Title :
P2H-2 Phases of Carrier Wave in a SAW Identification Tags
Author :
Han, Tao ; Wang, Weibiao ; Lin, Ji Ming ; Wu, Haodong ; Wang, Hao ; Shui, Yongan
Author_Institution :
Shanghai Jiaotong Univ., Shanghai
Abstract :
The implementation of SAW tags with phase modulation is more difficult than the amplitude and the time position modulation. Using the source regeneration theory, the optimization design of the pulse position with simultaneous phase modulation tags is discussed in this paper. Several SAW tags at 915 MHz are simulated using FEM/BEM simulators. The phase, peak value and delay time of each reflective echo are well agreed with the designing. The phase deviation is less than 10deg, in general is less than 2-3deg, the peak value fluctuation is less than +0.8 dB
Keywords :
acoustic pulses; boundary-elements methods; finite element analysis; surface acoustic wave devices; FEM/BEM simulators; SAW identification tags; carrier wave phases; optimization design; phase modulation; pulse position; Delay effects; Design optimization; Phase modulation; Propagation delay; Pulse measurements; Pulse modulation; Reflection; Reflectivity; Scattering; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 2007. IEEE
Conference_Location :
New York, NY
Print_ISBN :
978-1-4244-1384-3
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2007.420
