Authors
Qi Luo, Steven Gao, Mohammed Sobhy, Xuexia Yang
Publication date
2018/1/17
Journal
IEEE Antennas and Wireless Propagation Letters
Volume
17
Issue
3
Pages
450-453
Publisher
IEEE
Description
This letter presents a wideband transmitarray (TA) with reduced profile. A novel unit cell based on a wideband bandpass filter is developed and applied to the design of the TA. The TA consists of two identical trilayer frequency selective surfaces (FSSs), thus it has a lower profile compared to traditional designs that use at least four FSS layers separated by quarter-wavelength air gaps to obtain the 360° phase shift range. The FSS has a pair of square patches printed on the top and bottom layers, and a square slot loaded by four microstrip lines printed on the middle layer. The phase shift is achieved by simultaneously adjusting the size of the square patches. Within the frequency band of interest, the developed unit cell shows low insertion loss and sufficient phase shift range. An equivalent circuit model is developed to better understand the operating principles of the FSS. To validate the design concept, one prototype …
Total citations
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Scholar articles
Q Luo, S Gao, M Sobhy, X Yang - IEEE Antennas and Wireless Propagation Letters, 2018