Properties of cavity-backed slot-ring antennas at 95 GHz

被引：4

作者：

Nolen, S ^{[1
]}

Harvey, TE ^{[1
]}

Reintsema, CD ^{[1
]}

Grossman, EN ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Boulder, CO USA

来源：

PASSIVE MILLIMETER-WAVE IMAGING TECHNOLOGY V | 2001年 / 4373卷

关键词：

slot-ring; annular slot; ring-slot; millimeter wave;

D O I：

10.1117/12.438144

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：

Slot-ring antennas with planar backshorts designed for operation at 95 GHz have been fabricated and their properties measured. Using optical lithography, we fabricated the slot-ring antennas, along with integrated niobium thin-film bolometers, on dielectrically thin (50 mum) silicon substrates. We have performed a theoretical analysis of the slot-ring antennas with planar backshorts and compared the theoretical results with our measured beam patterns. The measured antenna patterns have highly circular main beams with full -3 dB beamwidths of 21 degrees. The patterns have low sidelobe levels of about -15 dB in the H-plane and below -25 dB in the E-plane and a directivity of 17 dB. We are investigating a focal-plane array of slot-ring antenna-coupled bolometers for use in a concealed-weapons imaging system.

引用

页码：49 / 57

页数：9

共 18 条

[1]

ALLEN WP, 1984, ANTENNA ENG HDB

[2] SLOT LINE ON A DIELECTRIC SUBSTRATE [J].