Development of a novel faceted, conformal, slotted-waveguide subarray for sensor applications with full 360° azimuth tracking capabilities

Traille, Anya; Ratner, Justin; Hopkins, G.D.; Tripp, V.K.

doi:10.1109/aps.2007.4396374

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…Various design methods and realizations of conformal slotted waveguide antenna arrays (CSWAAs) have been proposed so far in the literature [3]- [9]. These works present the analysis [3]- [6] and design [7]- [9] of slot antennas in the curved broad wall perpendicular to the conformation axis. (e-mail: haris_stou@hotmail.com, {charalampos.stoumpos; maria.garcia-vigueras}@insa-rennes.fr).…”

Section: Introductionmentioning

confidence: 99%

Compact Additively Manufactured Conformal Slotted Waveguide Antenna Array

Stoumpos

Gouguec

Allanic

et al. 2023

Antennas Wirel. Propag. Lett.

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In this work we present the design and fabrication in metallic 3D-printing of a compact conformal slotted waveguide antenna array operating in the Ku-band. The application objective, although not limited only to this, is the optimisation of an antenna element which by stacking will be able to form a quasicylindrical sector. A beamforming network will be used for beamsteering in the elevation plane as coverage in the azimuthal plane is guaranteed by the conformal geometry. The compact design of the antenna element is therefore of great significance. For this reason, a direct feeding scheme by a coaxial connector is adopted. The antenna has been optimized following multiple parametric analyses of its geometrical parameters for the enhancement of the bandwidth, return losses and realized gain. The antenna was fabricated with Selective Laser Melting in aluminium and the experimental results agree well with the numerically calculated ones. The proposed CSWAA exhibits a reflection coefficient below -10 dB, realized gain above 14 dBi, as well as good crosspolarization and side-lobe level over a relative bandwidth of 8%.

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Section: Introductionmentioning

confidence: 99%

Compact Additively Manufactured Conformal Slotted Waveguide Antenna Array

Stoumpos

Gouguec

Allanic

et al. 2023

Antennas Wirel. Propag. Lett.

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“…To fight these difficulties, Radwan et al [3] have investigated the possibility to reduce the side lobe level by using a bended slotted rectangular waveguide, or in the study by Maritz [4] by designing slotted waveguides with Z-shape slots engraved in the broad wall of the waveguide. In Traille et al [5], a novel faceted conformal slotted waveguide is studied for a full 360° azimuth tracking application. Moreover, in this reference, the authors developed a center-fed narrow-wall slotted waveguide array with an H-shape T junction to extend bandwidth and to obtain a broadside radiation (without any scanning of beam vs. frequency).…”

Section: Introductionmentioning

confidence: 99%

Integrated Slotted Serpentine Waveguide to Enhance Radiation Properties and Efficiency

2022

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Slotted waveguides are often used when high-power and high-efficiency antennas must be designed and particularly for millimeter waves applications (automotive radar for example). But it is not easy to choose any distance between radiation slots because of the guided wavelength, to obtain a wide beam in E plane and so to cover a wide angular sector in beam scanning antennas. Moreover, the main beam depends of frequency because it is a progressive wave antenna. In this article, the authors propose an original solution based on a slotted serpentine waveguide with slots on the narrow wall of the waveguide allowing to obtain a very wide radiation pattern in E plane, and this antenna is manufactured, thanks a PCB (printed circuit board) process with empty waveguides to enhance the efficiency for the global structure. Simulations and measurements are given to validate the idea and the technological process in W band, and some different prototypes demonstrate that it could be possible to obtain a wide angular sector in a beam scanning antenna configuration.INDEX TERMS slotted waveguides, serpentine, millimeter wave, PCB technology.

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“…e array elements are synthesized using the Dolph-Chebyshev technique, and the presented array operates in the frequency range of 400-800 MHz. In [12], a conformal rectangular waveguide (RWG) is presented for aircraft applications. It covered 360°azimuth angle for scanning purpose in the frequency range of 16-16.6 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…It is worth mentioning that the designs presented in [11][12][13][14][15] are simulation based and their experimental or analytical validation is not available. In [16], an analytical design approach is adopted and equations are presented for a cylindrical curved slot array.…”

Section: Introductionmentioning

confidence: 99%

Nose-Cone Conformal Substrate-Integrated Waveguide Slot Array Antenna for X-Band Radar Applications

Khalil

Ahmed

2019

International Journal of Antennas and Propagation

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This paper presents the design of nose-cone conformal substrate-integrated waveguide (SIW) slot array antenna for modern radar applications. Firstly, the wave propagation characteristics have been investigated in doubly curved SIW, and it has been observed that they are non-uniform along the longitudinal direction of nose-cone conformal SIW. To ensure the constant wave propagation along the length of conformal SIW, the conventional design of SIW is reformulated for nose-cone conformal SIW and circuit model modification has been demonstrated. Secondly, the procedure for designing a SIW-based array on curved surfaces has been developed. In the proposed design, rectangular waveguide (RWG) to SIW feeding structure has been used to avoid spurious radiations. Finally, 1 × 6 element-based nose-cone conformal slotted array has been designed and compared with planar and cylindrical conformal arrays. It has been observed from the results that the nose-cone conformal slot array offers low sidelobe levels (SLLs) and high gain. For the validation of the proposed design, the conformal slotted array has been fabricated and measured, which exhibited a reasonable agreement between the measured and the simulated data.

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Development of a novel faceted, conformal, slotted-waveguide subarray for sensor applications with full 360° azimuth tracking capabilities

Cited by 7 publications

References 6 publications

Compact Additively Manufactured Conformal Slotted Waveguide Antenna Array

Compact Additively Manufactured Conformal Slotted Waveguide Antenna Array

Integrated Slotted Serpentine Waveguide to Enhance Radiation Properties and Efficiency

Nose-Cone Conformal Substrate-Integrated Waveguide Slot Array Antenna for X-Band Radar Applications

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