Patch Antennas for TTC Applications of Mini-satellites
In recent years,with the development of miniaturization technologies such as the very large scale integration(VLSI),and the digital signal processing(DSP),small satellites are becoming more and more attractive.And it is known that during both the period of attitude adjustment after the separation and working time of a satellite,TTC(Telemetry,Tracking,and Command)are very important functions necessary for the proper operation of it.In this paper,firstly a design process of a dual-band patch antenna,which can operate at 2 GHz and 2.2 GHz for TTC applications on small satellites is presented,followed by the approach of the placement optimization of the TTC patch antenna onboard for a mini-satellite.In order to obtain one better strategy,the construction of the antenna is discussed and two schemes of antennas placement are introduced.Through the results secured by electromagnetic computation,it is indicated that situating three patch antennas respectively on three adjacent walls and the forth one on the cut-off bottom corner can provide a satisfactory omni-directional radiation pattern.To reduce the complexity,a new method to conform a patch antenna on the mini-satellite is proposed by bending the antenna along one edge of the cube in a top corner.By comparison and analysis,it is concluded that one bended patch antenna can perform as well as four ordinary ones do so that it can effectively cut off the weight and volume of the spacecraft,and facilitate the feeding intricacy.All the S-parameter and radiation pattern results used for analysis were calculated with the CEM software CST Microwave Studio,which is based on the finite integral technique(FIT).
Nai-Zhi Wang Xi-Bo Wang Jianzhou Li Jia-Dong Xu
School of Electronic and information,Northwestern Ploytechnical University,Xian 710129,China
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
1110-1114
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）