Antenna array of waveguide horns with an E-plane aperture, as well as horns with an aperture in the E- and H-planes

• Published in: Physics of Wave Processes and Radio Systems
• Main Authors: Yuri G. Pasternak, Vladimir A. Pendyurin, Dmitry K. Proskurin, Kirill S. Safonov
• Format: Article in Journal/Newspaper
• Language: English; Russian
• Published: Povolzhskiy State University of Telecommunications & Informatics 2024
• Subjects: mobile and airborne satellite communications; linear antenna arrays; waveguide horns; Physics; QC1-999; Electronics; TK7800-8360; Arctic Ocean; taiga
• Online Access: https://doi.org/10.18469/1810-3189.2024.27.2.91-99; https://doaj.org/article/703b763d0f124c7d8a988c34915774b1

Background. Currently, in connection with the conduct of a special military operation, the issue of the availability of inexpensive mobile terminals for high-speed satellite communications of domestic production is very relevant, as well as due to the large extent of the territories of our country, there are a number of areas where cellular communication is absent, for example, the Taiga, the Arctic, the territory of the Arctic Ocean, etc. Therefore, the only possible connection in these territories is satellite communication. Aim. Development of a linear equidistant antenna array with equal amplitude and common-mode excitation for a mobile satellite communication terminal. Methods. The antenna array was designed from the open ends of waveguides with a cross section of 19 × 11 mm with air filling. Adjacent pairs of radiating waveguides are powered by an E-planar divider: the waveguide is divided in half in height by a thin metal diaphragm, wave reflections from which are insignificant; further, in each half of the power divider, height-separated right and left turns and smooth transitions in the E-plane are implemented – an extension from 5,25 mm to 11 mm. Results. An antenna array with a period of 19,5 mm has been developed. Overall dimensions: opening width – 624 mm, height – 12 mm, depth – 118 mm. A feature of the antenna array design is the use of smooth asymmetric transitions in the E-plane according to the exponential law; in the opening of the headlights, waveguide asymmetric horns alternate, with a period equal to 4 values of the width of the waveguides, taking into account the width of their narrow walls, expanding in the upper (2 adjacent radiators) and lower (next 2 radiators) directions. Conclusion. The advantage of using an approach to the construction of linear antenna arrays powered by multichannel power dividers is the ability to minimize the depth of the antenna system. The main disadvantages are the constructive and technological complexity of power dividers and significant power losses with a ...