A Telematics System Using In-Vehicle UWB Communications

Zuazola, Ignacio J. Garcia; Elmirghani, Jaafar M. H.; Batchelor, John C.

doi:10.5772/24694

Cited by 3 publications

(2 citation statements)

References 12 publications

(6 reference statements)

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“…An ECC of <0.5 is an acceptable limit to be considered [14]. The ECC of the proposed antenna was evaluated using the far-field equation (2). The ECC in the UWB operating range is less than 0.004, as shown in Figure 9a.…”

Section: Mimo Antenna Performancementioning

confidence: 99%

“…The automobile industry has shown increased interest in various electronic integration issues [1], such as above-ground antennas, reduced cable lengths, passenger safety, and remote keyless entry based on vehicular-to-everything communication, in order to improve road safety, traffic-less movement, reliability, and efficiency. The unlicensed frequency bands of 2.4 GHz and 5.470-5.725 GHz benefit intelligent transportation systems (ITS), while a frequency band of 3.168-4.752 GHz offers multipath immunity for fast-moving vehicles in densely populated areas [2]. MIMO/diversity technology with a high data rate can be used for modern automotive communication to improve the link reliability of the communication system [3].…”

Section: Introductionmentioning

confidence: 99%

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Design and Performance Analysis of a Compact Quad-Element UWB MIMO Antenna for Automotive Communications

et al. 2021

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This paper presents the design and analysis of a planar ultra-wideband (UWB) multiple-input-multiple-output (MIMO) antenna for modern vehicular communication systems. The proposed unit cell antenna structure was designed using modified elliptical radiators on a Rogers RO3003 substrate, has a size of 22 × 22 × 0.76 mm3, and covers an impedance bandwidth (S11 ≤ −10 dB) of 3.14 GHz to 12.24 GHz. The peak gain and efficiency of the unit cell prototype are 5.1 dBi and 81%, respectively. The unit cell was further developed into a MIMO antenna configuration with four elements placed orthogonal to each other in a single plane measuring 50 × 50 × 0.76 mm3. The measured isolation between the antenna elements was greater than 20 dB. The measured envelope correlation coefficient (ECC) of the MIMO antenna was less than 0.004, the diversity gain (DG) was greater than 9.67 dB, the total active reflection coefficient (TARC) was <−10 dB, and the mean effective gain (MEG) ratio was > 0.99. The characteristics of the proposed unit cell and the MIMO antenna were investigated for housing effects in order to validate the consistent performance of the antenna in the presence of conducting bodies. In addition, the radiation characteristics of the antenna when mounted on a vehicle were analyzed using a virtual model of the car. The results show that the proposed quad-element UWB MIMO array is compact, has good performance, and is well-suited for automotive applications.

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Section: Mimo Antenna Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Performance Analysis of a Compact Quad-Element UWB MIMO Antenna for Automotive Communications

et al. 2021

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An IoT‐based Framework for PUC Monitoring of 2‐ or 4‐Wheeler Vehicle

Ghosh,

Paul,

Karishma

et al. 2024

Smart Sensors for Industry 4.0

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Compact UWB Monopole Antenna for Automotive Communications

Alsath¹,

Kanagasabai²

2015

IEEE Trans. Antennas Propagat.

235

140

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This communication presents a bandwidth enhanced, compact, monopole antenna with modified ground plane for modern automotive ultra wide-band (UWB) applications. The proposed antenna has hybrid geometry and is constructed using half circular ring and half square ring. The ground plane of the fundamental radiator is curved and defected to improve the VSWR bandwidth. An extended ground stub is added to further enhance the bandwidth to suit the modern automotive requirements. The designed antenna covers 3.1 -10.9 GHz frequency spectrum with VSWR ≤ 2. This antenna can be conveniently placed inside the shark fin housing or it can be printed along with the existing Print Circuit Board (PCB) electronics nullifying the need for dedicated location for in-car communications. Furthermore, a simple 2 port Multiple Input Multiple Output (MIMO) antenna is constructed and its diversity performance is estimated. The prototype is fabricated and tested for impedance and radiation characteristics. Index Terms -UWB, printed antennas, wideband antennas, multi-service, automotive communications, MIMO I. INTRODUCTIONWING to the rapid development in wireless communication technologies, modern cars are fitted with multitude of information and communication systems. These systems are aimed at providing an enhanced service to the motorway users during mobility. The fast moving passenger devices undergo severe impairments in data rate and link quality due to multipath propagation and frequent cell handovers [1]. The severity is dictated by the speed of the vehicle and cell size. The conventional narrow-band systems may fail under such scenario since the performance of these communication systems is highly sensitive to transmitter and receiver locations [1]. Thus, to overcome the effects of mobility and achieve highest data rate, modern automobiles utilize UWB technology and MIMO/diversity techniques [2 -3]. The integration of MIMO/diversity with UWB further increases the robustness of the communication system.The UWB technology is also dedicated for in-car communications since the metallic body and the presence of passengers/load lead to complex propagation characteristics. The UWB technology is capable of handling these challenges for reliable functionality of the wireless systems [2]. Some of the potential applications of UWB include high speed mobile communications, in-car sensor network communication, automotive localization and tracking with high spatial resolution, emergency services and roadside assistance [1 -2].The antennas form the integral part of any communication system. In automobiles, the number of installed antenna increases with increase in the number of services offered by the vehicle which further increases while adopting MIMO/diversity techniques. Therefore, compact antennas operating over a large frequency spectrum receive special attention among automotive antenna designers.0018-926X (c)

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A Telematics System Using In-Vehicle UWB Communications

Cited by 3 publications

References 12 publications

Design and Performance Analysis of a Compact Quad-Element UWB MIMO Antenna for Automotive Communications

Design and Performance Analysis of a Compact Quad-Element UWB MIMO Antenna for Automotive Communications

An IoT‐based Framework for PUC Monitoring of 2‐ or 4‐Wheeler Vehicle

Compact UWB Monopole Antenna for Automotive Communications

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