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High cross-polarization is a well-known issue for offset reflectors, especially designs with low F/D ratios. In this paper, we explore the possibility in using spline-profiled horns to create a feed aperture distribution reducing reflector cross-polarization. We optimize two smooth-walled, spline-profiled horn designs to lower the reflector cross-polarization, where one design has a set of pins optimized...
Advances in modern technology have aided the development of a class of miniaturized satellites called SmallSats that typically weigh less than 500 kg. Key members of this family are CubeSats. CubeSats can weigh as little as 1.33 kg, with a typical volume of 10 ? 10 ? 10 cm<sup>3</sup>. Their potential has motivated the scientific community to revisit existing spacecraft technologies to...
Optimal illumination of a reflector is essential to maximize a reflector antenna's gain. In practice, this has been accomplished by specifying certain feed horn pattern characteristics, e.g. 10 dB BW, and independently optimizing the feed antenna to meet these requirements. In this investigation, we consider the possibility of optimizing the reflector antenna system through a co-simulation of the...
Developing compact deployable umbrella reflector antennas for CubeSats potentially enables several advanced applications requiring high antenna gain. The size and weight constraints imposed by the CubeSat standard makes a smaller number of gores attractive for CubeSat applications. This work revisits the determination of the optimum feed location and gain loss with an emphasis on a smaller number...
With the advent of small-scale satellite technologies, there has been significant interest in developing advanced functionalities for CubeSat and SmallSat projects. Developing high-gain antennas within this paradigm opens the door for many new applications which require high data rates or narrow-beam patterns. In this paper, we discuss the optimization of a compact, spline-profile horn antenna assembly...
This work analyzes mesh surfaces at Ka-band for its potential use in CubeSat reflector antennas. The simple wire grid model is used as the starting point, since it has already been analyzed in closed form by Astrakhan. However, this analytical solution, by itself, cannot accurately characterize complex mesh surfaces or the nature of joint between the wires. Thus, full wave simulations must be used...
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