Document Type

Conference Paper


Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence


Electrical and electronic engineering, Communication engineering and systems

Publication Details

Paper presented at European Conference on Antennas and Propagation - EuCAP, Lisbon, Portugal, European Association on Antennas and Propagation, 12/04/2015


The paper demonstrates how a modulation constellation can be used to steer the radiation pattern of a reconfigurable omnidirectional circularly polarized antenna. The proposed approach offers the benefit of digital beamforming while using a single antenna: the steering can be executed by low frequency electronics and independently for each frequency channel. In the proposed study, the antenna is excited by a signal generated by two I/Q modulators. By appropriately changing the I and Q components, a phase shift is generated which effectively steers the radiation pattern. The results were achieved using cosimulation between CST Microwave Studio and CST Design Studio.



Irish Research Council