Thematische Bibliographien / Smart antenna

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Auswahl der wissenschaftlichen Literatur zum Thema „Smart antenna“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 11. März 2023

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Zeitschriftenartikel zum Thema "Smart antenna"

Chougule, Rutuja. „Smart Antenna Systems“. International Journal for Research in Applied Science and Engineering Technology 10, Nr. 6 (30.06.2022): 1182–86. http://dx.doi.org/10.22214/ijraset.2022.43988.

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Abstract: Smart antennas have received increasing interest for improving the performance of wireless radio systems. These systems of antennas include a large number of techniques that attempt to enhance the received signal, suppress all interfering signals, and increase capacity, in general. The main purpose of this article is to provide an overview of the current state of research in the area of smart antennas, and to describe how they can be used in wireless systems. A smart antenna takes advantage of diversity effect at the source (transmitter), the destination (receiver), or both. Diversity effect involves the transmission and/or reception of multiple radio frequency (RF) waves to increase data speed and reduce the error rate. Thus, this article provides a basic model for determining the angle of arrival for incoming signals, the appropriate antenna beamforming, and the adaptive algorithms that are currently used for array processing. Moreover, it is shown how smart antennas, with spatial processing, can provide substantial additional improvement when used with TDMA and CDMA digitalcommunication systems.

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Bansal, Preeti, und Nidhi Chahal. „Smart Antennas for Various Applications“. CGC International Journal of Contemporary Technology and Research 4, Nr. 2 (05.08.2022): 316–18. http://dx.doi.org/10.46860/cgcijctr.2022.07.31.316.

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The paper presents about smart antennas for advancement in wireless and mobile communication. Smart antennas also called adaptive array antennas with better signal processing & can be used to calculate beam forming vectors which helps in tracking & locating antenna beam of target. Smart antennas are helpful in health monitoring in covid-19 pandemic and provides better service quality. Smart antenna is one of the rising innovations which can satisfy the prerequisites. Smart antennas are being used for controlling, monitoring and analyzing real time systems for various applications In smart antennas spatial division of the signal is used as compared to spectrum division, it can be beneficial for improving the performance of wireless communication. This paper describes how switched beam & adaptive array antennas differ from basic antennas.

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M. Africa, Aaron Don, Rica Rizabel M. Tagabuhin und Jan Jayson S. D. Tirados. „Design and simulation of an adaptive beam smart antenna using MATLAB“. Indonesian Journal of Electrical Engineering and Computer Science 21, Nr. 3 (10.03.2021): 1584. http://dx.doi.org/10.11591/ijeecs.v21.i3.pp1584-1593.

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<span id="docs-internal-guid-ad3b6b0d-7fff-2d92-685e-3d423ac2713f"><span>Signals transmitted over a long range of distance may pass through several obstacles and scatter, taking multiple paths to reach the receiver. Beamforming antennas are controlled electronically to adjust the radiation pattern following the first received signal. This allows the antenna to maximize the received signal and consequently, suppress the interfering signals received. A smart antenna should be able to diminish noise, increase the signal to noise ratio, and have better system competence. The adaptive beam makes use of the spacing of the several antennas and the phase of the signal of each antenna array to control the shape and direction of the signal beam. This paper focuses on the use of smart antennas using an adaptive beam method as a better system for the transmission of signals. A simulation between the existing Omnidirectional antenna system and the smart antenna system will be made and compared. The paper will discuss the corresponding advantages that a smart antenna system has compared to the Omnidirectional antenna system.</span></span>

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Mondal, Japatosh, Sobuj Kumar Ray, Md Shah Alam und Md Mezanur Rahman. „Design Smart Antenna by Microstrip Patch Antenna Array“. International Journal of Engineering and Technology 3, Nr. 6 (2011): 675–83. http://dx.doi.org/10.7763/ijet.2011.v3.304.

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Yang, Lingsheng, Peijie Wang, Biyu Cheng und Jianping Fang. „Design of Hybrid Antenna System for User Terminal Applications“. Frequenz 72, Nr. 9-10 (28.08.2018): 407–14. http://dx.doi.org/10.1515/freq-2017-0197.

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Abstract An eight-element hybrid Smart antenna-MIMO system for user terminal application is proposed in this paper. The hybrid antenna system is based on an eight elements antenna array. When operate with respective feed ports, by using radiation pattern diversity, more than 15 dB isolation among antenna elements can be achieved. After designing the feed networks based on maximum power transmission optimization between the transmit and receive antennas, beam steering performance can be obtained, the eight elements work together as a smart antenna array. The hybrid system has both the advantages of MIMO and smart antenna, and is competitive for future wireless communication applications.

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Chin, Kuo-Sheng, Chi-Sheng Wu, Chien-Lung Shen und Kun-Chuan Tsai. „Designs of Textile Antenna Arrays for Smart Clothing Applications“. Autex Research Journal 18, Nr. 3 (01.09.2018): 295–307. http://dx.doi.org/10.1515/aut-2018-0002.

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Abstract In this work, three designs of textile antennas, namely, a rectangular microstrip patch antenna, annular slot antenna, and planar inverted-F antenna (PIFA), operating in the 2.45 GHz WLAN band were developed for smart clothing applications. Conductive textile, a copper-plated polyester fabric, was used for fabricating antenna radiators and grounds. An insulating neoprene fabric with a thickness of 4 mm and a permittivity of 1.5 was used for preparing the substrates. The textile patch antenna achieved a maximum gain of 5.96 dBi and a bandwidth of 4.6%. The annual slot antenna showed a moderate gain and bandwidth of 2.9 dBi and 13.1%, respectively. The PIFA achieved the widest bandwidth of 31% but the smallest gain of 1.2 dBi. Furthermore, the performance deterioration of the proposed antennas under various bending conditions was analyzed to evaluate their suitability for wearable applications. Moreover, two 2 × 2 patch and slot antenna arrays were assembled to increase gain and bandwidth. The measured results proved that the developed antenna designs provide superior performance.

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T. G., Shivapanchakshari, und H. S. Aravinda. „PSO-CCO_MIMO-SA: A particle swarm optimization based channel capacity optimzation for MIMO system incorporated with smart antenna“. International Journal of Electrical and Computer Engineering (IJECE) 10, Nr. 6 (01.12.2020): 6276. http://dx.doi.org/10.11591/ijece.v10i6.pp6276-6282.

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With the radio channels physical limits, achieving higher data rate in the multi-channel systems is been a biggest concern. Hence, various spatial domain techniques have been introduced by incorporating array of antenna elements (i.e., smart antenna) in recent past for the channel limit expansion in mobile communication antennas. These smart antennas help to yield the improved array gain or bearm forming gain and hence by power efficiency enhanmaent in the channel and antenna range expansion. The use of smart antenna leads to spatial diversity and minimizes the fading effect and improves link reliability. However, in the process of antenna design, the proper channel modelling is is biggest concern which affect the wireless system performance. The recent works of MIMO design systems have discussed the issues in number of antenna selection which suggests that optimization of MIMO channel capacity is required. Hence, a Particle Swarm Optimization based channel capacity optimzation for MIMO system incorporated with smart antenna is introduced in this paper. From the outcomes it is been found that the proposed PSO based MIMO system achieves better convergenece speed which results in better channel capacity.

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C. Anand. „Review of Smart Antenna Approaches in Wireless Systems“. December 2022 4, Nr. 4 (03.01.2023): 253–62. http://dx.doi.org/10.36548/jsws.2022.4.004.

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Wireless mobile communication is one of the rapidly growing fields of Information and Communication Technologies (ICT). The adoption of smart antennas will also minimize the cost. The success of smart antennas relies on two phases: In first phase, the features of smart antennas should be considered in design phase of next-generation wireless mobile communication systems. In second phase, the performance of smart antennas should be analyzed according to crucial parameters that satisfy the requirements of next-generation wireless mobile communication systems. The proposed research study summarizes the concept and types of smart antennas. Further, the most recent innovations in smart antenna domains such as varying network conditions, coverage & connectivity, Quality of Service (QoS), energy efficiency, routing are discussed.

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Zhang, Zufan, Jie Zhang und Shaohui Sun. „Model of Handover and Traffic Based on Cellular Geometry with Smart Antenna“. International Journal of Antennas and Propagation 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/646053.

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Based on the application of smart antennas in cellular mobile communications, this paper introduces the impact of the width of the antenna beams playing on the dwell time probability density function in cellular geometry with smart antenna. The research results indicate that the smart cell structure can improve the dwell time of users within the cell and improve the traffic system performance.

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Levy, Mounissamy, Sumanta Bose, D. Sriram Kumar und Anh Van Dinh. „Rapid Beam Forming in Smart Antennas Using Smart-Fractal Concepts Employing Combinational Approach Algorithms“. International Journal of Antennas and Propagation 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/467492.

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Smart antennas offer a broad range of ways to improve wireless system performance. They provide enhanced coverage through range extension, hole filling, and better building penetration. Smart antennas use an array of low gain antenna elements which are connected by a network. Fractal concepts have been used in antenna arrays recently. The important properties of fractal arrays are frequency independent multiband characteristics, schemes for realizing low side lobe designs, systematic approaches to thinning, and the ability to develop rapid beam forming algorithms. In this paper, an attempt has been made to apply assignment of usage time and location tag algorithm for smart antennas combined with the fractal concepts to reduce the computational complexity and enhance resource allocation for rapid beam forming algorithms. Furthermore, two combinational approach algorithms are proposed for peer users within single base station and peer users between different base stations.

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Dissertationen zum Thema "Smart antenna"

Ryken, Marv. „C-Band TM Smart Antenna“. International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581445.

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ITC/USA 2012 Conference Proceedings / The Forty-Eighth Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2012 / Town and Country Resort & Convention Center, San Diego, California
This paper addresses the system requirements of the C-Band TM antenna that will take the place of the S-Band TM antenna used in applications on munitions and targets that require a quasi-omni directional antenna pattern. For these applications, the C-Band TM effective radiated power (ERP) must be approximately 3 dB higher than the S-Band TM ERP to achieve the same system performance due mainly to weather and environmental differences. From a systems stand-point, this will be a problem for the following reasons: power amplification at higher frequencies is usually less efficient, there is a limit on prime power due to battery capabilities, and a more complex corporate feed at C-Band as compared to S-Band will produce more loss. This means that a more fruitful approach would be to use smart antenna ideas to achieve the required higher ERP as compared to current approaches of using higher power transistors and more battery power. Several smart antenna ideas are introduced in this paper, switchable driven element antenna is described including active amplification at each element.

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Hwang, Seung-Hyeon. „Adaptive antenna techniques for smart antennas and radar systems“. Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2005. http://wwwlib.umi.com/cr/syr/main.

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Reis, Helder Vasconcelos Graça. „Smart antenna for RFID applications“. Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/14541.

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Mestrado em Engenharia Electrónica e Telecomunicações
The adoption and proliferation of information systems in many business and personal activities leads to the need of tagging and tracking items and services. Radio frequency identi cation (RFID) systems were developed as an e ort to answer the increasing needs of particulars and enterprises alike for wireless identi cation of objects and data exchange services, enabling a large number of businesses to reduce costs and increase revenue. As to further develop the e ciency provided by businesses worldwide, smart antenna systems were introduced as core component in their production and service providing lines, opening the path for innovative and robust wireless RFID based communication schemes, providing advanced signal capturing, processing characteristics and enhanced tracking and process automation. Smart antennas can be installed within RFID readers, enabling them to more e ciently process returned echoes by the tags and therefore improving the identi cation mechanism. RFID reader architectures with an embedded smart antenna network reliably improve the throughput, the reading speed and position detection of tagged items. A smart antenna based circuit is proposed here for RFID assisted localization and for beam steering applications using a uniform linear array of microstrip directional antennas. Several beamforming and direction of arrival estimation methods were employed in order to analyze their performance and resolution based on the computational load, modulation, and the overall environment in which the smart anetnna system may be deployed.
A adoção e proliferação de sistemas de informação em várias indústrias e atividades pessoais são responsáveis pela crescente necessidade de identifcar e rastrear itens e serviços. Sistemas de identificação por rádiofrequência (RFID) foram desenvolvidos de modo a responder às crescentes necessidades tanto de particulares como de empresas quanto à utilização de sistemas de identificaçao e de transmissão de dados sem _os, permitindo a redução de despesas e o aumento de receitas a várias empresas. De modo a melhorar a eficiência de empresas a uma escala global, sistemas de antenas inteligentes foram introduzidos nas suas linhas de manufatura e de prestação de serviços como um componente central, abrirando o caminho para esquemas de comunicação sem _os inovadores e robustos, baseados em RFID, facultando processos de captura e processamento de sinal avançados capazes de fornecer melhorias em aplicações de rastreamento e automação de processos. Antenas inteligentes podem ser instaladas em leitores RFID, permitindo um melhor processamento de sinais transmitidos pelas etiquetas, dando origem a um método de identificação mais eficiente. A arquitectura de leitores RFID com uma rede de antenas inteligentes embutida garante melhorias na taxa de transferência e na rapidez de leitura de informação assim como na deteção de itens etiquetados. Um circuito baseado em sistemas de antenas inteligentes é proposto neste trabalho para localização assistida dispositivos RFID e para direccionamento de feixe através da utilizaçao de um agregado linear e uniforme de antenas microstrip diretivas. Várias técnicas de direcionamento de feixe e de estimativa de angulo de chegada foram utilizados, de modo a analisar o desempenho e a resolução de cada algoritmo de acordo com a carga computacional, modulação utilizada e o ambiente em que o sistema de antenas inteligentes poderá ser implementado.

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Zarei, Hossein. „RF variable phase shifters for multiple smart antenna transceivers /“. Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/5964.

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Tidd, William Graves. „Sequential beamspace smart antenna system“. Thesis, Montana State University, 2011. http://etd.lib.montana.edu/etd/2011/tidd/TiddW0511.pdf.

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This thesis proposes a design of a novel and innovative sequential beamspace (SBS) smart antenna system. The system is capable of accurate direction of arrival (DOA) estimation in beamspace and efficient beamforming. Moreover, the robust functionality of such a system includes high resolution radio frequency (RF) emitter DOA estimation and beamforming in a noisy environment in the presence of strong interference. Simulations for DOA estimation using beamspace MUSIC and beamspace Capon methods are presented in conjunction with Capon beamforming. These methods are compared and contrasted with proven element space DOA estimation techniques to demonstrate the validity and advantages of pursuing a SBS smart antenna for real-world applications. The beamspace DOA estimation accuracy, resolution, beamforming pattern, and output signal quality have been thoroughly studied and quantified. The algorithms have been tailored to utilize an 8 element uniform circular array (UCA) and an 8 channel analog beamformer (BF) operating at 5.8 GHz to gather lab-based experimental results. The simulations and experimental results show that the proposed system can achieve good performance once it is properly synchronized using a time delay correction filter. In addition, a significant decrease in hardware is realized when operating in beamspace versus element space.

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Palantei, Elyas. „Switched Parasitic Smart Antenna: Design and Implementation for Wireless Communication Systems“. Thesis, Griffith University, 2012. http://hdl.handle.net/10072/366219.

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Smart antenna technology in applications such as the next-G wireless communication networks may improve the quality of service (QoS). One category of smart antennas is the switched beam smart antenna (SBA). These antennas can be grouped into plug and play antennas and adaptive internal antennas. Four types of switched beam smart antennas were investigated including a six monopole array on circular ground plane with conducting sleeve, five monopoles on a circular ground plane without a conducting sleeve, a reconfigurable monopole on a cylindrical hollow ground structure, and a reconfigurable adaptive internal antenna. The first two antennas were constructed with a switched parasitic array of elements combined with an RF circuit with microcontroller. Two of the four antenna prototypes were capable for steering the beam pattern automatically based on signal strength (RSSI) or bit error rate (BER) scanning. The two remaining antennas were designed for electronic beamforming and electronic frequency tuning. Both numerical and empirical investigations were undertaken to measure performance and investigate manufacture difficulties. The numerical investigations were undertaken using both the method of moment (MoM)-NEC and the finite element method (FEM)-HFSS modeling. The fabrication and testing in an anechoic chamber were used to explore the actual performance of the designed antennas. The fabrication of the last two types of antennas was not implemented. Further work is required to find the optimal design for all antennas investigated. This study suggests significant promise for these antennas in wireless networks.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Engineering
Science, Environment, Engineering and Technology
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Tung, Edwin Tai-Wing. „A multiport antenna for an indoor PCS smart antenna system“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ38646.pdf.

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Pal, Jitendra. „RF MEMS Switches for Smart Antenna“. Thesis, Griffith University, 2016. http://hdl.handle.net/10072/368172.

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The adoption of smart antenna techniques in future wireless systems is expected to have a significant impact on the efficient use of the spectrum and the minimisation of the cost of establishing new wireless networks. RF MEMS devices are the potential candidates to revolutionise RF and microwave system implementation for next generation wireless applications. Despite having excellent performances, there are some drawbacks associated with RF MEMS switches. The main challenges with RF MEMS switches are their high actuation voltage, limited reliability and low power handling capability. This thesis presents novel RF MEMS switches which can overcome these issues. To achieve zero power consumption, we have fabricated latching RF MEMS switches. In addition, we have combined thermal actuation and electrostatic actuation mechanisms to achieve lower actuation voltage. We have also developed a novel contactless RF MEMS switch to increase the reliability of the switch. The switch is free from unavoidable stiction and micro-welding problems in other contact types, which in return guarantees high reliability and long lifetime. The proposed device is based on variable capacitance between signal lines and movable grounded electrodes controlled by electrostatic actuator. The movable grounded electrode has the capability to move bi- directionally, therefore the switch can change among ON, OFF and deep-OFF states. Thus, additional isolation can be achieved in the deep-OFF state. The switch shows excellent RF performances. To increase the power handling capability of switch, we have developed a multi-contact Single Pole Single Throw (SPST). The switch achieves uniform current distribution through each contact, thereby increasing power handling capability. The switch is actuated with separate electrodes to control the current density and direction.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Engineering
Science, Environment, Engineering and Technology
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Elfarawi, Shaaban M. „Indoor CDMA capacity using smart antenna base station“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0019/MQ54885.pdf.

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Karnaushenko, Dmitriy D. „Compact Helical Antenna for Smart Implant Applications“. Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-230942.

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Medical devices have made a big step forward in the past decades. One of the most noticeable medical events of the twenties century was the development of long-lasting, wireless electronic implants such as identification tags, pacemakers and neuronal stimulators. These devices were only made possible after the development of small scale radio frequency electronics. Small radio electronic circuits provided a way to operate in both transmission and reception mode allowing an implant to communicate with an external world from inside a living organism. Bidirectional communication is a vital feature that has been increasingly implemented in similar systems to continuously record biological parameters, to remotely configure the implant, or to wirelessly stimulate internal organs. Further miniaturisation of implantable devices to make the operation of the device more comfortable for the patient requires rethinking of the whole radio system concept making it both power efficient and of high performance. Nowadays, high data throughput, large bandwidth, and long term operation requires new radio systems to operate at UHF (ultra-high frequency) bands as this is the most suitable for implantable applications. For instance, the MICS (Medical Implant Communication System) band was introduced for the communication with implantable devices. However, this band could only enable communication at low data rates. This was acceptable for the transmission of telemetry data such as heart beat rate, respiratory and temperature with sub Mbps rates. Novel developments such as neuronal and prosthetic implants require significantly higher data rates more than 10 Mbps that can be achieved with large bandwidth communicating systems operating at higher frequencies in a GHz range. Higher operating frequency would also resolve a strong issue of MICS devices, namely the scale of implants defined by dimensions of antennas used at this band. Operation at 2.4 GHz ISM band was recognized to be the most adequate as it has a moderate absorption in the human body providing a compromise between an antenna/implant scale and a total power efficiency of the communicating system. This thesis addresses a key challenge of implantable radio communicating systems namely an efficient and small scale antenna design which allows a high yield fabrication in a microelectronic fashion. It was demonstrated that a helical antenna design allows the designer to precisely tune the operating frequency, input impedance, and bandwidth by changing the geometry of a self-assembled 3D structure defined by an initial 2D planar layout. Novel stimuli responsive materials were synthesized, and the rolled-up technology was explored for fabrication of 5.5-mm-long helical antenna arrays operating in ISM bands at 5.8 and 2.4 GHz. Characterization and various applications of the fabricated antennas are successfully demonstrated in the thesis.

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Bücher zum Thema "Smart antenna"

Matin, Mohammad Abdul, Hrsg. Wideband, Multiband, and Smart Antenna Systems. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-74311-6.

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Okamoto, Garret T. Smart Antenna Systems and Wireless LANs. Cleveland: Kluwer Academic Publishers, 2002.

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Smart antenna systems and wireless lans. Boston: Kluwer Academic Publishers, 1999.

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Ellinger, Frank. Monolithic integrated circuits for smart antenna receivers at C-band. Konstanz: Hartung-Gorre, 2001.

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1977-, Sun Chen, Cheng Jun 1964- und Ohira Takashi 1955-, Hrsg. Handbook on advancements in smart antenna technologies for wireless networks. Hershey, PA: Information Science Reference, 2008.

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Cambridge, England) IEEE International Workshop on Antenna Technology (2007. 2007 International Workshop on Antenna Technology: Small and smart antennas, metamaterials and applications : iWAT 2007, S²AMA : conference proceedings : Cambridge, UK, March 21-23, 2007. Piscataway, NJ: IEEE, 2007.

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Smart antennas. Boca Raton: CRC Press, 2004.

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Malik, Praveen Kumar, Joan Lu, B. T. P. Madhav, Geeta Kalkhambkar und Swetha Amit, Hrsg. Smart Antennas. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76636-8.

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Sarkar, Tapan K., Michael C. Wicks, Magdalena Salazar-Palma und Robert J. Bonneau. Smart Antennas. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2003. http://dx.doi.org/10.1002/0471722839.

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Tapan, Sarkar, Hrsg. Smart antennas. Hoboken, N.J: IEEE Press, 2003.

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Buchteile zum Thema "Smart antenna"

Ohira, Takashi, und Jun Cheng. „Analog Smart Antennas“. In Adaptive Antenna Arrays, 184–204. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-05592-2_11.

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Yaduvanshi, Rajveer S., und Gaurav Varshney. „Vehicular Smart Antenna“. In Nano Dielectric Resonator Antennas for 5G Applications, 215–32. First edition. | Boca Raton, FL : CRC Press, 2020.: CRC Press, 2020. http://dx.doi.org/10.1201/9781003029342-12.

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Leong, Stetson Oh Kok, Ng Kim Chong, P. R. P. Hoole und E. Gunawan. „Smart Antennas: Mobile Station Antenna Location“. In Smart Antennas and Electromagnetic Signal Processing in Advanced Wireless Technology, 195–216. New York: River Publishers, 2022. http://dx.doi.org/10.1201/9781003339564-7.

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Tiwari, Archana, und A. A. Khurshid. „Antenna Optimization Using Taguchi’s Method“. In Smart Antennas, 69–84. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76636-8_7.

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Kumar, Amit, Mahesh Kumar Agwariya und Vimlesh Singh. „Applications of Microstrip Antenna in IoT“. In Smart Antennas, 259–66. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76636-8_20.

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Mujawar, Mehaboob, und T. Gunasekaran. „Multiband Slot Microstrip Antenna for Wireless Applications“. In Smart Antennas, 23–34. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76636-8_3.

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Potey, Pranita Manish, Kushal Tuckley und Anjali Thakare. „Slot-Based Miniaturized Textile Antenna for Wearable Application“. In Smart Antennas, 315–30. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76636-8_24.

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Das, Hirendra, Mridusmita Sharma und Qiang Xu. „Microstrip Antenna: An Overview and Its Performance Parameter“. In Smart Antennas, 3–14. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76636-8_1.

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Caroline, B. Elizabeth, B. Neeththi Aadithiya, J. Jeyarani und Abdul Rahim Sadiq Batcha. „Planar Multiband Smart Antenna for Wireless Communication Applications“. In Smart Antennas, 285–98. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76636-8_22.

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Gaitonde, Jaya V., und Rajesh B. Lohani. „Configurable OPFET-Based Photodetector for 5G Smart Antenna Applications“. In Smart Antennas, 359–77. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-76636-8_27.

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Konferenzberichte zum Thema "Smart antenna"

Sulic, E., B. Pell, S. John, Rahul K. Gupta, W. Rowe, K. Ghorbani und K. Zhang. „Performance of Embedded Multi-Frequency Communication Devices in Smart Composite Structures“. In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-402.

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Lately, there has been an increased demand for vehicle manufacturers to incorporate a large number of communication, security, guidance and entertainment devices in their new vehicle models. In recent decades, the list has expanded from the AM and FM radio antennas to include GPS, mobile phone, collision avoidance radar, Digital Radio and Digital TV antennas. In addition, new technologies such as vehicle to vehicle and vehicle to road side communication are being implemented at 5.9 GHz in the next generation of vehicles. In the past the AM/FM antenna was typically a mast antenna protruding from the vehicle’s exterior, recently however, the trend has been to limit the visibility of vehicular antennas as much as possible to improve vehicle design and aerodynamics. This has lead to integration of antennae so that they become a seamless part of the vehicle structure. This paper reports on a parametric study of embedding an antenna in a polymeric composite substrate in relation to several material processing and coating parameters.

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Yi, Xiaohua, Chunhee Cho, Yang Wang, Benjamin S. Cook, James Cooper, Rushi Vyas, Manos M. Tentzeris und Roberto T. Leon. „Passive Frequency Doubling Antenna Sensor for Wireless Strain Sensing“. In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-7923.

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This paper presents the design, simulation, and preliminary measurement of a passive (battery-free) frequency doubling antenna sensor for strain sensing. Illuminated by a wireless reader, the sensor consists of three components, i.e. a receiving antenna with resonance frequency f0, a transmitting antenna with resonance frequency 2f0, and a matching network between the receiving and transmitting antennas. A Schottky diode is integrated in the matching network. Exploiting nonlinear circuit behavior of the diode, the matching network is able to generate output signal at doubled frequency of the reader interrogation signal. The output signal is then backscattered to the reader through the sensor-side transmitting antenna. Because the backscattered signal has a doubled frequency, it is easily distinguished by the reader from environmental reflections of original interrogation signal. When one of the sensor-side antennas, say receiving antenna, is bonded to a structure that experiences strain/deformation, resonance frequency of the antenna shifts accordingly. Through wireless interrogation, this resonance frequency shift can be measured by the reader and used to derive strain in the structure. Since operation power of the diode is harvested from the reader interrogation signal, no other power source is needed by the sensor. This means the frequency doubling antenna sensor is wireless and passive. Based on simulation results, strain sensitivity of this novel frequency doubling antenna sensor is around −3.84 kHz/με.

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Daliri, Ali, Chun H. Wang, Sabu John, Amir Galehdar, Wayne S. T. Rowe und Kamran Ghorbani. „Multidirectional Circular Microstrip Patch Antenna Strain Sensor“. In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-5065.

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In this paper, a new design for microstrip patch antenna strain sensors is proposed. The new antenna sensor works based on the meandered microstrip patch antennas. It is threefold more sensitive than previously proposed circular microstrip patch antenna strain sensors. Also, the overall physical dimension of the new antenna sensor is reduced by the factor of five. The current sensor is able to detect strain in all directions. In order to design the antenna sensor, two available commercial FEM software packages ANSYS™ and HFSS™ are used. Both experimental and FEM results corroborate the multidirectional feature of the new antenna sensor. Also, the effect of the hole size in the structure (for coaxial connection to the antenna) on the antenna performance has been studied. Based on the results obtained, the antenna sensor can be recommended for use in structural health monitoring for strain-based damage detection in aerospace structures.

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Daliri, Ali, Chun H. Wang, Sabu John, Amir Galehdar, Wayne S. T. Rowe, Kamran Ghorbani und Paul J. Callus. „FEA Evaluation of the Mechanical and Electromagnetic Performance of Slot Log-Spiral Antennas in Conformal Load-Bearing Antenna Structure (CLAS)“. In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-5137.

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Conformal load-bearing antenna structures (CLAS) have been attracting the attention of aerospace industries in recent years. This type of multifunctional structures combines the features of conventional antennas with load-bearing capacity and has important applications in military and commercial airplanes especially for Unmanned Aerial Vehicles (UAVs). Equiangular slot spiral antennas are an alternative to traditional rectangular slots because of its wideband radiation characteristics. However, the mechanical characteristics of such a spiral antenna integrated into a structure are so far largely unexplored. In this paper, the electromagnetic (scattering parameter, radiation pattern and gain) and mechanical properties (stress concentration factor (SCF)) of spiral antennas is investigated using finite element analysis (FEA). The results lead to a recommendation for using this type of antenna for future CLAS concepts.

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Daliri, Ali, Sabu John, Chun H. Wang, Amir Galehdar, Wayne S. T. Rowe, Kamran Ghorbani und Paul J. Callus. „Effect of Filler Materials on the Performance of Conformal Load-Bearing Spiral Antennas“. In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-7955.

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The slots in spiral antennas induce stress concentrations and hence may adversely affect the load-carrying capacity of the structural antenna. To minimise the detrimental effect of the slots, appropriate fillers are required to provide structural reinforcement without compromising the radar performance of the antenna. This paper presents an investigation of the effects of electrical and mechanical properties of potential filler materials on the performance of slot spiral antennas. Finite element analysis is carried out for a slot spiral that is designed to work in the C-Band range of frequencies (4–8 GHz). Computational simulations performed using commercial software packages ANSYS® and HFSS® show that by using commercially available filler materials the stress concentration factor of the spiral slot can be reduced by 20%. The results from this research enhance the previously introduced advantages of this type of conformal load-bearing antenna structure (CLAS). This CLAS concept provides a promising solution of replacing conventional externally mounted antennas, thus reducing aircraft weight and aerodynamic drag.

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„Antenna arrays, adaptive and smart antennas“. In 2015 International Conference on Antenna Theory and Techniques (ICATT). IEEE, 2015. http://dx.doi.org/10.1109/icatt.2015.7136813.

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Daliri, Ali, Sabu John, Amir Galehdar, Wayne S. T. Rowe und Kamran Ghorbani. „Strain Measurement in Composite Materials Using Microstrip Patch Antennas“. In ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2010. http://dx.doi.org/10.1115/smasis2010-3703.

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In this paper the feasibility of using a circular microstrip patch antenna to detect strain in composite plates and the effects of different materials on sensitivity of the patch antenna are investigated. Also the effect of strain direction on the frequency shift is studied. The theoretical model shows a linear relationship between strain and the shift in the resonant frequency of the antenna in any material. A circular microstrip patch antenna is designed and fabricated to work at 1.5GHz and attached to three different materials for testing. Both Finite Element Analysis (FEA) and experimental tests have been undertaken to corroborate the relationship between strain and frequency shift. The ultimate intention of this work is to configure antennas for the detection of relatively small damage zones in structures and to do so wirelessly.

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Zhou, Li, und Chuanhua Wen. „Smart antenna system“. In Asia Pacific Optical Communications, herausgegeben von Ken-ichi Kitayama, Pierpaolo C. Ghiggino, Kim Roberts und Yikai Su. SPIE, 2008. http://dx.doi.org/10.1117/12.804206.

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Daliri, Ali, Sabu John, Chun H. Wang, Amir Galehdar, Wayne S. T. Rowe und Kamran Ghorbani. „Wireless Strain Sensors Using Electromagnetic Resonators“. In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-7954.

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The concept of wireless passive strain sensors has been introduced in the last few years for applications such as structural health monitoring. This study investigates the use of circular microstrip patch antenna (CMPA) sensors for wireless passive measurement of strain. The strain induced in an aluminium plate was measured wirelessly up to 5 cm away from the sensor using a CMPA made from commercial FR4 substrate, and at a distance up to 20 cm using a CMPA made from Rogers® RT/duroid 6010™. These results show the substrate of antennas is one of the factors affecting the interrogation distance. The interrogation distance between the sensor and the patch antenna was improved significantly using the Rogers® substrate.

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Saleeb, A. A. „Smart antenna techniques applied to UWB array antennas“. In IET Seminar on Ultra Wideband Systems, Technologies and Applications. IEE, 2006. http://dx.doi.org/10.1049/ic:20060517.

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Berichte der Organisationen zum Thema "Smart antenna"

Esener, Sadik. Optical Interconnects for Smart Antenna Driver-Receiver-Switch System for Wireless Communication. Fort Belvoir, VA: Defense Technical Information Center, Dezember 2002. http://dx.doi.org/10.21236/ada412178.

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Kang, Intae, und Radha Poovendran. Design Issues on Broadcast Routing Algorithms using Realistic Cost-Effective Smart Antenna Models. Fort Belvoir, VA: Defense Technical Information Center, Januar 2004. http://dx.doi.org/10.21236/ada459825.

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Paulraj, Arogyaswami. Smart Antennas for Battlefield Multimedia Wireless Networks with Dual Use Applications. Fort Belvoir, VA: Defense Technical Information Center, August 1998. http://dx.doi.org/10.21236/ada357870.

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