公开(公告)号：DE10083909T1

公开(公告)日：2002-01-10

申请号：DE10083909

申请日：2000-02-07

Applicant: ADVANTEST CORP ,  ADVANTEST AMERICA R & D CT INC

Inventor： NAKAYAMA YOSHIKAZU ,  WAGATA HIROTAKE ,  IIDA MINORU

IPC: G01R27/28 ,  G01R35/00 ,  G01R15/12

Abstract: A multi-port device analysis apparatus is capable of analyzing a multi-port device having three or more with improved efficiency and accuracy. The multi-port device analysis apparatus includes: a signal source for providing a test signal to one of terminals of a multi-port device under test (DUT); a plurality of test ports for connecting all of the terminals of the multi-port DUT to the corresponding test ports; a plurality of measurement units for measuring signals from the corresponding test ports; a reference signal measurement unit for measuring the test signal for obtaining reference data; a plurality of terminal resistors each being assigned to one of the test ports; and switch means for selectively providing the test signal to one of the test ports (input port) and disconnecting the terminal resistor from the input port while connecting the terminal resistors to all the other test ports; wherein parameters of the multiport DUT are acquired without changing the connections between the test ports and the terminals of the DUT, while changing selection of the test port until all of the test port being assigned as the input port.

公开(公告)号：DE102012210498A1

公开(公告)日：2012-12-27

申请号：DE102012210498

申请日：2012-06-21

Applicant: ADVANTEST CORP

Inventor： IIDA MINORU ,  KIMURA TAKASHI

IPC: G01R23/16

Abstract: Ein Signalmessgerät gemäß der vorliegenden Erfindung umfasst eine Mehrzahl von Mischern, eine einzelne lokale Signalquelle, eine Differenz-Messeinheit, eine Pegel/Phasen-Messeinheit und eine Differenz-Korrektureinheit. Gemäß dem so konstruierten Signalmessgerät geben eine Mehrzahl von Mischern ein Signal aus, welches eine Frequenz gleich einer Differenz zwischen zwei Eingabefrequenzen aufweist, und eine lokale Signalquelle der Mehrzahl von Mischern eine gemeinsame lokale Signaleingabe zuführt. Eine Differenz-Messeinheit misst eine Pegeldifferenz und eine Phasendifferenz zwischen den Ausgaben der Mehrzahl von Mischern, wenn der Mehrzahl von Mischern eine gemeinsame Korrektursignaleingabe zugeführt wird, und eine Pegel/Phasen-Messeinheit misst den Pegel und die Phase der Ausgabe der Mehrzahl von Mischern, wenn die Eingaben der zu messenden Signale, welche in der Frequenz gleich sind, der Mehrzahl von Mischern zugeführt werden. Eine Differenz-Korrektureinheit korrigiert ein Messergebnis der Pegel/Phasen-Messeinheit basierend auf einem Messergebnis der Differenz-Messeinheit, wenn der Mehrzahl von Mischern eine gemeinsame Eingabe des zu messenden Signals zugeführt wird.

公开(公告)号：JP2014074614A

公开(公告)日：2014-04-24

申请号：JP2012221473

申请日：2012-10-03

Applicant: Advantest Corp ,  株式会社アドバンテスト

Inventor： IIDA MINORU

IPC: G01R23/16 ,  G01R23/14 ,  G01R23/173 ,  H04B1/26

Abstract: PROBLEM TO BE SOLVED: To suppress the occurrence of measurement errors due to a local feedthrough (zero carrier).SOLUTION: A signal measuring device 1 includes: a mixer 12 that outputs a signal having a frequency that is equivalent to a difference between a frequency of a signal to be measured, which is input from an RF terminal, and a frequency of a local signal, which is output by a first local signal source 22; an A/D converter 32 that receives an analog signal and converts it into a digital signal; and switches 41 and 49 that set a signal, which has passed through the mixer 12, or the signal to be measured as an input to the A/D converter 32. Further, the A/D converter 32 to which the signal that has passed through the mixer 12 is provided and the A/D converter 32 to which the signal to be measured is provided are in common.

Abstract translation: 要解决的问题：抑制由于局部馈通（零载波）引起的测量误差的发生。解决方案：信号测量装置1包括：混频器12，其输出具有等于频率 从RF终端输入的要测量的信号和由第一本地信号源22输出的本地信号的频率; A / D转换器32，其接收模拟信号并将其转换为数字信号; 以及将已经通过混频器12的信号设置的开关41和49或作为输入的待测信号作为A / D转换器32.此外，已经通过的信号的A / D转换器32 通过混频器12被提供，并且设置有待测量信号的A / D转换器32是共同的。

公开(公告)号：JP2013007616A

公开(公告)日：2013-01-10

申请号：JP2011139579

申请日：2011-06-23

Applicant: Advantest Corp ,  株式会社アドバンテスト

Inventor： IIDA MINORU ,  KIMURA TAKUJI

IPC: G01R23/173

CPC classification number: G01R23/16 ,  G01R35/005

Abstract: PROBLEM TO BE SOLVED: To cope with inconsistency in levels and phases of local signals of each of multiple channels in a spectrum analyzer having the multiple channels.SOLUTION: A signal measurement device 1 includes: multiple mixers 14, 24 for outputting a signal of a frequency equal to the difference between two input frequencies; a single local signal source 12 for giving a local signal input common between the multiple mixers 14, 24; a difference measurement part 54 for measuring a level difference and a phase difference between outputs of the multiple mixers 14, 24 when giving a common correction signal input to the multiple mixers 14, 24; level and phase measurement parts 18, 28 for measuring levels and phases of outputs of the multiple mixers 14, 24 when giving a common measured signal input to the multiple mixers 14, 24; and a difference correction part 56 for correcting the measurement result by the second level and phase measurement part 28 in giving a common measured signal input to the multiple mixers 14, 24 on the basis of the measurement result by the difference measurement part 54.

Abstract translation: 要解决的问题：为了解决具有多个信道的频谱分析仪中的多个信道中的每个信道的本地信号的级别和相位的不一致性。 信号测量装置1包括：多个混频器14,24，用于输出频率等于两个输入频率之间的频率的信号; 单个本地信号源12，用于在多个混频器14,24之间给出共同的本地信号输入; 差分测量部分54，用于在给予输入到多个混合器14,24的公共校正信号时测量多个混合器14,24的输出之间的电平差和相位差; 电平和相位测量部件18,28，用于当给出输入到多个混频器14,24的公共测量信号时测量多个混频器14,24的输出的电平和相位; 以及差分校正部分56，用于根据差分测量部分54的测量结果，给出输入到多个混合器14,24的公共测量信号，用于校正第二电平和相位测量部分28的测量结果。

版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2001272428A

公开(公告)日：2001-10-05

申请号：JP2000025394

申请日：2000-02-02

Applicant: ADVANTEST CORP

Inventor： IIDA MINORU ,  NAKAYAMA KIWA ,  WAGATA HIROTAKA

IPC: G01R35/00 ,  G01R27/28

Abstract: PROBLEM TO BE SOLVED: To provide a network analyzer in which an error is hard to generate even when an ideal terminating resistance does not exist and which measures DUTs in a plurality of ports. SOLUTION: The network analyzer is provided with a power-supply port 8a which is connected to one measuring port 40a of an object 40 to be measured and to which a power supply 9 is connected. The network analyzer is provided with terminating ports 8b to 8n which are connected to ports 40b to 40n, of the object 40 to be measured, other than the measuring port 8a so as to be grounded via grounding resistances 6a, 6b to 6n. The network analyzer is provided with circuit-parameter measuring parts 20a, 20b to 20n which are connected respectively to the port 8a and the ports 8b to 8n and which measure an S parameter regarding the ports 40a, 40b to 40n. The parts 20a, 20b to 20n which are connected to the ports 8b to 8n measure the S parameter regarding the ports 8b to 8n. Thereby, even when the S parameter regarding the ports 8b to 8n cannot be regarded as 0, the S parameter of the object 40, to be measured, comprising a plurality of ports can be measured.

公开(公告)号：JP2001007672A

公开(公告)日：2001-01-12

申请号：JP17901499

申请日：1999-06-24

Applicant: ADVANTEST CORP

Inventor： IIDA MINORU

IPC: H01P1/15 ,  H01P1/22 ,  H03H7/25

Abstract: PROBLEM TO BE SOLVED: To realize high switching speed, long service life and a broadband by providing a correction attenuator with a reverse characteristic where attenuation is decreased as frequency becomes higher on the side of giving a step attenuation and using two electronic switches to select a through-side path. SOLUTION: Attenuators(ATT) 20, 30 that vary attenuation from 0 to 60 dB in steps of 20 dB provide an attenuation of 20 dB. A correction attenuator(CATT) 10 has an inverse frequency characteristic, that an attenuation at a frequency of 8 GHz is decreased by 2 dB with respect to 20 dB attenuation. Each attenuation at 8 GHz is selected to be 1.5 dB/8 GHz for the selection of switches SW1-SW6. Thus, the difference of the attenuation between the 6 switches and the 2 switches in operation is 6 dB/8 GHz. In order to set an attenuation of 40 dB, the switches SW1-SW3, the SW6 are thrown to a position of (b) and the switches SW4, SW5 are thrown to a position of (a). Attenuation error of 7 dB/8 GHz is caused with respect to a reference attenuation of 40 dB.