHz to 12.2 GHz with fractional bandwidth of 1.9%.

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Wideband planar substrate integrated waveguide cavity-backed amended dumbbell–shaped slot antenna

Cited by 18 publications

References 29 publications

Multiband substrate integrated waveguide antenna loaded with slots using artificial neural network

Multiband substrate integrated waveguide antenna loaded with slots using artificial neural network

Development of a Low-Profile Broadband Cavity Backed Bow-Tie Shaped Slot Antenna in Siw Technology

Design of Dual-band SIW Cavity Backed Slot Antenna for X-band Applications

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