Integrated Design and Prototyping of a 77 GHz Automotive Medium Range Radar Into Car Rear Lamp

Caffa, Mattia; Bottigliero, Stefano; Ramonda, Federico; Gioanola, Luca; Maggiora, Riccardo

doi:10.1109/tvt.2023.3324986

Cited by 1 publication

(3 citation statements)

References 26 publications

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“…Finally, thanks to the inclination of the microstrip lines, it radiates an horizontally polarized field while keeping a limited width (i.e.,

{W}_{x}< \frac{{\lambda }_{0}}{4}

, λ 0 being the wavelength at the central frequency—Figure 1). This latter feature is desirable since it limits the mutual coupling within closely packed radiators in FMCW radars (Caffa et al., 2023).…”

Section: Antenna Model and Working Mechanismmentioning

confidence: 99%

“…Future works will be aimed at further investigating the performance and the potentialities of the NZA when integrated within FMCW radars for advanced driver assistance systems and autonomous vehicles (Caffa et al., 2023).…”

Section: Conclusion and Final Remarksmentioning

confidence: 99%

“…In the former case, the energy is distributed along the entire length of the antenna and a continuous traveling wave propagates along the antenna support, while the latter relies on the generation of standing waves. Due to the extension of the stubs toward the axis orthogonal to the microstrip feed line, strong coupling effects can arise when used in close arrangements as for frequency‐modulated continuous wave ( FMCW ) radars (Caffa et al., 2023). Such undesired electromagnetic interactions may lead to errors in the beam pointing as well as gain reductions with a sidelobe level increment, too, and they need to be taken into account in the design process of the single antenna element.…”

Section: Introductionmentioning

confidence: 99%

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AI‐Assisted Design of Printed Edge‐Fed Non‐Uniform Zig‐Zag Antenna for mm‐Wave Automotive Radar

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et al. 2024

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In this paper, the design of a novel horizontally polarized single‐layer antenna for 77 (GHz) automotive radar applications is4 addressed. An innovative non‐uniform zig‐zag parametrization of the antenna layout is considered to enable a more flexible control on both the impedance matching in the working frequency band and the shaping of the radiated beam pattern with respect to a standard (uniform) one without compromising the linear (horizontal) polarization of the radiated field. Such a polarization guarantees a lower back‐scattering from road pavements, resulting in a reduced amount of clutter and thus allowing a more robust target detection. Moreover, the single‐layer layout has several advantages in terms of fabrication simplicity/costs and mechanical robustness to vibrations. The design of the proposed non‐uniform zig‐zag antenna (NZA) is performed through a customized implementation of the System‐by‐Design (SbD) approach that fruitfully combines machine learning and evolutionary optimization to efficiently deal with the computational complexity at hand. An extensive numerical validation, dealing with designs of different lengths, verifies the high performance of the NZA in terms of beam direction deviation (e.g., BDD < 1 (deg)), sidelobe level (e.g., SLL < −18.2 (dB)), and polarization ratio (e.g., PR > 20 (dB)) within the working frequency band (GHz), as well as its superiority over competitive designs. Finally, the realization of a prototype and its experimental test, validate the proposed NZA concept for automotive mm‐wave radar applications in advanced driver assistance systems and autonomous vehicles such as, for instance, adaptive cruise control, collision avoidance, and blind spot detection.

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“…Finally, thanks to the inclination of the microstrip lines, it radiates an horizontally polarized field while keeping a limited width (i.e.,