Título: Microstrip Antennas - Arrays
Descripción automática: In this video, the speaker, an expert from the Technical University, discusses the principles and applications of microstrip antennas, specifically focusing on antenna arrays. The purpose of these arrays is to increase the gain, improve beam shaping, and allow for real-time beam steering without physical movement, suitable for adaptive or smart antennas. The design offers various degrees of freedom, including the choice of elements, their geometric configuration, and the distribution and excitation of each element.
Microstrip lines are highlighted as the conventional method for feeding microstrip antenna arrays, with the possibility of using different layer configurations to accommodate various network geometries. The types of feed include series and parallel, as well as combinations of the two. Feeding network design is crucial for ensuring proper input matching and achieving the desired amplitude and phase distributions, especially at high frequencies. Low-loss substrates, impedance transformers, and power dividers play an essential role in maintaining efficiency.
One specific example provided is a X-band, four-element array designed for uniform amplitude and phase with particular attention to mutual coupling, which can be dependent on substrate properties and element spacing. The speaker also explains that various network configurations can impact power division and efficiency.
The video concludes with an overview of a practical antenna array design that includes power dividers and the use of low loss materials to achieve reasonable bandwidth and efficiency. Despite its high side lobe level, which is typical for a uniform array, the design boasts small dimensions and very low weight.
Autor/a: Peixeiro Custódio
Curso: Este vídeo es el 32/62 del curso European School of Antennas. [ Ссылка ]
+ Universitat Politècnica de València UPV: [ Ссылка ]
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#microstrip antennas #arrays
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