A high efficiency antenna with horn and lens for 77 GHz automotive long range radar

Kuriyama, Akira; Nagaishi, Hideyuki; Kuroda, Hiroshi; Takano, Kaoru

doi:10.1109/eumc.2016.7824646

Cited by 17 publications

(13 citation statements)

References 3 publications

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“…At the time of writing, MMICs with three outputs for transmitter are commercially available. The design of ANT‐1 is described in the previous report . The technologies used to obtain ANT‐2 and ANT‐3 are explained in Section 3.…”

Section: Required Radiation Pattern and Proposed Architecture Of Tranmentioning

confidence: 99%

“…As for the wide beam, a half‐power beam width (HPBW) was ±40°, and the gain at angles of ±40° were 12 dBi to achieve the detection range of 60 m. However, the HPBW narrows in about half when the number of array antennas in the azimuth plane is increased to increase the antenna gain, in order to enlarge the detection range from 60 to 100 m by using the wide beam. Moreover, a series‐fed microstrip patch array antenna has limited antenna gain due to transmission loss in its long feed line in the 77‐GHz band, so it is hard to increase the antenna gain by extending the antenna size in the elevation plane.…”

Section: Introductionmentioning

confidence: 99%

“…The antenna has a high gain at boresight and a 6‐dB beam width of ±35°. We have now solved some of the problems with the horn and lens antenna , which comprise the base technology of the proposed structure, by newly designing a horn and lens antenna array with a prism that achieves a wide beam width. In this paper, we discuss the problems with the horn and lens antenna to apply it to a transmitter antenna for the dual‐range dual‐FOV radar and describe detailed design of the proposed antenna structure.…”

Section: Introductionmentioning

confidence: 99%

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Horn and lens antenna array with chevron‐shaped prism for 77‐GHz automotive radar with dual‐range sensing and a dual field of view

Kuriyama

Nagaishi

Kuroda

et al. 2019

IEEJ Transactions Elec Engng

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A transmitter antenna array composed of two horn and lens antennas sharing a novel chevron-shaped prism and one horn and lens antenna without such a prism has been investigated for 77-GHz-band automotive radar with dual-range sensing and a dual field-of-view (FOV). The horn and lens antenna without the prism is directed at boresight to produce a radiation pattern with a narrow FOV for long-range detection. The portions of the prism output surface corresponding to the two antennas that share the prism are angled in opposite directions to tilt their radiation patterns to the left and right and thereby provide a wide FOV in azimuth for middle-range detection. The prism created a smooth radiation pattern in the major lobe when the tilt angle was large enough to achieve an azimuth FOV of more than ±35 • . A fabricated transmitter antenna array achieved a gain of 21.5 dBi and a half-power beam width of 22 • at boresight for long-range detection and one of more than 15.5 dBi within azimuth angles of ±35 • for middle-range detection at 76.5 GHz. This antenna array for long-and middle-range detection had reflection coefficients (S11) of less than −14 and −17 dB, respectively, from 76 to 77 GHz. The antenna array thus produces the beams required for dual-range dual-FOV radar.

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Section: Required Radiation Pattern and Proposed Architecture Of Tranmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Horn and lens antenna array with chevron‐shaped prism for 77‐GHz automotive radar with dual‐range sensing and a dual field of view

Kuriyama

Nagaishi

Kuroda

et al. 2019

IEEJ Transactions Elec Engng

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“…Several antenna structures with a monolayer substrate with a low tan δ have been reported. A series‐fed microstrip patch array antenna is commonly used in current radars. An antenna with a gain of 22.5 dBi and an aperture efficiency of 53% were reported by using a substrate with a tan δ of 0.001 .…”

Section: Introductionmentioning

confidence: 99%

“…To solve the problems described above, the authors previously proposed an antenna structure composed of a pyramidal horn, dielectric lens, and horn‐to‐microstrip transition . The antenna had a high gain and small substrate.…”

Section: Introductionmentioning

confidence: 99%

Horn and lens antenna with a small antenna substrate and high production tolerance for 77‐GHz automotive long‐range Radar

Kuriyama

Nagaishi

Kuroda

2019

IEEJ Transactions Elec Engng

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An antenna composed of a pyramidal horn and a dielectric lens with a small antenna substrate and high production tolerance for 77‐GHz long‐range radar was investigated. By employing a new horn‐to‐microstrip transition with a single microstrip antenna incorporated in the input aperture of the pyramidal horn, the antenna could be connected to monolithic microwave‐integrated circuits (MMICs) using a microstrip line. This structure enables integration of the antenna and MMICs on the same surface of an antenna substrate, which reduces material and production costs. A fabricated antenna had an antenna gain of 23.5 dBi, where the size of the antenna substrate was less than 20 × 20 mm. The antenna had half‐power beamwidths of 4.5° and 16° in elevation and azimuth, respectively. Moreover, the horn‐to‐microstrip transition was designed to provide robustness against misalignment of the horn and the microstrip antenna due to mechanical deviation during mass production. Measurement results showed that the antenna gain was degraded by less than 0.2 dB and that the beam was tilted less than 0.6° and 0.7° in elevation and azimuth, respectively, where the horn was misaligned to the microstrip antenna by 0.1 mm. © 2019 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Analytical design of wideband dielectric polygonal directional beam antennas

Nasrollahi,

Keshtkar,

Taskhiri

2023

Opt Quant Electron

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A high efficiency antenna with horn and lens for 77 GHz automotive long range radar

Cited by 17 publications

References 3 publications

Horn and lens antenna array with chevron‐shaped prism for 77‐GHz automotive radar with dual‐range sensing and a dual field of view

Horn and lens antenna array with chevron‐shaped prism for 77‐GHz automotive radar with dual‐range sensing and a dual field of view

Horn and lens antenna with a small antenna substrate and high production tolerance for 77‐GHz automotive long‐range Radar

Analytical design of wideband dielectric polygonal directional beam antennas

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