In this paper, two compact monopole antennas working at 149 MHz (VHF) and 398 MHz (UHF) are proposed for CubeSats applications. Two monopole antennas are integrated on a double layer ceramic substrate. The overall dimensions of the folded antenna are 101 mm ×40 mm ×8.9 mm which is very small. Meander-line technique and foldable structure are proposed to achieve a compact design. The introduction of decoupling structure solves the problem of high coupling caused by small size. Computer simulations and measurements are conducted. The results demonstrate that the proposed design is a very promising candidate for CubeSats applications.

In this paper, a planar inverted-F antenna (PIFA) working at 401.8 MHz is optimized for MicroSats omnidirectional communication and omnidirectional communication is achieved by antenna layout optimization. Some parameters of the antenna are analyzed for investigating the influences to the resonant frequency and the gain. The PIFA occupies a small volume of 85×85×31 mm3 which is 0.011λ×0.011λ×0.004λ and has a maximum gain of 5.37 dBi after optimized. An omnidirectional, highly isolated dual-antenna communication satellite receiving system is realized by layout optimization simulation analysis. The effectiveness of the antenna and the layout optimization is verified by comparison between simulation and experimental results. The antenna has potential applications in MicroSats omnidirectional communications as the antenna has a small size and it can be quickly redesigned and manufactured.

This paper investigates a formation control technique for low-Earth-orbit nanosatellites based on the differential aerodynamic drag and lift. An innovative method of using only the yaw angle deviat...