Photonics-based modular multistate digital coherent system

Objectives. The study aimed to develop interspecies and interclass methods for constructing coherent radio engineering systems based on a modular complementary structure.

Methods. A set of modules and submodules having no narrow specialization and together constituting a flexible broadband hardware-reconfigurable software-defined radio engineering structure is considered as the basic set for constructing a digital radio photonic system path. Due to their broadbandness and complementary structure, modules and submodules have many applications both as self-sustained devices and as part of more complex systems.

Results. Functional diagrams of modern digital receiver-shapers, as well as modules for amplifying radio frequency signals and converting radio frequency signals into an optical signal are presented along with a radio photonic synchronization network for generating clock signals. Calculations of the introduced phase error of a quartz singlemode fiber and graphs of the dependence of the change in the signal phase on external influencing factors are given. A concept for integrating the presented modules into the construction of a modular transceiver multiposition wideband coherent digital radio photonic system is proposed. The results of calculating radiation patterns and mathematical modeling the beam deflection of a broadband antenna array are presented along with antenna systems based thereon.

Conclusions. The proposed circuit design solutions allow the time required for developing new types of systems to be significantly reduced due to the range of ready-made technical solutions. Not only are the parameters of the developed devices comparable to the best world analogues, but they also surpass existing solutions in terms of system integration. The developments have been tested under R&D project at the Kaluga Scientific Research Institute of Radio Technology and Hardware Solution Technologies (TAR). The proposed solutions are integrated at the subsystem level into advanced developments of products for civil and special purpose. Further development of the concept of building ultra-wideband devices allows reaching a new level in the technology of constructing modular multiposition coherent digital radio photonic systems.

1. Du J.F., Fan X.J., Cao X.H., Li M., Zhu N.H., Li W. Transmission of dual-chirp microwave signal over fiber with suppression chromatic-dispersion-induced power-fading based on stimulated Brillouin scattering. Opt. Commun. 2022;508:127787. https://doi.org/10.1016/j.optcom.2021.127787

2. Mo Zh., Li R., Yang J., Dong J., Cao J., Li W. A photonics radar with remoting antenna based on photonic assisted signal generation and stretch processing. In: 2019 IEEE Radar Conference (RadarConf). 2019. Accession Number: 18993737. https://doi.org/10.1109/RADAR.2019.8835512

3. Kashin V.A., Shurygina I.S. Synthesis of multibeam directivity patterns to improve performance of radar stations with an active phased antenna array. J. Commun. Technol. Electron. 2021;66(10):1155-1162. https://doi.org/10.1134/S1064226921100089

4. Bystrov R.P., Sokolov S.A., Cherepenin V.A. On the possibility of radio photonics technique in radar applications. Zhurnal radioelektroniki = J. Radio Electronics. 2017;6 (in Russ.). Available from URL: http://jre.cplire.ru/jre/jun17/3/text.pdf.

5. Golov N.A., Usachev V.A., Boev S.F., Savchenko V.P., Shulunov A.N., Zubarev Yu.B. Evolution of radiophotonics and prospects for its application in radar. In: RTI Systems VKO 2017: Proceedings of the V All-Russian Scientific and Technical. Conf. 2018. P. 292-320 (in Russ.).

6. Lee J.J., et al. Photonic wideband array antennas. IEEE Transactions on Antennas and Propagation. 1995;43(9):966-982. https://doi.org/10.1109/8.410214

7. Winnall S.T., Lindsay A.C., Knight G.A. A wideband microwave photonic phase and frequency shifter. IEEE Transactions on Microwave Theory and Techniques. 1997;45(6):1003-1006. https://doi.org/10.1109/22.588620

8. Yao J. Microwave photonics. J. Lightwave Technology. 2009;27(3):314-335. https://doi.org/10.1109/JLT.2008.2009551

9. Unchenko I.V. Modular multi position digital radio frequency photonics system. In: Youth and the Future of Aviation and Cosmonautics 2020: Collection of abstracts of competitive works. The 12th All-Russian Intersectoral Youth Competition of Scientific and Technical Works and Projects in the Field of Aviation and Rocket and Space Technologies. 2020. P. 123 (in Russ.).

10. Emel'yanov A.A. Belkin M.E., Toporkov N.V., Masnoi V.A. The features of designing onboard fiber-optic syncronetwork. Radiotekhnika = J. Radioengineering. 2017;8:121-126 (in Russ.).

11. Voskresenskii D.I., Kotov Yu.V., Ovchinnikova E.V. Trends in the development of broadband phased antenna arrays (review). Antenny =J. Antennas. 2005;11(102): 7-21 (in Russ.).

12. Wang F., Wang P., Zhang X., Li H., Himed B. An overview of parametric modeling and methods for radar target detection with limited data. In: IEEE Access. 2021;9:60459-60469. https://doi.org/10.1109/ACCESS.2021.3074063

13. Grigor'ev L.N. Tsifrovoe formirovanie diagrammy napravlennosti v fazirovannykh antennykh reshetkakh (Digital Beam Forming in Phased Antenna Arrays). Moscow: Radiotekhnika; 2010. 144 p. (in Russ.). ISBN 978-5-88070-243-5

14. Maltsev S.B., Shcherbakov M.V., Voitovych O.N., et al. Investigation and tuning procedure of Ka-band phased antenna array. Radioelectron. Commun. Syst. 2021;64(9):501-508. https://doi.org/10.3103/S0735272721090053

15. Legkiy N.M., Unchenko I.V. Formation of the direction diagram in phased antenna arrays. Russian Technological Journal. 2019;7(2):29-38 (in Russ). https://doi.org/10.32362/2500-316X-2019-7-2-29-38

16. Gross F.B. Frontiers in Antennas: Next Generation Design & Engineering. The McGraw-Hill Companies; 2011. 526 p.

17. Unchenko I.V. Diagram formation of active phased antenna arrays. Sovremennye problemy sovershenstvovaniya raboty zheleznodorozhnogo transporta. 2018;14:331-337 (in Russ.).