KR101760735B1 - Apparatus and method for antenna matching in portable terminal - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal, and more particularly, to an apparatus and method for achieving antenna matching in consideration of a body effect of a user and a state of a portable terminal.
A method for antenna matching in a portable terminal according to the present invention is a method for matching an antenna based on at least one of whether or not to connect to an external device, whether to use a receiver, to use a speaker, to receive a sensing signal from a proximity sensor, Determining a state of the terminal; Determining an optimal TMN (Tunable Matching Network) circuit adjustment value corresponding to the determined state of the portable terminal; And performing antenna matching according to the determined optimal TMN circuit adjustment value.

Description

[0001] APPARATUS AND METHOD FOR ANTENNA MATCHING IN PORTABLE TERMINAL [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal, and more particularly, to an apparatus and method for achieving antenna matching in consideration of a body effect of a user and a state of a portable terminal.

The transceiver for wireless communication includes an antenna, and mismatching between the antenna and the transmission circuit causes performance degradation of the transceiver. In order to solve such an antenna mismatch, a conventional portable terminal uses an FMN (Fixed Matching Network) method using a fixed LC (L: Inductor, C: Capacitor) circuit. When the FMN scheme is used, much time is required in developing a terminal to find an optimal LC circuit element value for antenna matching. Furthermore, since the LC circuit element value can not be changed according to the electric field, there is a problem that a radio frequency (RF) performance problem, particularly a weak electric field, frequently causes performance problems such as call drop and mute There are disadvantages.

 A technique designed to compensate for the disadvantages of the FMN scheme is a TMN (Tunable Matching Network) scheme. The TMN scheme uses a variable LC circuit instead of a fixed LC circuit.

However, in applying the TMN scheme, consideration is not given to factors affecting antenna radiation performance according to a user's use of a portable terminal in a real environment. Since the antenna radiation performance is highly influenced by the environmental interface such as the body effect of the user and the state of the portable terminal, optimal antenna matching determined in consideration of various environments should be performed.

Therefore, in applying the TMN scheme, an alternative is needed for tuning the TMN circuit (i.e., the LC circuit) in consideration of the above environment interface.

It is an object of the present invention to provide an apparatus and method for antenna matching in a portable terminal.

It is another object of the present invention to provide an apparatus and method for achieving antenna matching in consideration of a human body influence of a user and a state of a portable terminal in a portable terminal.

It is another object of the present invention to provide an apparatus and method for determining an optimal TMN circuit adjustment value according to a human body effect of a user and a state of a portable terminal in a portable terminal.

It is a further object of the present invention to provide a portable terminal capable of providing various functions such as a band, a channel, a mode of a portable terminal (for example, a call mode, an idle mode), a slide state of a portable terminal , Slide-down), a reference that stores the optimal TMN circuit adjustment values according to the position of the mobile terminal (e.g., position in the user's hand, position in the user's head, And an apparatus and method for determining an optimal TMN circuit adjustment value based on a look-up table.

It is another object of the present invention to provide a portable terminal which is capable of displaying a slide state of a portable terminal such as a slide up or slide down mode, a mode of a portable terminal such as a call mode and an idle mode, The position of the portable terminal (for example, the position of the portable terminal, for example, the position of the hand in the hand of the user, such as whether the portable terminal is used, the use of a loudspeaker, the connection of an ear jack, (Head + Hand) in the head part of the user, and Free (Free) in the place where the user is not affected by the human body).

Another object of the present invention is to provide an apparatus and method for determining a state of a terminal as Free, Hand, Head + Hand, or USB Optimization according to whether a call is made, whether the proximity sensor is operated, .

According to another aspect of the present invention, there is provided a method for antenna matching in a portable terminal, including: determining a state of the portable terminal; Determining an optimal TMN (Tunable Matching Network) circuit adjustment value corresponding to the determined state of the portable terminal; And performing antenna matching according to the determined optimal TMN circuit adjustment value.

The state of the portable terminal may include a hand state, a head and a hand position based on at least one of whether or not the portable terminal is connected to an external device, whether a receiver is used, whether a speaker is used, hand state, a USB optimization state, and a free state. The hand state is a state in which a terminal is located in a hand of a user while a hand is in a call mode, a terminal is located in a head of a user while the head and hand state is in a call mode, The terminal is in an idle mode, and the USB optimized state is in a state of being connected to an external device through a USB terminal during a call mode.

Determining the state of the portable terminal as the free state if the portable terminal is in an idle mode; Determining a state of the portable terminal as the USB-optimized state when an external device is connected through the USB terminal during a call mode; Determining a state of the portable terminal as the hand state when an external device is not connected through the USB terminal and the proximity signal is not input from the proximity sensor during a communication mode; Determining a state of the portable terminal as the head-and-hand state when an external device is not connected through the USB terminal during a call mode and a proximity signal is input from the proximity sensor; And determining a state of the terminal as a state corresponding to the state determination signal among the hand state, the head and hand state, the free state, and the USB optimization state when the state determination signal is input while the terminal is in the test mode .

Determining the state of the portable terminal as the free state if the portable terminal is in an idle mode; Determining a state of the portable terminal as the head-and-hand state when the portable terminal is in a call mode and the receiver is used; And determining a state of the portable terminal as the hand state when the portable terminal is in a call mode and the speaker is used.

An apparatus for antenna matching in a portable terminal of the present invention includes a controller for determining a state of the portable terminal and determining an optimal TMN circuit adjustment value corresponding to the determined state; And a TMN unit for performing antenna matching using the optimal TMN circuit adjustment value received from the control unit. In the above-described configuration, the controller performs the step of determining the state.

The present invention has an advantage in that an optimal antenna matching can be achieved by determining an optimal TMN circuit adjustment value according to the human body effect of the user and the state of the portable terminal in the portable terminal. Furthermore, it is possible to improve RF performance in various electric field situations, minimize reflected power, gain gain in terms of transmit power, minimize current consumption, and prolong battery life. In addition, there is an advantage that the transmission / reception ratio and the mute rate can be improved.

1 is a flowchart illustrating an antenna matching method in a portable terminal according to an embodiment of the present invention.
FIG. 2 is a block diagram illustrating a configuration of a portable terminal according to an exemplary embodiment of the present invention. Referring to FIG.
3 is an exemplary diagram illustrating a method for setting an antenna matching point in a call mode in a portable terminal according to an embodiment of the present invention.
FIG. 4 is a flowchart for explaining an embodiment of the UE status determination process described with reference to FIG.
FIG. 5 is a block diagram illustrating a configuration of a portable terminal according to another embodiment of the present invention. Referring to FIG.

Hereinafter, an apparatus and method for antenna matching in a portable terminal according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Before describing the present invention, it is to be understood that the terminology used herein is for the purpose of description and should not be interpreted to limit the scope of the present invention. Accordingly, the specification and drawings are to be regarded in an illustrative rather than a restrictive sense only and not for purposes of limitation, and that various equivalents and modifications may be substituted for them at the time of filing of the present application .

Hereinafter, a description will be made of a technique for achieving antenna matching in consideration of a human body effect of a user and a state of a portable terminal in a portable terminal.

Particularly, the portable terminal according to the present invention can be applied to a portable terminal such as a band, a channel, a mode of a portable terminal (for example, a call mode, an idle mode), a slide state of a portable terminal A reference table storing optimum TMN circuit adjustment values according to the position of the portable terminal (e.g., the position of the user's hand, the position of the user's head, (Look Up Table). In constructing the reference table, the slide state is not taken into consideration when the terminal is not a slide type but, for example, a bar type smartphone.

Here, there are a plurality of bands used in the corresponding service network for each service network, a plurality of channels exist for each band, and a variation in the radiated performance between adjacent channels is small. Therefore, in constructing the reference table, it is inefficient to set all the optimal TMN circuit adjustment values for all the channels of the corresponding band for each service network band differently considering the memory amount of the portable terminal.

Accordingly, the present invention proposes a method of classifying all channels of a corresponding band into a predetermined number of groups for each service network band, and setting an optimal TMN circuit adjustment value for each of the classified groups. Here, the number of channel groups per service network band can be determined in consideration of the bandwidth of each band.

For example, the number of channel groups per band supported in GSM and WCDMA networks can be determined as shown in Table 1 below.

Herein, for example, the reference table for the PCS 1900 band is an optimal TMN circuit adjustment value according to the band, the channel, the mode of the portable terminal, the slide state of the portable terminal, and the position of the portable terminal, Lt; / RTI >

Here, in the case of the mode parameter, Call and Idle mean a call mode and an idle mode, respectively. In the case of the slide state parameter, S / U and S / D mean slide-up and slide-down respectively. In the case of the position parameter, Free indicates that the terminal is located where there is no human influence, Hand indicates that the terminal is positioned on the user's hand, and H + H (Head + Hand) Which means that the terminal is located in the area.

The position of the portable terminal depends on the slide state, the mode of the portable terminal, whether or not the receiver is used, whether the loudspeaker is used, whether the ear jack is connected, and whether the Bluetooth audio is connected or not Can be determined as shown in Table 3 below.

Here, in the case of the mode parameter, 'O' means a communication mode and 'X' means an idle mode. For example, Case 9 in the slide-up state means that the terminal is in the call mode, the receiver is used, the loudspeaker is not used, and the earphone jack and the Bluetooth audio are not connected. Therefore, it can be defined that the position of the portable terminal is S / U H + H, that is, the terminal is located at the head of the user in the slide-up state. Also, Case 13 in the slide-up state means that the terminal is in the call mode, the loudspeaker is used, the receiver is not used, and the earphone jack and the Bluetooth audio are not connected. Therefore, it can be defined that the position of the portable terminal is located in the S / U Hand, that is, the user's hand in the slide-up state. In addition, if the proximity sensor and the acceleration sensor are implemented in the portable terminal, it is possible to define various definitions in defining the position of the portable terminal.

1 is a flowchart illustrating an antenna matching method in a portable terminal according to an embodiment of the present invention.

Referring to FIG. 1, in step 101, the terminal checks whether the power is turned on.

In step 101, when the power-on is detected, the portable terminal proceeds to step 103 to extract the reference table from the memory. Here, the reference table can be configured as shown in Table 2, for example. The portable terminal classifies all the channels of the corresponding band into a predetermined number of groups for each service network band, forms a reference table for each of the classified groups, and stores the reference table in advance in the memory.

In step 105, the portable terminal searches for a service network. In step 107, the portable terminal identifies a band and a channel used by the portable terminal in the searched service network.

Then, the portable terminal determines the state of the portable terminal itself in step 109. That is, the portable terminal determines the mode of the portable terminal, the slide state of the portable terminal, and the position of the portable terminal. The portable terminal can determine the position of the portable terminal based on the slide state of the portable terminal, the mode of the portable terminal, whether the receiver is used, whether the loudspeaker is used, whether the ear jack is connected, and whether the Bluetooth audio is connected have.

Then, in step 111, the portable terminal determines an optimal TMN circuit adjustment value corresponding to the determined use bandwidth and channel and the determined state of the terminal itself based on the extracted reference table.

Then, the portable terminal performs antenna matching with the optimum TMN circuit adjustment value determined in step 113. [ That is, the portable terminal performs antenna matching with the LC circuit element value corresponding to the determined optimal TMN circuit adjustment value.

Here, the portable terminal may set the antenna matching point differently according to the mode of the portable terminal. First, when the mobile terminal is in the call mode, the mobile terminal can determine an antenna matching point by excluding an uplink transmission time, a downlink reception time, and a reception monitoring execution time. For example, as shown in FIG. 3, in the communication mode, eight clocks are generated in the frame, uplink transmission is performed in the clock 0, reception monitoring is performed in the clock 2, Assume that link reception is performed. In this case, the portable terminal can perform the antenna matching at the first, fourth, and seventh clocks. In the idle mode, when the antenna matching is required according to the occurrence of an event such as a band change, a channel change, and a terminal state change, the portable terminal can perform antenna matching at the time of event occurrence. Therefore, the portable terminal can determine the antenna matching point in accordance with the mode of the portable terminal, and can perform antenna matching at the determined antenna matching point. After that, the portable terminal terminates the algorithm according to the present invention.

2 is a block diagram illustrating the configuration of a portable terminal according to an embodiment of the present invention.

The portable terminal may include a controller 200, a modem 202, a radio frequency (RF) processor 204, a TMN 206, and a memory 208.

Referring to FIG. 2, the controller 200 performs control and processing for overall operation of the portable terminal. The control unit 200 also provides a transmission signal to the modem 202 and processes the reception signal from the modem 202. [ In addition to these conventional functions, the control unit 200 processes a function for performing antenna matching in consideration of the human body effect of the user and the state of the portable terminal. The operation of the controller 200 for performing antenna matching will be described in detail as follows.

First, the control unit 200 determines the state of the terminal. That is, the controller 200 determines the mode of the portable terminal, the slide state of the portable terminal, and the position of the portable terminal. The portable terminal can determine the position of the portable terminal based on the slide state of the portable terminal, the mode of the portable terminal, whether the receiver is used, whether the loudspeaker is used, whether the ear jack is connected, and whether the Bluetooth audio is connected have. For example, if the portable terminal is in the idle mode, the controller 200 determines the state of the terminal to be a free state. At this time, when the terminal is switched from the idle mode to the call mode, the controller 200 checks the slide state and reads the memory to check whether or not the receiver is used. As a result of the check, if the slide state is the up state and the memory reading result is set to use the receiver, the state of the terminal is determined as S / U H + H state as shown in Table 3. At this time, if a signal for switching from the receiver to the speaker is input from the input unit, the portable terminal switches the state of the terminal from S / U H + H to S / U Hand state.

The control unit 200 extracts a reference table from the memory 208, determines an optimal TMN circuit adjustment value corresponding to the used band and channel, and the determined state of the terminal based on the extracted reference table, And provides the TMN circuit adjustment value to the TMN unit 206. Here, providing the determined optimum TMN circuit adjustment value to the TMN unit 206 is performed by the physical layer, not by the application layer. Accordingly, when antenna matching is required according to a band change, a channel change, or a terminal state change, the TMN unit 206 can perform antenna matching immediately at the corresponding antenna matching point.

The modem 202 performs baseband modulation and demodulation on the transmission and reception signals.

The RF processing unit 204 performs RF band processing on the transmission / reception signal. For example, the RF processing unit 204 performs amplification of an RF band transmission / reception signal, conversion between an RF band signal and a baseband signal, and the like.

The TMN unit 206 includes a variable LC circuit designed on the path between the antenna and the RF processing unit 204 for antenna matching and performs antenna matching with the optimum TMN circuit adjustment value provided from the controller 200. [ That is, the TMN unit 206 performs antenna matching with the LC circuit element value corresponding to the determined optimal TMN circuit adjustment value.

Here, the TMN unit 206 may set different antenna matching points according to the mode of the portable terminal.

First, in the communication mode, the TMN unit 206 may determine an antenna matching point by excluding an uplink transmission time, a downlink reception time, and a reception monitoring execution time. In the idle mode, the TMN unit 206 can perform antenna matching at the time of event occurrence when antenna matching is required according to occurrence of an event such as a band change, a channel change, and a terminal state change.

The memory 208 stores microcode of a program for processing and controlling the control unit 200 and various reference data, and stores temporary data generated during execution of various programs. In particular, the memory 208 stores a program for performing antenna matching in consideration of the human body influence of the user and the state of the portable terminal. Also, the memory 208 stores a reference table. Here, the reference table may be configured as shown in Table 2, for example. The control unit 200 may classify all the channels of the corresponding band into a predetermined number of groups for each service network band, configure a reference table for each classified group, and store the configured reference table in the memory 208. Here, the number of classification is determined in consideration of the bandwidth of the corresponding band.

The RF performance (TRP / TIS) measurement result of the portable terminal having the device configuration as shown in FIG. 2 is shown in Table 4 below.

Here, GSM850, DCS1800, and PCS1900 represent different service network bandwidths, Ref refers to a case where the TMN scheme proposed in the present invention is not applied, and TMN refers to a case where the TMN scheme proposed in the present invention is applied. TRP (Total Radiated Power) and TIS (Total Isotropic Sensitivity) are indicators of the transmission performance and reception performance of wireless communication devices in free space. TRP is the maximum transmission power when the bit error rate (BER) is 2.44% it means. The higher the values of TRP and TIS, the better the matching of the antenna, which means that the reflection voltage is minimized and the RF performance of the mobile terminal is increased.

The results of measurement of the transmission / reception ratio and the mute rate of the portable terminal having the device configuration as shown in FIG. 2 are shown in Table 5 below.

Table 5 shows the measurement results of the transmission / reception ratio and the mute rate when the TMN scheme proposed in the present invention is applied, compared with the case where the TMN scheme proposed in the present invention is not applied. Overall, the TMN scheme proposed in the present invention The results of this study are summarized as follows.

FIG. 4 is a flowchart illustrating an embodiment of a UE status determination process (step 109) described with reference to FIG.

When the portable terminal is powered on, the terminal extracts the reference table from the memory. Then, through the real time operating system (RTOS), the band of the portable terminal is first checked and the channel is selected. Then, the portable terminal checks the status of the terminal. For example, the portable terminal checks whether the mode of the terminal is the call mode or the idle mode through the real-time operating system. In addition, the portable terminal checks whether the proximity sensor is operating and whether the USB is connected through a non-RTOS (non-RTOS).

According to whether the terminal mode, the operation of the proximity sensor, and whether the USB is connected, the state of the terminal can be determined in four cases as follows: Free, Hand, Head + hand and Optimization .

mode Proximity sensor USB condition Idle Do not care X Free Call X X Hand Call O X Head + Hand Call Do not care O USB optimization Do not care Do not care Do not care Test mode (Key string test mode)
1. Free
2.Hand
3. Head
3.Head + Hand
4. USB Optimization

Here, the parameter 'O' of the proximity sensor means that the external object is close to the proximity sensor, and 'X' means that the external object is not close to the proximity sensor. The parameter 'O' of the USB means that the external device is connected to the USB connector of the terminal, and 'X' means that the external device is not connected to the USB connector of the terminal. Also, 'Do not care' means that parameters are not taken into consideration in determining the position.

The portable terminal confirms the mode in step 1091. [ If it is determined in step 1091 that the mode is the idle mode, the process advances to step 1092. The portable terminal determines the state of the terminal to be in a free state in step 1092 and then proceeds to step 111 described above. At this time, the portable terminal does not consider whether the proximity sensor operates in step 1092. [ Also, if the portable terminal is in the idle mode, it is regarded that the external device is not connected to the USB.

The portable terminal proceeds to step 1093 if it is determined in step 1091 that it is in the communication mode. The portable terminal checks in step 1093 whether or not the USB connection is established. If it is determined in step 1093 that an external device is connected to the USB, the process proceeds to step 1094. The portable terminal determines the status of the terminal to USB Optimization status in step 1094 and then proceeds to step 111. [ At this time, the portable terminal does not consider whether the proximity sensor operates in step 1094.

If it is determined in step 1093 that the external device is not connected to the USB, the portable terminal proceeds to step 1095. The portable terminal checks in step 1095 whether or not the proximity sensor is operating. If it is determined in step 1095 that the proximity sensor does not operate, the flow advances to step 1096. The portable terminal determines the state of the terminal to the Hand state in step 1096 and then proceeds to step 111. [

The portable terminal proceeds to step 1097 when the proximity sensor is operated as a result of the confirmation at step 1095. [ Here, the operation of the proximity sensor means that the proximity sensor outputs the proximity signal to the control unit of the terminal as the proximity sensor approaches the external object. The terminal determines the state of the terminal to be the Head + Hand state in step 1097 and then proceeds to step 111. [

 Meanwhile, when a specific input signal is input from the input unit, the portable terminal outputs a test mode (Key string test mode) screen for testing RF performance and the like. Also, the portable terminal does not consider whether or not the portable terminal is in the test mode, whether the proximity sensor is operated, and whether the USB is connected. When the user is in this test mode, the user can arbitrarily determine the state of the terminal. For example, after switching the terminal to the test mode, the user can determine the status of the terminal to be one of Free, Hand, Head, Head + Hand, and USB Optimization. For example, the user can press the number key 1 to determine the state of the terminal to be in a free state.

FIG. 5 is a block diagram illustrating a configuration of a portable terminal according to another embodiment of the present invention. Referring to FIG.

5, the portable terminal of the present invention includes a control unit 300, a modem 310, an RF processing unit 320, a TMN unit 330, a memory 340, a proximity sensor 350, a connector 360 ), An input unit 370, and a display unit 380.

The control unit 300 receives a signal indicating proximity of an external object from the proximity sensor 350. Further, the control unit 300 receives a signal from the connector 360 indicating whether or not the external device is connected.

The control unit 300 determines the state of the terminal according to whether it is a call, proximity sensor operation, USB connection, or the like. For example, when the terminal is in the idle mode, the controller 300 determines the state of the terminal as a free state.

 When the terminal is switched from the idle mode to the call mode, the controller 300 checks whether the terminal is connected to an external device and whether the proximity sensor is operated. As a result of checking, if the external device is connected through the USB terminal, the state of the terminal is determined as the USB optimized state. On the other hand, when an external device is not connected and a proximity signal is received from the proximity sensor 350, the state of the terminal is determined as a head-and-hand state. If the proximity signal is no longer received from the proximity sensor 350, the state of the terminal is switched from the head-and-hand state to the hand state.

When a signal indicating a specific input signal, for example, # 7800 * #, is inputted from the input unit 370, the control unit 300 switches the state of the terminal to the test mode. The control unit 300 controls the display unit 380 to output a test mode screen when the mode of the terminal is switched to the test mode. When the status determination signal is inputted from the input unit 370 in the test mode, the controller 300 determines the status of the terminal in a state corresponding to the status determination signal. In addition, when determining the status of the terminal, the control unit 300 does not consider whether a call is made, whether a proximity sensor is operated, and whether a USB connection is established. The control unit 300 determines an optimal TMN circuit adjustment value corresponding to the used band, the channel, and the determined terminal state based on the reference table 341 stored in the memory 340, To the TMN unit 330.

The modem 310, the RF processing unit 320, the TMN unit 330, and the memory 340 perform the same functions as the corresponding configurations described above with reference to FIG.

Reference table 341 is configured with optimal TMN circuit adjustment values according to Free, Hand, Head + Hand, and USB Optimization states.

The proximity sensor 350 may include a light emitting unit, a light receiving unit, and a shielding film, and may be mounted on an electronic circuit board mounted inside the terminal. The proximity sensor 350 senses the proximity of an external object and outputs it to the control unit 300. Accordingly, the control unit 300 may allow or block the input of the user command through the input unit 370, for example, the touch screen, in consideration of the sensing signal input from the proximity sensor 350. [ Also, the controller 300 may perform antenna matching in consideration of the sensing signal.

The light emitting portion of the proximity sensor 350 radiates light to the outside in order to measure the proximity distance to an external object and the light receiving portion of the proximity sensor 350 receives the light reflected from the external object can do. The shielding film of the proximity sensor 350 may be provided between the light emitting portion and the light receiving portion to prevent the light emitted from the light emitting portion from directly entering the light receiving portion to prevent the proximity sensor 350 from malfunctioning. Preferably, the proximity sensor 350 may use an infrared sensor that detects the approach of an external object to the sensing area over a certain distance using infrared rays. At this time, the light emitting unit of the proximity sensor 350 may be a light emitting diode (LED) that emits infrared rays (IR).

The case where the light emitting unit and the light receiving unit of the proximity sensor 350 are physically separated and the shielding film exists is taken as an example. However, the structure of the proximity sensor 350 is not limited to this and can be changed by those skilled in the art. That is, it is also possible to use a proximity sensor in which the light emitting portion of the proximity sensor 350 and the light receiving portion are integrally combined. On the other hand, a lens may be installed on the upper portion of the proximity sensor 350. Here, the lens not only allows the light emitted from the light emitting portion of the proximity sensor 350 and the light reflected by the external object to pass through the light receiving portion of the proximity sensor 350 to pass therethrough, It can be prevented from being exposed.

When the connector 360 is connected to an external device through a wire or wireless connection, the connector 360 outputs a signal to the controller 300. Accordingly, the control unit 360 can perform antenna matching considering whether or not it is connected to an external device. The connector 360 outputs the data received from the external device to the control unit 300 and transmits the data received from the control unit 300 to the external device. The connector 360 may include a USB terminal, an ear jack, a Bluetooth module, a TA (Terminal Adapter) terminal, and a Dock terminal for charging or the like.

The results of measurement of the RF performance (TRP / TIS) of the portable terminal having the device configuration as shown in FIG. 5 are shown in Table 7 below.

Here, GSM850, GSM900, DCS1800, PCS1900, WCDMA2100, WCDMA1900 and WCDMA900 represent different service network bands. Voda Spec. Refers to the standard set by European mobile operator Voda. Default ANT means a case where the TMN scheme limited by the present invention is not applied, and with Tunable means a case where the TMN scheme proposed in the present invention is applied. Free Space means the free state defined above, and Head Phantom means that the terminal is attached to the head of the human body model. In Table 7, the left result value means TRP and the right result value means TIS.

The apparatus and method for antenna matching in the portable terminal of the present invention are not limited to the above-described embodiments, and various modifications may be made within the scope of the technical idea of the present invention.

200: control unit 202: modem
204: RF processor 206: TMN
208: Memory
300: control unit 310: modem
320: RF processor 330: TMN
340: memory 350: proximity sensor
360: connector 370: input
380:

Claims (20)

A method for antenna matching in a portable terminal,
Classifying all the channels of the corresponding band into a plurality of groups for each service network band, and constructing a reference table in which an optimal TMN (Tunable Matching Network) circuit adjustment value is defined for each of the classified groups;
Determining a state of the portable terminal;
Determining an optimal TMN circuit adjustment value corresponding to the determined state of the portable terminal based on the reference table; And
And performing antenna matching according to the determined optimal TMN circuit adjustment value. The method according to claim 1,
Determining a state of the terminal based on at least one of whether to connect to an external device, whether to use the receiver, whether to use a speaker, and whether to receive a sensing signal from the proximity sensor; A head + hand state, and a free state.
The hand state is a state in which a terminal is located in a hand of a user while a hand is in a call mode, a terminal is located in a head of a user while the head and hand state is in a call mode, Wherein the terminal is in an idle mode. 3. The method of claim 2,
And a USB Optimization state connected to an external device via a USB terminal during a communication mode. 4. The method of claim 3,
Determining a state of the portable terminal as the free state when the portable terminal is in an idle mode;
Determining a state of the portable terminal as the USB-optimized state when an external device is connected through the USB terminal during a call mode;
Determining a state of the portable terminal as the hand state when an external device is not connected through the USB terminal and the proximity signal is not input from the proximity sensor during a communication mode; And
And determining the state of the portable terminal as the head-and-hand state when an external device is not connected through the USB terminal during a call mode and an adjacent signal is input from the proximity sensor. 5. The method of claim 4,
When the status determination signal is inputted while the terminal is in the test mode, determining the status of the terminal as a status corresponding to the status determination signal among the hand status, the head and hand status, the free status and the USB optimization status ≪ / RTI > 3. The method of claim 2,
Determining a state of the portable terminal as the free state when the portable terminal is in an idle mode;
Determining a state of the portable terminal as the head-and-hand state when the portable terminal is in a call mode and the receiver is used; And
And determining the state of the portable terminal as the hand state when the portable terminal is in a call mode and the speaker is used. delete delete 2. The method of claim 1, wherein performing antenna matching comprises:
Wherein the antenna matching is performed at a time other than an uplink transmission time, a downlink transmission time, and a reception monitoring execution time during a communication mode. The method according to claim 1,
The determined state may include:
The mobile terminal includes at least one of a band used by the portable terminal, a channel used in the band, a call status, a slide state, a connection with an external device, a position of the portable terminal, Lt; / RTI > The method according to claim 1,
Wherein determining the optimal TMN (Tunable Matching Network)
(TMN) circuit adjustment value corresponding to the identified band and channel is determined by searching a service network, checking a band and a channel used by the portable terminal in the searched service network, and determining an optimal Tuning Matching Network How to. An apparatus for antenna matching in a portable terminal,
A reference table in which an optimal TMN (Tunable Matching Network) circuit adjustment value is defined for each of the classified groups, and a state of the portable terminal is determined And determining an optimal TMN circuit adjustment value corresponding to the determined state based on the reference table; And
And a TMN unit for performing antenna matching using the optimal TMN circuit adjustment value received from the control unit. 13. The method of claim 12,
The controller controls the state of the terminal based on at least one of whether it is connected to an external device, whether the receiver is used, whether the speaker is used, and whether the detection signal is received from the proximity sensor. + hand " state and a " free " state,
The hand state is a state in which a terminal is located in a hand of a user while a hand is in a call mode, a terminal is located in a head of a user while the head and hand state is in a call mode, Wherein the terminal is in an idle mode. 14. The method of claim 13,
And a USB optimization state connected to an external device via a USB terminal in a communication mode. 15. The apparatus of claim 14,
Determining the state of the portable terminal as the free state when the portable terminal is in the idle mode,
When the external device is connected through the USB terminal during the communication mode, the state of the portable terminal is determined as the USB-optimized state,
If the external device is not connected through the USB terminal during the communication mode and the proximity signal is not input from the proximity sensor, the portable terminal determines the hand condition to be the hand condition,
Wherein the portable terminal determines the state of the portable terminal to be in the head-and-hand state when an external device is not connected through the USB terminal during a call mode and a proximity signal is input from the proximity sensor. 16. The apparatus of claim 15,
When the status determination signal is inputted while the terminal is in the test mode, the status of the terminal is determined as the status corresponding to the status determination signal among the hand status, the head and hand status, the free status and the USB optimization status . 14. The apparatus of claim 13,
Determining the state of the portable terminal as the free state when the portable terminal is in the idle mode,
Determining the state of the portable terminal as the head-and-hand state when the portable terminal is in a call mode and the receiver is used,
When the portable terminal is in a call mode and the speaker is used, determines the state of the portable terminal as the hand state. delete delete An apparatus for antenna matching in a portable terminal,
A connector for connection with an external device;
A proximity sensor for detecting proximity of an external object;
A controller for determining a state of the portable terminal based on a signal input from the connector, a signal input from the proximity sensor, and a communication state, and determining an optimal TMN circuit adjustment value corresponding to the determined state; And
And a TMN unit for performing antenna matching using the optimal TMN circuit adjustment value received from the controller.

Images