A new model for characterizing a complex system formed by a feeding horn and a transmitarray lens is presented in this paper. This model characterizes the spillover radiation and is capable of analyzing its effect on the radiation pattern. Both the contribution of the lens and the spillover radiation are modeled as planar arrays. The proposed model shows good agreement with the results obtained in simulations using a commercial full-wave software. In addition, some features, such as the characterization of the feeding element, are included in this model, in order to improve its accuracy. Finally, the limits of applicability are also discussed throughout this paper. Thus, it is possible to set up the boundaries, in terms of F=D ratio and number of elements, within which the model is reliable.
bandwidth, high gain, and small in-band gain variation targeted for satellite TV Ku band downlink systems. Its application in a 2Â4 array is also presented to show that its single element gain and bandwidth characteristics are preserved in an array setting.
A new dual polarization lens working at the frequency of 30GHz has been designed and simulated. The design of the unit cell is based on a structure of four stacked patches coupled by a symmetric cross that achieves a 360-degree phaseshift for both polarizations by varying a different dimension of the patches for each one. In this design, a quasi-independent relationship between both polarizations has been achieved. Hence, a simple synthesis algorithm to lower the dependence between them is used. Finally, in order to prove the good behavior of the system a lens with two different steering directions is designed and simulated showing good performance for both polarizations.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.