Quarter-Wave Balun Fed Vivaldi Antenna Pair for V2X Communication Measurement

Dzagbletey, Philip Ayiku; Shim, Jae-Yeon; Chung, Jae‐Young

doi:10.1109/tap.2019.2893201

Cited by 42 publications

(20 citation statements)

References 11 publications

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“…e identification of multiple accident sections is based on the safety of sections to determine the dangerous sections of highways. At present, the identification methods of road sections with multiple traffic accidents mainly include the following categories: (1) applying traffic conflict analysis technology [27]. It judges the possible traffic conflict points by predicting the running track of vehicles and judges the more serious traffic conflicts as the road section with frequent accidents.…”

Section: Related Workmentioning

confidence: 99%

“…e Vehicle-to-Everything (V2X), which is the information exchange between vehicular systems and the outside world of information exchange, is a critical technology for future intelligent transportation systems. V2X enables vehicles, base stations, and infrastructure to obtain real-time traffic information, road information, and pedestrian information [1]. V2X improves safety, reduces congestion, improves traffic efficiency, and provides on-board entertainment information [2].…”

Section: Introductionmentioning

confidence: 99%

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STEIM: A Spatiotemporal Event Interaction Model in V2X Systems Based on a Time Period and a Raster Map

Luo

Bao

et al. 2020

Mobile Information Systems

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e Internet of Vehicles (IoV) is an important artificial intelligence research field for intelligent transportation applications. Complex event interactions are important methods for data flow processing in a Vehicle to Everything (V2X) environment. Unlike the classic Internet of ings (IoT) systems, data streams in V2X include both temporal information and spatial information. us, effectively expressing and addressing spatiotemporal data interactions in the IoV is an urgent problem. To solve this problem, we propose a spatiotemporal event interaction model (STEIM). STEIM uses a time period and a raster map for its temporal model and spatial model, respectively. In this paper, first, we provide a spatiotemporal operator and a complete STEIM grammar that effectively expresses the spatiotemporal information of the spatiotemporal event flow in the V2X environment. Second, we describe the design of the operational semantics of the STEIM from the formal semantics. In addition, we provide a spatiotemporal event-stream processing algorithm that is based on the Petri net model. e STEIM establishes a mechanism for V2X event-stream temporal and spatial processing. Finally, the effectiveness of the STEIM-based system is demonstrated experimentally.

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Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

STEIM: A Spatiotemporal Event Interaction Model in V2X Systems Based on a Time Period and a Raster Map

Luo

Bao

et al. 2020

Mobile Information Systems

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“…Dual-polarized Vivaldi antennas are generally realized by orthogonally inserting two Vivaldi elements into each other, forming a cross shape [ 20 , 21 , 22 , 23 , 24 ]. The feeding lines of the elements need to be slightly shifted to avoid their intersection and to improve port isolation.…”

Section: Introductionmentioning

confidence: 99%

“…The feeding lines of the elements need to be slightly shifted to avoid their intersection and to improve port isolation. Microstrip-to-slot balun [ 22 ] and two-stage quarter-wave balun [ 23 ] have been used to achieve a broad bandwidth. An ultra-lightweight dual-polarized antenna design was developed using glass fiber-reinforced epoxy with copper layers [ 24 ].…”

Section: Introductionmentioning

confidence: 99%

Compact Dual-Polarized Vivaldi Antenna with High Gain and High Polarization Purity for GPR Applications

Sun

Lee

Luo

et al. 2021

Sensors

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A compact ultra-wideband dual-polarized Vivaldi antenna is proposed for full polarimetric ground-penetrating radar (GPR) applications. A shared-aperture configuration comprising four Vivaldi elements for orthogonal polarizations is designed to reduce the low-end operating frequency and improve the port isolation with a compact antenna size. The directivity of the antenna is enhanced by the oblique position of the radiators and the implementation of a square loop reflector. Experimental results demonstrate that the antenna has very good impedance matching, port isolation, and dual-polarized radiation performance, with low dispersion characteristics across band of interest from 0.4 GHz to 3.0 GHz. GPR measurements with the designed antenna show that the antenna maintains good detection capability even for objects buried in a highly conductive soil.

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“…Baluns are essential components for numerous applications such as antenna feed networks, differential mixers, high efficiency power amplifiers, differential amplifiers, and the conventional interface between unbalanced and balanced structures, etc 1‐3 . However, the design of a miniaturized balun that covers a wide frequency range is quite challenging, especially in the 300 MHz to 3 GHz band that is used for various applications like satellites, pagers, Wi‐Fi, Bluetooth, television broadcasting, and some mobile transmission bands.…”

Section: Introductionmentioning

confidence: 99%

A compact wideband balun design using double‐sided parallel strip lines with over 9:1 bandwidth

Tamjid

Thomas

Fathy

2020

Int J RF Microw Comput Aided Eng

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A simplified miniaturized wideband balun design covering (0.38-3.5 GHz) is presented. The broadband balun structure occupies a small area of 20.7 mm × 20.8 mm. The balun is designed using low loss double-sided parallel strip lines and is comprised of a two-stage Wilkinson divider followed by loading, symmetrically, the two output ports. One port with a phase inverter circuit; while a very similar but non-inverting circuit is placed in the other port for loading-balance compensation. To realize the balun's function, different smooth transitions have been employed and were accounted for. The fabricated balun circuit demonstrated phase and amplitude imbalance of less than ±5 and ± 0.4 dB, respectively, over the band.

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Quarter-Wave Balun Fed Vivaldi Antenna Pair for V2X Communication Measurement

Cited by 42 publications

References 11 publications

STEIM: A Spatiotemporal Event Interaction Model in V2X Systems Based on a Time Period and a Raster Map

STEIM: A Spatiotemporal Event Interaction Model in V2X Systems Based on a Time Period and a Raster Map

Compact Dual-Polarized Vivaldi Antenna with High Gain and High Polarization Purity for GPR Applications

A compact wideband balun design using double‐sided parallel strip lines with over 9:1 bandwidth

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