scholarly journals Dual-polarization reflectarray in Ku-band based on two layers of dipole arrays for a transmit–receive satellite antenna with South American coverage

2018 ◽  
Vol 10 (2) ◽  
pp. 149-159 ◽  
Author(s):  
Jose A. Encinar ◽  
Rafael Florencio ◽  
Manuel Arrebola ◽  
Miguel Alejandro Salas Natera ◽  
Mariano Barba ◽  
...  
Keyword(s):  
Method Of Moments ◽  
High Performance ◽  
Spectral Domain ◽  
South American ◽  
Radiation Patterns ◽  
Dual Polarization ◽  
Satellite Antenna ◽  
Dielectric Layers ◽  
Reflectarray Antenna ◽  
Ku Band

A 1.1-m reflectarray antenna has been designed, manufactured, and tested to fulfill the requirements of a satellite antenna in Ku-band that provides South-American coverage in Tx and Rx. The reflectarray cells consist of four dipoles for each polarization in two dielectric layers, selected because of their simplicity and high performance. The dipole dimensions are optimized in all the reflectarray cells to accomplish the prescribed radiation patterns, by iteratively calling an analysis routine based on method of moments in spectral domain and local periodicity. The measured radiation patterns of the manufactured antenna have been satisfactorily compared with simulations and with a three-layer reflectarray previously designed, manufactured, and tested for the same mission.

scholarly journals High performance liquid analyte sensing based on Bloch surface wave resonances in the spectral domain

2022 ◽  
Vol 145 ◽  
pp. 107492
Author(s):  
P. Hlubina ◽  
M. Gryga ◽  
D. Ciprian ◽  
P. Pokorny ◽  
L. Gembalova ◽  
...  
Keyword(s):  
Surface Wave ◽  
High Performance ◽  
Spectral Domain ◽  
Bloch Surface Wave

Design of X-Ku band broadband high-performance and high-integration T / R module

2021 ◽  
Author(s):  
Yong-feng Gui ◽  
Lai-fu Jin ◽  
De-zhi Ding ◽  
Qi-lin Xie ◽  
Shi-wei Wu ◽  
...  
Keyword(s):  
High Performance ◽  
Ku Band

Magnetic carbon nanofibers containing uniformly dispersed Fe/Co/Ni nanoparticles as stable and high-performance electromagnetic wave absorbers

2014 ◽  
Vol 2 (40) ◽  
pp. 16905-16914 ◽  
Author(s):  
Jun Xiang ◽  
Jiale Li ◽  
Xionghui Zhang ◽  
Qin Ye ◽  
Jiahuan Xu ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Carbon Nanofibers ◽  
High Performance ◽  
Ni Nanoparticles ◽  
Absorption Properties ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Magnetic Carbon ◽  
Ku Band

Magnetic carbon nanofibers containing uniformly dispersed Fe/Co/Ni nanoparticles (CNF–M) exhibit excellent electromagnetic wave absorption properties from the C-band to the Ku-band.

Design of the Ka-Band Satellite Antenna by Parallel Differential Evolution

2014 ◽  
Vol 556-562 ◽  
pp. 2194-2197 ◽  
Author(s):  
Jin Cui Guo ◽  
Xiao Qiu Liu ◽  
Wei Zhang ◽  
Bin Quan He
Keyword(s):  
Differential Evolution ◽  
Circular Polarization ◽  
Method Of Moments ◽  
Beam Width ◽  
Wide Beam ◽  
Satellite Antenna ◽  
Ka Band ◽  
Left Hand ◽  
Computing Platform

This paper designs a Ka-Band satellite antenna using parallel differential evolution (DE). The antenna is of wide beam-width and left hand circular polarization (LHCP). The electromagnetic numerical value is calculated by the improved software NEC2 based on the method of moments. The parallel differential evolution computing platform consists of some computers and MPI is used as the messaging protocol among computers. The single-arm Ka-Band antenna with 8-segments designed in this method has obtained very good performance including gains, axial ratios and VSWRs in a shorter period.

Design and performance of a microstrip reflectarray on a uniaxial substrate

2002 ◽  
Vol 80 (1) ◽  
pp. 7-17 ◽  
Author(s):  
A Iliadis ◽  
K Siakavara
Keyword(s):  
Electromagnetic Field ◽  
Green's Function ◽  
Method Of Moments ◽  
Dielectric Substrate ◽  
Side Lobe ◽  
Side Lobe Level ◽  
Dual Polarization ◽  
Full Wave ◽  
Wave Technique ◽  
And Performance

A design formulation of microstrip reflectarrays is presented in this paper. Previous published articles, referring to this subject, present results for reflectarrays on a uniform dielectric substrate. In this work microstrip reflectarrays with offset feed, dual polarization, and side-lobe level under control, fabricated on a uniaxial substrate were studied. The method of moments, combined with the full-wave technique, and the corresponding dyadic Green's function is used for the specification of the electromagnetic field scattered by the array. PACS No.: 84.40B

scholarly journals Development of Enabling Technologies for Ku-Band Airborne SATCOM Phased-Arrays

Electronics ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 488
Author(s):  
Alfredo Catalani ◽  
Giovanni Toso ◽  
Piero Angeletti ◽  
Mario Albertini ◽  
Pasquale Russo
Keyword(s):  
Phased Array ◽  
Phased Arrays ◽  
Satellite Communications ◽  
Antenna System ◽  
Array Antenna ◽  
Commercial Product ◽  
Dual Polarization ◽  
Phased Array Antenna ◽  
Radiating Element ◽  
Ku Band

In the paper the development of a fully electronic transmit-receive phased-array antenna system in Ku-band for aircraft communications via satellite is presented. Particular emphasis has been placed in the improvement of the following key elements: a dual-polarization self-diplexing radiating element, a transmit/receive active module with full polarization agility based on a digital vector modulator and a SiGe multinode MMIC. The optimized antenna elements enable a significant improvement towards the realization of a future affordable commercial product for satellite communications.

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