The growing development of telecommunications, especially mobile telecommunications, has intensified research into microfiber antennas in the last years, since these have unique properties as well as a wide range of applications. The research in the field of wearable technology is impelled by the demand for increasingly light and flexible devices, where electronic components are entirely embedded in their textile structures. The knitted fabrics have the necessary elasticity to create adaptive and sporty pieces, allowing high mobility and comfort to its users. The concept of textile antennas is based on malleability and, for this reason, they can have great utility in applications where the stiffness of traditional antennas is considered a limitation, especially in military or biomedical garments. This study aims to determine the properties of the natural and synthetic fibers knitted fabric for use in microwave devices, presenting the materials and methods used in the research to the prototyping and simulation of a microstrip antenna. Four knitted fabrics with different structures (Jersey and Simple Piquet) and fiber compositions (Cotton and Cotton with Polyamide) were selected. The determination of the electrical properties was performed through the coaxial probe method to obtain the permittivity and tangent loss properties, and the determination of the physical properties according to the technical standards, where the textile properties (weight, dimensional stability, yarn count and tensile strength) of the analyzed samples were determined. The results were analyzed according to the proposed application and the CO_Piquet presented the lower loss tangent and better dimensional stability, the microstrip antenna was dimensioned to a frequency of 2.45 GHz according to the transmission line and resonant cavity method, and simulated in the HFSS where loss return, radiation diagrams and current density parameters was obtained.

电信，尤其是移动电信的不断发展，由于它们具有独特的特性以及广泛的应用，在最近几年中加强了对微纤维天线的研究。可穿戴技术领域的研究受到对日益轻便和灵活的设备的需求的推动，在这些设备中，电子组件已完全嵌入其纺织结构中。针织物具有必要的弹性，可以制造出适应性和运动性的单品，从而为使用者提供高机动性和舒适感。纺织天线的概念是基于延展性的，因此，它们在那些认为传统天线的刚度受到限制的应用中具有很大的实用性，尤其是在军事或生物医学服装中。这项研究旨在确定用于微波设备的天然和合成纤维针织物的性能，并将研究中使用的材料和方法介绍给微带天线的原型设计和仿真。选择了四种具有不同结构的针织面料（Jersey和Simple Piquet）和纤维成分（棉和含聚酰胺的棉）。通过同轴探针法确定电性能，以获得介电常数和切线损耗性能，并根据技术标准确定物理性能，其中纺织品性能（重量，尺寸稳定性，纱线支数和拉伸强度）确定了所分析样品的）。