Bi-directional Beams Waveguide Slotted Antenna at Millimeter Wave

Sabri, Muataz W.; Murad, Noor Asniza; Rahim, M. K. A.

doi:10.12928/telkomnika.v16i4.9057

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…To get the optimal array gain and the traditional array gain, we repeat the same steps. Figure 9(b) illustrates high-level noise environment array gain (dB) vs 𝜃 𝑠 for several 𝑆 𝑛 (𝜔 𝑠 )/𝜎 𝜔 2 levels of a MVDR Beamformer [39], [40].…”

Section: White Noise Plus Spatially Spread Interference Considerationmentioning

confidence: 99%

Discrete interferences optimum beamformer in correlated signal and interfering noise

Singh

Yadav

et al. 2022

IJECE

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This paper introduces a significant special situation where the noise is a collection of D-plane interference signals and the correlated noise of D+1 is less than the number of array components. An optimal beamforming processor based on the minimum variance distortionless response (MVDR) generates and combines appropriate statistics for the D+1 model. Instead of the original space of the N-dimensional problem, the interference signal subspace is reduced to D+1. Typical antenna arrays in many modern communication networks absorb waves generated from multiple point sources. An analytical formula was derived to improve the signal to interference and noise ratio (SINR) obtained from the steering errors of the two beamformers. The proposed MVDR processor-based beamforming does not enforce general constraints. Therefore, it can also be used in systems where the steering vector is compromised by gain. Simulation results show that the output of the proposed beamformer based on the MVDR processor is usually close to the ideal state within a wide range of signal-to-noise ratio and signal-to-interference ratio. The MVDR processor-based beamformer has been experimentally evaluated. The proposed processor-based MVDR system significantly improves performance for large interference white noise ratio (INR) in the sidelobe region and provide an appropriate beam pattern.

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Section: White Noise Plus Spatially Spread Interference Considerationmentioning

confidence: 99%

Discrete interferences optimum beamformer in correlated signal and interfering noise

Singh

Yadav

et al. 2022

IJECE

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“…The slot used in this work is cut in the longitude direction of the waveguide structure. Figure shows the schematic diagram of the waveguide slotted antenna . Each slot has length of L and width of W , the distance between two centered slots is d , and the offset from the center line is x .…”

Section: Antenna Design and Fabricationmentioning

confidence: 99%

Highly directive 3D‐printed dual‐beam waveguide slotted antennas for millimeter‐wave applications

Sabri¹,

Murad²,

Rahim³

2019

Micro & Optical Tech Letters

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A highly directive 3D-printed dual beam waveguide slotted antennas designed at 28 GHz are presented in this work. By having dual-beam directional pattern, the coverage area can be doubled. The performance of dual-beam waveguide slotted antennas is investigated with new metal 3D printing technique. The slots are basically designed at half wavelength dimension and distance with symmetrical and asymmetrical offset to form different phase radiations. The longitudinal slotted arrays are implemented on both side of the waveguide broad walls, thus enabling the dual beams on the antenna. The proposed antennas are simulated using computer simulation technology software and fully metal printed using EOS M280 machine. The simulated performance is validated experimentally using network analyzer measurement. The dimensional tolerance and surface roughness are profiled in this work. A good match better than 10 dB is achieved. The antennas are proposed for three-dimensional beamforming in millimetre wave applications. K E Y W O R D S 3D printed, beamforming, dual-beam, millimeter waves, waveguide slotted antenna

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“…One of the most important applications of split waveguide antennas is radar, because the design specifications need mechanical strength and high gains. The signal transmitted by the radar antennas is of very high peak power, and for this reason, the waveguide antennas are a suitable alternative to planar arrays [3]- [6]. The slotted waveguide array (SWA) is used in remote sensing and radar applications because it has a high radiation efficiency [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Design of traveling wave slotted waveguide array antenna with high efficiency

Mohammed

Jaber²

2023

IJEECS

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<span lang="EN-US">The slotted waveguide antenna is one of the most important antennas used in high-frequency applications, in radars, navigation systems, remote sensing systems and communications because of its efficiency and high gains. In this paper, the slotted waveguide antenna was designed and simulated with suitable specifications with a working frequency range of 2-2.45 where this antenna was checked by plotting S parameters in the designed frequency band and we got a very good reflection coefficient for the designed antenna (S11) at the operating frequency, draw and illustrate the three-dimensional radiation pattern of the designed antenna that shows the gain and bandwidth at the operating frequency. The performance of a 9-element slotted waveguide array antenna with an operating frequency of up to 12 GHz was also investigated by plotting the S11 parameters and illustrating the designed antenna directivity diagram.We obtained the reflection coefficient of the designed array antenna (S11) below -23 dB at the operating frequency, and the SWG antenna directivity pattern with a maximum value of=13.2 dB and a minimum value of=-23 dB.</span>

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Bi-directional Beams Waveguide Slotted Antenna at Millimeter Wave

Cited by 6 publications

References 10 publications

Discrete interferences optimum beamformer in correlated signal and interfering noise

Discrete interferences optimum beamformer in correlated signal and interfering noise

Highly directive 3D‐printed dual‐beam waveguide slotted antennas for millimeter‐wave applications

Design of traveling wave slotted waveguide array antenna with high efficiency

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