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Three-dimensional (3D) printing technology based antenna structures have many promising applications. In this study, a triple mode circular waveguide horn antenna with corrugated chokes is presented. In this antenna configuration, three individual modes consisting of TE11, TM01, and TE21 are generated in a single structure. The horn antenna prototypes used precision milling and 3D printing process...
A compact W-band cylindrical waveguide horn antenna with polarizer structure is designed which offers wideband left-hand circular polarization (LHCP) and symmetric radiation pattern. It has wideband impedance matching below S11= −15 dB and axial ratio below 1.8 dB from 79.5 GHz to 87.5 GHz. This horn is used as a feed source for an offset parabolic reflector. The reflector antenna provides peak RHCP...
A circularly polarized 1×16 linear array antenna with beam scan range of +/−50° is investigated. The single antenna element is an aperture coupled microstrip patch with via walls backing and is fed using a sequentially rotated feedline. This radiating element helps in reduction of the inter-element spacing and overall array size miniaturization in addition to the acceptable axial ratio performance...
A triple mode circular waveguide horn antenna with corrugated chokes manufactured using 3D printing technology is presented. The three modes are TE11, TM01, and TE21 which are generated in a single structure. The 3D printed antenna used PC-ABS material coated with conductive silver ink. The antenna achieved a common simulated and measured matching bandwidth of 7.40GHz to 7.89GHz for all the three...
Two sequentially rotated, four stage, wideband circularly polarized high gain microstrip patch array antennas at Ku-band are investigated and compared by incorporating both unequal and equal power division based feeding networks. Four stages of sequential rotation is used to create 16×16 patch array which provides wider common bandwidth between the impedance matching (S11 < −10dB), 3dB axial ratio...
Printed antennas on flexible substrate material are highly desirable for flexible circuits and wearable applications. An ultra-wideband (UWB) printed planar monopole antenna operating at 3.4–12 GHz was designed, modeled, fabricated, and tested for scattering parameters and radiation pattern response. The measured reflection coefficient magnitude for the fabricated antenna exhibits a bandwidth of 8...
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