Anritsu Corporation

Yoshitaka Kihara

Shinichi Ito

Naoki Inoue

Masayuki Shimizu

Takayuki Awano

Naofumi Naruse

Takaaki Kamisawa

Takahiro Kasagi

Kengo Kikuchi

Koji Fukazawa

Keiichi Mineda

Custodio Jean-Elaine Garcia

Shigeharu Arai

Yuichi Tsuiki

Shunsuke Hinooka

Mamoru Iwamoto

Paulo-Jessie Morales

Micael-Lacson Magpayo

A signal analysis apparatus includes a frequency conversion unitthat includes a first local oscillatorwhich outputs a first local oscillation signal Sof a frequency f, a first mixerwhich generates a first spurious signal of a frequency f, a first BPFof a passed center frequency f, a second local oscillatorwhich outputs a second local oscillation signal Sof a frequency f, and a second BPFof a passed bandwidth W, and that performs frequency conversion of a measured signal Sof a frequency f(center frequency fc), in which the frequency fand the frequency fare shifted using a frequency shift amount &#x394;f that does not establish a relationship of &#x2212;W/2&#x2264;|f&#x2212;f&#xb1;f&#x2212;&#x394;f|&#x2212;f&#x2264;+W/2.

Signal analysis apparatus and signal analysis method

A measurement device and a measurement method capable of performing measurement on a device under test while maintaining a desired high data rate even under poor communication conditions such as occurrence of retransmission of a frame from a device under test in a wireless communication connection are provided. The measurement device includes a reception unitthat receives a frame transmitted from a DUT, a determination unitthat determines whether or not a header of the frame has been normally received by the reception unit, an acknowledgment transmission unitthat transmits the acknowledgment frame to the DUTwhen the determination unitdetermines that the header has been normally received by the reception unit; and a measurement unitthat performs the measurement on the frame determined by the determination unitthat the header has been normally received by the reception unit

Measurement device and measurement method

In a case where testing of uplink carrier aggregation that is a frequency arrangement in which a primary component carrier and a secondary component carrier are contiguous is performed, a control unitcauses a call processing unitto configure a transmission signal of a mobile terminalin such a manner that the transmission signal satisfies a prescribed condition for user data transmission, and causes a wireless signal measurement unitto detect a local oscillation frequency from a band that includes a frequency band in which a primary component carrier and a secondary component carrier are contiguous, using a reception signal that satisfies the prescribed condition for user data transmission.

Mobile terminal testing apparatus and local oscillation frequency detection method for mobile terminal testing apparatus

Frequency comparison means compares the levels of uplink (UL) and downlink (DL) frequencies which are designated by frequency designation means. When it is determined that the UL frequency is lower than the DL frequency, heterodyne switching means enables a receiving unit to perform frequency conversion using a lower-side heterodyne system and signal processing is performed, using one baseband signal and the other baseband signal obtained by a quadrature demodulation process as an in-phase component and a quadrature component, respectively. When it is determined that the UL frequency is higher than the DL frequency, the heterodyne switching means enables the receiving unit to perform the frequency conversion using an upper-side heterodyne system and signal processing is performed, using the one baseband signal and the other baseband signal obtained by the quadrature demodulation process as the quadrature component and the in-phase component, respectively.

Mobile terminal test device and mobile terminal test method

In a system for testing a mobile communication device under test, a calculation part calculates, before a control part starts processing according to a designated measurement sequence, a total value of a data amount to be acquired as an analysis target by a transmission/reception unit in the designated measurement sequence. A determination part determines whether the calculated total value of the data amount exceeds a permissible value which has been set in advance according to a predetermined capacity of a reception data memory. If the determination part determines that the calculated total value exceeds the permissible value, the control part displays the determination result on the display unit.

System for testing mobile communication apparatus and test method therefor

To enable addition or changes of functions with changes of communication standards in a mobile communication terminal test system. A mobile communication terminal test system includes a transceiver which has a control unit configured to append input information to acquired waveform data, a signal analysis unit which executes an analysis program, and a signal analyzer which is provided separately from the transceiver. The analysis program has a processing program which is provided for each type of arithmetic processing on the waveform data, a control program which is provided for each communication system, selects one or more processing programs for each test item, and executes the processing programs, and a switching program which specifies a communication system and a test item on the basis of the input information, and selects and executes a control program.

Mobile communication terminal test system, analysis method, and analysis program

Growing community of inventors

Kanagawa, Japan

Yoshitaka Kihara