Active Scan-Beam Reflectarray Antenna Loaded with Tunable Capacitor
Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany
Proceedings: EuCAP 2009
Pages: 4Language: englishTyp: PDF
Personal VDE Members are entitled to a 10% discount on this title
Authors:
Hajian, M.; Kuijpers, B. (Faculty of Industrial Design, Delft University of Technology, Mekelweg 4, 2628CD Delft, The Netherlands)
Buisman, K.; Akhnoukh, A.; Plek, M.; Vreede, L. C. N. de (DIMES, Delft University of Technology, Mekelweg 4, 2628CD Delft, The Netherlands)
Zijdeveld, J.; Ligthart, L. P. (IRCTR, Delft University of Technology, Mekelweg 4, 2628CD Delft, The Netherlands)
Abstract:
In this paper, the design concept of an active reconfigurable reflectarray antenna has been proposed and tested. The elementary radiators are hollow patch antennas loaded with varactor-diode device which its reflected phase can be varied. This phase alteration is based on the variation of the diode capacitance which can be achieved by varying the biasing voltage of the active varactor device. By activating these varactor devices, the phase of each antenna element in the array configuration can be adopted dynamically and consequently its radiation beam can be reconfigured. The advantage above the MEMS switches is complexity of the integration and continues beam scanning capability. The reflectarray incorporating active elements has been built and tested at 6.0GHz. The performance of the proposed active antenna is excellent which pioneers design of arbitrarily reconfigurable antennas.