Receiving apparatus and method of cellular phone

专利摘要:
PURPOSE: A receiving method of a wireless terminal is provided to enable the first antenna to receive an electric wave in a direction where sensitivity of the first antenna is high, and to enable the second antenna to receive the electric wave in a direction where sensitivity of the second antenna is high, thereby compensating sensitivity deterioration. CONSTITUTION: When the first antenna and the second antenna transmit a received electric wave to an RF(ST1), the RF measures an RF level of the electric wave to output the measured level to a microcomputer. The microcomputer compares the first RF level with the second RF level, and decides which antenna has a bigger RF level(ST2). If the first RF level is bigger, the microcomputer maintains an on-state of a switch connected to the first antenna, and turns off a switch connected to the second antenna(ST3). If the second RF level is bigger, the microcomputer turns off the switch connected to the first antenna, and maintains an on-state of the switch connected to the second antenna(ST4). The microcomputer decides whether a predetermined time elapses(ST5). If not, the microcomputer maintains on/off states of a current switch(ST6).
公开号:KR20030088530A
申请号:KR1020020026036
申请日:2002-05-11
公开日:2003-11-20
发明作者:박근홍
申请人:엘지전자 주식회사；
IPC主号:

专利说明:

RECEIVING APPARATUS AND RECEIVING METHOD OF RADIO TERMINAL {RECEIVING APPARATUS AND METHOD OF CELLULAR PHONE}
[8] The present invention relates to a receiving apparatus and a receiving method of a wireless terminal, and more particularly, to a receiving apparatus and a receiving method of a wireless terminal such that the sensitivity of the antenna does not fall even when the folder of the clamshell wireless terminal is closed.
[9] Conventional clamshell wireless terminals use one internal antenna and one external antenna.
[10] When measuring the sensitivity of the built-in antenna and the external antenna when the folder of the conventional clamshell wireless terminal is opened and closed, the sensitivity of the antenna is not significantly reduced when the folder is opened, but the sensitivity of the antenna is closed when the folder is closed. In other words, it can be seen that the degradation significantly in the antenna direction.
[11] This desensitization occurs at both the external antenna and the internal antenna, but is particularly noticeable with the internal antenna.
[12] This is because when the folder is closed, the image ground in the direction in which the antenna is built is small so that current does not flow well to the built-in antenna.
[13] 1 shows the sensitivity pattern of the internal antenna and the external antenna when the folder of the clamshell terminal is closed.
[14] The sensitivity pattern of FIG. 1 measures the reception sensitivity of the antenna while rotating the folder 360 degrees while the folder is closed and the folder is closed. The outer pattern shows the sensitivity of the external antenna and the inner pattern shows the sensitivity of the internal antenna. Indicates.
[15] As shown in FIG. 1, both the sensitivity of the external antenna and the internal antenna are deteriorated in a specific direction (antenna direction). In particular, it can be seen that the internal antenna has a more severe deterioration phenomenon than the external antenna. .
[16] Accordingly, an object of the present invention is to provide a reception device and a reception method of a wireless terminal which can prevent the sensitivity of the antenna (especially the built-in antenna) from being remarkably reduced even when the folder is closed.
[1] 1 is a pattern diagram of reception sensitivity of an antenna measured in a closed state of a clamshell wireless terminal.
[2] 2 is a block diagram of a receiver of a wireless terminal of the present invention.
[3] 3 is a flow chart of a receiving method of a wireless terminal of the present invention.
[4] ** Explanation of Signs of Major Parts of Drawings **
[5] 1st antenna 2nd 2nd antenna
[6] 3: switch 4: RF
[7] 5: microcomputer
[17] To this end, the receiving device of the wireless terminal of the present invention comprises a first antenna; A second antenna; An RF outputting an RF level of radio waves received at the first antenna and the second antenna; A switch for turning on / off a connection between the first antenna and the second antenna and the RF; When the RF level is supplied and the RF level of the first antenna is large, the first antenna is turned on and the second antenna is turned off. When the RF level of the second antenna is large, the first antenna is turned off and the second antenna is turned on. It is characterized by including a microcomputer unit for controlling the switch by maintaining the state.
[18] In addition, the receiving method of the wireless terminal of the present invention comprises a first step of receiving a radio wave from the first antenna and the second antenna; Calculating a first RF level and a second RF level of radio waves received by the first antenna and the second antenna; Comparing the first RF level with the second RF level to operate only the first antenna when the first RF level is larger and only the second antenna when the second RF level is larger; A fourth step of determining whether a predetermined time has elapsed; And a fifth step of maintaining the state of the third step if a predetermined time has not elapsed and returning to the first step if a predetermined time has elapsed.
[19] Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.
[20] 2 shows a configuration of a receiver of a wireless terminal according to the present invention.
[21] The conventional receiver has only one built-in antenna, but the receiver of the present invention has two built-in antennas to form a complementary relationship.
[22] As shown in FIG. 2, the receiving device of the wireless terminal according to the present invention includes two antennas 1 and 2, a switch 3, an RF 4, and a microcomputer unit 5.
[23] The first antenna 1 and the second antenna 2 are installed inside the terminal and receive the airwaves, respectively.
[24] The switch 3 turns on / off the connection between the first antenna 1 and the second antenna 2 and the RF 4.
[25] The RF 4 receives radio waves received from the first antenna 10 and the second antenna 2 and receives the received power of the first antenna 1, that is, the received power of the first RF level and the second antenna 2, that is, Calculate the 2RF level.
[26] The microcomputer 5 compares the first RF level and the second RF level input from the RF 4 and controls the switch 3 according to the comparison result.
[27] 3 is a flowchart showing the operation of the receiving apparatus of the wireless terminal according to the present invention.
[28] First, in step ST1, when the first antenna 1 and the second antenna 2 of the wireless terminal in the call waiting state receive the radio wave and transmit the received radio wave to the RF 4, the RF 4 receives the radio wave. The RF level (first RF level and second RF level) of the radio wave is measured and output to the microcomputer 5.
[29] In step ST2, the microcomputer 5 compares the first RF level and the second RF level input from the RF 4 to determine which antenna has a larger RF level.
[30] According to the comparison result of the microcomputer 5, the control of the switch 3 that moves to step ST3 or step ST4 to turn on / off the connection between the antennas 1 and 2 and the RF 4 is performed.
[31] That is, when the microcomputer 5 determines that the first RF level is greater than the second RF level, that is, when the radio wave received by the first antenna 1 is stronger than the radio wave received by the second antenna 2, step ST3 The switch 3 maintains the on state of the switch 3 connected to the first antenna 1 and turns off the switch 3 connected to the second antenna 2.
[32] In contrast, when the microcomputer 5 determines that the second RF level is greater than the first RF level, that is, when the radio wave received by the second antenna 2 is stronger than the radio wave received by the first antenna 1, the step Moving to ST4, the switch 3 connected to the first antenna 1 is turned off, and the switch 3 connected to the second antenna 2 is maintained in the on state.
[33] It moves to next step ST5, and determines whether the predetermined time has passed.
[34] If the predetermined time has not elapsed, the process moves to step ST6 to maintain the current state, that is, the on / off state of the current switch, and to return back to step ST5.
[35] If a predetermined time has elapsed, the process returns to step ST1 and the above steps are repeated.
[36] The step ST5 of determining whether a predetermined time has elapsed after the switch control steps ST3 and ST4 is to maintain the current state for a predetermined time in order to prevent malfunction due to frequent on / off of the switch 3.
[37] In the embodiment of the present invention, the reception device and the reception method of the wireless terminal are applied to the folder type wireless terminal, but it is obvious that the present invention can be applied to a wireless terminal which is not a folder type.
[38] As described above, in the present invention, two antennas are mounted so that the first antenna receives the radio wave in the direction where the sensitivity of the first antenna is good and the second antenna receives the radio wave in the direction where the second antenna has good sensitivity. When closing the specific direction, that is, the sensitivity of the antenna side to compensate for the degradation is that the effect is good to come out from either side.

权利要求:
Claims (3)
[1" claim-type="Currently amended] A first antenna; A second antenna; RF for outputting the RF level of the radio wave received at the first antenna and the second antenna; A switch for turning on / off a connection between the first antenna and the second antenna and the RF; When the RF level of the first antenna is supplied with the RF level, the first antenna is maintained in an on state and the second antenna is turned off. When the RF level of the second antenna is large, the first antenna is turned off. And a microcomputer unit for controlling the switch by maintaining the on state of the second antenna.
[2" claim-type="Currently amended] The receiving apparatus of claim 1, wherein the microcomputer maintains the switch state for a predetermined time after controlling the switch.
[3" claim-type="Currently amended] A first step in which the first antenna and the second antenna receive radio waves; Calculating a first RF level and a second RF level of radio waves received by the first antenna and the second antenna; Comparing the first RF level with the second RF level to operate only the first antenna when the first RF level is larger and only the second antenna when the second RF level is larger; A fourth step of determining whether a predetermined time has elapsed; And a fifth step of maintaining the state of the third step if a predetermined time has not elapsed and returning to the first step if a predetermined time has elapsed.

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同族专利:

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2002-05-11|Application filed by 엘지전자 주식회사

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2002-05-11|Priority to KR1020020026036A

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2003-11-20|Publication of KR20030088530A

优先权:

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申请号 | 申请日 | 专利标题

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KR1020020026036A|KR20030088530A|2002-05-11|2002-05-11|Receiving apparatus and method of cellular phone|