A. A. Vasin1, E. V. Manaenkov2, L. I. Ponomarev3, O. V. Terekhin4
1, 3, 4 Moscow Aviation Institute (National Research University) (Moscow, Russia)
2 JSC Central Design Apparatus Building Bureau (Tula, Russia)

Shared-aperture antenna arrays make it possible to ensure the simultaneous operation of one or more radio-electronic systems operating in different frequency ranges based on the same radiating aperture. The requirements for the characteristics of such antennas largely depend on the purpose of the electronic system. At present, the development of shared-aperture phased antenna arrays (PAA) designed to operate as part of radar systems and capable of operating in two frequency bands with a wide scanning sector in each band is relevant. The aim of the article is to develop models of a fragment of a shared-aperture microstrip phased array radar L/S-band and optimize their geometric parameters.

The configuration of the shared-aperture PAA has been determined, which satisfies the typical requirements for the characteristics of a dual-band PAA radar. Two electrodynamic models of the central fragment of the shared-aperture phased array have been developed and investigated. The calculated radiation patterns (RP) of the emitters and graphs of the frequency dependence of the standing wave ratio in the operating frequency band of each range have been presented. The results of simulation of the RP of PAA fragments, consisting of 10 L-band elements and 40 S-band elements, have been given.

The presented results can be used in the development of shared-aperture phased arrays designed to operate in two frequency bands.

Vasin A.A., Manaenkov E.V., Ponomarev L.I., Terekhin O.V. Dual-band shared-aperture phased antenna array of L/S-band. Antennas. 2022. № 5. P. 70–83. DOI: https://doi.org/10.18127/j03209601-202205-05 (in Russian)

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