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Your search keyword '"Université de Nantes (UN)-Université de Rennes 1 (UR1)"' showing total 11 results
Start Over Author "Université de Nantes (UN)-Université de Rennes 1 (UR1)" Journal international journal of antennas and propagation
11 results on '"Université de Nantes (UN)-Université de Rennes 1 (UR1)"'

1. Sub-THz Antenna for High-Speed Wireless Communication Systems

Author

Majeed A. S. Alkanhal, Hamsakutty Vettikalladi, Mohamed Himdi, Ahmad Fauzi Abas, Waleed Tariq Sethi, Wonsuk Ko, King Saud University [Riyadh] (KSU), Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Deanship of Scientific Research, King Saud University [RG-1439-028], Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Nantes Université (NU)-Université de Rennes 1 (UR1)

Subjects
High-gain antenna, Article Subject, High data rate, Computer science, Terahertz radiation, 020208 electrical & electronic engineering, Bandwidth (signal processing), 020206 networking & telecommunications, 02 engineering and technology, lcsh:HE9713-9715, [SPI.TRON]Engineering Sciences [physics]/Electronics, Dipole, Planar, Wireless communication systems, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, lcsh:Cellular telephone services industry. Wireless telephone industry, lcsh:Electrical engineering. Electronics. Nuclear engineering, Electrical and Electronic Engineering, Wideband, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, lcsh:TK1-9971
Abstract

Terahertz (THz) links will play a major role in high data rate communication over a distance of few meters. In order to achieve this task, antenna designs with high gain and wideband characteristics will spearhead these links. In this contribution, we present different antenna designs that offer characteristics better suited to THz communication over short distances. Firstly, a single-element antenna having a dipole and reflector is designed to operate at 300 GHz, which is considered as a sub-terahertz band. That antenna achieves a wide impedance bandwidth of 38.6% from 294 GHz to 410 GHz with a gain of 5.14 dBi. Secondly, two designs based on the same dipole structure but with added directors are introduced to increase the gain while maintaining almost the same bandwidth. The gains achieved are 8.01 dBi and 9.6 dBi, respectively. Finally, an array of 1×4 elements is used to achieve the highest possible gain of 13.6 dBi with good efficiency about 89% and with limited director elements for a planar compact structure to state-of-the-art literature. All the results achieved make the proposed designs viable candidates for high-speed and short-distance wireless communication systems.

Published
2019

2. A Comparative Study between Via-Hole and Via-Free Grounded Coplanar Waveguide to Microstrip Transitions on Thin Polymer Substrate

Author

Mohammed El Gibari, Hongwu Li, Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Nantes Université (NU)-Université de Rennes 1 (UR1)

Subjects
Materials science, Article Subject, Integrated circuit, 7. Clean energy, Microstrip, law.invention, Via-Hole coplanar microstrip transition, [SPI]Engineering Sciences [physics], chemistry.chemical_compound, law, Benzocyclobutene, Electronic engineering, Insertion loss, Polymer substrate, Thin film, Electrical and Electronic Engineering, Polymer, Electronic circuit, business.industry, Coplanar waveguide, lcsh:HE9713-9715, chemistry, Broad bandwidth, lcsh:Cellular telephone services industry. Wireless telephone industry, Optoelectronics, lcsh:Electrical engineering. Electronics. Nuclear engineering, Via-free coplanar microstrip transition, business, lcsh:TK1-9971, Microwave
Abstract

A comparative study between via-holed and via-free back-to-back GCPW-MS-GCPW (Grounded Coplanar Waveguide-Microstrip lines) transitions is reported in this paper. According to simulation results, both via-holed and via-free transitions on commercial benzocyclobutene polymer 20 µm film show a bandwidth over 57 GHz. Bandwidth of optimized via-holed transitions increases with the via-hole diameter, up to 75 GHz with 300 μm via-hole diameter. The via-hole free transition achieves experimentally an ultrabroadband from 2 GHz to 78 GHz with an insertion loss of only 0.5 dB thanks to the copper metallization thickness of 2 μm. In addition, these measurement results are in perfect agreement with the simulation results. These via-free and via-holes transitions are very useful and requested in component packaging, on-wafer measurements of microstrip based microwave integrated circuits, and also the interconnections in hybrid circuits including both microstrip and coplanar structures.

Published
2015

3. A Planar Reconfigurable Radiation Pattern Dipole Antenna with Reflectors and Directors for Wireless Communication Applications

Author

M'Hamed Drissi, Imen Ben Trad, Fethi Choubani, Hatem Rmili, Jean-Marie Floc'h, Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Ecole supérieure des communications de Tunis (SUP'COM [TUNIS]), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Université de Nantes (UN)-Université de Rennes 1 (UR1)

Subjects
Engineering, Reconfigurable antenna, Article Subject, business.industry, 020208 electrical & electronic engineering, Electrical engineering, PIN diode, 020206 networking & telecommunications, 02 engineering and technology, lcsh:HE9713-9715, law.invention, Radiation pattern, [SPI]Engineering Sciences [physics], Dipole, Planar, law, 0202 electrical engineering, electronic engineering, information engineering, lcsh:Cellular telephone services industry. Wireless telephone industry, lcsh:Electrical engineering. Electronics. Nuclear engineering, Dipole antenna, Electrical and Electronic Engineering, Antenna (radio), business, lcsh:TK1-9971, Monopole antenna
Abstract

International audience; A planar printed dipole antenna with reflectors and directors, able to steer its radiation pattern in different directions, is proposed for telecommunication applications. Starting from a dual-beam printed dipole antenna achieved by combining two elementary dipoles back to back, and by loading four PIN diodes, three modes of reconfigurable radiation patterns are achieved at the frequency 2.56 GHz thanks to switches states. A prototype of the structure was realized and characterized; an efficiency of 75% is obtained. Simulation and measured results of the results are presented and discussed.

Published
2014

4. Asymptotic Modeling of Coherent Scattering from Random Rough Layers: Application to Road Survey by GPR at Nadir

Author

Cedric Le Bastard, Christophe Bourlier, Meng Sun, Nicolas Pinel, Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)

Subjects
Article Subject, Gaussian, 02 engineering and technology, 01 natural sciences, 010309 optics, symbols.namesake, Optics, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, Nadir, Electrical and Electronic Engineering, ComputingMilieux_MISCELLANEOUS, Physics, Scattering, business.industry, Mathematical analysis, 020206 networking & telecommunications, lcsh:HE9713-9715, Uncorrelated, Exponential function, Ground-penetrating radar, symbols, lcsh:Cellular telephone services industry. Wireless telephone industry, lcsh:Electrical engineering. Electronics. Nuclear engineering, Pile, business, lcsh:TK1-9971
Abstract

This paper studies the coherent scattering from random rough layers made up of two uncorrelated random rough surfaces, by considering 2D problems. The results from a rigorous electromagnetic method called PILE (propagation-inside-layer expansion) are used as a reference. Also, two asymptotic analytical approaches are presented and compared to the numerical model for comparison. The cases of surfaces with both Gaussian and exponential correlations are studied. This approach is applied to road survey by GPR at nadir.

Published
2012

5. Analysis of a Compact and Superdirective Metamaterial-Inspired Monopole Antenna

Author

Fethi Choubani, Jean-Marie Floc'h, Hatem Rmili, Saber Dakhli, Kourosh Mahdjoubi, Institut d'Électronique et des Technologies du numéRique (IETR), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Ecole supérieure des communications de Tunis (SUP'COM [TUNIS]), King Abdulaziz University, Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)

Subjects
Coupling, Engineering, Article Subject, business.industry, Acoustics, Metamaterial, Physics::Optics, lcsh:HE9713-9715, Directivity, [SPI.TRON]Engineering Sciences [physics]/Electronics, Resonator, [SPI]Engineering Sciences [physics], Position (vector), Parasitic element, Electronic engineering, lcsh:Cellular telephone services industry. Wireless telephone industry, lcsh:Electrical engineering. Electronics. Nuclear engineering, Electrical and Electronic Engineering, business, Monopole antenna, lcsh:TK1-9971
Abstract

The directivity of a metamaterial-inspired compact (0.145λ0) monopole antenna was investigated. The proposed structure is composed of a split-ring resonator (SRR) parasitic element placed in the vicinity of a monopole antenna. Two configurations denoted by A1 and A2 were considered depending on the position of the slot in the SRR element. By analyzing simulated and measured results, the superdirectivity (7.5 dBi for A1 and 9 dBi for A2) of the structure was discussed. It is found that the monopole-SRR and/or ground plane-SRR coupling effects may be responsible for the superdirectivity of the structure.

Published
2014

6. Application of a Channel Estimation Algorithm to Spectrum Sensing in a Cognitive Radio Context

Author

Moïse Djoko-Kouam, Yves Louet, Vincent Savaux, Alexandre Skrzypczak, Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), ECAM Rennes - Louis de Broglie (ECAM), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Nantes Université (NU)-Université de Rennes 1 (UR1)

Subjects
Spectrum sensing, Minimum mean square error, Article Subject, Iterative method, Computer science, Orthogonal frequency-division multiplexing, Frequency-selective fading channels, Cognitive radio, Detector, Iterative algorithms, lcsh:HE9713-9715, Noise, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, Electronic engineering, lcsh:Cellular telephone services industry. Wireless telephone industry, False alarm, lcsh:Electrical engineering. Electronics. Nuclear engineering, Electrical and Electronic Engineering, Algorithm, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, lcsh:TK1-9971, Communication channel, OFDM, Computer Science::Information Theory
Abstract

International audience; This article deals with spectrum sensing in an orthogonal frequency division multiplexing (OFDM) context, allowing an opportunistic user to detect a vacant spectrum resource in a licensed band. The proposed method is based on an iterative algorithm used for the joint estimation of noise variance and frequency selective channel. It can be seen as a second-order detector, since it is performed by means of the minimum mean square error criterion. The main advantage of the proposed algorithm is its capability to perform spectrum sensing, noise variance estimation and channel estimation in the presence of a signal. Furthermore, the sensing duration is limited to only one OFDM symbol. We theoretically show the convergence of the algorithm, and we derive its analytical detection and false alarm probabilities. Furthermore, we show that the detector is very efficient, even for low SNR values, and is robust against a channel uncertainty.

Published
2014

7. Miniaturized Antenna Solution Based on Lossy Planar Microresonators to Conjointly Control Radiation and Selectivity

Author

Anne Chousseaud, Biyun Ma, Serge Toutain, Southern University of Science and Technology (SUSTech), Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Southern University of Science and Technology [Shenzhen] (SUSTech), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Université de Nantes (UN)-Université de Rennes 1 (UR1)

Subjects
Patch antenna, Engineering, filtering antenna solution, Article Subject, business.industry, Miniaturized antenna, Antenna measurement, Antenna aperture, radiating filter, Antenna factor, lcsh:HE9713-9715, law.invention, Antenna efficiency, Radiation pattern, [SPI]Engineering Sciences [physics], law, Electronic engineering, lcsh:Cellular telephone services industry. Wireless telephone industry, Dipole antenna, lcsh:Electrical engineering. Electronics. Nuclear engineering, Electrical and Electronic Engineering, business, quasi-lumped structure, Monopole antenna, lcsh:TK1-9971
Abstract

International audience; In this paper, we propose a new method to design miniaturized compact antennas, in which it is possible to control conjointly the radiation efficiency and the bandwidth selectivity of the antenna. And this method has been validated by the realization of prototypes based on planar resonators. The geometry of these resonators has been chosen because their unloaded quality factor can be controlled and is mainly dependent on radiation loss. In a first time, a filter with a significant potential to radiation has been realized by choosing suitable miniaturized resonators. An antenna, based on the same structure, in which the output of the filter was removed (load by air resistance), can be obtained. Modification of the quality factor of each resonator is necessary to take into account the change of the load value from the previous filter to the final structure. The position and the quality factor of the resonators are determined by a filter design concept to obtain a specific frequency response in which each resonator is a basic radiation element. Load of the antenna is ultimately a distributed load constituted by the parallel contributions of each resonators to radiation loss. In other words such an antenna can also be called radiating filter.

Published
2014

8. Investigation of Flexible Textile Antennas and AMC Reflectors

Author

Anne-Claude Tarot, Mohamad Mantash, Sylvain Collardey, Kouroch Mahdjoubi, Institut d'Electronique et de Télécommunications de Rennes (IETR), Centre National de la Recherche Scientifique (CNRS)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES), Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Nantes Université (NU)-Université de Rennes 1 (UR1)

Subjects
010302 applied physics, Engineering, Anechoic chamber, Article Subject, business.industry, 020206 networking & telecommunications, Reflector (antenna), 02 engineering and technology, lcsh:HE9713-9715, 01 natural sciences, 0103 physical sciences, Broadband, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Textile antenna, Conductive textile, lcsh:Cellular telephone services industry. Wireless telephone industry, lcsh:Electrical engineering. Electronics. Nuclear engineering, Electrical and Electronic Engineering, Antenna (radio), Denim, business, Monopole antenna, lcsh:TK1-9971, ComputingMilieux_MISCELLANEOUS
Abstract

In this paper, two different methods for fabric characterization are presented: a single frequency method and a broadband method. Felt and denim fabrics are characterized, and patch antennas are designed using these substrates to test both methods. Prototypes of the antennas on felt and denim are manufactured using conductive textile (called electrotextile) aiming to obtain fully flexible antennas. The prototypes are characterized in anechoic chamber to be compared and obtain conclusions related to the characterization methods. A new dual-band hexagonal AMC reflector combinable with antennas is also proposed to improve their performance and reduce the backward radiation to the human body. A novel broadband CPW-fed monopole antenna is designed to be combined with the AMC. The resulted prototype is characterized and compared with the performance of the CPW-fed antenna alone.

Published
2012
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9. Dual-Beam Antenna Design for Autonomous Sensor Network Applications

Author

Yvan Kokar, Jean-Marie Floch, Ahmad El Sayed Ahmad, Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Nantes Université (NU)-Université de Rennes 1 (UR1)

Subjects
Engineering, 02 engineering and technology, computer.software_genre, Base station, [SPI]Engineering Sciences [physics], 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Computer Aided Design, Electrical and Electronic Engineering, ComputingMilieux_MISCELLANEOUS, Supervisor, business.industry, HFSS, Node (networking), 020208 electrical & electronic engineering, Electrical engineering, 020206 networking & telecommunications, lcsh:HE9713-9715, lcsh:Cellular telephone services industry. Wireless telephone industry, lcsh:Electrical engineering. Electronics. Nuclear engineering, Antenna (radio), business, Wireless sensor network, computer, lcsh:TK1-9971, Energy (signal processing)
Abstract

International audience; This paper describes our contribution in the ANR project called CAPNET dedicated to the site security (autonomous sensor network). The network is autonomous in term of energy and it is very easy to deploy on the site (the time to deploy each node of the network is around 10 minutes). The first demonstrator was deployed in the fire base station of Brest, France with 10 nodes with a security perimeter around 1.5 km. Our contribution takes place in the field of antennas, with the development of two systems: a single-beam antenna reserved for the supervisor or the last node of the network, and a dual-beam antenna dedicated to the node in linear configuration. For the design and optimization of antennas, we use HFSS CAD software from ANSOFT. The antennas have been designed and successfully measured.

Published
2012

10. High Gain Array of Monopoles-Coupled Antennas for Wireless Applications

Author

Jean-Marie Floc'h, Mohamad Mantash, Ahmad El Sayed Ahmad, Marc Thevenot, OSA (XLIM-OSA), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Nantes Université (NU)-Université de Rennes 1 (UR1)

Subjects
Engineering, Article Subject, Acoustics, 02 engineering and technology, 7. Clean energy, Radiation pattern, law.invention, law, 0202 electrical engineering, electronic engineering, information engineering, Dipole antenna, Electrical and Electronic Engineering, Omnidirectional antenna, Monopole antenna, Directional antenna, business.industry, Reflective array antenna, Antenna aperture, Electrical engineering, 020206 networking & telecommunications, lcsh:HE9713-9715, lcsh:Cellular telephone services industry. Wireless telephone industry, 020201 artificial intelligence & image processing, lcsh:Electrical engineering. Electronics. Nuclear engineering, Antenna gain, business, lcsh:TK1-9971
Abstract

International audience; An array of monopole antennas over a ground plane that radiates a directive lobe in the end-fire direction are described in this paper. The design uses the rigorous method described by Drouet et al. 2008 in order to synthesize the radiation through the strong cumulative coupling between the monopoles. A gain higher than 20 dB was achieved in the end-fire direction over a 4.5% bandwidth. However, the antenna has been tilted in order to compensate the beam deviation caused by the edge diffraction. A prototype with 12 elements has been manufactured in order to validate the antenna principle and the whole antenna is successfully measured. The prototype was studied with the software CST-Microwave Studio and the feed network has been designed with Agilent ADS.

Published
2012
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11. UWB Directive Triangular Patch Antenna

Author

A. C. Lepage, Xavier Begaud, G. Le Ray, Ala Sharaiha, Laboratoire Traitement et Communication de l'Information (LTCI), Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Institut d'Électronique et des Technologies du numéRique (IETR), Université de Nantes (UN)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), Nantes Université (NU)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS), and Université de Nantes (UN)-Université de Rennes 1 (UR1)

Subjects
Engineering, Article Subject, 02 engineering and technology, Data_CODINGANDINFORMATIONTHEORY, Antenna tuner, Microstrip antenna, [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Electrical and Electronic Engineering, ComputingMilieux_MISCELLANEOUS, Patch antenna, Directional antenna, Coaxial antenna, business.industry, 020208 electrical & electronic engineering, Antenna measurement, Electrical engineering, 020206 networking & telecommunications, Antenna factor, lcsh:HE9713-9715, Antenna efficiency, lcsh:Cellular telephone services industry. Wireless telephone industry, lcsh:Electrical engineering. Electronics. Nuclear engineering, business, lcsh:TK1-9971, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing
Abstract

Compact directive UWB antennas are presented in this paper. We propose an optimization of the F-probe fed triangular patch antenna. The new design achieves an impedance bandwidth of69%(3–6.15 GHz) and presents good radiation characteristics over the whole impedance bandwidth. The average gain is 6.1 dB. A time-domain study has been performed to characterize the antenna behavior in case a UWB pulse is used. Finally, we propose an alternative solution to facilitate the manufacturing process using metallized foam technology. It also improves the robustness of the antenna as well as reducing its cost.

Published
2008
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