Patent ID: 11892498
Assignee: ANRITSU CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 9:
10. A mobile terminal test apparatus comprising:
a receiving device including
a reception unit that samples a signal to be measured, transmitted from a device under test, and acquires a sample signal,
an Fast Fourier Transform (FFT) processing unit that performs an FFT process by multiplying the sample signal acquired by the reception unit by a window function,
a signal length calculation unit that calculates a signal length of the signal to be measured from the sample signal acquired by the reception unit,
a comparing unit that compares the calculated signal length of the signal to be measured with a first FFT length conforming to a communication standard,
an FFT length setting unit that when as a result of the comparison by the comparing unit, the signal length of the signal to be measured is shorter than the first FFT length, instead of the first FFT length, sets a second FFT length shorter than the signal length of the signal to be measured, as an FFT length of the FFT process by the FFT processing unit, and
a window function setting unit that when as the result of the comparison by the comparing unit, the signal length of the signal to be measured is shorter than the first FFT length, instead of a first window function which is currently set as the window function used in the FFT process, sets an asymmetric second window function having a peak separated from a center of a window section, as the window function used in the FFT process;

an analysis unit that analyzes a signal obtained by the FFT processing unit; and
a display unit that displays a result of the analysis performed by the analysis unit.