Results 61 to 70 of about 132 (115)

Localization and communication in smart radio environments [PDF]

In recent years, the concept of the Smart Radio Environment (SRE) has emerged as a transformative approach in wireless communications. This innovative paradigm shifts the perception of the wireless environment from an uncontrollable entity to an active ...
Lotti, Marina <1995>
core   +1 more source

RETRODIRECTIVE ARRAY TECHNOLOGY [PDF]

Progress In Electromagnetics Research B, 2008
Yu-Chun Guo, Xiao-Wei Shi, Lei Chen
openaire   +1 more source

Design of a Long-Range and Retrodirective Tunneling Tag

The rise of the Internet of Things has increasingly integrated radio-frequency identification (RFID) technology in many practical applications that deal with localization, communication, and more.
Saetia, Christopher Austin
core  

Retrodirective arrays for wireless power transfer applications

, 2018
This dissertation presents a novel one-dimensional, dual frequency, active retrodirective array for wireless power transfer applications. A retrodirective array automatically scans its transmitting antenna beam in the direction of a transmitter ...
Fairouz, Mohammad
core  

A 2-D Fully Polarized Van Atta Array Based on Wide-Beam Tri-Polarized Antennas. [PDF]

Micromachines (Basel)
Pan J, Chen L, Zhao S, Zhang T.
europepmc   +1 more source

A frequency-agile retrodirective tag for large-scale sub-terahertz data backscattering. [PDF]

Nat Commun
Kludze A, Kono J, Mittleman DM, Ghasempour Y.   +3 more
europepmc   +1 more source

Circular Retrodirective Arrays for Launch Vehicles

, 2019
This paper will present recent findings relating to the feasibility of a circular self-tracking (retrodirective) antenna array for launch vehicle applications. Circular retrodirective arrays (RDAs), are comprised of a single ring of elements placed on a cylindrical ground plane. A breadboard of a circular RDA has already been built and measured at QUB.
openaire   +1 more source

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Development of a Retrodirective PARC for ALOS/PALSAR Calibration

IEEE Transactions on Geoscience and Remote Sensing, 2003
A novel PARC of Van Atta array design is developed for polarimetric calibration of PALSAR onboard the ALOS satellite. The PARC consists of four dual-polaraized 3/spl times/3-cross-dipole subarrays. The Van Atta array configuration combining with dual-polarized nature of the subarrays provides the PARC the depolarizing and retrodirective characteristics
exaly   +4 more sources

Circularly symmetric retrodirective antenna system

IEEE Transactions on Antennas and Propagation, 1971
A method is described by which automatically retrodirective performance may be obtained from circular arrays and circularly continuous aperture antennas. The method is also directly applicable to cylindrical antennas for two-dimensional retrodirectivity and is generalized to include a method for obtaining three-dimensional retrodirectivity.
exaly   +2 more sources

Reflection characteristics of a retrodirective PARC

IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2004
Reflection characteristics of a retrodirective PARC (polarimetric active radar calibrator) were measured in a radio anechoic chamber. The reflection beamwidth was twice as wide as that of a conventional array reflector of the same size, and the measured RCS was 40.8 dBm/sup 2/ that almost agreed with the predicted value of 41.5 dBm/sup 2/.
Masaharu Fujita, Sota Nakamura, Chikage Murakami   +2 more
openaire   +1 more source