The First Dual-Depth Dual-Frequency Choke Ring

V. Filippov, D. Tatarnicov, J. Ashjaee, A. Astakhov, I. Sutiagin

Abstract:	The new design of the choke ring ground plane for dual frequency geodetic surveying systems (patent pending) has been suggested. The grove depth is made different for two frequencies by means of a special diaphragm, which is put in each concentric grove of the ground plane. This allows to optimize the performance for L1 and L2 signals separately. By the mathematical simulation, special dimensions of the ground plane were found out, the grove depth being smaller than the quarter of wavelength for L2 frequency. This enables one to improve performance for L2 signal. Using the above mentioned diaphragm improves the performance for both L1 and L2 bands.
Published in:	Proceedings of the 11th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1998) September 15 - 18, 1998 Nashville, TN
Pages:	1035 - 1040
Cite this article:	Filippov, V., Tatarnicov, D., Ashjaee, J., Astakhov, A., Sutiagin, I., "The First Dual-Depth Dual-Frequency Choke Ring," Proceedings of the 11th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1998), Nashville, TN, September 1998, pp. 1035-1040.
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