1.Antennas: Small antennas, multi antennas for wireless communication terminals, Antenna array for satellite communication systems and wireless network, SSPPs antenna, nano antenna and so on.
2.Multi Beam Array: Multibeam antennas, Scanning beamforming techniques, Reconfigurable antenna, Reconfigurable switches network.
3.Computational electromagnetic: especially in the combination of MoM, GTD, FDTD and GA & PSO for Optimal Model to the antenna design.
4.Optic systems: especially for the Active nano antenna, array and the Fully distributed optic fiber sensor
1. J. Geng，R. W. Ziolkowski，R. Jin，X. Liang, “Detailed performance characteristics of vertically polarized,cylindrical, active coated nano-particle antennas,” Radio Sci., VOL. 47,Issue 2, p. RS2013, doi:10.1029/2011RS004898, April 2012
2. Junping Geng，Richard W. Ziolkowski，Ronghong Jin，Xianling Liang，Numerical Study of the Near-Field and Far-Field Properties of Active Open Cylindrical Coated Nanoparticle Antennas, IEEE Photonics Journal, Dec., 2011, 3 (6), pp.1092-1110.
3. J. P. Geng, J. J. Li, R. H. Jin, S. Ye, X. L. Liang and M.Z.Li, The development of the curved microstrip antenna with defected ground structure, Progress In Electromagnetics Research, PIER 98, 53-73, 2009.
4. Hao Wu, Junping Geng, Ronghong Jin, Jizheng Qiu, Wei Liu, Jing Chen, Suna Liu, “An Improved Comprehensive Learning Particle Swarm Optimization and Its Application to the Semi-automatic Design of Antennas”, IEEE Transactions On Antennas and Propagation, 2009, 57, (10), pp. 3018-3028.
5. Geng, J.；Jin, R.; Wang, W.; He, W.; Ding, M.; Wu, Q.; Rui, X.; Yang, G.; Fang, Z.,A new quasi-omnidirectional vertical polarisation antenna with low profile and high gain for DTV on vehicle， Microwaves, Antennas & Propagation, IET，Page(s): 918-924.Vol.1,Issue:4,Aug. 2007.
6. Junping Geng, Ronghong Jin, etc "The Study on Electromagnetic Interferences of Electric Motor in HAPS", Aerospace Science and Technology, vol.9(7), p 617-625, 2005.
7. Junping Geng, Ronghong Jin, etc., "An Improved Model for the Fully Distributed Temperature Single-mode Fiber Optic Sensor Based on Raman Optical Frequency-domain Reflectometry (ROFDR)"，Journal of Optics A: Pure and Applied Optics. Vol.6, pp.932-936, 2004.
8. Junping Geng, Jiadong Xu, etc., "The Development of the Model and Arithmetic for the Fully Distributed Fiber Optic Sensor Based on Raman Optical-fiber Frequency-domain Reflectometry (ROFDR)", Sensors and Actuators (A), vol.101/1-2, pp.132-136, 2002.
9. Upadhyaya N. Rijal, J. Geng, X. Liang, R. Jin, X. Liu, and K Wang, STUDY ON THE PLANAR CIRCULARLY POLARIZED ANTENNAS WITH SWASTIKA SLOT, Progress In Electromagnetics Research C, Vol. 39, 11-24, 2013.
10. Tang Jingjing；Geng Jun-Ping；Jin, Ronghong; Liang, Xianling, A General Method for Modeling Packaged Diode Spanning Multiple Cells in FDTD, IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, Vol.12, pp. xx, 2013.
11. M. Liu*, R. Jin, J. Geng, and X. Liang LOW-INSERTION LOSS PIN DIODE SWITCHES USING IMPEDANCE-TRANSFORMATION NETWORKS, Progress In Electromagnetics Research C, Vol. 34, 195-202, 2013.
12. Jia Lao, Ronghong Jin, and Junping Geng, A ROTATED ELLIPTICAL SLOT ANTENNA WITH ULTRA-WIDE BANDWIDTH, MICROWAVE AND OPTICAL TECHNOLOGY LETTERS / Vol. 55, No. 2, pp. 308-310,February 2013
13. Sheng Ye, Xianling Liang, Wenzhi Wang, Ronghong Jin, Junping Geng, Trevor S. Bird,and Y. Jay Guo, High gain planar antenna arrays for mobile satellite communications, IEEE Antennas and Propagation Magazine, vol.54, no.6, 2012, pp.256-268.
14. Wenzhi Wang, Sheng Ye , Xianling Liang, Ronghong Jin, Trevor S. Bird, Y. Jay Guo, Geng Junping, Even- and odd-mode analysis of thick and wide slot in waveguides based on a variational method, IEEE Transactions on Microwave Theory and Techniques, vol.60, no.11, Nov. 2012, pp.3349-3358.
15. Nan Zheng, Ronghong Jin, Xianling Liang, Junping Geng, A modified lumped-network finite-difference time-domain method, IEEE Antennas and Wireless Propagation Letters, vol.11, 2012, pp.326- 329.
16. Yuanxin Wang, Ronghong Jin, Xianling Liang, Junping Geng, Propagation of SLF/ELF electromagnetic waves excited by an underground HED in the lower ionosphere, IEEE Transactions on Antennas and Propagation, vol.60, no.11, Nov. 2011, pp.5412-5418.
17. Xianling Liang, T. A. Denidni , Lina Zhang, Ronghong Jin, Junping Geng, Quan Yu, Printed binomial-curved slot antennas for various wideband applications, IEEE Transactions on Microwave Theory and Techniques, vol.59, no.4, April 2011, pp.1058 –1065.
18. Yuanxin Wang, Ronghong Jin, Junping Geng, Xianling Liang, Exact SLF/ELF underground HED field strengths in earth-ionosphere cavity and schumann resonance, IEEE Transactions on Antennas and Propagation, vol.59 , no.8, Aug. 2011, pp.3031 –3039.