FDTD analysis of aperture coupled patch antenna arrays

This paper deals with the design of two identical 1 × 4 patch antenna arrays for a linear frequency modulated (LFM) continuous wave (CW) synthetic aperture radar (SAR) prototype. The theoretical design is carried out by using the empirical equations available in the literature, while the design optimization is performed by numerical methods using two commercial full wave simulators. Once the antennas are built they are experimentally characterized and incorporated into a radar prototype implemented at the Ecuadorian Space Institute. The radar is tested in a probing polygon and the horizontal resolution is estimated. A measured azimuthal resolution value very close to the theoretical one is achieved

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Over-the-Air Test of Dipole and Patch Antenna Arrays at 28 GHz by Probing them in the Reactive Near-Field

2020 95th ARFTG Microwave Measurement Conference (ARFTG) ◽

10.1109/arftg47271.2020.9241370 ◽

2020 ◽

Author(s):

Utpal Dey ◽

Jan Hesselbarth ◽

Jose Moreira ◽

Krzysztof Dabrowiecki

Keyword(s):

Antenna Arrays ◽

Patch Antenna ◽

Near Field

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Conformal Patch Antenna Arrays Design for Onboard Ship Deployment Using Genetic Algorithms

Advances in Power Electronics ◽

10.1155/2013/960514 ◽

2013 ◽

Vol 2013 ◽

pp. 1-5 ◽

Cited By ~ 4

Author(s):

Stelios A. Mitilineos ◽

Symeon K. Symeonidis ◽

Ioannis B. Mpatsis ◽

Dimitrios Iliopoulos ◽

Georgios S. Kliros ◽

...

Keyword(s):

Genetic Algorithm ◽

Antenna Arrays ◽

Patch Antenna ◽

High Performance ◽

Aerodynamic Drag ◽

A Priori ◽

Conformal Antennas ◽

Antenna Performance ◽

And Performance ◽

Aerodynamic Drag Reduction

Conformal antennas and antenna arrays (arrays) have become necessary for vehicular communications where a high degree of aerodynamic drag reduction is needed, like in avionics and ships. However, the necessity to conform to a predefined shape (e.g., of an aircraft’s nose) directly affects antenna performance since it imposes strict constraints to the antenna array’s shape, element spacing, relative signal phase, and so forth. Thereupon, it is necessary to investigate counterintuitive and arbitrary antenna shapes in order to compensate for these constraints. Since there does not exist any available theoretical frame for designing and developing arbitrary-shape antennas in a straightforward manner, we have developed a platform combining a genetic algorithm-based design, optimization suite, and an electromagnetic simulator for designing patch antennas with a shape that is not a priori known (the genetic algorithm optimizes the shape of the patch antenna). The proposed platform is further enhanced by the ability to design and optimize antenna arrays and is intended to be used for the design of a series of antennas including conformal antennas for shipping applications. The flexibility and performance of the proposed platform are demonstrated herein via the design of a high-performance GPS patch antenna.

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