600-GHz-Band Terahertz Imaging System Using Frequency-Independent Concave Mirror

被引：4
|
作者：
Kaname, Ryohei [1 ]
Sagisaka, Tomoki [1 ]
Yi, Li [1 ]
Nagatsuma, Tadao [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan
来源：
2020 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP 2020) | 2020年
基金：
日本科学技术振兴机构;
关键词：
elliptical mirror; mechanical beam scanning; terahertz imaging; ANTENNA;
D O I：
10.23919/mwp48676.2020.9314504
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An ultra-wide band scanner using a concave mirror is proposed for 600-GHz-band imaging systems. A frequency-independent mirror was designed to focus beams from different angles which were steered with a galvanometer mirror. Such systems enable three-dimensional imaging as well as two-dimensional spectroscopic imaging with high spatial resolution. The fundamental performance of the concave mirror was described with both the numerical simulation and experimental evaluation. We experimentally confirmed that the area of 100 x 80 mm(2) can be imaged in 1 second with a spatial resolution of similar to 2.5 mm. Finally, we applied the system to a tag reader and a thickness measurement with a resolution of similar to 1 mm by sweeping the frequency from 450 to 750 GHz.
引用
收藏
页码：58 / 61
页数：4
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