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    Mathematical model of electrical and magnetic component of the field radiation of elements by a convex antenna array

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    Π£ статті Ρ€ΠΎΠ·Ρ€ΠΎΠ±Π»Π΅Π½ΠΎ ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π½Ρƒ модСль Π΅Π»Π΅ΠΊΡ‚Ρ€ΠΈΡ‡Π½ΠΎΡ— Ρ– ΠΌΠ°Π³Π½Ρ–Ρ‚Π½ΠΎΡ— складових поля Π²ΠΈΠΏΡ€ΠΎΠΌΡ–Π½ΡŽΠ²Π°Π½Π½Ρ Π΅Π»Π΅ΠΌΠ΅Π½Ρ‚Ρ–Π² ΠΎΠΏΡƒΠΊΠ»ΠΎΡ— Π°Π½Ρ‚Π΅Π½Π½ΠΎΡ— Ρ€Π΅ΡˆΡ–Ρ‚ΠΊΠΈ. ΠžΡ‚Ρ€ΠΈΠΌΠ°Π½Ρ– Π²ΠΈΡ€Π°Π·ΠΈ Π΄ΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‚ΡŒ ΠΏΠΎΠ±ΡƒΠ΄ΡƒΠ²Π°Ρ‚ΠΈ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠΈ Ρ‡ΠΈΡΠ΅Π»ΡŒΠ½ΠΎΠ³ΠΎ модСлювання поля Π²ΠΈΠΏΡ€ΠΎΠΌΡ–Π½ΡŽΠ²Π°Π½Π½Ρ ΠΎΠΏΡƒΠΊΠ»ΠΎΡ— Π°Π½Ρ‚Π΅Π½Π½ΠΎΡ— Ρ€Π΅ΡˆΡ–Ρ‚ΠΊΠΈ Π² Π΄Π°Π»Π΅ΠΊΡ–ΠΉ, ΠΏΡ€ΠΎΠΌΡ–ΠΆΠ½Ρ–ΠΉ Ρ‚Π° Π±Π»ΠΈΠΆΠ½Ρ–ΠΉ Π·ΠΎΠ½Ρ–. ΠŸΡ–Π΄ час Ρ€ΠΎΠ·Ρ€ΠΎΠ±ΠΊΠΈ ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π½ΠΎΡ— ΠΌΠΎΠ΄Π΅Π»Ρ– вваТалося, Ρ‰ΠΎ Π²Π½ΡƒΡ‚Ρ€Ρ–ΡˆΠ½Ρ Π·Π°Π΄Π°Ρ‡Π° для ΠΊΠΎΠΆΠ½ΠΎΠ³ΠΎ Π· Π΄ΠΈΠΏΠΎΠ»Ρ–Π², Ρ‰ΠΎ Π²Ρ…ΠΎΠ΄ΡΡ‚ΡŒ Π² ΠΎΠΏΡƒΠΊΠ»Ρƒ Π°Π½Ρ‚Π΅Π½Π½Ρƒ Ρ€Π΅ΡˆΡ–Ρ‚ΠΊΡƒ Π²ΠΈΡ€Ρ–ΡˆΠ΅Π½Π° Ρ– Ρ€ΠΎΠ·ΠΏΠΎΠ΄Ρ–Π» струмів Π² Π½ΠΈΡ… Π·Π½Π°ΠΉΠ΄Π΅Π½ΠΎ. ΠŸΡ€ΠΈΡ‡ΠΎΠΌΡƒ Π·Π°Π»Π΅ΠΆΠ½Ρ–ΡΡ‚ΡŒ комплСксної Π°ΠΌΠΏΠ»Ρ–Ρ‚ΡƒΠ΄ΠΈ струму Π²Ρ–Π΄ часу Π²Π²Π°ΠΆΠ°Ρ”Ρ‚ΡŒΡΡ Π³Π°Ρ€ΠΌΠΎΠ½Ρ–ΠΉΠ½ΠΎΡŽ. НавСдСні Π² статті ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π½Ρ– Π²ΠΈΡ€Π°Π·ΠΈ ΠΌΠΎΠΆΡƒΡ‚ΡŒ Π±ΡƒΡ‚ΠΈ ΠΏΠΎΠΊΠ»Π°Π΄Π΅Π½Ρ– Π² основу ΠΌΠ΅Ρ‚ΠΎΠ΄Ρƒ Π°Π½Π°Π»Ρ–Π·Ρƒ характСристик спрямованості Ρ‚Ρ€ΠΈΠ²ΠΈΠΌΡ–Ρ€Π½ΠΈΡ… ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ ΠΎΠΏΡƒΠΊΠ»ΠΎΡ— Π°Π½Ρ‚Π΅Π½Π½ΠΎΡ— Ρ€Π΅ΡˆΡ–Ρ‚ΠΊΠΈ Π² Π΄Π°Π»Π΅ΠΊΡ–ΠΉ, ΠΏΡ€ΠΎΠΌΡ–ΠΆΠ½Ρ–ΠΉ Ρ‚Π° Π±Π»ΠΈΠΆΠ½Ρ–ΠΉ Π·ΠΎΠ½Ρ–.Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π° матСматичСская модСль элСктричСской ΠΈ ΠΌΠ°Π³Π½ΠΈΡ‚Π½ΠΎΠΉ ΡΠΎΡΡ‚Π°Π²Π»ΡΡŽΡ‰ΠΈΡ… поля излучСния элСмСнтов Π²Ρ‹ΠΏΡƒΠΊΠ»ΠΎΠΉ Π°Π½Ρ‚Π΅Π½Π½ΠΎΠΉ Ρ€Π΅ΡˆΠ΅Ρ‚ΠΊΠΈ. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Π΅ выраТСния ΠΏΠΎΠ·Π²ΠΎΠ»ΡΡŽΡ‚ ΠΏΠΎΡΡ‚Ρ€ΠΎΠΈΡ‚ΡŒ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΡ‹ числСнного модСлирования поля излучСния Π²Ρ‹ΠΏΡƒΠΊΠ»ΠΎΠΉ Π°Π½Ρ‚Π΅Π½Π½ΠΎΠΉ Ρ€Π΅ΡˆΠ΅Ρ‚ΠΊΠΈ Π² дальнСй, ΠΏΡ€ΠΎΠΌΠ΅ΠΆΡƒΡ‚ΠΎΡ‡Π½ΠΎΠΉ ΠΈ Π±Π»ΠΈΠΆΠ½Π΅ΠΉ Π·ΠΎΠ½Π΅. ΠŸΡ€ΠΈ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ΅ матСматичСской ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΡ‡ΠΈΡ‚Π°Π»ΠΎΡΡŒ, Ρ‡Ρ‚ΠΎ внутрСнняя Π·Π°Π΄Π°Ρ‡Π° для ΠΊΠ°ΠΆΠ΄ΠΎΠ³ΠΎ ΠΈΠ· Π΄ΠΈΠΏΠΎΠ»Π΅ΠΉ, входящих Π² Π²Ρ‹ΠΏΡƒΠΊΠ»ΡƒΡŽ Π°Π½Ρ‚Π΅Π½Π½ΡƒΡŽ Ρ€Π΅ΡˆΠ΅Ρ‚ΠΊΡƒ Ρ€Π΅ΡˆΠ΅Π½Π° ΠΈ распрСдСлСниС Ρ‚ΠΎΠΊΠΎΠ² Π² Π½ΠΈΡ… Π½Π°ΠΉΠ΄Π΅Π½ΠΎ. ΠŸΡ€ΠΈΡ‡Π΅ΠΌ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡ‚ΡŒ комплСксной Π°ΠΌΠΏΠ»ΠΈΡ‚ΡƒΠ΄Ρ‹ Ρ‚ΠΎΠΊΠ° ΠΎΡ‚ Π²Ρ€Π΅ΠΌΠ΅Π½ΠΈ Π±ΡƒΠ΄Π΅ΠΌ ΡΡ‡ΠΈΡ‚Π°Ρ‚ΡŒ гармоничСской. ΠŸΡ€ΠΈΠ²Π΅Π΄Π΅Π½Π½Ρ‹Π΅ Π² ΡΡ‚Π°Ρ‚ΡŒΠ΅ матСматичСскиС выраТСния ΠΌΠΎΠ³ΡƒΡ‚ Π±Ρ‹Ρ‚ΡŒ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½Ρ‹ Π² основу ΠΌΠ΅Ρ‚ΠΎΠ΄Π° Π°Π½Π°Π»ΠΈΠ·Π° характСристик направлСнности Ρ‚Ρ€Π΅Ρ…ΠΌΠ΅Ρ€Π½Ρ‹Ρ… ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ Π²Ρ‹ΠΏΡƒΠΊΠ»ΠΎΠΉ Π°Π½Ρ‚Π΅Π½Π½ΠΎΠΉ Ρ€Π΅ΡˆΠ΅Ρ‚ΠΊΠΈ Π² дальнСй, ΠΏΡ€ΠΎΠΌΠ΅ΠΆΡƒΡ‚ΠΎΡ‡Π½ΠΎΠΉ ΠΈ Π±Π»ΠΈΠΆΠ½Π΅ΠΉ Π·ΠΎΠ½Π΅.Analyzing the basic methods and features of determining the directional characteristics of axis-symmetric antenna arrays, which include convex antenna arrays, in the near, far and intermediate zones, distinguish a number of their differences from the directional characteristics of flat antenna arrays. These differences are mainly due to the fact that in determining the directional characteristics, axisymmetric antenna arrays should be considered as a system of extraneous non-collinear electric (magnetic) currents on the convex surface of the antenna. The application of this approach requires the use of the basics of electrodynamics in solving problems of determining the directional characteristics of such antenna systems. However, the different orientation of the partial radiation patterns of the emitters does not allow the application of the diagram multiplication theorem and the inverse methods of determining the radiation characteristics. In addition, in the known works are not fully represented mathematical models of the fields of elementary sources in the far, intermediate and near areas with respect to convex antenna arrays. The mathematical model of the electric and magnetic components of the radiation field of elements of a convex antenna array is developed. The obtained expressions allow us to construct algorithms for numerical simulation of the radiation field of a convex antenna array in the far, intermediate and near regions. During the development of the mathematical model, it was considered that an internal problem for each of the dipoles entering the convex antenna array was solved and the distribution of currents in them was found. Moreover, the dependence of the complex amplitude of the current on time is considered harmonious. The mathematical expressions given in the article can be the basis for the method of analysis of the directivity characteristics of three-dimensional models of a convex antenna array in the far, intermediate and near regions
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