Ku/E dual‐band shared‐aperture antenna array for phased array applications. Issue 12 (25th October 2022)

• Record Type: Journal Article
• Authors: Sun, Si‐Cheng; Zhao, Yi‐Jiu; Zheng, Yan‐Ze; Zhou, Nai‐Xin; Ban, Yong‐Ling; Zhu, Wei; Guo, Li‐Feng
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 32:Issue 12(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-10-25
• Subjects: dual‐band -- E‐band arrays -- phased arrays -- shared‐aperture arrays -- sparse concentric circular arrays; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.23483
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: This article presents a dual‐band shared‐aperture antenna array for a phased array system operating in the Ku / E ‐bands with a large frequency ratio. A regular array arrangement is used to arrange single‐layer coupled microstrip patch elements that operate in the Ku ‐band. E ‐band elements using slot‐coupled microstrip patch antennas are arranged in a sparse concentric circular array configuration. In addition, E ‐band transceiver/receiver (T/R) chips are attached to the back of the array's multilayer printed‐circuit board (PCB) to achieve high density with a low‐profile. In the shared‐aperture of the proposed antenna array, there are 64 elements in both Ku ‐ and E ‐bands. According to the results of our experiments, the Ku ‐band array has a large scanning angle spanning from −45° to +45° with low gain drop and sidelobe level (SLL). It also exhibits a comparatively wide impedance bandwidth of 17.8% in the frequency range of 14.65–17.51 GHz. The E ‐band array has a scanning angle of about ±20° in both the E ‐ and H ‐planes and a 7.7% simulated impedance bandwidth covers the frequency range of 75.8–81.9 GHz.