Results 1 to 10 of about 777 (161)
SATCOM Retrodirective Array [PDF]
IEEE Transactions on Microwave Theory and Techniques, 2016 We present an in-depth look at the challenges involved in using analog retrodirective arrays for satellite communications (SATCOM). The main technical issues surrounding the development of a retrodirective (self-steering) SATCOM system are given and techniques for mitigating these issues are provided.
Vincent Fusco
exaly +6 more sources
Reconfigurable metasurface array for diverse retrodirective reflections and radar cross section reduction [PDF]
NanophotonicsRetroreflectors can scatter the arbitrarily incident wave back to incoming direction, demonstrating great potential in wireless communication. However, there are limitations in adaptive retroreflection and polarization modulation with the existing ...
Wei Wen Yue +4 more
doaj +3 more sources
Maxwell Fisheye Lens Based Retrodirective Array. [PDF]
Sci Rep, 2019 AbstractA Maxwell fisheye lens using parallel plate index grading is presented in this study to develop a passive retrodirective antenna array. As a proof-of-concept a design frequency of 10 GHz was selected for fabrication and experiment. The design principals of the lens are discussed, which enables 85% energy flow at the drain probe (also referred ...
Abbasi MAB, Fusco VF.
europepmc +8 more sources
Developments in retrodirective array technology
IET Microwaves, Antennas and Propagation, 2013 There has been significant interest in retrodirective antennas, especially considering the wealth of applications that could be significantly enhanced, or created, by the use of such technology. There is enormous potential for retrodirective antennas where complicated automatic tracking systems would benefit from being replaced by much simpler systems.
Vincent Fusco, Neil Buchanan
exaly +4 more sources
A Wide-Angle and PON Fully Polarimetric Retrodirective Array at the X Band [PDF]
MicromachinesA new type of fully polarimetric retrodirective array (RDA) using a PON-type structure is proposed in this paper. The fully polarimetric property is the result of the proposed phase conjugation circuits, which perform phase conjugation processing on the ...
Shuangdi Zhao +3 more
doaj +2 more sources
Simple Millimeter Wave Identification System Based on 60 GHz Van Atta Arrays [PDF]
Sensors, 2022 The paper presents a proof-of-concept of a millimeter-wave identification system based on Van Atta array tags in the 60 GHz band. For interrogation of the tags, a vector network analyzer and a measurement transceiver were employed in alternative test ...
Kamil Trzebiatowski +3 more
doaj +2 more sources
Retrodirective Antenna for Inter-Satellite Data Transmission [PDF]
IEEE Access, 2020 A new X-band retrodirective antenna based on superheterodyne mixer and phase conjugating technology is proposed for inter-satellite data transmission in this paper.
Xiaoli Wei, Lianxing He, Lei Chen
doaj +3 more sources
Channel estimation for backscatter communication systems with retrodirective arrays
IET CommunicationsBackscatter communications, which originated from World War II, have been widely applied in the logistics domain, and recently attract emerging interest from both academic and industrial circles.
Yunping Mu +6 more
doaj +2 more sources
A frequency-agile retrodirective tag for large-scale sub-terahertz data backscattering [PDF]
Nature CommunicationsBackscattering is a promising power-efficient communication technique providing sustainable wireless links with a low carbon footprint. This approach is a critical enabler for dense IoT networks, which are forecast to grow to 41 billion by 2025. However,
Atsutse Kludze +3 more
doaj +2 more sources
Orientation Controllable RCS Enhancement Electromagnetic Surface to Improve the Road Barriers Detectability for Autonomous Driving Radar [PDF]
SensorsAn orientation controllable radar cross section (RCS) enhancement surface is presented in this paper, which can be used to improve the road pile detectability of on-board microwave radar for autonomous driving system.
Yanbin Chen +4 more
doaj +2 more sources