Compact ETSI compliant DSRC transponder for vehicular communications at 5.8 GHz

Maddio, Stefano; Cidronali, Alessandro; Maurri, Stefano; Manes, G.

doi:10.1109/mikon.2012.6233525

Cited by 6 publications

(7 citation statements)

References 21 publications

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“…A front-end for an ETSI complaint OBU based on on this approach was proposed by the authors in [3]. However, for cheap lossy substrate -such as FR4 -it is difficult to exceed 4 dB of gain.…”

Section: Transponder Conversion Analysismentioning

confidence: 99%

“…This is due to the extremely low DC power consumption requirements that makes unsuitable the use of even lowpower consumption local oscillator [2]. While OBU passive transponder front-end design based on antenna pair are already available [3], the solutions based on a single antenna are more convenient for the sake of device compactness, [4], [5]. Single antenna front-end operation is based on the Back-scattering mechanism, where a RF diode operates the frequency conversion with the receivingtransmitting antenna [6].…”

Section: Introductionmentioning

confidence: 99%

“…In the down-link (DL), the RSU sends messages by an amplitude shift keying (ASK) modulated carrier; the OBU front-end operates as an envelope detector, while the OBU base-band processor decodes the demodulated waveform into a bit stream. In the up-link (UL), the OBU semi-passive transponder front-end works as a back-scatterer, [3], [7], impressing a BPSK modulated sub-carrier onto the received carrier by an ASK modulation. The native integration of antenna and diode avoids both power loss and spurious radiation which can be severe operating at the central frequency of 5.8 GHz, especially considering lossy substrates such as FR4.…”

Section: Introductionmentioning

confidence: 99%

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Compact transponder front-end with enhanced gain for electronic toll collection at 5.8 GHz

Maddio

Cidronali

Passafiume

et al. 2015

2015 European Microwave Conference (EuMC)

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Abstract-In this paper we present a compact semi-passive front-end designed for Dedicated Short Range Communication (DSRC) at 5.8 GHz for vehicular technology applications. The front-end implementation is based on the optimal integration of a low-bias RF diode and a compact circular polarized antenna array.The antenna array natively exhibits the optimum termination to the diode, ensuring the best trade-off between detection and back-scattering on the basis of frequency conversion mechanism. The antenna is characterized by enhanced gain and polarization purity while extremely compact, hence particularly suitable for tag integration.The fabricated prototype is tested in envelope detection, backscattering and in a functional test conducted according to the ETSI EN300674 communication layer. The best measured BackScattering gain exceeds 7.8 dB, with a sensitivity of 54 mVpp with a signal of -45 dBm. A range at 9 m without communication errors is observed when operating with a EIRP of 33 dBm.

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Section: Transponder Conversion Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Compact transponder front-end with enhanced gain for electronic toll collection at 5.8 GHz

Maddio

Cidronali

Passafiume

et al. 2015

2015 European Microwave Conference (EuMC)

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“…The difficulties of the ITS-DSRC coexistence are caused by characteristic of the radio link between the Road-Side Unit (RSU) and the OnBoard Unit (OBU) for ETC applications. The OBU is a semipassive RFID-like device, hence it is not equipped with a local oscillator [2], [3]. Thus, upon the reception of the CW signal from the RSU, it over-imposes its payload by a back-scattering technique; in this process the carrier is ASK modulated with a BPSK modulated sub-carrier.…”

Section: Introductionmentioning

confidence: 99%

Interference cancellation for the coexistence of 5.8 GHz DSRC and 5.9 GHz ETSI ITS

Maddio

Cidronali

Passafiume

et al. 2015

2015 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM)

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Abstract-In this paper we analyze the cancellation of the interference caused by a Intelligent Transportation Systems (ITS) on devices operating in the Dedicated Short Range Communications (DSRC) framework. The cancellation is operated by an interference canceller based on the active feed-forward architecture. The canceller is designed to operate over the frequency band 5.2 GHz -6.4 GHz, hence it is suitable for the mitigation of mutual interference on signal pertinent to DSRC at 5.8 GHz due to ITS signals at 5.9 GHz. When applied to a Road Side Unit (RSU) for electronic toll collection (ETC) operating at 5.8 GHz, the proposed technique is capable to improve the performance of the front-end by cancelling the interfering signal in the 5.9 GHz bandwidth such as IEEE 802.11p signals involved in the ITS protocols; signal-to-interference improvement of 25 dB operating on 10 MHz bandwidth signal is herein reported. The paper introduces the architecture of the canceller as well as the experimental results which describe the capability of the technical approach.

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“…Recently, Ref. proposed a clever‐designed, single‐layer, circularly polarized patch antenna which makes use of coupled parasitic radiators to improve gain at the expense of a larger footprint. However, in Ref.…”

Section: Introductionmentioning

confidence: 99%

Compact single-layer circularly polarized antenna for short-range communication systems

Leonardi

Pavone

Sorbello

et al. 2014

Microw. Opt. Technol. Lett.

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the CF currents are much smaller than the DF ones for all the frequencies, which agrees with the quasistatic feature of the CSSR. Second, the resonance of the CSSR satisfies the Lorentz oscillator model. Consequently, both the CF and DF currents reach their maxima as illustrated in Figures 4(d) and 4(e). Additionally, the DF currents at the right-hand side lead undoubtedly confirm the band stop feature of the CSSR. Third, the CF currents corresponding to the capacitive response of the CSSR are concentrated at the air slot regions of A and C denoted in Figures 4(a). While the DF currents in Figures 4(c) and 4(e) corresponding to the inductive response of the CSSR are trapped at the metallic strip region B denoted in Figure 4(a). Interestingly, the peaks of the CF currents tunnel from the region A to the region C as the frequency increases as shown in Figures 4(b), (d), and 4(f). In comparison with the outer air slot related to the region A, the inner one related to the region C has smaller capacitance value. CONCLUSIONAn IE-based rigorous HD process is proposed to extract and analyze the EM field. It provides much clearer insight into field coupling and radiation mechanisms. Compared to the loop-tree based decomposition, it is rigorous and frequency-independent. This method provides a novel angle and a powerful postprocessing facility to reproduce and understand the complex EM responses for EMI/EMC, antennas, SI, and other areas.ABSTRACT: Dedicated short-range communications (DSRCs) is a short-to-medium range wireless protocol designed for automotive systems. This article describes the development of a one-layer compact lefthand circularly polarized antenna with a footprint and characteristics suitable for on-board-unit antenna of a DSRC system. The size of the developed prototype is 40 3 40 3 1.55 mm 3 and exhibits a circularly polarized gain of about 4.68 dBc with a cross polarization discrimination of about 22.5 dB.

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Compact ETSI compliant DSRC transponder for vehicular communications at 5.8 GHz

Cited by 6 publications

References 21 publications

Compact transponder front-end with enhanced gain for electronic toll collection at 5.8 GHz

Compact transponder front-end with enhanced gain for electronic toll collection at 5.8 GHz

Interference cancellation for the coexistence of 5.8 GHz DSRC and 5.9 GHz ETSI ITS

Compact single-layer circularly polarized antenna for short-range communication systems

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