1. Anastasi, G., M. Conti, M. Francesco, and A. Passarella, "Energy conservation in wireless sensor networks: A survey," Ad Hoc Networks, Vol. 7, No. 3, 537-568, 2009.
doi:10.1016/j.adhoc.2008.06.003
2. Girban, G. and M. Popa, "A glance on WSN lifetime and relevant factors for energy consumption," Computational Cybernetics and Technical Informatics (ICCC-CONTI), 2010.
3. Chen, Y. and Q. Zhao, "On the lifetime of wireless sensor networks," IEEE Communications Letters, Vol. 9, No. 11, 2005.
4. Catarinucci, L., R. Colella, and L. Tarricone, "A cost-effective UHF RFID tag for transmission of generic sensor data in wireless sensor networks," IEEE Transactions on Microwave Theory and Techniques, Vol. 57, No. 5, Part 2, 1291-296, 2009.
5. Catarinucci, L., "A new enhanced UHF RFID sensor-tag," Proc. of the 5th European Conference on Antennas and Propagation, EUCAP 2011, Rome, Italy, Apr. 2011.
6. Catarinucci, L., R. Colella, and L. Tarricone, "Optimized antennas for enhanced RFID sensor tags," Proc. of IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), Spokane, Washington, Jul. 2011.
7. Catarinucci, L., R. Colella, and L. Tarricone, "Enhanced UHF RFID sensor-tag," IEEE Microwave and Wireless Components Letters, Vol. 23, No. 1, 49-51, Jan. 2013.
doi:10.1109/LMWC.2012.2234092
8. Catarinucci, L., R. Colella, A. Esposito, L. Tarricone, and M. Zappatore, "RFID sensor-tags feeding a context-aware rule-based healthcare monitoring system," Journal of Medical Systems (JOMS), Vol. 36, No. 6, 3435-3449, Springer, 2011.
doi:10.1007/s10916-011-9794-y
9. Giorgetti, G., A. Cidronali, S. K. S. Gupta, and G. Manes, "Exploiting low-cost directional antennas in 2.4 GHz IEEE 802.15.4 wireless sensor networks," Proceedings of the 10th European Conference on Wireless Technology, 2007.
10. Lai, M.-I., T.-Y. Wu, J.-C. Hsieh, C.-H. Wang, and S.-K. Jeng, "Pattern reconfigurable antenna for a wireless sensor network sink node," Microwave Conference Proceedings (APMC), 2010.
11. Lai, M.-I., T. Y. Wu, J. C. Hsieh, C. H. Wang, and S. K. Jeng, "Compact switched-beam antenna employing a four-element slot antenna array for digital home applications," IEEE Transactions on Antennas and Propagation, Vol. 56, No. 9, 2929-2936, 2008.
doi:10.1109/TAP.2008.928775
12. Chang, D.-C., B.-H. Zeng, and J.-C. Liu, "Reconfigurable angular diversity antenna with quad corner reflector arrays for 2.4 GHz applications," IET Microwaves, Antennas & Propagation, Vol. 3, No. 3, 522-528, 2009.
doi:10.1049/iet-map.2008.0119
13. Zhang, S., G. H. Huff, and J. T. Bernhard, "A pattern reconfigurable microstrip parasitic array," IEEE Transactions on Antennas and Propagation, Vol. 52, No. 10, 2773-2776, 2004.
doi:10.1109/TAP.2004.834372
14. Collin, E., Foundation of Microwave Engineering, McGraw Hill, New York, 2007.
15. Wadell, B. C., "Transmission Line Design Handbook," Artech House Microwave Library, 1991.
16. Garg, R., P. Bhartia, I. Bahl, and A. Ittipiboon, Microstrip Antenna Design Handbook (Artech House Antennas and Propagation Library), Artech House Microwave Library, 2001.
17. Balanis, C. A., Antenna Theory: Analysis and Design, 3rd Ed., John Wiley & Sons, 1997.