Planar Inverted-F Antenna Design for GSM900 and GSM1800 Frequency Bands for Mobile Handset

Authors: Yashoda Ben, Prof. Zohaib Hasan

Abstract-- This paper Aim to design and simulate a miniaturized Planar Inverted-F Antenna (PIFA) using HFSS for the use in GSM900 band and DCS1800 band. The simulation will involve the characterization of the designed antenna and the computing of different antenna parameters like S11 parameter, resonant frequency, SWR, bandwidth impedance in feeding point, gain, 2D and 3D diagram pattern, Fields distribution describes the design and simulation by HFSS simulator of a probe-fed Planar Inverted-F Antenna (PIFA) for the use in GSM900 band [890 MHz - 960 MHz] and DCS1800 band [1710 MHz - 1880 MHz].

References

[1] A. Elouadih, A. Oulad-Said and M. Hassani, "Design and Parametric Simulation of a Miniaturized PIFA Antenna for the PCS Band," Wireless Engineering and Technology, Vol. 4 No. 2, 2013, pp. 105- 111. doi: 10.4236/wet.2013.42016.

[2] A. Elouadih, A. Oulad-Said and M. Hassani, "Design and Parametric Simulation of a Bi-Band Miniaturized PIFA Antenna for the GSM900 and DCS1800 Bands," Journal of Electromagnetic Analysis and Applications, Vol. 5 No. 5, 2013, pp. 189-195. doi: 10.4236/jemaa.2013.55030.

[3] A. Elouadih, A. Oulad-Said and M. Hassani, "Design and Simulation by HFSS of a Slim UWB PIFA Antenna," World Journal of Engineering and Technology, Vol. 1 No. 2, 2013, pp. 17-22. doi: 10.4236/wjet.2013.12003.

[4] N. Firoozy and M. Shirazi, "Planar Inverted-F Antenna (PIFA) Design Dissection for Cellular Communication Application," Journal of Electromagnetic Analysis and Applications, Vol. 3 No. 10, 2011, pp. 406-411. doi: 10.4236/jemaa.2011.310064.

[5] H. Chattha, Y. Huang, M. Ishfaq and S. Boyes, "A Comprehensive Parametric Study of Planar Inverted-F Antenna," Wireless Engineering and Technology, Vol. 3 No. 1, 2012,pp.1-11. doi: 10.4236/wet.2012.31001.

[6] R. Gomez-Villanueva, R. Linares-y-Miranda, J. A. Tirado-Mendez, and H. Jardon-Aguilar, "Ultra-wideband planar inverted-f antenna (PIFA) for mobile phone frequencies and ultra-wideband applications," Progress In Electromagnetics Research C, Vol. 43, 109-120, 2013. doi:10.2528/PIERC13071803

[7] Rod Waterhouse, Printed antennas for wireless communication, John Wiley and Sons

[8] Geyi W. Rao Q. Ali S. & Wang D. (2008). Handset antenna: practice and theory. Progress in Electromagnetics Research, PIER. Vol. 80, pp. 23–160.

[9] Zhang Z. (2011). Antenna Design for Mobile Devices. 4th edition. John Wiley & Sons Ltd, Singapore, pp. 11.

Minimizing Human-Robot Interaction Force Using Proportional Derivative Compensation in Lower Exoskeleton Control

Authors: Duong Mien Ka, Hong Cheng, Tran Huu Toan

Abstract—A lower extremity exoskeleton for human performance augmentation is an electromechanical structure worn by an operator and matching the shape and functions of human lower extremity leg. The exoskeleton is always in interaction with the operator during motions and integrated with human intention recognition that can increase the speed, strength, and endurance of the operator with minimal effort over type of rugged terrain. Therefore, it is important to study on human robot interaction, which will help us understand the dynamical characteristics in human and robot motions, and will improve the control quality significantly. We are also developing a lower extremity exoskeleton for human performance enhancement that called PRMI exoskeleton. In our study, the proportional derivative compensation is proposed in the hybrid control that includes position control and virtual torque control to deal with uncertainty model errors that were still limited in many previous studies. The proposed method minimizes the human robot interaction torque during human’s movements. The experiment results in the paper are demonstrated and a real prototype being developed is introduced to verify our proposed methods.

Keywords—Exoskeleton, dynamic model, human augmentation, human-robot interaction

References-

[1] M. Dollar and H. Herr, ―Lower Extremity Exoskeletons and Active Orthoses: Challenges and State-of-the-Art‖ IEEE Transactions on Robotics, Vol.24, No.1, 2008

[2] K. Anama, Adel Ali Al-Jumailyb, ―Active Exoskeleton Control Systems: State of the Art‖, International Symposium on Robotics and Intelligent Sensors, 2012 (IRIS 2012)

[3] W. Huo, S. Mohammed, J. C. Monero, and Y. Amirat, ―Lower Limb Wearable Robots for Assistance and Rehabilitation: A State of the Art,‖ IEEE Systems Journal, no. 99, pp. 1-14, 2015.

[4] C. Mendez, Y. Aoustin, and C. Rengifo, ―Evaluation of the Aid Provided by an Exoskeleton in the Reduction of the Joint Torques Exerted by Human Lower Limbs: A Simulation Study,‖ Latin America Transactions, IEEE (Revista IEEE America Latina) , vol.13 , no. 2 , pp. 428 – 433, 2015.

[5] D. Chen, M. Ning, B. Zhang, and G. Yang, ―Control strategy of the lower-limb exoskeleton based on the EMG signal,‖ IEEE International Conference on Robotics and Biominmetrics (ROBIO), pp. 2416-2420, 2014.

[6] A.Tsukahara, Y. Hasegawa, and Y. Sankai, ―Gait support for complete spinal cord injury patient by synchronized leg-swing with HAL‖, IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2011.

[7] B.C. Tsai, W.W. Wang, L.C. Hsu, L.C. Fu, and J.S. Lai, "An articulated rehabilitation robot for upper limb physiotherapy and training," IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS),2010.

[8] S. Jezernik, G. Colombo, T. Keller, H. Frueh, and M. Morari, ―Robotic orthosis Lokomat: a rehabilitation and research tool, Neuromodulation: Technology at the Neural Interface‖, vol. 6, no. 2, pp. 108-115, 2003.

[9] H.Kawamoto, Y. Sankai, ―Comfortable Power Assist Control Method for Walking Aid by HAL-3‖, IEEE SMC, 2002.

[10] Y.Sankai, ―HAL: Hybrid Assistive Limb based on Cybernics‖, Global COE Cybernics,System and Information Engineering, University of Tsukuba Tennodai, Tsukuba, Ibaraki, 305-8573, Japan.

[11] H. Kawamoto, Y.Sankai, ―Power Assist Method Based on Phase Sequence Driven by Interaction between Human and Robot Suit‖, Proceedings of the 2004 IEEE International Workshop on Robot and Human Interactive Communication Kurashiki, Okayama Japan, September 20-22, 2004.

[12] H.Kazerooni, ―Exoskeleton for Human Power Augmentation‖, IEEE/RSJ International Conference on intelligent Robots and Systems, 2005.

[13] A. Zoss, H.Kazerooni, ―On the Mechanical Design of the Berkeley Lower Extremity Exoskeleton (BLEEX)‖, IEEE/RSJ International Conference on intelligent Robots and Systems, 2005.

[14] H. Kazerooni, A.Chu, R. Steger, ―That Which Does Not Stabilize, Will Only Make Us Stronger‖, The International Journal of Robotics Research Vol. 26, No. 1, pp. 75-89, January 2007.

[15] H. Kazerooni, J.L.Racine, L.Huang, and R.Steger, ―On the Control of the Berkeley Lower Extremity Exoskeleton (BLEEX)‖, Proceedings of the 2005 IEEE International Conference on Robotics and Automation, Barcelona, Spain, April 2005.

[16] H.Kazerooni, R.Steger, L.Huang, ―Hybrid Control of the Berkeley Lower Extremity Exoskeleton (BLEEX)‖, International Journal of Robotics Research, Vol.25, No.5-6, pp.561-573, May-June 2006.

[17] Z.Yang, L.Gui, X.Yang, W.Gu, Y.Zhang, ―Simulation Research of Exoskeleton Suit Based on Neural network Sensitivity Amplification Control‖, Proceedings of the IEEE International Conference on Automation and Logistics, Jinan, China, August 18 - 21, 2007.

[18] I. P. Herma, 2008, Physics of the Human Body, Springer.