Results 221 to 230 of about 3,049 (262)
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Pattern reconfigurable compact antenna
2009 IEEE MTT-S International Microwave Workshop on Wireless Sensing, Local Positioning, and RFID, 2009This paper presents a design of an compact antenna providing two diverse radiation patterns, which results from the excitation of two different modes. The antenna consists of a capacitively fed annular ring microstrip antenna, which can be shorted via shorting pins on its edges using pin diodes.
Bartolić, Juraj, Debogović, Tomislav
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On the Applications for a Radiation Reconfigurable Antenna
Second NASA/ESA Conference on Adaptive Hardware and Systems (AHS 2007), 2007In this work, applications involving a radiation reconfigurable antenna are presented and discussed. The antenna is capable of reconfiguring its radiation pattern from broadside to endfire over a common impedance bandwidth. After outlining the operation and radiation behavior of the single element its use in multiple antenna systems, such as multiple ...
Tyrone L. Roach +2 more
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Multistandard reconfigurable PIFA antenna
Microwave and Optical Technology Letters, 2006In this article, a frequency reconfigurable antenna using the ON/OFF states of a MEMS (micro‐electro‐mechanical system) switch is presented. This structure is based on a planar inverted‐F antenna (PIFA), designed with an L‐shaped open slot etched upon its main plate.
Panaia, P. +5 more
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Piezoelectric reconfigurable antenna
2013 Loughborough Antennas & Propagation Conference (LAPC), 2013A novel approach to tuning an inverted F antenna is investigated by using PZT materials that switch elements into contact using a dc control voltage to reconfigure the IFA structure. This produces a prototype reconfigurable antenna which can be finely tuned over a 9% bandwidth.
Khalid Aljonubi +3 more
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International Journal of RF and Microwave Computer-Aided Engineering, 2001
New architectures for microelectromechanical system (MEMS) reconfigurable Vee-antennas and RF switches are presented. The planar antenna structure can be dynamically reconfigured to steer the radiation beam or change the shape of the beam using electrically-controlled microactuators. The radiation patterns and antenna impedance were investigated with a
Jung-Chih Chiao +5 more
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New architectures for microelectromechanical system (MEMS) reconfigurable Vee-antennas and RF switches are presented. The planar antenna structure can be dynamically reconfigured to steer the radiation beam or change the shape of the beam using electrically-controlled microactuators. The radiation patterns and antenna impedance were investigated with a
Jung-Chih Chiao +5 more
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Wirelessly reconfigurable antenna
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015In this paper, we describe a reconfigurable antenna with switches on the antenna elements that are powered wirelessly, by the antenna itself. Control signals for individual switches are part of the antenna transmission. We describe the theory of operation and provide simulation results for a three-element parasitic dipole antenna array with two ...
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A Reconfigurable Leaky Wave Antenna
2023 33rd International Conference Radioelektronika (RADIOELEKTRONIKA), 2023Jan Machac +2 more
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Wideband Pattern-Reconfigurable Antenna With Switchable Monopole and Vivaldi Modes
IEEE Antennas and Wireless Propagation Letters, 2023Jingjian Huang +2 more
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