Abstract: A receiving device includes a reception unit that samples a sample signal from a DUT 2; an FFT processing unit 21 that performs an FFT process by multiplying the sample signal by a window function; an FFT length setting unit 34 that, when the signal length of the signal to be measured is shorter than the first FFT length conforming to the communication standard, 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; and a window function setting unit 35 that, when the signal length of the signal to be measured is shorter than the first FFT length, instead of a first window function, sets an asymmetric second window function having a peak separated from a center of a window section, as the window function.

Abstract: A receiving device includes a reception unit 10 that samples a signal to be measured a transmitted from a DUT 2 and acquires a sample signal d; an FFT processing unit 21 that performs an FFT process by multiplying the sample signal; a signal length calculation unit 31 that calculates a signal length of the signal to be measured from the sample signal; a comparing unit 33 that compares the calculated signal length of the signal to be measured with a first FFT length conforming to a communication standard; and an FFT length setting unit 34 that, when as a result of the comparison by the comparing unit, the signal length is shorter than the first FFT length, sets a second FFT length shorter than the signal length of the signal to be measured, as the FFT length of the FFT process by the FFT processing unit.

Abstract: According to the present disclosure, there is provided a signal generation apparatus including: a base band module (11); a DA converter that converts digital base band signals into modulation signals corresponding to a plurality of cells; an RF converter (20) to which the modulation signals corresponding to the plurality of cells are input, and which outputs an RF signal obtained by frequency-converting the modulation signal; and an RF converter control unit (31), in which the RF converter control unit controls the base band module to reduce a power value of a digital base band signal corresponding to a predetermined cell, among the digital base band signals corresponding to the plurality of cells in the base band module so that an input level of the modulation signal input to the RF converter is equal to or lower than an input limit value of the RF converter.

Abstract: A signal analysis apparatus includes a first frequency conversion unit 10 that generates an intermediate frequency signal SIF2 and a second spurious signal SSP2 from a measured signal SRF of a frequency fRF (center frequency fc), and a second frequency conversion unit 25 that converts the intermediate frequency signal SIF2 and the second spurious signal SSP2 into an intermediate frequency signal SIF2? of a frequency fIF2? and a second spurious signal SSP2? of a frequency fSP2? by performing frequency shift of the intermediate frequency signal SIF2 and the second spurious signal SSP2 by a frequency shift amount ?f, in which the frequency shift amount ?f is a value that does not establish a relationship of ?W/2?fSP2??fIF2??+W/2.

Abstract: An object of the present disclosure is to prevent an output level of an analog signal from exceeding a predetermined upper limit value, in a module that adjusts a level of the analog signal. According to the present disclosure, there is provided a signal generation apparatus including an RF base module (12) that converts a digital base band signal for testing into an intermediate frequency (IF) signal and outputs the IF signal, and a control unit (18), in which the RF base module is connected to an RF converter (20) which outputs an analog RF signal obtained by frequency-converting the IF signal, and the control unit clips the IF signal output from the RF base module based on an output level of the analog RF signal output from the RF converter.

Abstract: A receiving device includes a reception unit that samples a sample signal from a DUT 2; an FFT processing unit 21 that performs an FFT process by multiplying the sample signal by a window function; an FFT length setting unit 34 that, when the signal length of the signal to be measured is shorter than the first FFT length conforming to the communication standard, 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; and a window function setting unit 35 that, when the signal length of the signal to be measured is shorter than the first FFT length, instead of a first window function, sets an asymmetric second window function having a peak separated from a center of a window section, as the window function.

Abstract: A receiving device includes a reception unit 10 that samples a signal to be measured a transmitted from a DUT 2 and acquires a sample signal d; an FFT processing unit 21 that performs an FFT process by multiplying the sample signal; a signal length calculation unit 31 that calculates a signal length of the signal to be measured from the sample signal; a comparing unit 33 that compares the calculated signal length of the signal to be measured with a first FFT length conforming to a communication standard; and an FFT length setting unit 34 that, when as a result of the comparison by the comparing unit, the signal length is shorter than the first FFT length, sets a second FFT length shorter than the signal length of the signal to be measured, as the FFT length of the FFT process by the FFT processing unit.

Abstract: A signal analysis apparatus includes a first frequency conversion unit 10 that generates an intermediate frequency signal SIF2 and a second spurious signal SSP2 from a measured signal SRF of a frequency fRF (center frequency fc), and a second frequency conversion unit 25 that converts the intermediate frequency signal SIF2 and the second spurious signal SSP2 into an intermediate frequency signal SIF2? of a frequency fIF2? and a second spurious signal SSP2? of a frequency fSP2? by performing frequency shift of the intermediate frequency signal SIF2 and the second spurious signal SSP2 by a frequency shift amount ?f, in which the frequency shift amount ?f is a value that does not establish a relationship of ?W/2?fSP2??fIF2??+W/2.

Abstract: According to the present disclosure, there is provided a signal generation apparatus including: a base band module (11); a DA converter that converts digital base band signals into modulation signals corresponding to a plurality of cells; an RF converter (20) to which the modulation signals corresponding to the plurality of cells are input, and which outputs an RF signal obtained by frequency-converting the modulation signal; and an RF converter control unit (31), in which the RF converter control unit controls the base band module to reduce a power value of a digital base band signal corresponding to a predetermined cell, among the digital base band signals corresponding to the plurality of cells in the base band module so that an input level of the modulation signal input to the RF converter is equal to or lower than an input limit value of the RF converter.

Abstract: An object of the present disclosure is to prevent an output level of an analog signal from exceeding a predetermined upper limit value, in a module that adjusts a level of the analog signal. According to the present disclosure, there is provided a signal generation apparatus including an RF base module (12) that converts a digital base band signal for testing into an intermediate frequency (IF) signal and outputs the IF signal, and a control unit (18), in which the RF base module is connected to an RF converter (20) which outputs an analog RF signal obtained by frequency-converting the IF signal, and the control unit clips the IF signal output from the RF base module based on an output level of the analog RF signal output from the RF converter.