Compact phased arrays for mobile terminals

This article presents an overview of challenges encountered when developing a cost-effective compact steerable antenna array for Ku-band. Especially the problem of integration of RF-components will be addressed. This array is being developed within the NATALIA project (ESA-funded, ARTES 5), is a fully electronically steerable antenna, and dedicated to land mobile satellite terminals. The major drawback of such arrays is the vast number of RF-components required for the design, making a price-effective and compact solution highly difficult. Different RF-topologies have been investigated and a dedicated MMIC design was part of the design process. This MMIC will also be presented and measurements of a first prototype will be discussed. The possibilities of MEMS switches will also be addressed.