KR20090005652A - Rf measurement system using contact type rf zig and method thereof - Google Patents

Rf measurement system using contact type rf zig and method thereof Download PDF

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Publication number
KR20090005652A
KR20090005652A KR1020070068849A KR20070068849A KR20090005652A KR 20090005652 A KR20090005652 A KR 20090005652A KR 1020070068849 A KR1020070068849 A KR 1020070068849A KR 20070068849 A KR20070068849 A KR 20070068849A KR 20090005652 A KR20090005652 A KR 20090005652A
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KR
South Korea
Prior art keywords
terminal
measuring
signal
jig
mobile communication
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KR1020070068849A
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Korean (ko)
Inventor
빈영부
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삼성전자주식회사
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Priority to KR1020070068849A priority Critical patent/KR20090005652A/en
Publication of KR20090005652A publication Critical patent/KR20090005652A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/24—Arrangements for testing

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A system for measuring the RF performance by using a low-priced contact-type jig for RF measurement is provided to reduce the cost of a mobile communication terminal. A jig for RF measurement including a contact-type port is connected with a contact-type port of a mobile communication terminal to measure the RF performance of the mobile terminal(S301). One of ports of the mobile terminal senses the connection between the jig and the mobile terminal, and then transmits the sensed signal to a central processing unit(S302). The central processing unit receiving the sensed signal applies a switching control signal for changing the operation of an SPDT switch to the SPDT switch(S303). The SPDT switch changes the connection between an RF processing unit and an antenna into the connection between the RF processing unit and the jig(S304). The central processing unit performs the RF measurement(S305).

Description

RF Measurement System Using Contact Type RF Zig and Method Thereof}

The present invention relates to an RF performance measurement system and method using a jig for contact type RF measurement.

RF (Radio Frequency) design refers to a circuit design that can carry electromagnetic signals. Since the introduction of Ultra High Frequency (UHF) -TV, frequencies above 300 MHz have been used for broadcasting since the 1960s. From then on, the number of contents, frequency, and bandwidth of communication applications began to increase dramatically. Market demands for higher bandwidth and higher performance end products are driving product designs to increase in frequency range and complexity.

Engineers are integrating RF circuits with analog and digital nanometer circuits. Digital circuits, on the other hand, behave like microwave circuits due to their gigabit data rates. In complex wireless communication standards such as Wireless Fidelity (WiFi) 802.11a / b / g, Ultra Wideband (UWB), and Bluetooth, circuit designers must evaluate the design's impact on overall system performance.

In general, the RF connector for measuring the RF performance of the mobile communication terminal is currently used. It is mounted in series in the RF transmission / reception path through the antenna, and is normally connected to the antenna path, and when the connector is inserted, it is connected to the RF cable connected to the equipment and used for basic RF performance measurement.

1 is a view showing the configuration of an RF performance measurement system for measuring the RF performance of a general mobile communication terminal.

As shown in FIG. 1, a general RF performance measuring system may be configured with an RF measuring device 1 including an equipment-side RF connector 2 and a mobile communication terminal 3. The mobile communication terminal 3 may include an antenna 4, an RF processor 6, a baseband processor 7, a central processor 8, and the like.

Here, the mobile communication terminal 3 is provided with a terminal side RF connector 5 for connection with the equipment side RF connector 2 of the RF measuring equipment 1.

The user connects the equipment side RF connector 2 to the terminal side RF connector 5 of the mobile communication terminal 3 to measure the RF performance of the mobile communication terminal 3. As such, when the connection between the equipment-side RF connector 2 and the terminal-side RF connector 5 is made, the connection between the RF processing unit 6 and the antenna 4 of the mobile communication terminal 3 is broken, and the RF processing unit 6 And the connection between the RF measuring equipment 1 is established.

After such a connection is established, the RF measuring equipment 1 transmits predetermined data for RF measurement to the mobile communication terminal via the RF connectors 2 and 5, the RF processing unit 6, and the baseband processing unit 7. It can transmit / receive with the central processing unit 8 of 3). Through the transmission and reception of such data and the error measurement accordingly, the RF measuring equipment 1 measures the RF performance of the mobile communication terminal 3.

However, as shown in FIG. 1, the RF connectors 2 and 5 used in the general RF measurement system are used only for development or testing of a mobile communication terminal. The RF connectors 2 and 5, which are not required due to such a high demand, are expensive and are a factor for increasing the price of the mobile communication terminal 3.

In addition, since the terminal-side RF connector 5 embedded in the mobile communication terminal 3 is very large in size, there is a problem that it is counter to the trend toward miniaturization and slimming of the mobile communication terminal 3 design.

Therefore, the present invention is to solve the problems according to the prior art, RF performance of the terminal using only the measurement terminal and the measuring jig of the PCB in the state without the RF connector necessary only for the development and measurement of the mobile communication terminal It is intended to provide a method of providing a system and a method for measuring the same.

According to an aspect of the present invention, a mobile communication terminal for RF measurement includes a plurality of contact type terminals and contact types for connection sensing with a radio frequency (Jig) measurement jig and RF signal transmission and reception through the RF measurement jig. When the terminal senses the connection between the mobile communication terminal and the jig for measuring the RF, RF measurement when the switching control signal is applied from the central processing unit and the central processing unit that outputs the switching control signal to the RF single pole double throw (SPDT) switch It includes an RF SPDT switch for switching the RF signal transmitted from the jig through the contact type terminal to the RF processing unit.

In this case, the plurality of contact type terminals may include a first terminal for transmitting and receiving an RF signal through the RF measuring jig, a second terminal that is ground, and a third terminal for sensing connection with the jig for measuring RF. In addition, a fourth terminal for receiving an analog signal according to the level of the RF signal transmitted by the RF measuring equipment may be further included.

The central processing unit of the mobile communication terminal checks the level of the RF signal transmitted by the RF measuring equipment using the analog signal received through the fourth terminal, measures the level of the RF signal transmitted through the first terminal, RF loss (Loss) can be calculated by comparing the two RF signal levels. The calculated RF loss value is transmitted to the RF measuring equipment to compensate for the RF signal.

According to another aspect of the present invention, the jig for measuring an RF receives an RF measurement device, an RF connector for transmitting and receiving an RF signal, and receives a level value of an RF signal transmitted by the RF measuring device, and converts the signal into an analog signal. (Digital to Analog Converter) and a plurality of contact type terminals for transmitting and receiving RF signals with the mobile communication terminal.

In this case, the DAC unit receives the level value of the RF signal transmitted from the RF measuring device as a PDM (Pulse Density Modulation) signal and converts it into an analog signal.

The RF measurement system according to another aspect of the present invention receives an RF measurement device for transmitting an RF signal for RF measurement of the mobile communication terminal, an RF signal transmitted by the RF measurement device to the RF connector, and through the contact type terminal It may include a mobile communication terminal for receiving the output RF measuring jig and the RF signal output by the RF measuring jig to the contact type terminal, and measuring the RF performance using the received RF signal.

Finally, RF measuring method of the mobile communication terminal according to another aspect of the present invention is a step of the mobile communication terminal is connected through the RF measuring jig and the contact type terminal, the jig for RF measurement and movement through one of the contact type terminal The central processing unit that senses the connection of the communication terminal applies a switching control signal to the RF SPDT switch, and the RF SPDT switch receiving the switching control signal establishes a connection between the RF processing unit and the RF measuring jig of the mobile communication terminal. And performing an RF measurement by transmitting and receiving an RF signal through a contact-type terminal with the RF measuring equipment.

In this case, the plurality of contact type terminals may include a first terminal for transmitting / receiving an RF signal through a jig for measuring an RF, a second terminal that is ground, and a third terminal for sensing connection with the jig for measuring an RF. In addition, a fourth terminal for receiving an analog signal according to the level of the RF signal transmitted by the RF measuring equipment may be further included.

The mobile communication terminal checks the level of the RF signal transmitted by the RF measuring equipment using the analog signal received through the fourth terminal, and measures the level of the RF signal transmitted through the first terminal. RF loss (Loss) can be calculated by comparing the levels of the RF signal.

Thereafter, the mobile communication terminal transmits the calculated RF loss value to the RF measurement equipment, and the RF measurement equipment may perform RF measurement by transmitting an RF signal compensated for the RF loss value.

As described above, according to the RF performance measuring system and method using the contact type RF measuring jig according to the present invention, it is possible to measure the RF by using a low-cost contact type terminal compared to the expensive RF connector used only for measurement. The unit cost of the mobile communication terminal can be lowered, and the contact type terminal has a smaller size than the RF connector, thereby ensuring a space for mounting parts in the mobile communication terminal, thereby miniaturizing and slimming the mobile communication terminal.

EMBODIMENT OF THE INVENTION Hereinafter, the RF performance measuring system and method using the contact type RF measuring jig according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of an RF performance measurement system according to an embodiment of the present invention.

As shown in FIG. 2, the RF performance measuring system includes an RF measuring equipment 1 including an equipment-side RF connector, an RF measuring jig 10, and a mobile communication terminal 20.

Among the above components, the RF measuring equipment 1 and the equipment-side RF connector have almost the same configuration and function as the general RF measuring system, and thus detailed description thereof will be omitted.

The jig 10 for RF measurement may include a jig side RF connector 11, a digital to analog converter (DAC) unit 12, and a contact type terminal 13. It can be seen that the RF measuring jig 10 of the embodiment of FIG. 2 has four jig side contact type terminals 13.

Meanwhile, the mobile communication terminal 20 includes an antenna 25, a single pole double throw (SPDT) switch 26 for RF, an RF processor 27, a baseband processor 28, a central processor 29, and a terminal side contact. Type terminals 21, 22, 23, 24, and the like.

The present invention does not mount the existing RF connector (5 of FIG. 1) on the mobile communication terminal 20, and a plurality of contact type terminals 21, on the RF SPDT switch 26 and a printed circuit board (PCB). It is characterized by the configuration using 22, 23, 24). In addition, an RF measuring jig 10 having an RF connector 11 and a contact terminal 13 is used to connect the RF measuring device 1 and the mobile communication terminal 20.

First, the structure of the contact type terminals 21, 22, 23, and 24 included in the RF measuring jig 10 and the mobile communication terminal 20 will be described. In the embodiment of FIG. 2, it is assumed that there are four contact type terminals.

The first terminal 21 of the contact terminals is used as a connection path for transmitting and receiving RF signals between the RF measuring equipment 1 and the mobile communication terminal 20, and the second terminal 22 of the contact terminals is grounded. Used as (Ground) terminal.

The third contact type terminal 23 is a terminal used for connection sensing between the jig 10 for measuring an RF and the mobile communication terminal 20. Finally, the 4th contact type terminal 24 is a terminal for transmitting the transmission signal level value of the RF measuring equipment 1 for measuring the RF loss value according to the connection of the contact type terminal.

When the jig 10 for RF measurement is contacted with the terminal side contact terminals 21, 22, 23, and 24 of the mobile communication terminal 20, the third contact type terminal 23 detects the connection. The third contact type terminal 23 detecting the connection transmits a sensing signal to the A terminal of the central processing unit 29 of the mobile communication terminal 20.

The central processing unit 29 transmits the switching control signal to the RF SPDT switch 26 through the C terminal when the sensing signal is input through the A terminal.

The RF SPDT switch 26 serves to connect the antenna 25 and the RF processor 27 in a normal case, that is, when the switching control signal is not received from the central processor 29. Of course, through this connection, the mobile communication terminal 20 provides a general call service to the user.

However, when the switching control signal is applied from the central processing unit 29, the RF SPDT switch 26 performs a switching operation for connecting the contact type terminal 21 and the RF processing unit 27 instead of the antenna 20. do.

Through this switching operation, the RF signal transmitted by the RF measuring apparatus 1 may be transferred to the RF processor 27 of the mobile communication terminal 20. Thereafter, the RF signal transmitted by the RF measuring apparatus 1 is transmitted to the central processing unit 29 through the signal processing of the RF processing unit 27 and the baseband processing unit 28.

In addition, the process transmitted by the central processing unit 29 of the mobile communication terminal 20 to the RF measurement equipment 1 corresponds to an inverse process of the above-described process. That is, the data generated by the central processing unit 29 is modulated into an RF signal by the signal processing of the baseband processing unit 28 and the RF processing unit 27. The modulated RF signal is transmitted to the RF measuring equipment 1 through the contact type terminal 21 and the jig 10 for measuring RF and the jig-side RF connector 11.

The mobile communication terminal according to the present invention uses the contact type terminals 21, 22, 23, and 24, rather than the commonly used RF connector. Loss of RF signal occurs while the RF signal is transferred from the RF measuring jig 10 to the RF processing unit 27 via the contact type terminal 21 and the SPDT switch 26 for RF. do. The present invention further proposes a mechanism for compensating for the RF loss thus generated for accurate RF measurement.

The RF measuring jig 10 first receives a PDM (Pulse Density Modulation) signal including a level value of an RF signal transmitted from the RF measuring apparatus 1. The PDM signal transmitted as described above corresponds to a digital signal, and the DAC unit 12 of the jig 10 for RF measurement converts the PDM signal into an analog signal. Of course, those skilled in the art can readily think of using RF signals as well as other digital signals to convey RF transmit signal level values.

After that, when the jig 10 for measuring RF and the mobile communication terminal 20 are connected, the analog signal RF signal level value converted by the DAC 12 is transferred to the mobile communication terminal 24 through the contact type terminal 24. 20 to central processing unit 29. In this case, the RF signal level value transmitted from the RF measuring jig 10 through the contact type terminal 24 is transmitted as an analog signal rather than an RF signal.

The central processing unit 29 may check the level value of the RF signal being transmitted by the RF measuring equipment 1 by analog to digital converting the analog signal level value input to the B terminal. . Meanwhile, as described above, the central processing unit 29 may measure the level of the RF signal transmitted from the first contact type terminal 21.

The central processing unit 29 considers the difference between the level value of the RF signal digitally checked and the level value of the RF signal transmitted from the first contact-type terminal 21 as RF loss.

The central processing unit 29 reports this RF loss value to the RF measuring equipment 1. In this case, as a method of reporting the RF loss value, a method of using an RF signal through the first contact type terminal 21 may be considered. Now, the RF measuring apparatus 1 transmits an RF signal that compensates for the RF loss value reported from the mobile communication terminal 20 to the mobile communication terminal 20, thereby enabling accurate RF signal measurement that compensates for the RF loss. Done.

Measurement of the RF signal is possible both in the mobile communication terminal 20 or the RF measurement equipment (1), etc., it is apparent to those skilled in the art that not only the strength of the RF signal but also other RF parameters such as BER (Bit Error Rate).

3 is a diagram illustrating a method of changing an RF path according to sensing a contact of an RF measuring jig according to another exemplary embodiment of the present invention.

First, in order to measure the RF performance of the mobile communication terminal 20, an RF measuring jig 10 including a contact type terminal 13 is connected to the contact type terminals 21 and 22 of the mobile communication terminal 20. 23, 24) (S301). In this case, one of the terminals of the mobile communication terminal 20 (contact terminal No. 3 in the embodiment of FIG. 2) senses the connection between the jig 10 for RF measurement and the mobile communication terminal 20 to the central processing unit. The sensing signal is transmitted to the apparatus 29 at step S302.

When receiving the sensing signal, the central processing unit 29 applies a switching control signal for changing the operation of the RF SPDT switch 26 to the RF SPDT switch 26 (S303). The RF SPDT switch 26 receiving the switching control signal performs a switching operation of changing the connection between the RF processor 27 and the antenna 25 to a connection between the RF processor 27 and the RF measuring jig 10. (S304).

When the RF path change is made as described above, the RF signal transmitted from the RF measuring equipment 1 can be transmitted to the central processing unit 29 of the mobile communication terminal 20, thereby enabling RF measurement ( S305).

FIG. 4 is a diagram illustrating a method of compensating for RF loss according to an RF path change of the embodiment of FIG. 3.

RF signal transmission via a contact type terminal causes a lot of losses depending on the contact type, and the error is also large. Ignoring such RF loss and performing RF measurement of the mobile communication terminal 20 may result in an incorrect RF measurement result. Therefore, it is desirable to additionally perform the RF loss compensation procedure according to FIG.

First, when the connection between the RF measurement jig 10 and the mobile communication terminal 20 is made, the RF measurement equipment 1 transmits an RF signal to the RF measurement jig 10 (S401). The RF signal is transmitted to the mobile communication terminal 20 via one of the contact terminals connecting the RF measurement jig 10 and the mobile communication terminal 20 (in the embodiment of FIG. 2, the first contact type terminal 21). In step S402). The mobile communication terminal 20 measures the level of the RF signal transmitted in step S402 (S403).

Simultaneously with the process of S401, the RF measuring apparatus 1 transmits the PDM signal including the RF signal level value to the RF measuring jig 10 (S404). The RF measuring jig 10 converts the PDM signal received in step S404 into an analog voltage value (S405). The converted analog voltage value is a mobile communication terminal via one of the contact terminals connecting the RF measuring jig 10 and the mobile communication terminal 20 (contact type terminal 24 in the embodiment of FIG. 2). It is delivered to 20 (S406). The mobile communication terminal 20 checks the level of the signal transmitted by the RF measuring equipment 1 by converting the analog voltage value into a digital format (S407).

The mobile communication terminal 20 having completed the processes of S403 and S407 compares the RF signal level value measured in S403 with the RF transmission signal level value digitally converted and checked (S408). Through such a comparison process, the RF loss generated by using the contact type terminal for the connection between the RF measuring jig 10 and the mobile communication terminal 20 may be calculated (S409). Now, the RF measuring equipment 1 transmits an RF signal compensated for the RF loss calculated in S409 to the mobile communication terminal 20 to perform accurate RF measurement (S410).

Although the present invention has been described in detail through the representative embodiments, those skilled in the art to which the present invention pertains can make various modifications without departing from the scope of the present invention. I will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

1 is a view showing the configuration of an RF performance measurement system for measuring the RF performance of a typical mobile communication terminal.

2 is a block diagram of an RF performance measurement system according to an embodiment of the present invention.

3 is a view illustrating a method of changing an RF path according to sensing a contact of an RF measuring jig according to another exemplary embodiment of the present invention.

FIG. 4 is a diagram illustrating a method of compensating for RF loss due to an RF path change of the embodiment of FIG. 3. FIG.

<Description of the symbols for the main parts of the drawings>

10: jig for RF measurement 11: jig side RF connector

12: DAC part 13: jig side contact type terminal

20: mobile communication terminal 21 ~ 24: terminal side contact type terminal

25 antenna 26 RF SPDT switch

27: RF processing unit 28: baseband processing unit

29: central processing unit

Claims (13)

In the mobile communication terminal, A plurality of contact type terminals for connection sensing with a radio frequency (RF) measurement jig and for transmitting and receiving an RF signal through the RF measurement jig; A central processing unit for outputting a switching control signal to a single pole double throw (SPDT) switch for RF when the terminal of the contact type senses a connection between a mobile communication terminal and a jig for measuring an RF; And And an RF SPDT switch for switching an RF signal transmitted from the RF measuring jig through the contact type terminal to an RF processing unit when a switching control signal is applied from the central processing unit. The method of claim 1, The plurality of contact type terminals, A first terminal for transmitting and receiving an RF signal through the RF measuring jig; A second terminal that is ground; And And a third terminal for sensing a connection with the jig for measuring RF. Mobile communication terminal. The method of claim 2, The plurality of contact type terminals, And a fourth terminal for receiving an analog signal according to the level of the RF signal transmitted by the RF measuring equipment. The method of claim 1, The central processing unit, Check the level of the RF signal transmitted by the RF measurement equipment using the analog signal received through the fourth terminal of the plurality of contact type terminals, and is transmitted through the first terminal of the plurality of contact type terminals A mobile communication terminal for measuring RF level and calculating RF loss by comparing the two RF signal levels. The method of claim 4, wherein The central processing unit, A mobile communication terminal for transmitting the RF loss value to the RF measurement equipment. In the jig for RF measurement, RF connector for transmitting and receiving RF signal and RF measurement equipment; A digital to analog converter (DAC) unit for receiving a level value of an RF signal transmitted by the RF measuring device and converting the level value into an analog signal; And An RF measurement jig including a plurality of contact type terminals for transmitting and receiving RF signals with a mobile communication terminal. The method of claim 6, The DAC unit is a jig for RF measurement, characterized in that for receiving the level value of the RF signal transmitted from the RF measurement equipment as a PDM (Pulse Density Modulation) signal. In the RF measurement system, RF measuring equipment for transmitting an RF signal for RF measurement of the mobile communication terminal; An RF measuring jig for receiving an RF signal transmitted by the RF measuring device through an RF connector and outputting the same through a contact terminal; And RF measuring system including a mobile communication terminal for receiving the RF signal output from the RF measuring jig to the contact type terminal, and measuring the RF performance using the received RF signal. In the RF measurement method of the mobile communication terminal, A mobile communication terminal connected to the jig for measuring an RF through a contact terminal; Applying a switching control signal to an RF SPDT switch by a central processing unit that senses a connection between a jig for measuring an RF and a mobile communication terminal through one of the contact terminals; The RF SPDT switch receiving the switching control signal establishes a connection between the RF processing unit of the mobile communication terminal and the RF measuring jig; And And performing RF measurement by transmitting and receiving an RF signal through an RF measuring device and a terminal of a contact type. The method of claim 9, The plurality of contact type terminals, A first terminal for transmitting and receiving an RF signal through the RF measuring jig; A second terminal that is ground; And And a third terminal for sensing a connection with the jig for measuring the RF. The method of claim 10, The plurality of contact type terminals, And a fourth terminal for receiving an analog signal according to the level of the RF signal transmitted by the RF measuring equipment. The method of claim 11, Checking, by the mobile communication terminal, the level of the RF signal transmitted by the RF measuring equipment using the analog signal received through the fourth terminal; Measuring a level of an RF signal transmitted through the first terminal; And calculating an RF loss by comparing the levels of the two RF signals. The method of claim 12, Transmitting, by the mobile communication terminal, the RF loss value to the RF measurement equipment; Wow The RF measuring equipment further comprises the step of transmitting an RF signal compensated for the RF loss value.
KR1020070068849A 2007-07-09 2007-07-09 Rf measurement system using contact type rf zig and method thereof KR20090005652A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101580884B1 (en) 2015-02-11 2015-12-29 주식회사 이노와이어리스 antenna cable connector assembly and the jig therefor
CN113630168A (en) * 2021-09-17 2021-11-09 广东博智林机器人有限公司 Test method and system of wireless test equipment and wireless test equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101580884B1 (en) 2015-02-11 2015-12-29 주식회사 이노와이어리스 antenna cable connector assembly and the jig therefor
CN113630168A (en) * 2021-09-17 2021-11-09 广东博智林机器人有限公司 Test method and system of wireless test equipment and wireless test equipment

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