Time-domain measurements using a superresolution technique

The superresolution technique is applied to frequency-domain data measured with a network analyzer, and the high-resolution capability is shown by experimental results. A MUSIC (multiple signal classification) algorithm is used because it has several advantages. Experimental results demonstrate that the superresolution technique has a much better capability of resolving signals and analyzing parameters (e.g., the reflection coefficient) than the FFT and the gating technique. The superresolution technique is expected to be useful for time-domain measurements of narrowband devices such as antennas.<>