期刊
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
卷 31, 期 10, 页码 -出版社
WILEY
DOI: 10.1002/mmce.22816
关键词
dual-band; high channel isolation; multi-channel; satellite phased array
资金
- China Scholarship Council
- Engineering and Physical Sciences Research Council [EP/N032497/1, EP/S005625/1]
- EPSRC [EP/S005625/1, EP/N032497/1] Funding Source: UKRI
The research presents a highly integrated K/Ka-band phased array with high efficiency and channel isolation, achieving high isolations between different frequency and polarization channels. Experimental results demonstrate good beam scanning performance of the phased array.
A highly integrated K/Ka-band phased array with duplexing channels for transmitting and dual circularly polarized channels for receiving is presented. To increase both the efficiency and channel isolation, a novel architecture is proposed to integrate the horn antenna, polarizer, ortho-mode transducer (OMT), and filters within a very compact radiating aperture as the element. Based on this element, one large-scale phased array with 416 elements was developed, fabricated, and measured. Experimental results show that the proposed phased array has high aperture efficiency of larger than 56% in both transmitting and receiving channels, high channel isolations of 50 dB between different frequency channels and 20 dB between different polarization channels. Furthermore, beam scanning performance within +/- 20 degrees and +/- 18 degrees at 20 and 30 GHz are achieved, respectively. The developed multifunctional phased array is an attractive and feasible frontend for K-/Ka- band SatCom system.
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