Wideband Circularly Polarized Millimeter-Wave DRA Array for Internet of Things

Attia, Hussein; Abdalrazik, Ahmad; Sharawi, Mohammad S.; Kishk, Ahmed A.

doi:10.1109/jiot.2023.3235344

Cited by 13 publications

(7 citation statements)

References 36 publications

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“…Millimeter-wave (mmWave) spectrum potential is currently being exploited in the fields of Internet of things (IoT) [ 1 ], vehicular communication [ 2 ], radio astronomy [ 3 ], mobile communications [ 4 ], energy harvesting [ 5 ], satellite communication [ 6 ], millimeter-wave imaging [ 7 ], etc. It endeavors to deliver higher bandwidth with low latency and a significant data rate.…”

Section: Introductionmentioning

confidence: 99%

“…Also, CP antennas are preferred over linearly polarized (LP) antennas as they provide the solutions to antenna misalignment, polarization change due to multipath, and attenuation to rain and snow. Therefore, broadband and CP can be realized with structures such as a magneto–electric dipole [ 6 ], dielectric resonator (DRA) [ 1 ], substrate integrated-waveguide (SIW) loop antennas [ 10 ], and planar dipole antennas fed by an SIW [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

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A Low-Profile Circularly Polarized Millimeter-Wave Broadband Antenna Analyzed with a Link Budget for IoT Applications in an Indoor Scenario

Bhadravathi Ghouse,

Mane,

Ali

et al. 2024

Sensors

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Broadband antennas with a low-profile generating circular polarization are always in demand for handheld/ portable devices as CP antennas counter multipath and misalignment issues. Therefore, a compact millimeter-wave antenna is proposed in this article. The proposed antenna structure comprises two circular rings and a circular patch at the center. This structure is further embedded with four equilateral triangles at a 90° orientation. The current entering the radiator is divided into left and right circular directions. The equilateral triangles provide the return path for current at the differential phase of ±90°, generating circular polarization. Structural development and analysis were initially performed through the characteristic mode theory. It showed that Modes 1 to 4 generated good impedance matching from 20 to 30 GHz and Modes 1 to 5, from 30 to 40 GHz. It also demonstrated the summation of orthogonal modes leading to circular polarization. The antenna-measured reflection coefficient |S11| > 10 dB was 19 GHz (23–42 GHz), and the axial ratio at −3 dB was 4.2 GHz (36–40.2 GHz). The antenna gain ranged from 4 to 6.2 dBi. The proposed antenna was tested for link margin estimation for IoT indoor conditions with line-of-sight (LOS) and non-line-of-sight (NLOS) conditions. The communication reliability with co- and cross-polarization was also studied under these conditions, and the results proved to be satisfactory.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Low-Profile Circularly Polarized Millimeter-Wave Broadband Antenna Analyzed with a Link Budget for IoT Applications in an Indoor Scenario

Bhadravathi Ghouse,

Mane,

Ali

et al. 2024

Sensors

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“…Consequently, it is crucial for IoT devices to be 5G-compliant [7]. To achieve this, cost-effective, compact-sized, high-gain, and efficient antennas with broad bandwidth are essential [8].…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of a Compact Super-Wideband MIMO Antenna with High Isolation and Gain for 5G Applications

Esmail,

Koziel,

Pietrenko-Dabrowska

2023

Electronics

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This paper presents a super-wideband multiple-input multiple-output (SWB MIMO) antenna with low profile, low mutual coupling, high gain, and compact size for microwave and millimeter-wave (mm-wave) fifth-generation (5G) applications. A single antenna is a simple elliptical-square shape with a small physical size of 20 × 20 × 0.787 mm3. The combination of both square and elliptical shapes results in an exceptionally broad impedance bandwidth spanning from 3.4 to 70 GHz. Antenna dimensions are optimized using the trust-region algorithm to enhance its impedance bandwidth and maintain the gain within a predefined limit across the entire band. For that purpose, regularized merit function is defined, which permits to control both the single antenna reflection response and gain. Subsequently, the SWB MIMO system is constructed with four radiators arranged orthogonally. This arrangement results in high isolation, better than 20 dB, over a frequency band from 3.4 to 70 GHz band. Further, the system achieves an average gain of approximately 7 dB below 45 GHz and a maximum gain equal to 12 dB for 70 GHz. The system exhibits excellent diversity performance throughout the entire bandwidth, as evidenced by the low envelope correlation coefficient (ECC) (<3 × 10−3), total active reflection coefficient (TARC) (≤−10 dB), and channel capacity loss (CCL) (<0.3 bit/s/Hz) metrics, as well as the high diversity gain (DG) of approximately 10 dB. Experimental validation of the developed SWB MIMO demonstrates a good matching between the measurements and simulations.

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Section: Introductionmentioning

confidence: 99%

“…Over the previous decades, many wideband CP elements have been presented for array designs [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Stacked patch [5][6][7], ME dipole [8,9], curl antenna [10][11][12], spiral antenna [13,14], cavity antenna [15][16][17], slot antenna [18], and dielectric resonator antenna [19][20][21] are the popular elements. For example, in [6], a wideband circularly polarized radiation is generated owing to the combination of a pair of shorted pins with four identical square patches, and the 3-dB AR bandwidth of the stacked patch array achieves 25.4%.…”

Section: Introductionmentioning

confidence: 99%

Wideband Circularly Polarized Magneto-Electric Dipole Antenna Array with Metallic Walls for Millimeter-Wave Applications

2023

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This work proposes a new circularly polarized (CP) 4 × 4 magneto-electric (ME) dipole antenna array using metallic walls for 28 GHz band applications. The ME dipole element is surrounded by eight metallic walls and is excited fed by microstrip line. By introducing metallic walls, the 3-dB axial ratio (AR) bandwidth of the element is increased from 23% to 36.5%. The 4 × 4 array is fed by a simple 1-to-16 microstrip power divider. In contrast to the conventional substrate integrated waveguide (SIW) power divider using two layers, the proposed microstrip divider only needs one substrate layer. The experimental 3-dB AR bandwidth of the array achieves 30.1%, ranging from 22.5 to 30.5 GHz, which falls inside the −10 dB impendence bandwidth. The measured maximum gain is 19.2 dBic.

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Wideband Circularly Polarized Millimeter-Wave DRA Array for Internet of Things

Cited by 13 publications

References 36 publications

A Low-Profile Circularly Polarized Millimeter-Wave Broadband Antenna Analyzed with a Link Budget for IoT Applications in an Indoor Scenario

A Low-Profile Circularly Polarized Millimeter-Wave Broadband Antenna Analyzed with a Link Budget for IoT Applications in an Indoor Scenario

Design and Optimization of a Compact Super-Wideband MIMO Antenna with High Isolation and Gain for 5G Applications

Wideband Circularly Polarized Magneto-Electric Dipole Antenna Array with Metallic Walls for Millimeter-Wave Applications

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