scholarly journals Dual‐band reflected beam steering with single‐layered focusing anisotropic metasurface

2019 ◽  
Vol 13 (9) ◽  
pp. 1498-1502
Author(s):  
Jiaqing Chen ◽  
Yongjiu Zhao ◽  
Lei Xing ◽  
Huijuan Dai ◽  
Xiaofeng Chen ◽  
...  
Keyword(s):  
Beam Steering ◽  
Dual Band

scholarly journals The Global Navigation Satellite Systems Reflectometry (GNSS-R) Microwave Interferometric Reflectometer: Hardware, Calibration, and Validation Experiments

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1019 ◽  
Author(s):  
Raul Onrubia ◽  
Daniel Pascual ◽  
Jorge Querol ◽  
Hyuk Park ◽  
Adriano Camps
Keyword(s):  
Field Experiments ◽  
Beam Steering ◽  
Calibration Procedure ◽  
Global Navigation Satellite Systems ◽  
Dual Band ◽  
Navigation Satellite ◽  
Satellite Systems ◽  
Calibration And Validation ◽  
Global Navigation Satellite ◽  
Validation Experiments

This manuscript describes the Microwave Interferometric Reflectometer (MIR) instrument, a multi-beam dual-band GNSS-Reflectometer with beam-steering capabilities built to assess the performance of a PAssive Reflectrometry and Interferometry System—In Orbit Demonstrator (PARIS-IoD) like instrument and to compare the performance of different GNSS-R techniques and signals. The instrument is capable of tracking up to 4 different GNSS satellites, two at L1/E1 band, and two at L5/E5 band. The calibration procedure of the up- and down-looking arrays is presented, the calibration performance is evaluated, and the results of the validation experiments carried out before the field experiments are shown in this paper.

scholarly journals High Gain Dual-Band Beam-Steering Transmit Array for Satcom Terminals at Ka-Band

2017 ◽  
Vol 65 (7) ◽  
pp. 3528-3539 ◽  
Author(s):  
Sergio A. Matos ◽  
Eduardo B. Lima ◽  
Joana S. Silva ◽  
Jorge R. Costa ◽  
Carlos A. Fernandes ◽  
...  
Keyword(s):  
Beam Steering ◽  
High Gain ◽  
Dual Band ◽  
Ka Band

scholarly journals Dual Band and Beam-Steering Antennas Using Reconfigurable Feed on Sierpinski Structure

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Seonghun Kang ◽  
Chang Won Jung
Keyword(s):  
Beam Steering ◽  
Scale Factor ◽  
Dual Band ◽  
Reflection Coefficients ◽  
Patch Antennas ◽  
Radiation Patterns ◽  
Self Similarity ◽  
5 Ghz ◽  
Microwave Substrate ◽  
Dual Bands

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). The antennas use reconfigurable triple feeds on the same antenna plane to have three beam directions. The same scale factor defines the geometrical self-similarity of the Sierpinski fractal. The proposed antennas are fabricated through three iterations from 1st order to 3rd order and utilize FR-4 (εr= 4.4) for the microwave substrate. The performances of the antennas, such as reflection coefficients and radiation patterns are verified by simulation and measurement. The results show that the properties of the proposed antennas in three orders are similar.

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