Sub-wavelength Array With Embedded Chirped Delay Lines Based on Time Reversal Technique

Pulse shaping network for multiplexing in single antenna time reversal system

“…The experiment process is the same as the conventional TR one [7]. The outputs 1 and 2 of the antenna correspond to the outputs at different elements in the conventional TR system.…”

“…Reference [7] achieved the super-resolution by using chirped delay lines with different reflected group delay slopes. The chirped delay lines are embedded into the element of the sub-wavelength array, which serve as independent dispersion feeding lines for pre-distortion.…”

Research on the acquisition of time‐reversed electromagnetic waves based on Fourier transform theory

“…According to the theoretical analysis above, as the core device of analog time reversal mirror system, CDDL can be used not only for chirp signal generation, dispersion compensation, but also for determining the scale of signal waveform transformation. [12][13][14] Therefore, an efficient and compact passive microwave chirped dispersion device can effectively reduce the cost of waveform inversion system and improve the efficiency of the whole time-inversion system. Through modulating the characteristic impedance and combining with the Prague fiber grating technology, 15,16 two CDDLs which meet the system requirements shown in Figure 2 have been designed.…”

Sub-wavelength UWB antenna array with fractal slots and split ring resonators for time reversal super-resolution focusing

“…However, it is not very easy to control the whole TR model and repeat the experiment. Paper [7]- [9] designed several microstrip-fed sub-wavelength planar antenna arrays and tried seeking out simple and practical methods to achieve super-resolution of TR waves.…”