Horn and Lens Antenna with Low Height and Low Antenna Coupling for Compact Automotive 77-GHz Long-Range Radar

Kuriyama, Akira; Nagaishi, Hideyuki; Kuroda, Hiroshi; Kitayama, Akira

doi:10.1587/transele.2020mmp0002

Cited by 1 publication

(7 citation statements)

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“…The values of parameters related to are set as follows. is 22 × 9 × 1.67 mm 2 , because the aperture efficiency of the series-fed antenna is about 0.6 times that of the horn and lens antenna [18]. Suppose _ is 0.2 times .…”

Section: High-density Implementation Techniques For Lrr Using Horn and Lens Antennasmentioning

confidence: 99%

“…First, only an overview of the horn and lens antenna design is given here, because its details are described in a previous paper [16][17][18]. A horn and lens antenna consists of a one-patch antenna, pyramidal horn, and dielectric lens.…”

Section: High-density Implementation Techniques For Lrr Using Horn and Lens Antennasmentioning

confidence: 99%

“…In addition to the high gain performance of horn and lens antennas, we also focus on the high isolation performance [18]. There is little coupling between one-patch antennas because they are electrically isolated by the surrounding input aperture of the horn.…”

Section: High-density Implementation Techniques For Lrr Using Horn and Lens Antennasmentioning

confidence: 99%

“…Next, the effect of the high-density implementation techniques using the horn and lens antennas will be described. To simplify the discussion, the antenna area is set to the values used in the previous study [18]:…”

Section: High-density Implementation Techniques For Lrr Using Horn and Lens Antennasmentioning

confidence: 99%

“…Therefore, a technique is required to implement RF front-end with high density and compactness. To satisfy these requirements, we focus on the features of a horn and lens antenna developed in a previous study [16][17][18]. This antenna has high gain, high isolation, and high implementation flexibility.…”

Section: Introductionmentioning

confidence: 99%

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High-Density Implementation Techniques for Long-Range Radar Using Horn and Lens Antennas

Kitayama

Kuriyama

Nagaishi

et al. 2021

IEICE Trans. Electron.

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Long-range radars (LRRs) for higher level autonomous driving (AD) will require more antennas than simple driving assistance. The point at issue here is 50-60 % of the LRR module area is used for antennas. To miniaturize LRR modules, we use horn and lens antenna with highly efficient gain. In this paper, we propose two high-density implementation techniques for radio-frequency (RF) front-end using horn and lens antennas. In the first technique, the gap between antennas was eliminated by taking advantage of the high isolation performance of horn and lens antennas. In the second technique, the RF front-end including micro-strip-lines, monolithic microwave integrated circuits, and peripheral parts is placed in the valley area of each horn. We fabricated a prototype LRR operating at 77 GHz with only one printed circuit board (PCB). To detect vehicles horizontally and vertically, this LRR has a minimum antenna configuration of one Tx antenna and four Rx antennas placed in 2×2 array, and 30 mm thickness. Evaluation results revealed that vehicles could be detected up to 320 m away and that the horizontal and vertical angle error was less than +/-0.2 degrees, which is equivalent to the vehicle width over 280 m. Thus, horn and lens antennas implemented using the proposed techniques are very suitable for higher level AD LRRs.

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Section: High-density Implementation Techniques For Lrr Using Horn and Lens Antennasmentioning

confidence: 99%

Section: High-density Implementation Techniques For Lrr Using Horn and Lens Antennasmentioning

confidence: 99%

Section: High-density Implementation Techniques For Lrr Using Horn and Lens Antennasmentioning

confidence: 99%

Section: High-density Implementation Techniques For Lrr Using Horn and Lens Antennasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

High-Density Implementation Techniques for Long-Range Radar Using Horn and Lens Antennas

Kitayama

Kuriyama

Nagaishi

et al. 2021

IEICE Trans. Electron.

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Horn and Lens Antenna with Low Height and Low Antenna Coupling for Compact Automotive 77-GHz Long-Range Radar

Cited by 1 publication

References 10 publications

High-Density Implementation Techniques for Long-Range Radar Using Horn and Lens Antennas

High-Density Implementation Techniques for Long-Range Radar Using Horn and Lens Antennas

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