Aiming at the problem that resonant-type surface acoustic wave（SAW）temperature sensor is difficult to construct large-scale sensor arrays

combinates antenna technology

based on idea of polarization and multiplexing

through frequency division

time division

space angle diversity and polarization

studys on the method for implementing large-scale SAW sensor array.Through the actual test

the results show that the array size increases rapidly with a slight increase in the cost of the number of transmitting antennas

the sensor element in the array can be effectively identified.Experimental results demonstrate the feasibility of the design method.