Programmable Microwave Delay Line Based on SAW Technology
Bo Jiang · Piezoelectrics and Acoustooptics · 2004
The international standard for radar altimeter is 4.3 GHz. The calibration of altimeter and corresponding target stimulation is implemented by co-core cable delay line or BAW microwave delay line. In this paper a programmable microwave delay line based on SAW technology is introduced, which is realized through programmable cascade of SAW high frequency delay line with frequency transforming by the circuit. Both theoretic and experimental analysis is given, together with the experimental results. No doubt this method has explored a new application for SAW delay line.