volume | PIER Journals

Abstract

The new definition of arbitrary isolation between antennas is proposed according to the microwave network theory. The multilevel fast multipole algorithm (MLFMA) with the near-field preconditioner is implemented to predict the isolation between multiple antennas on electrically large platforms over a wide frequency range. Experimental results show that the isolation defined in this paper is more practical than the traditional one. Finally the radiation pattern and the isolation results for the ultra-shortwave antennas mounted on full-scale models such as an aircraft and a ship are obtained and discussed, which can give significant instructions to the platform-mounted antennas design.

1. Pathak, P. H. and N. Wang, "Ray analysis of mutual coupling between antennas on a convex surface," IEEE Trans. Antennas and Propagat., Vol. 29, No. 6, 911-922, 1981.
doi:10.1109/TAP.1981.1142682 Google Scholar

2. Liang, C. H., "New theory of isolation between antennas," IEEE International Symposium on MAPE, Vol. 1, 285-288, 2005.

3. Wallen, H. and J. Sarvas, "Translation procedures for broadband MLFMA," Progress in Electromagnetics Research, Vol. 55, 47-78, 2005.
doi:10.2528/PIER05021001 Google Scholar

4. Wan, J. X. and C. H. Liang, "A fast analysis of scattering from microstrip antennas over a wide band," Progress In Electromagnetics Research, Vol. 50, 187-208, 2005.
doi:10.2528/PIER04052801 Google Scholar

5. Wan, J. X., T. M. Xiang, and C. H. Liang, "The fast multipole algorithm for analysis of large-scale microstrip antenna arrays," Progress In Electromagnetics Research, Vol. 49, 239-255, 2004.
doi:10.2528/PIER04042201 Google Scholar

6. Song, J. M., C. C. Lu, and W. C. Chew, "Multilevel fast multipole algorithm for electromagnetic scattering by large complex objects," IEEE Trans. Antennas and Propagat., Vol. 45, No. 10, 1488-1493, 1997.
doi:10.1109/8.633855 Google Scholar

7. Song, J. M. and W. C. Chew, "Multilevel fast-multipole algorithm for solving combined field integral equations of electromagnetic scattering," Microwave and Optical Technology Letters, Vol. 10, No. 1, 14-19, 1995. Google Scholar

8. Chao, H. Y., "The multilevel fast multipole algorithm for electromagnetic compatibility analysis," IEEE International Symposium on Electromagnetic Compatibility, Vol. 2, 844-847, 1999.

9. Xie, Y., J. He, A. Sullivan, and L. Carin, "A simple preconditioner for electric-field integral equations," Microwave and Optical Technology Letters, Vol. 30, No. 1, 51-54, 2001.
doi:10.1002/mop.1218 Google Scholar

10. Zhang, Y., Y. Xie, and C. H. Liang, "Application of the SNpreconditioning method to the integral equations for a slot-array antenna," Microwave and Optical Technology Letters, Vol. 37, No. 4, 302-305, 2003.
doi:10.1002/mop.10901 Google Scholar

11. Zhang, Y., Y. Xie, and C. H. Liang, "A highly effective preconditioner for MoM analysis of large slot arrays," IEEE Trans. Antennas and Propagat., Vol. 52, No. 5, 1379-1382, 2004.
doi:10.1109/TAP.2004.827509 Google Scholar

12. Sleijpen, G. L. G. and D. R. Fokkema, "BiCGstab(ell) for linear equations involving unsymmetric matrices with complex spectrum," Elec. Trans. Num. Analy., Vol. 1, 11-32, 1993. Google Scholar

13. Carr, M. A., M. K. Bleszynski, and J. L. Volakis, "A nearfield preconditioner and its performance in conjunction with the BiCGstab(ell) solver," IEEE Trans. Antennas and Propagat., Vol. 46, No. 2, 23-30, 2004. Google Scholar

14. Costa, M. F., "Electromagnetic radiation and scattering from a system of conducting bodies interconnected by wires," Diploma, 1979. Google Scholar

15. Liang, C. H., Microwave Calculation, 94-99, 94-99, 1985.

Dr. Xun-Wang Zhao

Dr. Xiao-Jie Dang

Dr. Yu Zhang

Professor Chang-Hong Liang