Development of Low Profile Cavity Backed Crossed Slot Antennas for Planar Integration

Luo, Guo Qing; Hu, Zhi Fang; Liang, Yaping; Yu, Li; Sun, Ling Ling

doi:10.1109/tap.2009.2028602

Cited by 248 publications

(22 citation statements)

References 20 publications

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“…They are normally based on well characterized dielectric and conductive materials, like Rogers Duroid 5880 [8][9][10]14,[18][19][20][21][22][23][24][25], Rogers 4003 [12], Rogers 3003 [14], and F4B [16] and FR4 Microwave [26][27][28][29], which lead to consistent results between simulations and measurements. The thinness of the substrates used (between 0.5 mm and 2 mm) [8,10,12,13,16,[18][19][20][24][25][26]28,30] offers good BW and radiation efficiencies, giving some clues about their potential for textile applications. They also allow for a plethora of design alternatives to improve the EM performances, normally based on three patch shapes, like rectangular [8,9,[11][12][13]15,18,20,22,[24][25][26]29,30], circular…”

Section: Introductionmentioning

confidence: 99%

“…Recent literature on fully-grounded planar topology antennas constructed with non-textile materials show promising electromagnetic (EM) performances in terms of measured BW, maximum peak gain, radiation efficiency, and FTBR [8][9][10][11][12][13][14][15][16][17]. They are normally based on well characterized dielectric and conductive materials, like Rogers Duroid 5880 [8][9][10]14,[18][19][20][21][22][23][24][25], Rogers 4003 [12], Rogers 3003 [14], and F4B [16] and FR4 Microwave [26][27][28][29], which lead to consistent results between simulations and measurements. The thinness of the substrates used (between 0.5 mm and 2 mm) [8,10,12,13,16,[18][19][20][24][25][26]28,30] offers good BW and radiation efficiencies, giving some clues about their potential for textile applications.…”

Section: Introductionmentioning

confidence: 99%

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Planar Textile Off-Body Communication Antennas: A Survey

2019

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Fully textile smart wearables will be the result of the complete integration and miniaturization of electronics and textile materials. Off-body communications are key for connecting smart wearables with external devices, even for wireless power transfer or energy harvesting. They need to fulfill specific electromagnetic (EM) (impedance bandwidth (BW), gain, efficiency, and front to back radiation (FTBR)) and mechanical (bending, crumpling, compression, washing and ironing) requirements so that the smart wearable device provides the required performance. Therefore, textile and flexible antennas require a proper trade-off between materials, antenna topologies, construction techniques, and EM and mechanical performances. This review shows the latest research works for textile and flexible planar, fully grounded antennas for off-body communications, providing a novel design guide that relates key antenna performance parameters versus topologies, feeding techniques, conductive and dielectric textile materials, as well as the behavior under diverse measurement conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Planar Textile Off-Body Communication Antennas: A Survey

2019

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“…A variety of SIW based cavity-backed antennas reported in the literature [1][2][3][4][5][6][7][8][9][10][11] . However, most of them offer limited operating bandwidth which makes them unfit for many practical applications.…”

Section: Introductionmentioning

confidence: 99%

“…Melioration in the bandwidth was achieved by exciting the slots of multi-resonance characteristics simultaneously within the required frequency range 8 . Two resonant slots are employed to generate dual-resonance 9 . By properly tuning these resonances, a wide bandwidth characteristic was realised with uniform gain over the entire operating frequency band.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth Enhancement of Substrate Integrated Waveguide Cavity-backed Bow-tie-complementary-ring-slot Antenna using a Shorted-via

Kumar

2018

Def. Sc. Jl.

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In this study, a planar cavity-backed bow-tie-complementary-ring-slot antenna is proposed, and a new approach for bandwidth enhancement using a shorted-via is introduced. A shorted-via concept overcomes the narrow impedance bandwidth of a conventional substrate integrated waveguide cavity-backed antenna. By adjusting the location of the shorted-via (placed just above the centroid of the radiating slot), the individual bandwidth of the lower and higher order resonances has been tuned below -10 dB criterion, which results in the broadening of the bandwidth. Finally, the antenna is proficient to operate for an impedance bandwidth of 15.71 per cent, ranging from 12.02~14.07 GHz. The proposed antenna shows a gain of better than 4 dBi within the operating band with less than 0.5 dBi variation. Moreover, the antenna preserves good radiation characteristics, which is similar to that of the conventional metallic counterpart. To validate the simulated results, an antenna is fabricated and tested. The simulated results in terms of the reflection coefficient, gain, and radiation patterns are in good agreement with the measured results.

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“…It is usually desirable that such antennas should be low cost, low profile, light weight and have good impedance matching and radiation performance. An appropriate candidate for such an antenna can be an antenna [1][2][3][4][5][6] based on the substrate integrated waveguide (SIW) technology [7]. However, for some applications especially at lower frequencies, the width of SIW can be too big.…”

Section: Introductionmentioning

confidence: 99%