Факультет Телекомунікацій та радіотехніки

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Browsing Факультет Телекомунікацій та радіотехніки by Author "Fokin R."

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    НИЗЬКО-ПРОФІЛЬНА ШИРОКОСМУГОВА ДИСК-КІЛЬЦЕВА АНТЕНА
    (ОНАЗ імені О. С. Попова, 2018) Сідень С. В.; Siden S.; Фокін Р. А.; Fokin R.
    Представлені топологія та описані основні характеристики широкосмугової низько-профільної диск-кільцевої антени, отримані на основі комп’ютерного моделювання. Основними особливостями антени є її широкосмугові властивості (2.2…6 ГГц), як по вхідному імпедансу, так і по характеристикам спрямованості (коефіцієнту спрямованої дії та діаграмі спрямованості). Крім того антена має відносно малі розміри та достатньо проста у реалізації. The development of modern wireless technologies leads to the need for the development of antennas that have broadband properties, both in terms of input impedance and directional characteristics(directivity, directional pattern). In addition, the antenna should be small in size and weight, and also be easy to manufacture. The topology of a lowprofile broadband antenna consisting of a thin ring in the inner region of which, in the plane of the middle section of which, a disk 1 mm thick is disposed. All elements of the antenna are made of a good conductive material. The antenna is powered in the region of the minimum distance between the ring and the disk by a coaxial line. The presented results are obtained by calculating electrodynamic parameters based on the computer simulation in the environment of the FEKO software complex. The principle of the calculation module is based on solving the diffraction problem by the method of moments. The problem of determining the amplitude-phase distribution of surface currents on antenna elements is reduced to solving a system of linear algebraic equations. On this basis, the amplitude distribution of fields in the far field and the directivity coefficient were calculated, and the frequency dependences of the input impedance and the modulus of the reflection coefficient at the antenna input were determined. As shown by the results of numerical analysis and experiment - this antenna has wideband properties both in terms of input impedance and directional pattern. For the investigated modifications, the operating range lies in the range from 2.2 to 6 GHz. One of the main features and advantages of this antenna is the possibility of its optimization when coordinated with the supply line by changing the width of the ring and / or the distance between it and the disc. It should also be noted the simplicity in the manufacture of antennas and relatively small dimensions.