عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
TLpq2457959260
انگلیسی
Magnetically Tuned 3D-Printed Antenna Arrays
[Thesis]
Alhassoon, Khaled A.
Daryoush, Afshin
Drexel University
2020
283
Ph.D.
Drexel University
2020
3D additive printing technology has been employed recently for manufacturing of a wide variety of radio frequency (RF) circuits; particularly it is very attractive for composite manufactured structures in conformal (non-planar) shapes, such as magnetically tuned antenna arrays for both civilian and military applications. Low cost 3D additive printing of ferromagnetic materials and its tuning using applied external magnetic field eliminates the loading effects of electrical control on the antenna radiation pattern. Composite substrates using low-loss dielectric material filaments Acrylonitrile Butadiene Styrene (ABS) and Polylactic Acid (PLA) combined with ferromagnetic nanoparticle powders (FeCo, NiFe2O4, and ZnFe2O4) and metallic microstrip traces (copper and Ti3C2Tx as 2D MXene) is used to realize magnetically tuned radiating elements. Design modeling of 3D printed magnetically tuned antennas depends on accurate RF properties of 3D printed composite substrates in term of complex permittivity, complex permeability, and metal conductivity. Primary efforts are made by extracting RF characteristics of composite substrate in terms of filling factor (10% - 100%), printing patterns (rectilinear, triangular, ...), and metallic layer thicknesses. Accurate extractions are presented using curve fitting of simulated to measured scattering parameters of custom designed circuits. The extraction was performed over broadband (1-10GHz) using microstrip transmission line (TL) and narrowband using annular ring resonator (ARR) (2.4GHz and 5.4GHz) and metallic cavity resonator (2.4GHz). A statistical analysis of three samples of each category is performed to have an accurate extraction process. According to our extraction, the ABS filament had lower loss tangent than PLA. The complex permittivity of ABS filaments with triangular pattern and 10% infill had an average value of 1.3 6
Electrical engineering
Electromagnetics
Materials science
Nanotechnology
Operations research
Alhassoon, Khaled A.
Daryoush, Afshin
مطالعه متن کتاب p
[Thesis]
276903
a
Y
