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This paper presents design and development of wide band dual polarised active phased array antenna at C band generating 41 beams for Radar Imaging Satellite (RISAT). Large antenna array of size 6m×2m has been divided into smaller tiles and each tile has been fed by active distributed beam forming networks. Simulation & measured performance of the antenna has been presented meeting bandwidth of...
The paper presents the design of a broadband microstrip antenna array operating within 24 GHz frequency range. The designed antenna array is destined for application in FMCW radar modules, in which 2 GHz frequency deviation has been assumed. The antenna has been designed as a 4 × 4 array to achieve appropriate gain. To achieve broadside beam within broad frequency range a parallel feeding network...
Przedmiotem pracy jest zbadanie wpływu zmian grubości oraz przenikalności poszczególnych warstw dielektryka w strukturze anteny planarnej wielowarstwowej na szerokość pasma jej pracy. Omówione zostaną zjawiska zachodzące w wielowarstwowej strukturze planarnej zasilanej szczelinowo. Przedstawiony zastanie wpływ zmian wartości tych parametrów poszczególnych warstw na szerokość pasma pracy.
In this paper, the problem is investigated in a more general form, involving phase center location and polarization of multimode, multilayer, circular microstrip antennas. It is shown that, these parameters can be controlled by amplitude and phase excitations of the modes, in particular, when the first three modes are being excited, which are the TM11, TM21 and TM02. It is also shown that, the phase...
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