This report describes the current status of the project activity Analysis of Flexible Microwave Systems within the project MIRA - Array Antennas and Programmable Microwave Systems. The report describes some of the technical and functional prerequisites necessary to integrate a multitude of RF-functions in a single multifunction microwave system. It focuses on reconnaissance and datalink communication functions. Typical requirements on bandwidth, frequency range, dynamic range, noise factor and radiated power are illustrated but requirements on cooling, power supply, volume, weight and environmental conditions are not included. The report is intended to form a basis for the continued studies of concepts and technological solutions for systems, RF-electronics and conformal antennas for flexible microwave systems.