TWI257738B - Electronic device and signal transceiving method thereof - Google Patents

Abstract

The present invention relates to an electronic device, which includes a first antenna, a second antenna, a third antenna, a fourth antenna, a first matching circuit, a second matching circuit, a third matching circuit, a fourth matching circuit, a switching circuit and a signal processing/control circuit. The first matching circuit, the fourth matching circuit and the switching circuit are all coupled to the signal processing/control circuit; the second matching circuit and the third matching circuit are both coupled to the switching circuit; the first antenna is coupled to the first matching circuit; the second antenna is coupled to the second matching circuit; the third antenna is coupled to the third matching circuit; the fourth antenna is coupled to the fourth matching circuit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal transmitting and receiving method and an electronic device thereof, and more particularly to a method for transmitting and receiving a PHS signal and a GSM signal and an electronic device therefor. [Prior Art] Referring to Figure 1a, it shows a conventional combination of a personal mobile communication system.

(PHS, Personal Handyphone System, hereinafter referred to as PHS) and the Global System for Mobile Communication (GSM) dual-mode mobile phone antenna group, which has a first antenna 10; A first signal transmitting and receiving circuit 11, a second antenna 20, a second signal transmitting and receiving circuit 21, and an integrated processing circuit 3A. The first antenna 10 is connected to the first signal transmitting and receiving circuit 11, and the first signal transmitting and receiving circuit 11 is connected to the integrated processing circuit 30. The second antenna 20 is coupled to the second signal transmitting and receiving circuit 21, and the second signal transmitting and receiving circuit 21 is coupled to the integrated processing circuit 3. The first antenna 10 and the first signal transmitting and receiving circuit 11 are configured to transmit and receive PHS signals (1 900 MHz), and the second antenna 20 and the second signal transmitting and receiving circuit 21 are used for transmitting and receiving GSM signals. The so-called GSM signals include GSM9 0 0 (900 MHz) and DCS 1 800 (1 80 0 MHz) signals at both frequencies. φ Since the first antenna PHS 1 9000 frequency band and the second antenna's DCS 1 80 0 frequency band are too close to each other, the two antenna isolations are not good, causing mutual interference between the two antennas and greatly degrading Its antenna characteristics. Therefore, the first antenna 1 〇 and the second antenna 2 必须 must be placed away from each other in the design of the mechanism to reduce interference. In particular, when the receiving effect of the GSM90 0 signal is not good, the dual standby mode of the dual-mode mobile phone will simultaneously send and receive DCS 1 800 signals and PHS.

0813 - A40437TWF( N2); PWNC-(1)-0088-TWXX; LEMON. p t d Page 5 1257738 V. INSTRUCTIONS (2) SIGNAL 'The interference problem is therefore difficult to avoid. Go to ί Ϊ 1 b, which shows the mechanism design of a conventional dual-mode mobile phone, which is applied to the ontology 3. It is: 2 - the body 3 and an upper cover 2. The upper cover 2 is pivotally connected to the transmission line 12, and the first antenna 1Q (four) is covered, and the second antenna 20 is disposed in the body 3. A spacing d between the n u and the second antenna 20 to reduce nuisance. Ding - and instead: in the conventional technology, the first antenna 10 is separated by a spacing d. , ',, the isolation effect is still limited, its receiving effect remains to be treated. [Inventive content] - Irm wants to solve the above problems of the prior art, and provides the line first antenna, a second antenna, - the third day a flute-^ line, a first matching circuit, a second matching circuit, a -lu circuit, a fourth matching circuit, a switching circuit, and a - control circuit. The first matching circuit and the fourth matching circuit τ=the road are all coupled to the signal processing/control circuit. The second matching circuit and the second matching circuit are both coupled to the switching circuit. Day circuit. The second antenna consumes the second matching circuit. Third; three matching circuits. The fourth antenna is coupled to the fourth matching circuit. The present invention increases the distance between the first antenna (PHS 1 00 0 antenna) and the (ycsi 800 antenna), thereby providing a "signal isolation effect" during the call, effectively improving The quality of the signal received. And more

0813-A40437TWF(N2); PWNC-C0- 〇〇88-TWXX; LEMON.ptd Page 6 1257738 1 V. Description of invention (3) ' ~ ----- The invention can be switched according to the receiving effect of the number The second antenna day # three antennas transmit and receive the DCS1 800 signal, so that the best reception can be obtained. [Embodiment] ^ ^ Referring to Figure 2a, which shows the electronic device of the present invention (dual mode) A block diagram of the hand 100 includes a first antenna 1! 〇, a second antenna i 2 〇, a second antenna 130, a four-four antenna 140, a first matching circuit ill, and a second matching The circuit 121, a third matching circuit 丨3i, a fourth matching circuit 141, a switching circuit 150 and a signal processing/control circuit 16 〇. The first matching circuit 111, the fourth matching circuit 141 and the switching circuit The first matching circuit 121 and the third matching circuit 131 are coupled to the switching circuit 150. The first antenna 110 is coupled to the first matching circuit 111. The line 120 is connected to the second matching circuit 121. The second antenna 130 is connected to the second matching circuit 1 3 1. The fourth antenna 1 4 0 _ The fourth matching circuit 141. Referring to FIG. 2b, when the signal is transmitted, the sound or image signal is converted by the signal processing/control circuit 160, and transmitted through the first antenna 11〇, the second antenna 1 2 0, and the third. The first antenna 110 transmits a first wireless signal (PHS signal, 1960 MHz), and the second antenna 20 and the third antenna 130 are selected by the switching circuit 150. Sending a second wireless signal (DCS1800 signal '1800MHz). The fourth antenna 140 transmits a third wireless signal (GSM9 0 0 signal, 90 0 MHz). Referring to FIG. 2c, when receiving the signal, the first antenna 11 0 receives The second antenna 1 2 0 and the third antenna 1 3 0 are selected to receive the second wireless signal by the switching circuit 150. The fourth antenna 1 4 0 receives the third wireless signal

0813-A40437TWF(N2); PWN〇C0-0088-TWXX;LEM0N.ptd Page 7 -1257738 V. Invention Description (4). The first wireless signal, the second wireless signal, and the second benefit are transmitted to the signal processing/control circuit 160, and the:::: and the like signal. The first matching circuit 1 1 1 , the second matching circuit 121 , the second I 3 1 and the fourth matching circuit 1 4 1 are respectively arranged in the first antenna 丨1 120, the third antenna 13A and the fourth antenna 140 and the signal processing / brother two days 1 60, thereby reducing the power loss, and the efficiency of electricity and transmission. "The tiger receives the reference to Fig. 3a, which shows the electronic device of the present invention (the structure of the 00 in the state of the cover, which further includes a body 3' and a '). The upper cover 2 is pivotally connected to one of the first ends 31 of the body 3. The first II 0 is disposed on the upper cover, and the first wireless antenna 2 and the fourth antenna 140 are disposed in the body 3 by using the transmission line 丨2, and are connected to the end 31. The third antenna 130 is disposed in the body 3 and adjacent to the second end portion 32 of the body 3. The second end portion 32 is opposite to the first end portion 31. At this time, the first antenna 110 and the second antenna 12A have a first spacing di, and the first antenna 110 and the third antenna 130 have a second spacing d2. The distance between the second spacing d2 is greater than the first spacing dl, whereby when the electronic mounting device (dual-mode mobile phone) 100 of the present invention is in the state of the cover, the first antenna 11 0 and the next day can be utilized respectively. The line 1 130 transmits and receives the first wireless signal and the second wireless signal, thereby achieving a better signal transmission effect than the prior art. In particular, when the electronic device (dual-board mobile phone) 100 is in the state of being covered, it is generally in a state in which the user talks or performs other intensive transmissions. Therefore, the signal in the state of the cover is improved, and the improvement effect is very high. Significant.

0813-A40437T\VF(N2); PWNC-CO-0088-TO; LEMON.ptd Page 1257738 V. Invention Description (5) Referring to FIG. 3b, when the electronic device (dual-mode mobile phone) 本00 of the present invention is in the 阖00 In the cover state, the signal processing/control circuit 1 60 can control the switching circuit 150 to switch the second antenna by the second antenna 丨2 〇. Since the first antenna 11 〇 and the second antenna 120 have a third spacing d 3 in the state of the cover, the first antenna 1 and the second antenna 丨 2 can be reduced. Interference. In addition, if the user holds the mobile phone and the palm of the hand blocks the second antenna 120 or the third antenna 13 〇, which affects the signal transmission and reception, the electronic device 100 of the present invention can automatically receive the second antenna 丨 2 〇 and the third antenna 13〇 are selected to perform the receiving and receiving of the second wireless signal. The photographing method of the present invention is described with reference to Fig. 2a and Fig. 4 of the photograph. First, the user activates the phone (step s〇). Next, the signal processing/control circuit 160 transmits the first antenna 11A, the second antenna 12A or the third antenna 130 (in this embodiment, the second antenna 12A is taken as an example) and the fourth antenna 140 respectively. Searching for the first wireless signal, the second wireless signal, and the benefit line signal (step S1). Then, the signal processing/control circuit 16 sets the mobile phone to be the first/second wireless signal dual standby mode or the first/gain line dual standby mode according to the second wireless signal strength and the third wireless signal strength. Step S2). If it belongs to the first/third wireless minus dual standby fork type 'before' processing/control circuit i 6 〇 selects to transmit information by using the first wireless signal and the third wireless signal (step S21). In the dual standby mode, the signal processing/control circuit 160 selects the transmission of the information by the first wireless signal and the second wireless signal, and detects whether the received product f of the wireless signal meets the standard at this time.

f 9 pages 1257738 V. Description of invention (6) C step S3). Wherein, if the bit error rate (bit eJ^〇r rate) of the second wireless signal is less than 2.4% (threshold value), the receiving quality is in accordance with the standard. If the bit error rate (biterr 〇rra ΐ e ) of the first wireless nickname is less than 2.4%, the original antenna (for example, in this embodiment, the second antenna 12 Μ transmits and receives the second wireless signal ( Step S31). If the bit error rate of the second wireless signal is greater than 2.4%, the signal processing/control circuit 160 controls the switching circuit 150 to switch the antenna for transmitting and receiving the second wireless signal. In this embodiment, switching from the second antenna 120 to the third antenna improves the receiving effect by 4 (step s 3 2 ). , 'The control circuit 160 uses a one-year-old μ Fenggang hole number to process / one计数 计数 计数 ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ) °. ΪίΪ is weak, so the antenna switching is stopped. (If the number of I-knobs does not reach the predetermined number of times, then the process returns to step S3 to re-confirm whether the receiving quality of the wireless signal is in compliance with the standard.

The signal transmission and reception and the signal strength/quality judgment are controlled and judged by the processing/control circuit 160. ..., applying the method of the present invention, when the user uses the palm ^ or the third antenna 13 〇, which affects it: Brother: Day J: Device 1. 〇Automatically send and receive the second wireless signal by the second day of the day and the day of the day. Although the present invention has been described in detail with reference to the preferred embodiments of the present invention, it is to be understood that the present invention may be used in the spirit and scope of the invention. Therefore, this hair

0813-A40437TWF(N2);PWNC.CO-0088-TWXX· LEMON.ptd Page 10 -1257738

◦ 813-A40437TWF(N2); PWNC-(1)-0088-TWXX; LEMON.ptd Page 11 1257738 Schematic description of the drawing [Simple description of the diagram] Figure 1 a shows the antenna group of the conventional dual-mode mobile phone; 1b shows the mechanism design of the conventional dual-mode mobile phone; 2a shows the block diagram of the dual-mode mobile phone of the present invention; 2b shows the signal transmission situation of the dual-mode mobile phone of the present invention; 2c shows The signal receiving situation of the dual-mode mobile phone of the present invention; FIG. 3a is a schematic structural view showing the dual-mode mobile phone of the present invention in a state of a cover; FIG. 3b is a structural diagram showing the structure of the dual-mode mobile phone of the present invention in a cover state. Fig. 4 is a diagram showing the signal transmission and reception method of the present invention. [Main component symbol description] 1~ dual mode mobile phone 2~ upper cover 3~ body 1 0~ first antenna 11~ first signal transmitting and receiving circuit 2 0~second antenna _ 2 1~ second signal transmitting and receiving circuit 30~ integration Processing circuit 31 to first end portion 3 2 to second end portion I 0 0 to electronic device (dual mode mobile phone) II 0 to first antenna

0813-A40437TWF(N2); PWNC-(1)-0088-TWXX; LEMON.ptd Page 12 • 1257738 Schematic description of the pattern 1 1 1 to the first matching circuit 1 2 0 to the second antenna 121 to the second matching circuit 1 3 0 to 3rd antenna 131 to 3rd matching circuit 1 4 0 to 4th antenna 141 to 4th matching circuit 1 5 0 to switching circuit 1 6 0 to signal processing/control circuit I d 1 to first pitch d2 to Two pitches d3 to third pitches SO, S1, S2, S21, S3, S31, S32, S33, S34 to steps

0813-A40437TWF(N2); PWNC-(1)-0088-TWXX;LEMON.ptd第13页

Claims (1)

Ϊ257738 VI. Patent Application 1. An electronic device comprising: a signal processing/control circuit; a first antenna coupled to the signal processing/control circuit, the signal processing/control circuit transmitting and receiving a signal through the first antenna a first wireless signal; a switching circuit coupled to the signal processing/control circuit; a second antenna coupled to the switching circuit; and a third antenna coupled to the switching circuit, wherein the signal processing/control circuit The switching circuit is controlled to switch to select and send a second wireless signal by the second antenna or the third antenna. The electronic device of claim 1, further comprising a first matching circuit coupled between the first antenna and the signal processing/control circuit. 3. The electronic device of claim 1, further comprising a second matching circuit coupled between the second antenna and the switching circuit. 4. The electronic device of claim 1, further comprising a third matching circuit coupled between the third antenna and the switching circuit. 5. The electronic device of claim 1, wherein the first wireless signal is a P H S signal (1 9 Ο Μ Μ z ). 6. The electronic device of claim 1, wherein the second wireless signal is a DCS1800 signal (1800 MHz). 7. The electronic device of claim 1, further comprising a fourth antenna coupled to the signal processing/control circuit, the signal processing/control 0813-A40437TWF(N2); PWNC-(1)-0088-TWXX;LEM0N.ptd Page 14 1257738 6. Patent application range The circuit transmits and receives a third wireless signal through the fourth antenna. An electronic device as claimed in claim 7 further comprising: a circuit: lightly connected to the fourth antenna and the signal processing/controlling device: an electronic device as claimed in claim 7 The device, wherein the ",", or the number is a GS Μ 0 0 ( ( 9 9 ( 。 。 。 。 。 。 。 。 。 。 。 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体 本体The cover of the cover is pivoted to the body of the electronic device, as described in claim 10, in the electronic device, as described in claim 11, in the electronic device, in the basin, § The second antenna and the third antenna are both disposed in the body, and the second sinus is near the first end portion. The third antenna is adjacent to a second end; the one end is opposite to the first Ends. Μ弟一13. A signal transmission and reception method for an electronic device, the device comprising - a first antenna, a second antenna, a third antenna and a second processing / control circuit '#, the signal processing / controlling the electric 疒 antenna, the second antenna, and the third antenna, the second day = f three antennas are arranged in the electronic device, and the method comprises: 边Λ#u transceiving with the first day The line transmits and receives a first wireless signal, and transmits and receives a second wireless signal; and the antenna transmits the antenna to detect the receiving of the second wireless signal by the signal processing/control circuit 0813-A40437TWF(N2); PWNC-CO-0088-TWXX; LEMON.ptd Page 15 1257738 ------------- —__________ VI. The quality of the patent application and the results of the test The second wireless signal is selected to be transceived by the second antenna or the third antenna. 1 4 · The method for transmitting and receiving a random number according to Item 13 of the patent application scope, wherein the detection result of the reception quality of the second wireless signal is calculated by calculating a one-dimensional error rate of the second wireless signal, The bit error rate is obtained by comparing the threshold value. When the bit error rate is higher than the threshold, the electronic device selects to transmit and receive the second wireless signal by the third antenna. 1 5 · The method of transmitting and receiving signals as described in claim 14 of the patent application, wherein the 'edge threshold value is 2.4%. _1 6 · The method for transmitting and receiving a signal according to claim 4, wherein the signal processing/control circuit detects the reception quality of the second wireless signal when the third antenna transmits and receives the second wireless signal, If the bit error rate is higher than the threshold at this time, the electronic device selects to transmit and receive the second wireless signal by the second antenna. 1 . The method of transmitting and receiving a signal according to claim 16 , wherein the switching between the second antenna and the third antenna is performed in a predetermined period of time exceeding a predetermined number of times When it stops, the switching action is stopped. _ 1 8 · If the signal transmission method of the 13th item of the patent application is described, the first wireless signal is a PHS signal with a frequency of 1 9000 MHz. 1 9 · If the method of transmitting and receiving the signal of the 13th item is mentioned in the patent application scope, the second wireless signal is a Dcsl800 signal, and the frequency is 1 800 MHz. 2 0. According to the method of transmitting and receiving the nickname of the first ninth item of the patent application scope, the electronic device further includes a fourth antenna, and the signal transmitting and receiving method is further 1257738 0813-A40437TWF(N2); PWNC-CO-0088-TWXX; LEMON.ptd Page 17