Design of Quasi-Optical Lens Antenna for W-Band Short Range Passive Millimeter-Wave Imaging

• 作者: Jingshi Zhou Kaijun Song Qike Chen Yong Fan
• 来源期刊: 电脑和通信(英文)
• 学科: 数学
• 关键词: Quasi-Optical LENS PASSIVE MILLIMETER-WAVE Imaging Numerical Method Huygens’ PRINCIPLE
• 年，卷（期）: 2015,（3）
• 页码范围: 93-99
• 页数: 7页
• 分类号: O1

摘要

A quasi-optical dielectric lens used for W-band focal plane array passive imaging has been developed. The imaging system requires the lens to form beam spot with 3 dB width less than 35 mm at distance of 3500 mm. The powerful optical design software ZEMAX was utilized to design the contours of the lens, and numerical method based on ray tracing and Huygens’ Principle was processed to verify the design result. Measurement result shows that the 3 dB width of the beam spot formed by the lens is 34 mm at distance of 3460 mm, and the beam pattern on imaging plane are equally arranged and the intensity decreases only 0.55 dB while the object lateral deviation increases to 300 mm.