W-Band Low-SLL Size-Reduction Microwaveguide Array Antenna Using TE120-Mode-Cavity Dual-Layer Power Divider

Autor:	Lei Wang, Shi Sen Yao, Shi Chao Jin, Ding Wang, Yu Jian Cheng, Yong Fan, Sheng Hui Zhang
Rok vydání:	2021
Předmět:	Optics Materials science W band business.industry Frequency band Bandwidth (signal processing) Power dividers and directional couplers Tapering Electrical and Electronic Engineering Antenna (radio) business Antenna efficiency Power (physics)
Zdroj:	IEEE Antennas and Wireless Propagation Letters. 20:2146-2150
ISSN:	1548-5757 1536-1225
DOI:	10.1109/lawp.2021.3106657
Popis:	In this letter a W -band small-size low sidelobe level (SLL) 6 × 16 microwaveguide slot array antenna is proposed based on the silicon micromachining technology. The feeding network within the limited available area consists of several stages of equal T-junctions and TE120-mode-cavity dual-layer power dividers able to build the desired tapering power distribution over a relatively wide bandwidth. The TE120-mode-cavity dual-layer power divider is at the end of the feeding network, which can implement the layer-to-layer transition and the power division simultaneously. Thus, the whole size of the array antenna can be reduced by about 25% compared with the conventional five-stage tree-like feeding network. The overall antenna size is 60 mm × 20 mm × 1.85 mm. The measured maximum gain is 26.1 dBi at 94 GHz, and the corresponding radiation efficiency is 69.2%. The measured SLL in E -plane is below than −18.5 dB within the frequency band from 92 to 96 GHz.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a38bdfc26b1fc564765c4d1ed28af9c4 https://doi.org/10.1109/lawp.2021.3106657 Zobrazit plný text záznamu