Abstract
A phased array radar has been developed toward an effective means for integrating multiple functionalities into one radar platform. The radar system necessitates the ability to operate at multiple frequencies simultaneously. In this paper, a triple-band uniform radial sub-array using a shared aperture antenna is proposed for a multi-functional radar system. An efficient placement of different radiating elements is realized based on the radial displacement of the circular array. In addition, multi-layer feed networks are used to reduce the intricacy of integrating several feed networks into one antenna. The reasonable matching characteristics and far-field gain are acquired at the S-band, C-band, and X-band. The measured results of the prototype are presented, and the results are compared to the simulation, which showed a good agreement.
Highlights
A multi-band array antenna has garnered a lot of attention for modern radar applications which create diverse beam configurations and operate at different frequencies with one radar platform [1,2,3]
A shared aperture antenna with tri-band and dual polarization has been studied using diverse patch, dipole and monopole elements based on a multi-layered feed network [4]
Efforts have been made to design an optimized element antenna in order to achieve the multi-band characteristics of an array antenna
Summary
A multi-band array antenna has garnered a lot of attention for modern radar applications which create diverse beam configurations and operate at different frequencies with one radar platform [1,2,3]. Received: 31 May 2021 Accepted: 18 June 2021 Published: 20 June 2021 Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.
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