Compact Additively Manufactured Conformal Slotted Waveguide Antenna Array

Stoumpos, Charalampos; Gouguec, Thierry Le; Allanic, Rozenn; Garcia-Vigueras, María; Amiaud, Anne-Charlotte

doi:10.1109/lawp.2023.3266376

Cited by 11 publications

(4 citation statements)

References 32 publications

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“…Lower measured gain is primarily due to some mismatch and higher material losses (unpolished surface) than in simulations. Additionally, non-ideal positioning of the antenna under test (AUT) and Standard Gain Horn (SGH) antenna with respect to to the probe and non-ideal calibration could have contributed to the discrepancies between the measured and simulated results [30].…”

Section: Measured Resultsmentioning

confidence: 99%

Design of integrated wideband WR34‐band diplexer‐antenna array module for exploration of monolithic metal 3‐D printing for space applications

Vaitukaitis,

Rao,

Nai

et al. 2024

IET Microwaves Antenna & Prop

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The design of a wideband diplexer integrated with a 16‐slot Continuous Transverse Stub (CTS) antenna array is presented. The diplexer‐antenna array module covers the whole WR34 band. The Tx and Rx bands cover 21.7–26 and 27.5–33 GHz ranges, respectively. The diplexer is designed to have a 100 dB attenuation in the stopband and 40 dB isolation between the channels. The antenna array has a high gain, between 26.9 and 31 dBi, at the lowest and highest frequencies. For the preliminary exploration of monolithic metal 3‐D printing of complex geometry integrated RF front ends, two prototypes were manufactured in AlSi10 Mg. One‐piece fabrication eliminates complicated assembly, enhances reliability, and reduces weight, which is more desirable for space applications. Due to several factors, namely, an unpolished inner surface and imperfect printing quality, the diplexer had a poor measured performance. The measured results of the antenna array had a relatively better agreement with simulations. Although, the realised gain was affected by the much lower effective conductivity of the unpolished 3‐D printed material. Hence, the measured realised gain was between 27.8 and 30.9 dBi in the 29–33 GHz range.

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Section: Measured Resultsmentioning

confidence: 99%

Design of integrated wideband WR34‐band diplexer‐antenna array module for exploration of monolithic metal 3‐D printing for space applications

Vaitukaitis,

Rao,

Nai

et al. 2024

IET Microwaves Antenna & Prop

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“…As alternative to DMLS, The article referenced as [31] presents a LPBF 3D printed compact Conformal Slotted Waveguide Array Antenna (CSWAA), designed to operate at 14.5 GHz. The proposed antenna is shown in Fig.…”

Section: E Lpbfmentioning

confidence: 99%

Exploring Design Approaches for 3D Printed Antennas

Carvalho,

Reis,

Mateus

et al. 2024

IEEE Access

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This comprehensive review explores advancements in the design, fabrication and performance evaluation of three-dimensional (3D) printed antennas, across different frequency ranges. The review highlights the use of diverse printing methods, materials and structures, to achieve specific antenna characteristics and designs, such as wide bandwidth, high gain, circular polarization, and beamforming capabilities. Simulation and measurement results are compared to assess antenna performance, considering parameters such as impedance bandwidth, radiation patterns, gain, and efficiency. The findings showcase the significant potential of 3D printing in the development of antennas for wireless communications, terahertz fr equencies, transmitarray, and multi-beam systems. Various printing techniques are employed to fabricate antennas with complex geometries and optimized performance. Rigorous measurements validate simulation results, addressing challenges related to printing resolution and material selection. This review emphasizes the contributions of 3D printing in antenna engineering, offering customization capabilities, rapid 3D, and improved performance.

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“…Typically, a phased slotted waveguide array performs the phase dimensional beam scanning along the waveguide arrangement direction. This array commonly operates under resonant conditions, radiating linearly polarized electromagnetic waves [7][8][9][10][11]. The radiation elements typically consist of a series of slots positioned along the narrow wall of the waveguide.…”

Section: Introductionmentioning

confidence: 99%

A Circularly Polarized Non-Resonant Slotted Waveguide Antenna Array for Wide-Angle Scanning

Han,

Liu

2024

Sensors

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A compact circularly polarized non-resonant slotted waveguide antenna array is proposed with the aim of achieving wide-angle scanning, circular polarization, and low side-lobe levels. The designed antenna demonstrates a scanning range of +11° to +13° in the frequency domain and a beam scanning range of −45° to +45° in the phase domain. This design exhibits significant advantages for low-cost two-dimensional electronic scanning circularly polarized arrays. It employs a compact element that reduces the aperture area by 50% compared to traditional circular polarization cavities. Additionally, the staggered array method is employed to achieve an element spacing of 0.57λ within the azimuth plane. Isolation gaps were introduced into the array to enhance the circular polarization performance of non-resonant arrays. The Taylor synthesis method was employed to reduce the side-lobe levels. A prototype was designed, fabricated, and measured. The results indicate superior radiation efficiency, favorable VSWR levels, and an axis ratio maintenance below 3 dB across the scanning range. The proposed antenna and methodology effectively broaden the beam scanning angle of circularly polarized slotted waveguide array antennas.

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Compact Additively Manufactured Conformal Slotted Waveguide Antenna Array

Cited by 11 publications

References 32 publications

Design of integrated wideband WR34‐band diplexer‐antenna array module for exploration of monolithic metal 3‐D printing for space applications

Design of integrated wideband WR34‐band diplexer‐antenna array module for exploration of monolithic metal 3‐D printing for space applications

Exploring Design Approaches for 3D Printed Antennas

A Circularly Polarized Non-Resonant Slotted Waveguide Antenna Array for Wide-Angle Scanning

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