Results 101 to 110 of about 716,699 (142)
Retrodirective Array Performance in the Presence of Near Field Obstructions
IEEE Transactions on Antennas and Propagation, 2010 We investigate the situation where there are obstructing elements present in the near field of a retrodirective array. We describe three scattering cases, (1) by an array of straight wires, (2) by low loss medium density fibre board partially obscuring ...
Vincent Fusco, Neil Buchanan
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Reflector effects on the performance of a retrodirective antenna array
IEEE Transactions on Antennas and Propagation, 2000 This paper presents modeling strategies to determine the operating characteristics of a heterodyne phase-conjugate retrodirective Van Atta array in the presence of a plane reflector. The models used are based on physical and geometrical optics principles.
V F Fusco
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Use of an active retrodirective antenna array as a multipath sensor
, 1997 The use of an active retrodirective antenna as an indicator of multipath propagation effects is investigated by the authors. It is shown that the flat azimuthal gain response normally associated with a retrodirective antenna array can be significantly ...
V F Fusco
exaly +3 more sources
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Frequency stability in adaptive retrodirective arrays
IEEE Transactions on Aerospace and Electronic Systems, 2000The frequency stability of communications or remote sensing systems using phase conjugation as a means of retrodirective signaling is developed under the influence of constant rectilinear motion. The results indicate that for dynamic mobile platforms such as aircraft, helicopters, and ground vehicles the retrodirective properties of phase conjugating ...
Leo D. DiDomenico, Gabriel M. Rebeiz
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A retrodirective null-scanning array
2010 IEEE MTT-S International Microwave Symposium, 2010A full-duplex self-steering array using power detection and phase shifting is presented. The system utilizes two sub-arrays to autonomously steer its beam toward an interrogating signal. A two-element null-scanning array is used for power detection where the interrogator direction is determined by the location where minimum power is detected ...
R. T. Iwami +4 more
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Retrodirective arrays for wireless communications
IEEE Microwave Magazine, 2002This article reports the recent progress in active and passive retrodirective arrays using phase-conjugation techniques. The arrays presented here are designed for wireless communications in microwave bands and have other features in addition to self-phasing aspects such that they can be applied to practical communication systems.
R.Y. Miyamoto, T. Itoh
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Redirective and retrodirective antenna arrays
IEEE Transactions on Antennas and Propagation, 1969The problem considered is the redirection of a time-varying signal from one specified point to another by a set of arbitrarily spaced antenna array elements. The necessary and sufficient condition for signal redirection is determined without restricting the analysis to a monochromatic signal.
E. Putzer, R. Ghose
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A study of retrodirective array performance in the presence of multipath
Proceedings. Second Annual Conference on Communication Networks and Services Research, 2004., 2004The paper attempts to analyze the performance of a heterodyne phase conjugate retrodirective transceiver for full duplex communications in the presence of multipath signals and amplitude and phase perturbations across a four element antenna array. Simulation results are given and it is shown that the retrodirective array improves multipath fading in a ...
Chris Loadman, Zhizhang Chen
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A Retrodirective Antenna Array With Polarization Rotation Property
IEEE Transactions on Antennas and Propagation, 2014zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhou, Hao +7 more
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Experiments With Retrodirective Arrays
Optical Engineering, 1982A summary of experiments is presented which show how retrodirective arrays have been used to approximate phase conjugation.
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