The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Estruturas de antenas menores para transmissores e receptores de radar de longo alcance operando na banda de 77 GHz para aplicação automotiva foram obtidas usando antenas com buzina, lente e antena de microfita. A altura da antena do transmissor (Tx) foi reduzida, mantendo o ganho da antena alto e o substrato da antena pequeno, desenvolvendo uma estrutura de antena composta por duas antenas diferenciais de chifre e lente em que o diâmetro e a distância de foco das lentes eram metade daqueles no projeto anterior . As antenas microfita são conectadas diretamente às saídas diferenciais de um circuito integrado monolítico de micro-ondas. Uma antena Tx fabricada com materiais comercialmente disponíveis tinha 14 mm de altura e abertura de saída de 18 × 44 mm. Alcançou um ganho de antena de 23.5dBi. O substrato da antena deve ter pelo menos 96 mm2. A antena tinha um feixe plano com elevação de meia potência e larguras de feixe azimutais de 4.5° e 21°, respectivamente. Um conjunto de antenas receptoras (Rx) composto por quatro conjuntos de antenas tipo corneta e lentes com uma abertura de saída de 9 × 22 mm e uma configuração de conjunto dois por dois foi fabricado para aplicação em um pequeno módulo frontal recentemente proposto com direção azimutal estimativa de chegada (DOA). O conjunto de antenas Rx tinha um acoplamento de antena inferior a -31dB na banda de 77 GHz, que é pequeno o suficiente para estimativa DOA por receptores de radar de onda contínua modulados em frequência, embora as quatro antenas estejam dispostas sem qualquer separação entre suas aberturas de saída. .
Akira KURIYAMA
Hitachi, Ltd.
Hideyuki NAGAISHI
Hitachi, Ltd.
Hiroshi KURODA
Hitachi Automotive Systems, Ltd.
Akira KITAYAMA
Hitachi, Ltd.
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Akira KURIYAMA, Hideyuki NAGAISHI, Hiroshi KURODA, Akira KITAYAMA, "Horn and Lens Antenna with Low Height and Low Antenna Coupling for Compact Automotive 77-GHz Long-Range Radar" in IEICE TRANSACTIONS on Electronics,
vol. E103-C, no. 10, pp. 426-433, October 2020, doi: 10.1587/transele.2020MMP0002.
Abstract: Smaller antenna structures for long-range radar transmitters and receivers operating in the 77-GHz band for automotive application have been achieved by using antennas with a horn, lens, and microstrip antenna. The transmitter (Tx) antenna height was reduced while keeping the antenna gain high and the antenna substrate small by developing an antenna structure composed of two differential horn and lens antennas in which the diameter and focus distance of the lenses were half those in the previous design. The microstrip antennas are directly connected to the differential outputs of a monolithic microwave integrated circuit. A Tx antenna fabricated using commercially available materials was 14mm high and had an output-aperture of 18×44mm. It achieved an antenna gain of 23.5dBi. The antenna substrate must be at least 96mm2. The antenna had a flat beam with half-power elevation and azimuth beamwidths of 4.5° and 21°, respectively. A receiver (Rx) antenna array composed of four sets of horn and lens antennas with an output-aperture of 9×22mm and a two-by-two array configuration was fabricated for application in a newly proposed small front-end module with azimuth direction of arrival (DOA) estimation. The Rx antenna array had an antenna coupling of less than -31dB in the 77-GHz band, which is small enough for DOA estimation by frequency-modulated continuous wave radar receivers even though the four antennas are arranged without any separation between their output-apertures.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2020MMP0002/_p
Copiar
@ARTICLE{e103-c_10_426,
author={Akira KURIYAMA, Hideyuki NAGAISHI, Hiroshi KURODA, Akira KITAYAMA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Horn and Lens Antenna with Low Height and Low Antenna Coupling for Compact Automotive 77-GHz Long-Range Radar},
year={2020},
volume={E103-C},
number={10},
pages={426-433},
abstract={Smaller antenna structures for long-range radar transmitters and receivers operating in the 77-GHz band for automotive application have been achieved by using antennas with a horn, lens, and microstrip antenna. The transmitter (Tx) antenna height was reduced while keeping the antenna gain high and the antenna substrate small by developing an antenna structure composed of two differential horn and lens antennas in which the diameter and focus distance of the lenses were half those in the previous design. The microstrip antennas are directly connected to the differential outputs of a monolithic microwave integrated circuit. A Tx antenna fabricated using commercially available materials was 14mm high and had an output-aperture of 18×44mm. It achieved an antenna gain of 23.5dBi. The antenna substrate must be at least 96mm2. The antenna had a flat beam with half-power elevation and azimuth beamwidths of 4.5° and 21°, respectively. A receiver (Rx) antenna array composed of four sets of horn and lens antennas with an output-aperture of 9×22mm and a two-by-two array configuration was fabricated for application in a newly proposed small front-end module with azimuth direction of arrival (DOA) estimation. The Rx antenna array had an antenna coupling of less than -31dB in the 77-GHz band, which is small enough for DOA estimation by frequency-modulated continuous wave radar receivers even though the four antennas are arranged without any separation between their output-apertures.},
keywords={},
doi={10.1587/transele.2020MMP0002},
ISSN={1745-1353},
month={October},}
Copiar
TY - JOUR
TI - Horn and Lens Antenna with Low Height and Low Antenna Coupling for Compact Automotive 77-GHz Long-Range Radar
T2 - IEICE TRANSACTIONS on Electronics
SP - 426
EP - 433
AU - Akira KURIYAMA
AU - Hideyuki NAGAISHI
AU - Hiroshi KURODA
AU - Akira KITAYAMA
PY - 2020
DO - 10.1587/transele.2020MMP0002
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E103-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 2020
AB - Smaller antenna structures for long-range radar transmitters and receivers operating in the 77-GHz band for automotive application have been achieved by using antennas with a horn, lens, and microstrip antenna. The transmitter (Tx) antenna height was reduced while keeping the antenna gain high and the antenna substrate small by developing an antenna structure composed of two differential horn and lens antennas in which the diameter and focus distance of the lenses were half those in the previous design. The microstrip antennas are directly connected to the differential outputs of a monolithic microwave integrated circuit. A Tx antenna fabricated using commercially available materials was 14mm high and had an output-aperture of 18×44mm. It achieved an antenna gain of 23.5dBi. The antenna substrate must be at least 96mm2. The antenna had a flat beam with half-power elevation and azimuth beamwidths of 4.5° and 21°, respectively. A receiver (Rx) antenna array composed of four sets of horn and lens antennas with an output-aperture of 9×22mm and a two-by-two array configuration was fabricated for application in a newly proposed small front-end module with azimuth direction of arrival (DOA) estimation. The Rx antenna array had an antenna coupling of less than -31dB in the 77-GHz band, which is small enough for DOA estimation by frequency-modulated continuous wave radar receivers even though the four antennas are arranged without any separation between their output-apertures.
ER -