Car Talk: Technologies for Vehicle-to-Roadside Communications

Cidronali, Alessandro; Maddio, Stefano; Passafiume, Marco; Manes, G.

doi:10.1109/mmm.2016.2600949

Cited by 34 publications

(19 citation statements)

References 33 publications

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“…A RFID-based DSRC system is basically realized by means of a RSU beacon reader, raised installed in order to guarantee sufficient visibility, and some OBU transponders. Moreover, antennas are constrained to radiate with circular polarization (CP) for two main reasons: CP reduces polarization mismatch due to reciprocal rotation between RSU and OBU devices and improves immunity to multipath effect [23]. The latter is a fundamental characteristic which guarantees the validity of a free space propagation loss model [21].…”

Section: Rfid-based Dsrc Systemmentioning

confidence: 99%

Array Pattern Synthesis for ETC Applications

Inserra¹

2019

Array Pattern Optimization

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The problem of antenna array synthesis for radiation pattern defined on a planar surface will be considered in this chapter. This situation could happen when the electric field r-decay factor effect cannot be neglected, for example, an antenna array mechanically tilted and a pattern defined in terms of Cartesian coordinates, as in the electronic toll collection (ETC) scenario. Two possible approaches will be presented: the first one aims at the precise synthesis of the pattern in the case both a constant power-bounded area and a sidelobe suppression region are defined and required to be synthesized. The second approach instead devotes at stretching the coverage area toward the travel length (without considering a precise definition of the communication area) to increase the available identification time with an iterative methodology. For the latter, an antenna prototype has been fabricated, and measurement results have confirmed the approach validity.

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Section: Rfid-based Dsrc Systemmentioning

confidence: 99%

Array Pattern Synthesis for ETC Applications

Inserra¹

2019

Array Pattern Optimization

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“…With reference to [2], for Electronic Toll Collection (ETC) applications, a typical mobile node is a very low-cost passive device, which operates in back-scattering, and its functioning is guaranteed by the impinging power from the Road-Side Unit. Therefore, the gain performance of the antenna is of paramount importance for communication success [3].…”

Section: Introductionmentioning

confidence: 99%

A Slotted Patch Antenna With Enhanced Gain Pattern for Automotive Applications

Maddio¹,

Pelosi²,

Righini³

et al. 2021

PIER Letters

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A single-layer via-less rectangular patch antenna for automotive applications in C-band is proposed. To match the needs of a vehicular dedicated short range communication protocol, the resonant edge of the antenna is enlarged to narrow the beamwidth in the H-plane, while at the same time a pair of thin slots serve as inhibitors for the higher modes, permitting adequate matching and polarization purity. The proposed single patch antenna presents a realized gain about 6.85 dB, H-plane beamwidth narrower than ±32 • , E-plane beamwidth larger than ±45.5 • , and return loss exceeding 20 dB with a 3 dB bandwidth of 500 MHz, with a minimum at 5810 MHz, hence suitable for coexistence of different communication standard in the C-band. Furthermore, its compact dimension permits the direct integration within a radio front-end.

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“…THE C‐band is a very popular frequency band for many applications: 802.11xy WiFi from 4.9 to 5.7 GHz, DSRC at 5.8 GHz, WAVE protocol at 5.9 GHz just to give few examples in the field of automotive communications . Yet, the new opportunity given by the novel protocols implies also the risk of massive congestion …”

Section: Introductionmentioning

confidence: 99%

“…THE C-band is a very popular frequency band for many applications: 802.11xy WiFi from 4.9 to 5.7 GHz, DSRC at 5.8 GHz, WAVE protocol at 5.9 GHz just to give few examples in the field of automotive communications. 1 Yet, the new opportunity given by the novel protocols implies also the risk of massive congestion. 2 To cope with the coexistence of many different protocols there are two solutions: active ones, such as leakage cancellers, [3][4][5] and passive ones, such as electronic bandagap, 6,7 or sharp roll-off filters.…”

Section: Introductionmentioning

confidence: 99%

Quasi‐elliptical band‐pass filters based on compact spiral resonators for C‐band applications

Cidronali

Collodi

Maddio

et al. 2019

Micro & Optical Tech Letters

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This letter proposes a quasi‐elliptical passband filter in via‐less microstrip technology. The filter is based on the Archimedean spiral, enabling a compact and low‐loss response with sharp transitions to stop bands. The developed filters fabricated on a commercial substrate, present losses below 2 dB within a 3 dB bandwidth of 500 MHz, and isolation exceeding 20 dB. Its extremely compact dimension, about 0.018 λ02, and the low‐cost of fabrication, permits the integration within compact front‐end PCB.

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Car Talk: Technologies for Vehicle-to-Roadside Communications

Cited by 34 publications

References 33 publications

Array Pattern Synthesis for ETC Applications

Array Pattern Synthesis for ETC Applications

A Slotted Patch Antenna With Enhanced Gain Pattern for Automotive Applications

Quasi‐elliptical band‐pass filters based on compact spiral resonators for C‐band applications

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