Results 71 to 80 of about 21,890 (197)
Frequency-Reconfigurable Antenna Using Metasurface
IEEE Transactions on Antennas and Propagation, 2014 A frequency-reconfigurable antenna designed using metasurface (MS) to operate at around 5 GHz is proposed and studied. The frequency-reconfigurable metasurfaced (FRMS) antenna is composed of a simple circular patch antenna and a circular MS with the same diameter of 40 mm (0.67 λ) and implemented using planar technology.
Zhu, HL, Liu, XH, Yuk, TTI, Cheung, SW
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PATCH ANTENNA WITH RECONFIGURABLE POLARIZATION
Progress In Electromagnetics Research C, 2009 A reconfigurable patch antenna consisting of a square patch with two cross-shaped diagonal slots is presented. The proposed design approach is based on the use of two pairs of switches in order to obtain both frequency and polarization reconfigurability.
MONTI, GIUSEPPINA +2 more
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A Broadband Bow-Tie Cavity-Backed Slot for Traveling-Wave Arrays in the Millimeter-Wave Band [PDF]
, 2019 The use of bow-tie geometries to enhance the characteristics of a radiating element previously proposed by the authors is presented. The previous element consisted of a broadband cavity-backed slot in transmission configuration. The bow-tie shape of the
Abdo Sánchez, Elena +2 more
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Pixel reconfigurable antennas: Towards low-complexity full reconfiguration
2016 10th European Conference on Antennas and Propagation (EuCAP), 2016 The explosive growth of wireless communications has brought new requirements in terms of compactness, mobility and multi-functionality that make reconfigurable antennas excellent candidates for future wireless networks. Pixel antennas are particularly interesting due to their ability to dynamically reshape its active surface to change their properties.
Rodrigo López, Daniel +3 more
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International Journal of Antennas and PropagationThe rapid development of wireless technology has heightened the requirement for antenna performance. Traditional antennas, characterized by their static performance, are no longer sufficient to accommodate the dynamic requirements of modern wireless ...
Mingyue Zhang, Guangyu Xu, Renjing Gao
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Dual Band and Beam-Steering Antennas Using Reconfigurable Feed on Sierpinski Structure
International Journal of Antennas and Propagation, 2015 Fractal patch antennas based on the Sierpinski structure are studied in this paper. The antennas operate at dual bands (around 2 and 5 GHz) and are designed to steer the beam directions at around 5 GHz band (the first harmonic).
Seonghun Kang, Chang Won Jung
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TriG - A GNSS Precise Orbit and Radio Occultation Space Receiver [PDF]
, 2009 The GPS radio occultation (RO) technique [1] produces measurements in the ionosphere and neutral atmosphere [2] that contribute to monitoring space weather and climate change; and improving operational weather prediction.
Esterhuizen, Stephan +6 more
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Electronically Tunable Antenna Pair and Novel RF Front-End Architecture for Software-Defined Radios
EURASIP Journal on Advances in Signal Processing, 2005 This paper proposes a novel RF front-end architecture for software-defined radios (SDRs) based on an electronically tunable antenna pair controlled by an antenna control unit (ACU) consisting of field effect transistor (FET) switches and a field ...
Oh Sung-Hoon +5 more
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A novel green antenna phase-shift system with data acquisition boards [PDF]
, 2012 A novel green phase shifter system is proposed in this research. The system is developed by a combination of reconfigurable beam steering antennas and data acquisition (DAQ) boards. A combination of two reconfigurable beam steering antennas, located side-
Abd. Rahim, Sharul Kamal +9 more
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Bandwidth Performances of Reconfigurable Reflectarrays: State of Art and Future Challenges [PDF]
Radioengineering, 2018 Reconfigurable antennas allow to meet the increasing demands of modern RF communication systems for reconfiguration capabilities, such as beam-steering, multi-band operation, polarization flexibility or frequency agility.
S. Costanzo +4 more
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