G. Yu. Kuznetsov – Post-graduate Student, Department of Radiophysics, Antennas and Microwave Technics, Moscow Aviation Institute (National Research University)

E-mail: gregz92@yandex.ru

V. S. Temchenko – Dr.Sc. (Eng.), Professor, Department of Radiophysics, Antennas and Microwave Technics, Moscow Aviation Institute (National Research University)

E-mail: vstemchenko@gmail.com

In this paper influence of structural components of the climatic chamber on the field characteristics of active antenna arrays during thermal testing has been modeled using two different approaches. The first approach represents the array under test (AUT) as a set of discrete equivalent sources located in the aperture of the array. The second approach represents the AUT with a continuous, not discrete, aperture field distribution, which is defined using the tangential components of electric and magnetic fields. It has been noted that both approaches use expansion of aperture field over plane E- and H-waves and utilize the tensor Green’s function of the discrete source to take into account influence of a radiotransparent window (RTW). It has been shown that accuracy of farfield pattern calculation increases by 1...6 dB when the RTW transparency characteristic is accounted for. The difference between the aperture fields reconstructed with and without RTW compensation is not as clear as in the farfield pattern reconstruction case, but the RTW compensation is still required in many possible cases.

1. Bakhrakh L.D., Kremenetskij S.D., Kurochkin A.P., Usin V.A., Shifrin Ya.S. Metody izmerenij parametrov izluchayushchikh sistem v blizhnej zone. L.: Nauka. 1989.
2. Voronin E.N., Liepin' U.R., Shifrin Ya.S. Diagnostika antennykh reshetok // V kn. Aktivnye fazirovannye antennye reshetki / pod red. D.I. Voskresenskogo i A.I. Kanashchenkova. M.: Radiotekhnika. 2004. S. 387−427.
3. Bucci O.M., Migliore M.D., Panariello G. Accurate diagnosis of conformal arrays from near-field data using the matrix method // IEEE Trans. on Antennas and Propagation. 2005. V. 53. № 3. R. 1114–1120.
4. Tikhonov A.N., Arsenin V.Ya. Metody resheniya nekorrektnykh zadach. M.: Nauka. 1979.
5. Migliore M.D. A compressed sensing approach for array diagnosis from a small set of near-field measurements // IEEE Trans. on Antennas and Propagation. 2011. V. 59. № 6. R. 2127–2133.
6. Kuznetsov G.Yu., Miloserdov M.S., Temchenko V.S., Kovalenko A.I., Voskresenski D.I., Vnotchenko S.L., Riman V.V., Shishanov A.V. Practical aspects of active phased arrays characterization during thermal testing // 2017 Progress In Electromagnetics Research Symposium – Spring (PIERS). 2017. P. 3615–3621.
7. Grinev A.Yu., Temchenko V.S., Bagno D.V., Zajkin A.E., Il'in E.V. Rekonstruktsiya parametrov sred i ob"ektov radarom podpoverkhnostnogo zondirovaniya (metody i algoritmy) // Radiotekhnika. 2013. № 8. S. 18–29.
8. Grinev A.Yu., Temchenko V.S. Modelirovanie shirokopolosnoj antenny radara podpoverkhnostnogo zondirovaniya kompleksnymi elektricheskimi i magnitnymi istochnikami // Antenny. 2011. № 3. S. 15–24.
9. Balanis C.A. Modern antenna handbook. N.Y.: Wiley-Interscience. 2008.
10. Hansen T.B. Complex-point dipole formulation of probe-corrected cylindrical and spherical near-field scanning of electromagnetic fields // IEEE Trans. on Antennas and Propagation. 2009. V. 57. № 3. R. 728–741.
11. Kuznetsov G.Yu., Temchenko V.S. Rekonstruktivnaya diagnostika fazirovannykh antennykh reshetok s ispol'zovaniem metoda «opoznanie so szhatiem» // Antenny. 2017. № 1. S. 14–21.
12. Grinev A.Yu., Temchenko V.S., Bagno D.V. Radary podpoverkhnostnogo zondirovaniya. Monitoring i diagnostika sred i ob"ektov. M.: Radiotekhnika. 2013.