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Communication engineering and systems
In this paper we investigate the design and operating principle of a pattern reconfigurable multi-mode slot antenna with a hybrid feed. The slot antenna is excited by an orthogonal arrangement of a co-planar waveguide (CPW) fed circular disc and a microstrip fed square patch. The design objective is to be able to change the direction of the main lobe by feeding the two orthogonal elements with different phases.
M. John and M. J. Ammann, "A Pattern Reconfigurable Slot Antenna with Hybrid Feed", European Conference on Antennas and Propagation - EuCAP, Barcelona, Spain, We-35, 12/04/2010.