This work describes the development of an optically controlled reconfigurable E-antenna for cognitive and adaptive radio communications systems at 2.4 and 5.8 GHz ISM bands. Numerical simulations and experiments demonstrate the antenna frequency response can be efficiently adapted in the optical domain over two different frequency bands. © 2013 IEEE. Universitat Politecnica de ValenciaMitola III, J.M., Maguire Jr., G.Q., Cognitive radio: Making software radios more personal (1999) IEEE Personal Communications Magazine, 6 (4), pp. 13-18. , AugLona, D.G., Assumpção, R.M., Branquinho, O.C., Abbade, M.L.F., Figueroa, H.E.H., Arismar Jr., C.A., Implementation and performance investigation of radio-over-fiber systems in wireless sensor networks (2012) Microwave and Optical Technology Letters, 54, pp. 2669-2675Christodoulou, C.G., Tawk, Y., Lane, S.A., Erwin, S.R., Reconfigurable antennas for wireless and space applications (2012) Proceedings of the IEEE, 100 (7). , JulyTawk, Y., Costantine, J., Hemmady, S., Balakrishnan, G., Avery, K., Christodoulou, C.G., Demonstration of a cognitive radio front end using an optically pumped reconfigurable antenna system (OPRAS) (2012) IEEE Transactions on Antennas and Propagation, 60 (2). , FebruaryPanagamuwa, C.J., Chauraya, A., Vardaxoglou, J.C., Frequency and beam reconfigurable antenna using photoconducting switches (2006) IEEE Transactions on Antennas and Propagation, 54 (2). , FebruaryKhidre, A., Lee, K.-F., Yang, F., Elsherbeni, A.Z., Circular polarization reconfigurable wideband e-shaped patch antenna for wireless applications (2013) IEEE Transactions on Antennas and Propagation, 61 (2). , February