The aim is to develop design methodologies accounting for critical interactions between antennas and electronics, explore practical and fundamental limitations of large-scale, beam-steering array antennas.Objectives
- Determine physically fundamental limitations of iAAs bounding their main parameters to predict their impact on the system performance
- Develop accurate and computationally efficient models to include the effects of array front-end electronics in the optimisation of iAAs
- Investigate novel antenna array integration concepts and test their potential
Advances in electronics and signal processing have made active, electronically scanned array antennas cheaper and more versatile and have become of interest for base station arrays, integrated multifunctional sensors, and multi-beam satellite antennas to mention a few. The research into advanced multi-beam multifrequencyantenna array applications is therefore high on the agenda.
Users of today’s cellular systems expect a high-quality user experience and continual service improvement, which implies improved mobile network capabilities. Advanced array antennas will make it possible to introduce more advanced beamforming functionality and enable promising features, such as massive MIMO.
There is an ever-increasing demand for data rates in space-based communication systems. As the available spectrum is limited, co-existence between systems will have to utilise spatial filtering through advanced beam shaping and multiple beams. Recently plans for “mega-constellations” to provide global broadband Internet access have emerged, and many of these systems will use array antennas.
Thorough analyses of future international relations, economic development, and trends in security points at an ever-increasing need for improved sensor-mediated array capabilities. Furthermore, the defence research institute RAND Corporation states that the sensor systems constitute an increasing part of the cost of an entire platform.
Today, there is a lack of modelling methods that are capable to include active electronics and weak nonlinear physical effects in the antenna design process. These methods represent the basis for realising optimally integrated array frontends, especially those having a large number of active antennas, and require an interdisciplinary approach.
Chalmers, Ericsson, Gapwaves, Keysight, KTH, RUAG, Saab
Prof. Marianna Ivashina