A. B. Ipatov, V. M. Chmil, V. M. Skresanov, D. V. Ivanov, V. V. Mardyshkin, V. K. Chernov, O. M. Pylypenko, A. A. Kirilenko


Results of synthesis, design and tests of the experimental sample of cryogenic receiving focal unit (CRFU) for telescopes of Russian radio interferometric complex of new generation are presented. The radio telescopes can receive signals of space radio sources simultaneously in the S, X, and Ka bands. They are partially compatible with radio telescopes of promising global geodesic network VLBI2010. Approved technical solutions of CRFU key units are considered. The main characteristics of microwave elements are shown to satisfactorily correspond to design specification.

Key words: multirange dish antenna feed elements, circular-polarization separators, cooled low-noise amplifiers, radiometers, VLBI2010

Manuscript submitted 13.11.2013 

Rasio phys. radio astron. 2014, 19(1): 81-96


1. IPATOV, A. V., 2013. A new generation interferometer for fundamental and applied research. Phys. Usp. vol. 56, pp. 729–737. DOI:

2.  PLAG, H. P. and PEARLMAN,  M., eds. 2009. Global Geodetic Observing System: Meeting the Requirements of Global Society on Changing Planet in 2020. New York: Springer-Verlag.

3. HASE, H., DASSING, R., KRONSCHNABL, G., SCHLUTER, W., SCHWARZ, W., KILGER, R., LAUBER, P., NEIDHARDT, A., PAUSCH, A. and GBLDI, W., 2008. Twin Telescope Wettzell – a VLBI2010 Radio Telescope Project. In: A. FINKELSTEIN, D. BEHREND, eds. Measuring the Future: Proc. of the Fifth IVS General Meeting. St. Petersburg, Russia: Nauka Publ., pp. 109–113.

4. KRONSCHNABL, G., NEIDHARDT, A., PAUSCH, K., GÖLDI, W., RAYET, R. and EMRICH,  A., 2012. The TWIN-Radiotelescopes Wettzell. In: IVS TecSpec Workshop. Bad Kötzting, Germany, 1-2 March 2012.

5. LУPEZ-FERNANDEZ, J. A., 2012. The RAEGE VLBI radio telescope. In: IVS TecSpec Workshop. Bad Kötzting, Germany, 1-2 March 2012.

6. AIZENBERG, G. S., YAMPOLSKY, V. G., and TERESHIN,  O. N., 1977. UHF Antennas. Part 2. Moskow, USSR: Svyaz' Publ. (in Russian).

7. WEBBER, J. С. and POSPIESZALSKI, M. W., 2002. Microwave instrumentation for radio astronomy. IEEE Trans. Microw. Theory Tech. vol. 50, no. 3, pp. 968–995. DOI:

8. BEAUDOIN, C. 2012. Overview of the NASA/Haystack VLBI2010 Receiver Frontends. In: IVS TecSpec Workshop. Bad Kötzting, Germany, 1-2 March 2012.

9. PANTALEEV, M., YANG, J., HELLDNER, L., KILDAL, P.-S., RAZA, H., YIN, J. and KLEIN, B., 2012. Design and System Integration of 2-14 GHz Eleven Feed Receiver for VLBI2010. In: IVS TecSpec Workshop. Bad Kötzting, Germany, 1-2 March 2012.

10. PETRACHENKO, B. 2012. Review of VLBI2010 Concept and General Specifications. In: IVS TecSpec Workshop. Bad Kötzting, Germany, 1-2 March 2012.

11. SIGMAN, A., 1966. Masers. Moscow, Russia: Mir Publ. (in Russian).

12. BRITCLIFFE, M. J., HANSON, T. R., and FRANCO,  M. M., 2004. Cryogenic Design of the Deep Space Network Large Array LowNoise Amplifier System. IPN Progress Rep. vol. 42-157, pp. 1–13.

13. DUBROVKA, F. F. and OVSIANYK, Yu. A., 2009. Dual- and Multiband Horns of Feed Systems for Reflector-Type Antennas. Visnyk Nats. Tekhn. Univer. "KPI". Ser. Radiotekhnika. Radioaparatobuduvannya. no. 38, pp. 130–147 (in Ukranian).

14. IPATOV, A. V., MARDYSHKIN, V. V., KHVOSTOV, E. YU. and CHERNOV, V. K., 2013. Three-band cooled irradiator for radio telescope. Trans. IAA RAS. Is. 27, pp. 230–236 (in Russian).

15. Profera, C. E., 1976. Improvement of TE11 Mode Coaxial Waveguide and Horn Radiation Patterns by Incorporation of a Radial Aperture Reactance. IEEE Trans. Antennas Propag. vol. 24, no. 2, pp. 203–206. DOI:

17. NARASIMHAN, M. and , M., 1979. Propagation and Radiation Characteristics of Dielectric Loaded Corrugated DualFrequency Circular Waveguide Horn Feeds. IEEE Trans. Antennas Propag. vol. 27, no. 6, pp. 858–860.

18. PRIKOLOTIN, S. A. and KIRILENKO, A. A., 2011. Mode Matching Technique Allowance for Field Singularities as Applied to Inner Problems with Arbitrary Piecewise-Coordinate Boundaries: Part 1. Eigenmode Spectra of Orthogonic Waveguides. Telecom. Radio Eng. vol. 70, is. 11, pp. 937–958. DOI:

19. STESHENKO, S. O., PRIKOLOTIN, S. A., KIRILENKO, A. A., KULIK, D. YU., RUD', L. A. and SENKEVICH, S. L., 2014. Partial Domain Technique Considering Field Singularities In The Internal Problems With Arbitrary Piecewise-Coordinate Boundaries: Part 2. Plane-Transverse Junctions And "n-Line" Objects. Telecom. Radio Eng. vol. 73, is. 3, pp. 187–201. DOI:

20. PEROV, A .O., GLAMAZDIN, V. V. and SKRESANOV, V. N., 2013. Design and optimization of tri-band coaxial feed horn for the radiotelescope antenna. In: IX Int. Conf. Antenna Theory and Techniques Proceedings. 17 September 2013, Odessa (Ukraine), pp. 441–443.

21. CST, 2014. Computer Simulation Technology (CST) 'Microwave Studio', Headquarters: Darmstadt, Germany [online]. [viewed 10 Jan 2014]. Available from:

22. SKRESANOV, V. N., GLAMAZDIN, V. V., KIRILENKO, A. A., KULIK, D. YU., NATAROV, M. P., PYLYPENKO, O. M., RUD, L. A., SHUBNYJ, A. I. and ZOLOTAREV, V. A., 2013. Circular polarization splitters for three-band feed radiotelescope reflector antenna. In: IX Int. Conf. Antenna Theory and Techniques Proceedings. 17 September 2013, Odessa (Ukraine), pp. 49–52. DOI:

23. CLEAR MICROWAVE, INC., 2014. 90° 3 dB Hybrids, 180° 3 dB Hybrids [online]. [viewed 13 Feb 2014]. Available from:

24. ARAMAKI, Y., YONEDA, N., MIYAZAKI, M. and HORIE, T., 2003. Ultrathin Broadband OMT with Turnstile Junction. In: Dig. 2003 IEEE MTT-S International Microwave Symposium. 8-13 June 2003, Philadelphia, Pennsylvania (USA), vol. 1, pp. 47–50. DOI:

25. SRIKANTH, S., SOLATKA, M. and MEEK, M., 2009. Turnstile Junction Orthomode Transducer. In: X-Band OMT Design Review Meeting. 1 October 2009, AOC, Socorro, New Mexico (USA).

26. KIRILENKO, A. A., KULIK, D. YU., PRIKOLOTIN, S .A., RUD, L. A. and STESHENKO, S. A., 2013. Stepped approximation technique for designing coaxial waveguide polarizers. In: IX Int. Conf. Antenna Theory and Techniques Proceedings. 17 September 2013, Odessa (Ukraine), pp. 470–472. DOI:

27. KIRILENKO, A .A., KULIK, D. YU., RUD, L. A., TKACHENKO, V. and HERSCOVICI, N., 2006. Electromagnetic modeling and design of dual-band septum polarizers. Appl. Comput. Electromagn. Soc. J. vol. 21, no. 2, pp. 155–163.

28. KIRILENKO, A. A., KULIK, D. YU. and RUD, L. A., 2008. Compact 90 Twist Formed by a Double-Corner-Cut Square Waveguide Section. IEEE Trans. Microw. Theory Tech. vol. 56, no. 7, pp. 1633–1637. DOI:

29.  ANGELOV, I. M., STOEV, I. K., IVANOV, Z. G., TODOROV, B. N., SPASOV, A. I., KOLLBERG, E L., LINDSTROM, C. O. and WENDEMO, B. L., 1992. Low Noise Cooled Amplifiers – Simulation and Design. IEEE Trans. Microw. Theory Tech.vol. 40, no. 2, pp. 389–399. DOI:





















multirange dish antenna feed elements; circular-polarization separators; cooled low-noise amplifiers; radiometers; VLBI2010

Full Text:


Creative Commons License

Licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0) .