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News Article | December 8, 2016

GRENOBLE, France & LYON, France--(BUSINESS WIRE)--The Auvergne-Rhône-Alpes region will send a record delegation of 37 startups to CES Las Vegas on January 5–8. CES is the world’s premier consumer electronics event, and the Auvergne-Rhône-Alpes regional delegation will be France’s largest—evidence of the region’s pole position in digital technology. The 37 startups exhibiting at the 50th annual CES offer a broad range of innovative products for sports, entertainment, the environment, and health and wellness. Ten of the companies exhibiting have already won CES Innovation Awards. The awards are given to the year’s most remarkable innovations, and confirm the caliber and potential of the winning companies. The region’s delegation will be led by the Minalogic digital technology cluster and the Auvergne region’s economic development agency, ARDE. The trip is financed in part by the Auvergne-Rhône-Alpes regional government and the European Union in partnership with clusters Imaginove, Clust’R Numérique, and Numélink. Representatives of manufacturing companies like SEB and STMicroelectronics and elected officials will round out the delegation, which is expected to count nearly 200 people. Helping startups get the most out of the event through targeted support CES Las Vegas is a strategic event for participating companies. To ensure that all of the exhibitors are able to take advantage of the business opportunities available, Minalogic and ARDE offered targeted support over several months in the run-up to the event. The “On the Road to CES” program featured six workshops covering the elevator pitch, social media, exhibit booth design, media relations, regulatory issues, and business intelligence. And the support will continue during the event. Minalogic and ARDE will be on hand to actively facilitate introductions between the region’s startups and international investors and contacts from major corporations. “The Auvergne-Rhône-Alpes region, as one of France’s leading regions for digital technologies, is home to one of Europe’s most dynamic digital ecosystems. With the support of Minalogic and ARDE, the region is gearing up to showcase some fantastic technologies. Our startups will do us proud at CES. They are true innovators and entrepreneurs and they will show that the Auvergne-Rhône-Alpes region is a hub for innovation coordinated by some remarkable clusters,” said Auvergne-Rhône-Alpes Region President Laurent Wauquiez. See the full list of companies from the Auvergne-Rhône-Alpes region exhibiting at CES 2017 Keep up with the Auvergne-Rhône-Alpes delegation’s latest CES news before and during the event on social networks by following the hashtag: #TheTechRegionAtCES

Krishna R.V.S.R.,University of Pune | Kumar R.,ARDE
IEEE Antennas and Wireless Propagation Letters | Year: 2016

In this letter, a dual-polarized slot antenna for ultrawideband (UWB) applications is proposed. The slot has an overall shape of a square ring whose four arms are identical and stepped rectangular. While two adjacent arms of the ring are microstrip-fed and are responsible for the orthogonally polarized fields, the other two arms are introduced to make the structure symmetric and reduce the cross polarization. The impedance matching and isolation are controlled by properly shaping the slot arms and the feed section and by insertion of narrow metallic and slot stubs. The measured impedance bandwidth is 120% (3.0-12.0 GHz). The isolation is better than 20 dB over most of the band. With the help of radiation patterns and aperture electric field distribution, the dual-polarized nature of the antenna is justified. The antenna will be useful for UWB multiple-input-multiple-output (MIMO) transmission, polarimetric radar, and medical imaging applications. © 2002-2011 IEEE.

Krishna R.V.S.R.,University of Pune | Kumar R.,ARDE
IET Microwaves, Antennas and Propagation | Year: 2016

A square ring shaped planar slot antenna for dual-polarised applications is presented and experimentally investigated. Each arm of the slot has a stepped rectangular section. Two of the adjacent arms are excited using microstrip feed lines printed on the other side of the substrate. To improve the isolation, a kite shaped slot stub is placed at the centre of the ring and is connected to one of its corners. The antenna has an impedance bandwidth from 3.0 to 12.0 GHz while the isolation is better than 20 dB. The dual polarisation is demonstrated by means of an aperture electric field plot. The antenna has a peak gain varying from 4 to 6 dBi. To check the diversity performance, the envelope correlation coefficient is calculated and found to be within the threshold limit. The antenna will be useful for applications requiring dual polarisation over the ultra-wide bandwidth with good isolation. © The Institution of Engineering and Technology.

Naidu P.V.,Symbiosis International University | Kumar R.,ARDE
Journal of Microwaves, Optoelectronics and Electromagnetic Applications | Year: 2015

A compact (20 × 20 mm2 size), coplanar waveguide (CPW) fed, octagonal slotted, dual-band antenna is presented in this paper. The proposed antenna has a simple structure consisting of an octagonal slot, L-shape stub, and a two stepped rectangular patch. The introduction of the L-shaped metallic stubs in the ground plane generates a lower resonance frequency at 2.42 GHz. The proposed antenna is fabricated on a low cost FR4 substrate having thickness of 1.6 mm. The measured impedance bandwidth of the proposed antenna is from 2.40 to 2.46 GHz and 3.2 to 6.2 GHz. It is also shown that the proposed antenna has stable radiation patterns of almost dumb-bell shape in the E-plane and omni-directional shape in the H-plane. The effects of various design parameters on the impedance bandwidth are also studied and presented in detail. The proposed antenna can be used for 3.5/5.5 GHz worldwide interoperability for microwave access (WiMAX), 2.4/5.2/5.8 GHz wireless local area network (WLAN) and 3.1-6.0 GHz Direct-Sequence Code Division Multiple Access (DS-CDMA)/Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) ultra wideband (UWB) applications. Copyright © 2015 SBMO/SBMag.

Krishna R.V.S.R.,DIAT DU | Kumar R.,ARDE
Journal of Electromagnetic Waves and Applications | Year: 2016

A V-shape slot antenna for dual slant polarization is proposed. The slot is the union of two stepped rectangular slots tilted at ±45° with the vertical. Each section of the slot is excited using a microstrip feed line printed on the other side of the substrate. The feed is also stepped and bent so as to cross the slot at right angles. The decoupling between the ports is provided by means of narrow rectangular stubs placed at the intersection of the slot arms. Measurements taken on the fabricated prototype indicate an impedance bandwidth from 3.3 to 12 GHz with isolation better than 15 dB across the band. The aperture electric field distributions as well as far field radiation patterns are used to verify the dual slant polarization achieved with the antenna. The time domain characterization of the antenna is done by calculating the fidelity factor which is found to be >0.75 indicating suitability of the antenna for pulse transmission. For determining the diversity behavior, the envelope correlation coefficient is calculated and found to be below 0.004. The antenna has a peak gain from 4 to 6 dBi. A modified design of the antenna is also presented with impedance bandwidth from 3 to 12 GHz and isolation better than 20 dB from 3.7 GHz onwards. With compact features and wideband return loss and isolation, the antennas are expected to be useful for diversity applications in ultra wideband communication devices such as MIMO wifi, imaging radars, and polarimetric sensing devices. © 2016 Informa UK Limited, trading as Taylor & Francis Group

Kumar R.,ARDE | Naidu P.V.,Symbiosis International University | Kamble V.,DIAT DU
Progress In Electromagnetics Research B | Year: 2014

A compact, coplanar waveguide (CPW) fed asymmetric slot antenna with dual operating bands is proposed. The slot is modi-ed rectangular in shape and asymmetrically cut in the ground plane. A hexagonal patch fed by a two-step CPW is used to excite the slot. The feed itself is slightly asymmetric (shifted, with unequal ground planes). The asymmetric cuts on the slot together with the feed line asymmetry have helped in obtaining ultra wideband impedance matching. An extra resonance at 2.4 GHz for Bluetooth applications is obtained by cutting an additional meandered narrow rectangular shape slit in the ground plane. The prototype of the proposed antenna has been fabricated and tested. The measured 10 dB return loss bandwidth of the proposed antenna is 200MHz (2.3-2.5 GHz) for the -rst band and 12.1 GHz (2.9-15.0 GHz) for the second band. The radiation patterns of the proposed antenna are obtained and found to be Omni-directional in H-plane and bi-directional in E-plane. The measured and simulated results are in good agreement.

Naidu P.V.,Symbiosis International University | Kumar R.,ARDE
Microsystem Technologies | Year: 2016

In this paper, a compact tri-band monopole antenna with asymmetric coplanar strip (ACS)-fed structure is proposed for long term evolution (LTE), Wireless Broadband (WiBro), Worldwide Interperability for Microwave Access (WiMAX), wireless local area network (WLAN) and 4.9 GHz public safety applications. The proposed antenna consists of an F-shaped radiating element along with a meanderd line structure, which occupy a compact size of 10 × 17.5 mm2 including the ground plane. The desired resonant frequencies at 3.5/5.5 GHz for WiMAX and 5.2/5.8 GHz WLAN can be achieved by properly selecting the length of the two horizontal branches in F-shaped patch and by introducing a meanderd line structure, another desired resonant frequency at 2.3 GHz for LTE/WiBro has been achieved. A prototype of the proposed antenna is designed, fabricated and validated experimentally. The measured results demonstrate that the proposed antenna has −10 dB impedance bandwidth of 120 MHz (2.3–2.42 GHz), 450 MHz (3.3–3.75 GHz), and 1500 MHz (4.5–6.0 GHz) along with good onmi-directional radiation patterns and acceptable peak gains in all the three operating bands. © 2015, Springer-Verlag Berlin Heidelberg.

Naidu V.P.,Symbiosis International University | Kumar R.,ARDE
Wireless Personal Communications | Year: 2015

Two compact rupee shaped coplanar waveguide (CPW) fed monopole antennas for WLAN and WiMAX applications are proposed. One of the antennas has a dual band characteristic (measured impedance bandwidth from 2.92–3.7 and 4.6–6.0 GHz) while the other has a triple band characteristic (measured impedance bandwidth from 1.97–2.15, 2.82–3.45 and 4.35–6.0 GHz). Both the proposed antennas measure 17.5×17.5×1.6 mm3 in dimensions. The basic radiating element in both the antennas is a rupee shape patch fed by a CPW. The dual frequency band operation is obtained by attaching an additional horizontal L-shape strip. The third frequency band is generated by the introduction of a meander shape strip on one side of the patch. The details of the antenna design along with simulated and experimental results are presented and discussed. The two antennas show nearly omnidirectional radiation patterns in the H-plane and bidirectional radiation patterns in the E-plane with moderate gain in the operating bands. The compact features, simple feeding technique and monopole design make them suitable for portable communication devices. © 2014, Springer Science+Business Media New York.

Parkhi P.,ARDE | Bandyopdhyay B.,Indian Institute of Technology Bombay | Jha M.,ARDE
Journal of the Franklin Institute | Year: 2014

Robustness to unmatched parametric uncertainty is prime requirement of roll control algorithm, especially when it is modelled in discrete time domain and implemented through on-board processor. Sliding mode control is a well established nonlinear control technique, which ensures a robust performance in presence of matched uncertainties and disturbances. In case of the discrete version of sliding mode control, due to finite operational sampling frequency, the system trajectories cannot be forced to slide on the switching manifold. The trajectories remain confined to certain domain around the sliding surface and this is known as Quasi Sliding Mode (QSM) motion. The bound of QSM decides the accuracy and performance of the discrete version of sliding mode. By design, the discrete-time sliding modes are robust to the matched bounded perturbations, however, unmatched perturbations directly affect the boundary layer width and hence the performance of the system. In the present paper, discrete time Lyapunov inequality based sliding hyperplane is designed, which enables robustness to unmatched perturbations arising due to uncertain system matrix A. Further, the requirement of full state-vector for the design of control and sliding surface is met through the multi-rate output feedback (MROF). This control strategy is then demonstrated with application to roll position control of missile with a bandwidth limited actuator. © 2013 The Franklin Institute.

Kushwaha N.,Research Scholar DIAT DU | Kumar R.,ARDE
Journal of Microwaves, Optoelectronics and Electromagnetic Applications | Year: 2014

In this paper, single and dual band EBG structures for wider bandwidth are proposed. In each of the discussed EBGs, a metallic patch of regular geometry is chosen for the unit element. The patch is further modified by cutting slots to get extra inductance and capacitance which results into lower cut-off frequency and larger bandwidth. The proposed EBG structures are compared with the standard mushroom type EBG with respect to surface wave attenuation. The-20 dB cut-off frequencies and bandwidths of the various EBGs are compared. The effect of unit element size, gap between unit elements and via diameter on the transmission response is presented. Among the discussed EBGs, the swastika type structure is compact, single band and has wider bandwidth. The square patch with a single disconnected loop type slot EBG and the Fractal EBG are dual band. While square patch is more compact, the fractal EBG has wider bandwidth. All the EBGs can be useful in the design of antenna and other microwave circuits. © 2014 SBMO/SBMag.

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