Finite element modelling of SAW correlator

Ajay C. Tikka; Said F. Al-Sarawi; Derek Abbott

doi:10.1117/12.764795

27 December 2007 Finite element modelling of SAW correlator

Ajay C. Tikka, Said F. Al-Sarawi, Derek Abbott

Proceedings Volume 6799, BioMEMS and Nanotechnology III; 679915 (2007) https://doi.org/10.1117/12.764795
Event: SPIE Microelectronics, MEMS, and Nanotechnology, 2007, Canberra, ACT, Australia

Abstract

Numerical simulations of SAW correlators so far are limited to delta function and equivalent circuit models. These models are not accurate as they do not replicate the actual behaviour of the device. Manufacturing a correlator to specifically realise a different configuration is both expensive and time consuming. With the continuous improvement in computing capacity, switching to finite element modelling would be more appropriate. In this paper a novel way of modelling a SAW correlator using finite element analysis is presented. This modelling approach allows the consideration of different code implementation and device structures. This is demonstrated through simulation results for a 5×2-bit Barker sequence encoded SAW correlator. These results show the effect of both bulk and leaky modes on the device performance at various operating frequencies. Moreover, the ways in which the gain of the correlator can be optimised though variation of design parameters will also be outlined.

Citation Download Citation

Ajay C. Tikka, Said F. Al-Sarawi, and Derek Abbott "Finite element modelling of SAW correlator", Proc. SPIE 6799, BioMEMS and Nanotechnology III, 679915 (27 December 2007); https://doi.org/10.1117/12.764795

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