Deployable bistable composite helical antennas for small satellite applications

CORC > 沈阳自动化研究所 > 中国科学院沈阳自动化研究所 > 空间自动化技术研究室

	Deployable bistable composite helical antennas for small satellite applications
	Viquerat, Andrew 2; Wu CC(吴晨晨)1; Knott, Geoffrey 2
	2019
会议日期	January 7-11, 2019
会议地点	San Diego, CA, United states
页码	1-10
英文摘要	An ultra-compact deployable helical antenna is presented, designed to enhance space-based reception of Automatic Identification System signals for maritime surveillance. The radio frequency performance (i.e. peak gain and directionality) is simulated at 162 MHz using ANSYS High Frequency Structure Simulator and evaluated over a range [0.5–8] of helical turns. Es-tablished and commercially available omnidirectional antennas suffer interference caused by the large number of incoming signals. A 7-turn helix with planar ground plane is proposed as a compact directional-antenna solution, which produces a peak gain of 11.21±0.14 dBi and half-power beam width of 46.5±0.5 degrees. Manufacturing the helical structure using bistable composite enables uniquely high packaging efficiencies. The helix has a deployed axial length of 3.22 m, a diameter of 58 cm, and a stowed (i.e. coiled) height and diameter of 5 cm — the stowed-to-deployed volume ratio is approximately 1:9,800 (0.01%). The use of ultra-thin and lightweight composite results in an estimated mass of 163 grams. The structural stability (i.e. natural vibration frequency) is also investigated to evaluate the risk an unstable deployed antenna may have on the radio frequency performance. The first vibration mode of the 7-turn helix is at 0.032 Hz indicating the need for additional stiffening. © 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
产权排序	2
会议录	AIAA Scitech 2019 Forum
会议录出版者	AIAA
会议录出版地	Reston, VA, USA
语种	英语
ISBN号	978-1-62410-578-4
内容类型	会议论文
源URL	[http://ir.sia.cn/handle/173321/25280]
专题	沈阳自动化研究所_空间自动化技术研究室
通讯作者	Knott, Geoffrey
作者单位	1.Shenyang Institute of Automation, Chinese Academy of Sciences, Liaoning Province, 114 Nanta Street, Shenyang, China 2.Department of Mechanical Engineering Sciences & Surrey Space Centre, University of Surrey, Guildford; GU2 7XH, United Kingdom;
推荐引用方式 GB/T 7714	Viquerat, Andrew,Wu CC,Knott, Geoffrey. Deployable bistable composite helical antennas for small satellite applications[C]. 见:. San Diego, CA, United states. January 7-11, 2019.