Е.V. Ovchinnikova - Ph.D. (Eng.), Associate Professor, Moscow Aviation Institute (National Research University). E-mail: oea8888@gmail.com P.А. Shmachilin - Ph.D. (Eng.), Associate Professor, Moscow Aviation Institute (National Research University). E-mail: shmachilin@gmail.com S.G. Kondrat\'eva - Ph.D. (Eng.), Assistent, Moscow Aviation Institute (National Research University). E-mail: kondratieff89@yandex.ru E.V. Gadzhiev - Senior Research Scientist, JSC « Research Institute for Electromechanics ». E-mail: otd24@niiem.ru

At present, there is an active process of miniaturization of whole space technology, including on-board equipment. On-board antenna-feeder devices also considered the process of miniaturization. Considering number of features of on-board antennas, there is an actual, modern task of developing a small-sized, low-profile, reliable, simple and high-tech antenna system of small spacecrafts. Proposed the use microstrip antennas to solve this task. This type of antennas have a low mass, volume, cost of the production, sim-plicity of construction etc. Described the method of calculating the frequency characteristics of the microstrip antenna. The main purpose of this article is to design the method of approximate calculation of directional characteristics of on-board microstrip antenna for small spacecrafts.

 

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