Simplified Pulse Shaping Network for Microwave Signal Focusing Based on Time Reversal

A simplified pulse-shaping network is proposed for microwave signal focusing based on the time reversal (TR) technique in this letter. The chirped delay line (CDL) designed with chirped electromagnetic-band-gap (CEBG) structures is adopted as the dispersion feedline for predistortion. By using the novel pulse-shaping network with a single CDL, two TR systems with different receiving parts are respectively constructed, analyzed, and tested. The first system contains a 1 ×2 subwavelength array as the receiving array, and the second system has only one receiving antenna. It has been proved experimentally that the time-reversed signals can focus well at the expected output port in both systems, while the TR focusing with super-resolution can be successfully realized in the first system. The proposed network is simple and easy to design.