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W-Band Low-SLL Size-Reduction Microwaveguide Array Antenna Using TE120-Mode-Cavity Dual-Layer Power Divider
- Source :
- IEEE Antennas and Wireless Propagation Letters. 20:2146-2150
- Publication Year :
- 2021
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2021.
-
Abstract
- 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.
Details
- ISSN :
- 15485757 and 15361225
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- IEEE Antennas and Wireless Propagation Letters
- Accession number :
- edsair.doi...........a38bdfc26b1fc564765c4d1ed28af9c4