Using optimized eccentricity rexolite lens for electrical beam steering with inte-grated aperture coupled patch array

A. Karttunen (Corresponding Author), Jussi Säily, Antti Lamminen, J. Ala-Laurinaho, R. Sauleau, A.V. Räisänen

    Research output: Contribution to journalArticleScientificpeer-review

    18 Citations (Scopus)

    Abstract

    Design and measurement results of a beam-steering integrated lens antenna at 77 GHz are presented. An 8-element LTCC aperture coupled patch antenna feed array with a switching network is used to electrically steer the main beam in H-plane. A 100-mm diameter Rexolite (εr = 2.53) lens is simulated and tested. The eccentricity of the lens is optimized in an earlier work with ray-tracing simulations for improved beam-steering properties compared to the conventional extended hemispherical and elliptical lenses. The beamsteering properties including scan loss, main-beam width and direction, side-lobe levels, directivity, and cross-polarization are analyzed in detail with both simulations and radiation pattern measurements. As expected, the results show that the side-lobe and cross-polarization levels are not predicted accurately with large feed offsets using the ray-tracing simulations. Nevertheless, it is shown that the lens shape can be successfully optimized with the simple and fast ray-tracing simulations. The measured half-power beam-width at 77 GHz is 2.5°±0.2° up to the largest tested beam-steering angle of 30°. The optimized eccentricity low permittivity lens results in smaller scan loss than the conventional lenses.
    Original languageEnglish
    Pages (from-to)345-365
    Number of pages20
    JournalProgress In Electromagnetics Research B
    Volume44
    DOIs
    Publication statusPublished - 2012
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    beam steering
    eccentricity
    Lenses
    apertures
    lenses
    Ray tracing
    ray tracing
    cross polarization
    lobes
    simulation
    lens antennas
    Lens antennas
    Polarization
    antenna feeds
    patch antennas
    Switching networks
    Antenna feeders
    directivity
    Microstrip antennas
    Permittivity

    Cite this

    @article{af8706facdb0450f8c8dcda8433e4bc3,
    title = "Using optimized eccentricity rexolite lens for electrical beam steering with inte-grated aperture coupled patch array",
    abstract = "Design and measurement results of a beam-steering integrated lens antenna at 77 GHz are presented. An 8-element LTCC aperture coupled patch antenna feed array with a switching network is used to electrically steer the main beam in H-plane. A 100-mm diameter Rexolite (εr = 2.53) lens is simulated and tested. The eccentricity of the lens is optimized in an earlier work with ray-tracing simulations for improved beam-steering properties compared to the conventional extended hemispherical and elliptical lenses. The beamsteering properties including scan loss, main-beam width and direction, side-lobe levels, directivity, and cross-polarization are analyzed in detail with both simulations and radiation pattern measurements. As expected, the results show that the side-lobe and cross-polarization levels are not predicted accurately with large feed offsets using the ray-tracing simulations. Nevertheless, it is shown that the lens shape can be successfully optimized with the simple and fast ray-tracing simulations. The measured half-power beam-width at 77 GHz is 2.5°±0.2° up to the largest tested beam-steering angle of 30°. The optimized eccentricity low permittivity lens results in smaller scan loss than the conventional lenses.",
    author = "A. Karttunen and Jussi S{\"a}ily and Antti Lamminen and J. Ala-Laurinaho and R. Sauleau and A.V. R{\"a}is{\"a}nen",
    year = "2012",
    doi = "10.2528/PIERB12082911",
    language = "English",
    volume = "44",
    pages = "345--365",
    journal = "Progress In Electromagnetics Research B",
    issn = "1937-6472",
    publisher = "Electromagnetics Academy",

    }

    Using optimized eccentricity rexolite lens for electrical beam steering with inte-grated aperture coupled patch array. / Karttunen, A. (Corresponding Author); Säily, Jussi; Lamminen, Antti; Ala-Laurinaho, J.; Sauleau, R.; Räisänen, A.V.

    In: Progress In Electromagnetics Research B, Vol. 44, 2012, p. 345-365.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Using optimized eccentricity rexolite lens for electrical beam steering with inte-grated aperture coupled patch array

    AU - Karttunen, A.

    AU - Säily, Jussi

    AU - Lamminen, Antti

    AU - Ala-Laurinaho, J.

    AU - Sauleau, R.

    AU - Räisänen, A.V.

    PY - 2012

    Y1 - 2012

    N2 - Design and measurement results of a beam-steering integrated lens antenna at 77 GHz are presented. An 8-element LTCC aperture coupled patch antenna feed array with a switching network is used to electrically steer the main beam in H-plane. A 100-mm diameter Rexolite (εr = 2.53) lens is simulated and tested. The eccentricity of the lens is optimized in an earlier work with ray-tracing simulations for improved beam-steering properties compared to the conventional extended hemispherical and elliptical lenses. The beamsteering properties including scan loss, main-beam width and direction, side-lobe levels, directivity, and cross-polarization are analyzed in detail with both simulations and radiation pattern measurements. As expected, the results show that the side-lobe and cross-polarization levels are not predicted accurately with large feed offsets using the ray-tracing simulations. Nevertheless, it is shown that the lens shape can be successfully optimized with the simple and fast ray-tracing simulations. The measured half-power beam-width at 77 GHz is 2.5°±0.2° up to the largest tested beam-steering angle of 30°. The optimized eccentricity low permittivity lens results in smaller scan loss than the conventional lenses.

    AB - Design and measurement results of a beam-steering integrated lens antenna at 77 GHz are presented. An 8-element LTCC aperture coupled patch antenna feed array with a switching network is used to electrically steer the main beam in H-plane. A 100-mm diameter Rexolite (εr = 2.53) lens is simulated and tested. The eccentricity of the lens is optimized in an earlier work with ray-tracing simulations for improved beam-steering properties compared to the conventional extended hemispherical and elliptical lenses. The beamsteering properties including scan loss, main-beam width and direction, side-lobe levels, directivity, and cross-polarization are analyzed in detail with both simulations and radiation pattern measurements. As expected, the results show that the side-lobe and cross-polarization levels are not predicted accurately with large feed offsets using the ray-tracing simulations. Nevertheless, it is shown that the lens shape can be successfully optimized with the simple and fast ray-tracing simulations. The measured half-power beam-width at 77 GHz is 2.5°±0.2° up to the largest tested beam-steering angle of 30°. The optimized eccentricity low permittivity lens results in smaller scan loss than the conventional lenses.

    U2 - 10.2528/PIERB12082911

    DO - 10.2528/PIERB12082911

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    SN - 1937-6472

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