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

17 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

M3 - Article

VL - 44

SP - 345

EP - 365

JO - Progress In Electromagnetics Research B

JF - Progress In Electromagnetics Research B

SN - 1937-6472

ER -