DocumentCode :
2707416
Title :
Robustness of Arrays with Different Waveforms
Author :
Mohammadzadeh, M.G. ; Rashed-Mohassel, J.
Author_Institution :
Dept. of ECE, Tehran Univ.
fYear :
2006
fDate :
9-14 July 2006
Firstpage :
4483
Lastpage :
4486
Abstract :
This paper examines the robustness of the basic waveform of UWB antenna arrays and Gaussian modulated sinusoidal pulse against failure of element. Simulation for circular arrays shows that pattern of Gaussian pulse is more robust and does not change for failure of elements and there is some condition that radiation of Gaussian pulse in sidelobes is zero. For Gaussian and GMS (T), the direction of maximum radiation never changes. According to tables, circular array for both GMS has better energy radiation percent than Gaussian but for linear array only GMS (T) is better. The results of the previous analysis show that significant improvement in the performance of antenna arrays patterns is possible if one is willing to abandon simple narrow-band sinusoidal signals and instead work with time gated ultra-short pulses and wavelets. The GMS is better than Gaussian in angular resolution in both modes T and 2T and it is suitable for radar applications. GMS pulse in case of element failure generates sidelobes but amplitudes of these sidelobes are smaller than Gaussian´s radiation
Keywords :
Gaussian processes; antenna radiation patterns; linear antenna arrays; ultra wideband antennas; GMS (T); Gaussian modulated sinusoidal pulse; UWB antenna array; angular resolution; antenna arrays patterns; circular arrays; element failure; energy radiation percent; linear array; maximum radiation; narrow-band sinusoidal signals; radar applications; time gated ultra-short pulses; waveform robustness; Antenna arrays; Linear antenna arrays; Narrowband; Pattern analysis; Performance analysis; Pulse modulation; Robustness; Signal analysis; Ultra wideband antennas; Wavelet analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
Type :
conf
DOI :
10.1109/APS.2006.1711631
Filename :
1711631
Link To Document :
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