Results 241 to 250 of about 53,947 (297)
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SPIE Proceedings, 2008
Recent years the application of free-space laser communication system is become more important.A smart antenna system combines multiple antenna elements with a signalprocessing capability to optimize its radiation and/or reception pattern automatically in response to the signal environment.
Li Zhou, Chuanhua Wen
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Recent years the application of free-space laser communication system is become more important.A smart antenna system combines multiple antenna elements with a signalprocessing capability to optimize its radiation and/or reception pattern automatically in response to the signal environment.
Li Zhou, Chuanhua Wen
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Wireless LAN sensing with smart antennas
2022 16th European Conference on Antennas and Propagation (EuCAP), 2022The paper targets the problem of human motion detection using Wireless Local Area Network devices (WiFi) equipped with pattern reconfigurable antennas. Motion sensing is obtained by monitoring the body-induced alterations of the ambient WiFi signals originated from smart antennas supporting the beam-steering technology, thus allowing to channelize the ...
MSantoboni +5 more
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2004
Analog smart antennas are based on RF analog variable circuit devices controlled with an adaptive criterion and an optimizer algorithm. They are expected to offer dramatically low power consumption and low fabrication cost in smart antennas, especially for battery-operated personal wireless devices.
Takashi Ohira, Jun Cheng
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Analog smart antennas are based on RF analog variable circuit devices controlled with an adaptive criterion and an optimizer algorithm. They are expected to offer dramatically low power consumption and low fabrication cost in smart antennas, especially for battery-operated personal wireless devices.
Takashi Ohira, Jun Cheng
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Smart antenna - phase controlled linear antenna array
2007 19th International Conference on Applied Electromagnetics and Communications, 2007Our aim is to develop a microwave (X-band) antenna whose radiation pattern is electronically controlled. The radiation pattern of regular antennas is determined by the Fourier-transform of the phase and amplitude distribution on the antenna aperture. This radiation pattern is mechanically fixed so its alteration is impossible.
Levente Dudas +2 more
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Antenna gain for adaptive smart antenna systems
1997 IEEE 47th Vehicular Technology Conference. Technology in Motion, 2002We study the antenna gain of an adaptive smart antenna system. The motivation for using the smart antenna systems is to increase the antenna gain and to extend the coverage of the system. Unlike traditional antennas whose gain is fixed, the gain of smart antenna systems depends on the signal processing algorithms used, the signal-to-noise ratio, and ...
null Sang-Youb Kim, null Guanghan Xu
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Jeans Textile Antenna for Smart Wearable Antenna
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE), 2018This paper proposes a design of a dual band textile wearable antenna with miniaturized structure. The textile wearable antenna is designed at ISM band(2.45GHz and 5.8GHz). Choose denim material and copper tape as antenna substrate and radiating element, respectively.
Kai-hong Wang, Jiu-sheng Li
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This chapter explores the transformative impact of smart antennas on modern connectivity, emphasizing their capacity to revolutionize communication through technology convergence. It discusses the core principles and advancements in smart antenna design, examining their applications across diverse domains such as wireless communication, satellite ...
Veerendra Dakulagi +4 more
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Veerendra Dakulagi +4 more
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2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488), 2002
This paper presents a novel hybrid beam steering scheme for mobile cellular applications. In this scheme, a linear equispaced sensor array of N antenna elements at the base station is used to form a fixed beam pattern in a fixed number of directions covering the cell area.
K. Rambabu, R. Rajagopal
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This paper presents a novel hybrid beam steering scheme for mobile cellular applications. In this scheme, a linear equispaced sensor array of N antenna elements at the base station is used to form a fixed beam pattern in a fixed number of directions covering the cell area.
K. Rambabu, R. Rajagopal
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Smart Materials and Structures, 1996
Recent studies have shown that reflector surface adaptation can achieve performance characteristics of the order of phase array antennas without their complexity and cost. This study develops a class of antennas capable of variable directivity (beam steering) and power density (beam shaping).
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Recent studies have shown that reflector surface adaptation can achieve performance characteristics of the order of phase array antennas without their complexity and cost. This study develops a class of antennas capable of variable directivity (beam steering) and power density (beam shaping).
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Proceedings of the 16th International Symposium on Power Semiconductor Devices & IC's, 2004
Summary form only given. The antenna is indispensable in wireless communications. An antenna array is well known for its power in harnessing spatially distributed radio energy for more reliable data reception. Current trends in smart antenna technology primarily focus on mobile environments where fast channel fading is predominant in limiting channel ...
null Yingbo Hua +2 more
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Summary form only given. The antenna is indispensable in wireless communications. An antenna array is well known for its power in harnessing spatially distributed radio energy for more reliable data reception. Current trends in smart antenna technology primarily focus on mobile environments where fast channel fading is predominant in limiting channel ...
null Yingbo Hua +2 more
openaire +1 more source