Measuring Apparatus

• US 20120194206A1
• Filed: 01/28/2011
• Published: 08/02/2012
• Est. Priority Date: 01/28/2011
• Status: Abandoned Application

• Current Assignee: Advantest Corporation
• Original Assignee: Advantest Corporation
• Inventors: NAGASAKA, Takeshi, SCHAUB, Keith, Lum, Anthony
• Application Number:
  US13/016,048
• Publication Number:
  US 20120194206A1
• Time in Patent Office: Days
• US Class Current: 324/750.01
• CPC Class Codes: G01R 29/26 Measuring noise figure; Measuring signal-to-noise ratio
• CPC Class Codes: G01R 31/2822 of microwave or radiofrequency circuits of attenuation, gain, e.g. using network analyzers G01R27/28

Abstract

A test for connecting a transmitter and a receiver of a device under test with each other is carried out by a measurement device. The measurement device 100 connected to a device under test 200 including a transmission unit 202 and a reception unit 204 includes an input port 102 connected to the transmission unit 202, an output port 104 connected to the reception unit 204, signal output units 132, 134 that output an output signal, electric power measurement units 145, 155 that measure the electric power of an input signal, a connection unit (coupler 110, switches 120-128) that can connect the input port to the output port 104 and/or the electric power measurement units 145, 155, and can connect the output port 104 to the input port 102 and/or the signal output units 132, 134, and electric power adjustment units 183, 185 that adjust the electric power of an output port signal output from the output port 104 if the input port 102 and the output port 104 are connected with each other.

Claims

1. A measurement device connected to a device under test including a transmission unit and a reception unit,

comprising:

an input port connected to the transmission unit;

an output port connected to the reception unit;

a signal output unit that outputs an output signal.

an electric power measurement unit that measures the electric power of an input signal;

a connection unit that can connect the input port to the output port and/or the electric power measurement unit, and can connect the output port to the input port and/or the signal output unit; and

an electric power adjustment unit that adjusts the electric power of an output port signal output from the output port if the input port and the output port are connected to each other.

2. The measurement device according to claim 1, wherein:

the connection unit connects the input port and the electric power measurement unit, then connects the input port and the output port with each other; and

the electric power adjustment unit adjusts the electric power of the output port signal according to a measurement result by the electric power measurement unit if the input port and the output port are connected with each other.

3. The measurement device according to claim 2, wherein the connection unit connects the input port and the output port, and simultaneously connects the output port and the signal output unit.

4. The measurement device according to claim 3, wherein:

the output port signal includes an output signal component which is the output signal, and has reached the output port, and an input port signal component which is an input port signal, is input from the input port, and has reached the output port if the input port and the output port are connected with each other; and

the electric power adjustment unit adjusts a ratio between the electric power of the output signal component and the electric power of the input port signal component contained in the output port signal if the input port and the output port are connected with each other.

5. The measurement device according to claim 1, wherein:

the connection unit connects the input port and the output port, and simultaneously connects the output port and the signal output unit;

the output port signal includes an output signal component which is the output signal and has reached the output port; and

the electric power adjustment unit adjusts the electric power of the output signal component.

6. The measurement device according to claim 1, wherein the output signal is a continuous wave signal or a noise.

7. The measurement device according to claim 1, wherein the input port and the output port are mutually replaceable.

8. The measurement device according to claim 2, wherein the output signal is a continuous wave signal or a noise.

9. The measurement device according to claim 3, wherein the output signal is a continuous wave signal or a noise.

10. The measurement device according to claim 4, wherein the output signal is a continuous wave signal or a noise.

11. The measurement device according to claim 5, wherein the output signal is a continuous wave signal or a noise.

12. The measurement device according to claim 2, wherein the input port and the output port are mutually replaceable.

13. The measurement device according to claim 3, wherein the input port and the output port are mutually replaceable.

14. The measurement device according to claim 4, wherein the input port and the output port are mutually replaceable.

15. The measurement device according to claim 5, wherein the input port and the output port are mutually replaceable.