CN1114309C - radio handset - Google Patents

radio handset Download PDF

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Publication number
CN1114309C
CN1114309C CN 99102265 CN99102265A CN1114309C CN 1114309 C CN1114309 C CN 1114309C CN 99102265 CN99102265 CN 99102265 CN 99102265 A CN99102265 A CN 99102265A CN 1114309 C CN1114309 C CN 1114309C
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circuit board
package
electric conductor
plate face
mobile radio
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CN1264237A (en
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简有崑
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BenQ Corp
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Acer Computer Co Ltd
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Abstract

A radio mobile phone comprises a housing, a circuit board arranged in the housing, an antenna arranged at the upper end of the housing, and an elastic first conductor. The casing comprises a front cover and a rear cover, and the rear cover comprises a metal layer plated on the inner side of the rear cover to prevent electromagnetic wave leakage or external electromagnetic interference. The circuit board comprises a board surface and an antenna connector. The antenna is electrically connected with the antenna connector to receive or transmit wireless signals. When the front cover is embedded with the rear cover, the first conductor is elastically clamped between the metal layer and the plate surface, and the metal layer, the upper end of the plate surface and the first conductor form a package for preventing electromagnetic waves from leaking out, so that the electromagnetic waves in the package are shielded, and other circuits outside the package are prevented from being interfered.

Description

无线电手机radio handset

本发明提供一种无线电手机，尤其指一种可以防止手机内部天线连接头附近的电磁波干扰其它电路的无线电手机。本发明也提供一种可以在不牺牲各项性能表现的前提下，达到精简金属遮蔽物(shielding)数量目的的无线电手机。本发明还提供一种可以强化手机壳体内侧金属层的接地效果，并改善手机内部辐射干扰问题的无线电手机。The invention provides a radio mobile phone, in particular to a radio mobile phone which can prevent electromagnetic waves near the antenna connector inside the mobile phone from interfering with other circuits. The present invention also provides a radio handset capable of reducing the amount of metal shielding without sacrificing various performances. The invention also provides a wireless mobile phone that can strengthen the grounding effect of the metal layer inside the mobile phone casing and improve the problem of radiation interference inside the mobile phone.

无线电手机包含一壳体、安装于壳体内侧的一电路板以及安装于壳体上端的一天线。电路板上设置有许多不同的功能单元，依这些功能单元处理信号的频率及功能来区分，这些功能单元可概分为第一射频电路、第二射频电路与基频电路三部分。第一射频电路主要包含天线连接头、双工器、以及功率放大器等；第二射频电路则包含射频发射电路、射频接收电路等。当无线电手机发射信号时，由于射频信号的功率很强，天线连接头、双工器、以及功率放大器等元件易有溢出的射频噪声，因此会对射频接收电路、射频发射电路、以及基频电路等功能单元构成辐射干扰。当射频接收电路受到辐射干扰时，会降低手机接收信号的灵敏度(sensitivity)。因此这些功能单元必须利用适当的隔绝装置来防止彼此辐射干扰，并且改善手机接收信号的灵敏度，以维持无线电手机的正常运作。The radio handset includes a shell, a circuit board mounted inside the shell and an antenna mounted on the top of the shell. There are many different functional units arranged on the circuit board. According to the frequency and function of the signals processed by these functional units, these functional units can be roughly divided into three parts: the first radio frequency circuit, the second radio frequency circuit and the base frequency circuit. The first radio frequency circuit mainly includes an antenna connector, a duplexer, and a power amplifier; the second radio frequency circuit includes a radio frequency transmitting circuit, a radio frequency receiving circuit and the like. When a wireless mobile phone transmits a signal, due to the strong power of the radio frequency signal, components such as the antenna connector, duplexer, and power amplifier are prone to overflow RF noise, so it will affect the RF receiving circuit, RF transmitting circuit, and baseband circuit. and other functional units constitute radiated interference. When the radio frequency receiving circuit is interfered by radiation, the sensitivity of the mobile phone to receive signals will be reduced. Therefore, these functional units must use appropriate isolation devices to prevent mutual radiation interference, and improve the sensitivity of the mobile phone to receive signals, so as to maintain the normal operation of the wireless mobile phone.

无线电手机通常会在其电路板上设置一些电性接地(ground)的金属遮蔽物，以防止手机内部各功能单元之间的辐射干扰，并且改善手机接收信号的灵敏度。除此之外，无线电手机也常在其壳体内侧涂镀一层薄的金属层，用来防止手机内部的电磁波外泄从而降低手机对外的辐射量(radiation)，并且防止来自手机外部的电磁干扰。金属遮蔽物以及壳体内侧金属层的设置，具有防止手机内部各功能单元彼此的辐射干扰、改善无线电手机在接收信号时的灵敏度、以及降低手机对外的辐射量等许多好处，因此无线电手机普遍采取这样的设计。Radio mobile phones usually have some electrically grounded metal shields on their circuit boards to prevent radiation interference between functional units inside the mobile phone and improve the sensitivity of the mobile phone to receive signals. In addition, wireless mobile phones are often coated with a thin metal layer on the inside of their shells to prevent the leakage of electromagnetic waves inside the mobile phone, thereby reducing the external radiation of the mobile phone and preventing electromagnetic radiation from outside the mobile phone. interference. The setting of the metal shield and the metal layer inside the shell has many advantages such as preventing the radiation interference between the functional units inside the mobile phone, improving the sensitivity of the radio mobile phone when receiving signals, and reducing the external radiation of the mobile phone. Therefore, radio mobile phones generally adopt Such a design.

参阅图1至图3。图1为现有的无线电手机10的示意图，图2为图1所示的无线电手机10的侧视图，图3为图1所示的无线电手机10的组成元件图。无线电手机10包含前盖12、后盖14、安装于前盖12与后盖14之间的电路板20、安装于后盖14上端的天线16、以及电池18。后盖14及电路板20分别包含四个螺丝孔15，通过这些螺丝孔将后盖14经由电路板16固接于前盖12上。See Figures 1 through 3. FIG. 1 is a schematic diagram of a conventional radio handset 10, FIG. 2 is a side view of the radio handset 10 shown in FIG. 1, and FIG. 3 is a component diagram of the radio handset 10 shown in FIG. The radio handset 10 includes a front cover 12 , a rear cover 14 , a circuit board 20 mounted between the front cover 12 and the rear cover 14 , an antenna 16 mounted on the top of the rear cover 14 , and a battery 18 . The rear cover 14 and the circuit board 20 respectively include four screw holes 15 through which the rear cover 14 is fixed to the front cover 12 via the circuit board 16 .

图4为图3所示电路板20沿A方向的示意图。电路板20上的功能单元包含：天线连接头22，其与天线16下端互相电连接；双工器(duplexer)24，用来分隔手机发射、接收的射频信号；功率放大器(power amplifier)26；用来增强发射信号的功率；射频接收电路(RF receiver circuit)28，用来接收射频信号并将其转换成基频信号(baseband signal)；射频发射电路(RF transmittercircuit)30，用来处理来自基频电路32的基频信号，并将其转换成射频信号；以及基频电路32。电路板20上的功率放大器26与双工器24、射频接收电路28、射频发射电路30、以及基频电路32等，都分别加上接地(ground)的金属遮蔽物34、35、36、37。FIG. 4 is a schematic view along direction A of the circuit board 20 shown in FIG. 3 . The functional units on the circuit board 20 include: an antenna connector 22, which is electrically connected to the lower end of the antenna 16; a duplexer (duplexer) 24, which is used to separate radio frequency signals transmitted and received by the mobile phone; a power amplifier (power amplifier) 26; Used to enhance the power of the transmitted signal; the RF receiver circuit (RF receiver circuit) 28 is used to receive the RF signal and convert it into a baseband signal (baseband signal); the RF transmitter circuit (RF transmitter circuit) 30 is used to process the signal from the baseband The base frequency signal of the frequency circuit 32 and convert it into a radio frequency signal; and the base frequency circuit 32. The power amplifier 26 and the duplexer 24, the radio frequency receiving circuit 28, the radio frequency transmitting circuit 30, and the base frequency circuit 32 etc. on the circuit board 20 are all added with ground metal shields 34, 35, 36, 37 respectively. .

当无线电手机10发射信号时，由于射频信号的功率很强，因此功率放大器26、双工器24以及天线连接头22等功能单元易有溢出的射频噪声而构成辐射干扰，因此金属遮蔽物34、35、36、37的设置可以有效地改善功能单元之间的辐射干扰，维持无线电手机10接收信号的灵敏度。但金属遮蔽物34、35、36、37的设置提高了无线电手机10的生产成本，也增加了手机的重量。When the radio handset 10 transmits a signal, because the power of the radio frequency signal is very strong, functional units such as the power amplifier 26, the duplexer 24, and the antenna connector 22 are prone to overflow radio frequency noise and constitute radiation interference, so the metal shield 34, The settings of 35, 36, and 37 can effectively improve the radiation interference between the functional units and maintain the sensitivity of the radio handset 10 to receive signals. However, the setting of the metal shields 34, 35, 36, 37 increases the production cost of the radio handset 10, and also increases the weight of the handset.

除此之外，为降低无线电手机对外的辐射量并阻绝来自手机外部的辐射干扰，无线电手机10的前盖12与后盖14内侧涂镀一层薄的低阻抗金属层。当后盖14利用螺丝经由电路板20固接于前盖12时，后盖14内侧的金属层可借助螺丝与电路板20的接地层连接，以改善接地效果，避免手机内部的射频信号辐射至手机外侧，也防止手机外部的辐射干扰进入手机内部。In addition, in order to reduce the external radiation of the wireless mobile phone and block the radiation interference from the outside of the mobile phone, the inside of the front cover 12 and the rear cover 14 of the wireless mobile phone 10 are coated with a thin low-impedance metal layer. When the back cover 14 is fixedly connected to the front cover 12 via the circuit board 20 by screws, the metal layer on the inside of the back cover 14 can be connected to the ground layer of the circuit board 20 by screws to improve the grounding effect and prevent the radio frequency signal inside the mobile phone from radiating to the The outside of the phone also prevents radiation interference from the outside of the phone from entering the inside of the phone.

由于天线连接头22附近的射频信号很强，因此手机内部的射频信号很容易在后盖14内侧的金属层上产生大量的感应电流。由于后盖14内侧涂镀的金属层只通过螺丝接地，并无较大的接地面积，因此接地效果不佳，感应电流很可能会再产生辐射电磁场，进而干扰手机内部的各个功能单元。Since the radio frequency signal near the antenna connector 22 is very strong, the radio frequency signal inside the mobile phone can easily generate a large amount of induced current on the metal layer inside the rear cover 14 . Since the metal layer coated on the inner side of the back cover 14 is grounded only through screws and does not have a large grounding area, the grounding effect is not good, and the induced current is likely to generate a radiated electromagnetic field, and then interfere with each functional unit inside the mobile phone.

过多金属遮蔽物的设置势必将提高无线电手机的生产成本，也将增加无线电手机的重量，而壳体内侧金属层的接地良好与否，也会影响其阻绝电磁波的效果。如何在不牺牲手机各项性能表现的前提下，达到精简金属遮蔽物数量的目的，并强化壳体内侧金属层的接地效果，是设计无线电手机时非常重要的问题。The setting of too many metal shields will inevitably increase the production cost of the radio handset, and will also increase the weight of the radio handset, and whether the metal layer inside the casing is well grounded will also affect its effect of blocking electromagnetic waves. How to achieve the purpose of reducing the number of metal shields and strengthening the grounding effect of the metal layer inside the casing without sacrificing the performance of the mobile phone is a very important issue when designing a wireless mobile phone.

因此本发明的主要目的在于提供一种无线电手机，其电路板上的金属遮蔽物数目较少，却可以达到降低手机内部各功能单元之间辐射干扰现象的目的。本发明可以降低手机生产成本、减轻手机的重量、同时又不影响手机的性能表现。本发明的另一目的在于提供一种无线电手机，这种手机可以强化其后盖内部金属层的接地效果，以改善手机内部天线连接头附近的高功率电磁波干扰其它功能单元的问题。Therefore the main purpose of the present invention is to provide a kind of radio mobile phone, the number of metal shields on its circuit board is less, but can reach the purpose of reducing the radiation interference phenomenon between each functional unit inside the mobile phone. The invention can reduce the production cost of the mobile phone and lighten the weight of the mobile phone without affecting the performance of the mobile phone. Another object of the present invention is to provide a wireless mobile phone, which can strengthen the grounding effect of the metal layer inside the back cover, so as to improve the problem that the high-power electromagnetic waves near the antenna connector inside the mobile phone interfere with other functional units.

本发明的一种无线电手机，包含：一壳体，其包含两个可相互嵌合的前盖与后盖，所述后盖包含镀于其内侧的一金属层，用来防止所述手机内部的电磁波外泄或是外来的电磁干扰；一电路板，其安装于所述壳体之内，该电路板包含一板面，一设于所述板面上端的天线连接头；一天线，其安装所述壳体上端并与所述板面上端的所述天线连接头相互电连接，用来接收或发射无线电信号；以及一具有弹性的第一导电体，所述第一导电体固定于所述后盖内侧并与所述金属层相互电连接；在所述电路板的板面上另设有一凸起的第二导电体；其中，当所述前盖与所述后盖嵌合在一起时，所述第一导电体弹性地夹钳于所述后盖内侧的金属层与所述电路板的板面之间，所述后盖内侧的第一导电体弹性地触接于所述电路板板面上的第二导电体，以使所述后盖内侧的金属层、所述第一导电体及第二导电体、以及所述电路板的板面上端形成所述用来防止电磁波外泄的封包，用来将位于所述封包内的所述天线连接头所产生的电磁波屏蔽于所述封包内以避免其干扰所述无线电手机的位于所述封包外的其它电路。A radio mobile phone according to the present invention comprises: a casing, which includes two front covers and a back cover that can be fitted with each other, and the back cover includes a metal layer plated on its inner side, which is used to prevent the inside of the phone from leakage of electromagnetic waves or external electromagnetic interference; a circuit board, which is installed in the housing, the circuit board includes a board surface, an antenna connector located at the top of the board surface; an antenna, its Install the upper end of the housing and electrically connect with the antenna connector on the upper end of the board for receiving or transmitting radio signals; and a first elastic conductor fixed to the first conductor The inner side of the back cover is electrically connected with the metal layer; a raised second conductor is additionally provided on the surface of the circuit board; wherein, when the front cover and the back cover are fitted together , the first conductor is elastically clamped between the metal layer inside the back cover and the board surface of the circuit board, and the first conductor inside the back cover is elastically in contact with the circuit The second conductor on the board surface, so that the metal layer inside the back cover, the first conductor and the second conductor, and the top of the board surface of the circuit board form the The leaked packet is used to shield the electromagnetic wave generated by the antenna connector located in the packet in the packet to prevent it from interfering with other circuits of the radio mobile phone located outside the packet.

图1为现有无线电手机的示意图；Fig. 1 is the schematic diagram of existing radio handset;

图2为图1所示的无线电手机的侧视图；Figure 2 is a side view of the radio handset shown in Figure 1;

图3为图1所示的无线电手机的组成元件图；Fig. 3 is a component diagram of the radio handset shown in Fig. 1;

图4为图3所示的电路板沿A方向的示意图；Fig. 4 is a schematic diagram along the direction A of the circuit board shown in Fig. 3;

图5为本发明无线电手机的示意图；Fig. 5 is the schematic diagram of radio handset of the present invention;

图6为图5所示的无线电手机的电路板的示意图。FIG. 6 is a schematic diagram of a circuit board of the radio handset shown in FIG. 5. FIG.

图中符号说明：Explanation of symbols in the figure:

40无线电手机           41前盖40 radio handset 41 front cover

42壳体                    43后盖42 shell 43 back cover

44电路板                  45天线44 circuit boards 45 antennas

46条状导电体              48板面46 strip conductors 48 boards

50天线连接头              52双工器50 antenna connector 52 duplexer

54功率放大器              56射频接收电路54 power amplifier 56 radio frequency receiving circuit

58射频发射电路            60基频电路58 radio frequency transmitting circuit 60 base frequency circuit

62金属遮蔽物              64封包62 metal shields 64 packets

66螺丝孔66 screw holes

参阅图5及图6，图5为本发明无线电手机40的示意图，图6为图5所示的无线电手机40的电路板44的示意图。本发明无线电手机40包含壳体42，安装于壳体42内的电路板44，安装于壳体42上端的天线45，弹性的条状导电体46，以及凸起的金属遮蔽物62。壳体42包含两个可相互嵌合的前盖41与后盖43，后盖43包含镀于其内侧的一金属层，用来防止手机内部的电磁波外泄或是外来的电磁干扰。电路板44包含板面48、设于板面48上端的天线连接头50、设于板面48上并位于天线连接头50之下的功率放大器54、双工器52、射频接收电路56、射频发射电路58、以及基频电路60。天线45的下端设于壳体42内且与板面48上端的天线连接头50相互电连接，用来接收或发射无线电信号。条状导电体46固定于后盖43内侧并与后盖43内侧涂镀的金属层相互电连接，金属遮蔽物62则套装于功率放大器54之上用来屏蔽功率放大器54所产生的电磁波。Referring to FIG. 5 and FIG. 6 , FIG. 5 is a schematic diagram of the radio handset 40 of the present invention, and FIG. 6 is a schematic diagram of the circuit board 44 of the radio handset 40 shown in FIG. 5 . The radio handset 40 of the present invention includes a housing 42 , a circuit board 44 installed in the housing 42 , an antenna 45 installed on the upper end of the housing 42 , an elastic strip conductor 46 , and a raised metal shield 62 . The housing 42 includes two interfittable front covers 41 and a back cover 43 . The back cover 43 includes a metal layer plated on its inner side to prevent leakage of electromagnetic waves inside the mobile phone or external electromagnetic interference. The circuit board 44 includes a board surface 48, an antenna connector 50 located at the upper end of the board surface 48, a power amplifier 54 located on the board surface 48 and below the antenna connector 50, a duplexer 52, a radio frequency receiving circuit 56, a radio frequency The transmitting circuit 58, and the base frequency circuit 60. The lower end of the antenna 45 is disposed in the housing 42 and is electrically connected to the antenna connector 50 on the upper end of the board 48 for receiving or transmitting radio signals. The strip conductor 46 is fixed on the inner side of the rear cover 43 and is electrically connected to the metal layer coated on the inner side of the rear cover 43 . The metal shield 62 is set on the power amplifier 54 to shield the electromagnetic waves generated by the power amplifier 54 .

当前盖41与后盖43嵌合在一起时，后盖43内侧的条状导电体46与电路板板面48上的金属遮蔽物62弹性接触，以使后盖43内侧的金属层、条状导电体46、金属遮蔽物62以及电路板44的板面48上端形成防止电磁波外泄的封包64。封包64用来屏蔽位于封包64内的天线连接头50以及天线45下端所产生的电磁波，以避免这些电磁波干扰无线电手机40的位于封包64外的其它电路。When the front cover 41 and the back cover 43 were fitted together, the strip-shaped conductor 46 on the inside of the back cover 43 was in elastic contact with the metal shield 62 on the circuit board surface 48, so that the metal layer on the inside of the back cover 43, the strip-shaped The conductor 46 , the metal shield 62 and the upper end of the board surface 48 of the circuit board 44 form a package 64 to prevent electromagnetic waves from leaking out. The package 64 is used to shield the electromagnetic waves generated by the antenna connector 50 inside the package 64 and the lower end of the antenna 45 to prevent these electromagnetic waves from interfering with other circuits of the radio handset 40 outside the package 64 .

后盖43与电路板44另分别包含四个螺丝孔66，后盖43可利用螺丝经由电路板44固接于前盖41。当后盖43利用四个螺丝与前盖41固接时，由于条状导电体46具有弹性，因此条状导电体46会被弹性地夹钳于后盖43内侧金属层与金属遮蔽物62间，并与金属遮蔽物62形成电连接。此外，电路板44另包含一接地层(未显示)，金属遮蔽物62则电连接至电路板44的接地层，当后盖43利用四个螺丝与前盖41固接时，后盖43内侧的金属层可经由条状导电体46以及金属遮蔽物62接地。因此后盖43内侧金属层除了可借助螺丝接地外，也可以由条状导电体46接地。The back cover 43 and the circuit board 44 further include four screw holes 66 , and the back cover 43 can be fixed to the front cover 41 through the circuit board 44 by using screws. When the rear cover 43 is secured to the front cover 41 by four screws, the strip conductor 46 will be elastically clamped between the metal layer inside the rear cover 43 and the metal shield 62 due to the elasticity of the strip conductor 46 , and form an electrical connection with the metal shield 62 . In addition, the circuit board 44 further includes a ground layer (not shown), and the metal shield 62 is electrically connected to the ground layer of the circuit board 44. When the rear cover 43 is fastened to the front cover 41 by four screws, the inside of the rear cover 43 The metal layer can be grounded via the strip conductor 46 and the metal shield 62 . Therefore, the inner metal layer of the back cover 43 can be grounded by the strip conductor 46 in addition to being grounded by means of screws.

在本发明无线电手机40中，双工器52以及功率放大器54等主要的射频辐射干扰源利用金属遮蔽物62来防止电磁波外泄。金属遮蔽物62、条状导电体46、后盖43内侧的金属层、以及电路板的板面上端形成可防止电磁波外泄的封包64，而天线45下端以及天线连接头50等主要的射频辐射干扰源则位于封包64内部。金属遮蔽物62借助电路板44的接地层接地，条状导电体46借助金属遮蔽物62接地，后盖43内侧的金属层则借助条状导电体46、金属遮蔽物62接地，因此本发明的封包64接地，可以有效地防止封包64内部的射频辐射外泄。此外，当无线电手机40发射信号时，天线连接头50附近溢射大量的的电磁波，由于条状导电体46提供金属遮蔽物62与后盖43上的金属层电连接的桥梁，使后盖43内侧的金属层电连接于电路板44的接地层，改善了后盖43内侧金属层的接地状况，因此本发明可以有效地消除因天线连接头50附近溢射的电磁波而产生的感应电流。In the radio handset 40 of the present invention, the main radio frequency radiation interference sources such as the duplexer 52 and the power amplifier 54 use the metal shield 62 to prevent the electromagnetic waves from leaking out. The metal shield 62, the strip conductor 46, the metal layer on the inside of the back cover 43, and the upper top of the circuit board form a package 64 that can prevent electromagnetic waves from leaking out, while the main radio frequency radiation of the lower end of the antenna 45 and the antenna connector 50, etc. The source of interference is located inside the packet 64 . The metal shield 62 is grounded by the ground layer of the circuit board 44, the strip conductor 46 is grounded by the metal shield 62, and the metal layer inside the back cover 43 is grounded by the strip conductor 46 and the metal shield 62, so the present invention The package 64 is grounded, which can effectively prevent the leakage of radio frequency radiation inside the package 64 . In addition, when the radio handset 40 transmits a signal, a large amount of electromagnetic waves are spilled near the antenna connector 50. Since the strip conductor 46 provides a bridge for the metal shield 62 to be electrically connected to the metal layer on the back cover 43, the back cover 43 The inner metal layer is electrically connected to the ground layer of the circuit board 44, which improves the grounding condition of the inner metal layer of the back cover 43, so the present invention can effectively eliminate the induced current generated by the electromagnetic wave overflowing near the antenna connector 50.

无线电手机40的主要辐射干扰源中，由于双工器52、功率放大器54被金属遮蔽物62屏蔽，并且天线连接头50所产生的电磁波被屏蔽于封包64内。这些主要辐射干扰源受到屏蔽而避免干扰其它电路，因此本发明的无线电手机40可省略射频发射电路58，射频接收电路56、以及基频电路60的金属遮蔽物的设置，也就是可以在不牺牲各项性能表现的前提下，达到精简金属遮蔽物数量的目的，进而降低无线电手机50的重量、厚度与成本。Among the main radiation interference sources of the radio handset 40 , the duplexer 52 and the power amplifier 54 are shielded by the metal shield 62 , and the electromagnetic waves generated by the antenna connector 50 are shielded in the package 64 . These main sources of radiation interference are shielded to avoid interfering with other circuits, so the wireless handset 40 of the present invention can omit the radio frequency transmitting circuit 58, the setting of the metal shield of the radio frequency receiving circuit 56 and the base frequency circuit 60, that is, without sacrificing Under the premise of various performances, the purpose of reducing the number of metal shields is achieved, thereby reducing the weight, thickness and cost of the wireless handset 50 .

条状导电体46可由一柔性金属网包裹于一条状橡胶之外而形成。而条状导电体46可以固定于后盖43内侧，也可以设置于电路板44上的金属遮蔽物62上，当前盖41与后盖43嵌合在一起时，条状导电体46可被弹性地夹钳于后盖43内侧的金属层与金属遮蔽物62之间，而使金属遮蔽物62、条状导电体46、后盖43内侧的金属层、以及电路板的板面上端形成封包64。封包64并不需要完全密闭，只要对电磁波而言为密闭且电磁波无法外泄即可。The strip conductor 46 can be formed by wrapping a flexible metal mesh outside a strip of rubber. The strip conductor 46 can be fixed on the inner side of the rear cover 43, or can be arranged on the metal shield 62 on the circuit board 44. When the front cover 41 and the rear cover 43 are fitted together, the strip conductor 46 can be elastically The ground is clamped between the metal layer inside the back cover 43 and the metal shield 62, so that the metal shield 62, the strip conductor 46, the metal layer inside the back cover 43, and the top of the circuit board form a package 64 . The package 64 does not need to be completely airtight, as long as it is airtight against electromagnetic waves and the electromagnetic waves cannot leak out.

本发明的无线电手机40具有两个导电体，第一导电体为固定于后盖43内侧的条状导电体46，第二导电体则为套装于功率放大器54之上的金属遮蔽物62。除了上述的实施例之外，条状导电体46与金属遮蔽物62也可以制作成一具有弹性的导电体，当前盖41与后盖43嵌合在一起时，这一导电体会弹性地夹钳于后盖43内侧的金属层与板面48之间。而后盖43内侧的金属层、板面48上端以及这一导电体则会形成一可防止电磁波外泄的封包，用来将位于封包内的天线连接头50所产生的电磁波屏蔽于封包内，以避免这些电磁波干扰无线电手机的位于封包外的其它电路。The radio handset 40 of the present invention has two conductors, the first conductor is a strip conductor 46 fixed inside the rear cover 43 , and the second conductor is a metal shield 62 set on the power amplifier 54 . In addition to the above-mentioned embodiments, the strip-shaped conductor 46 and the metal shield 62 can also be made into an elastic conductor. When the front cover 41 and the rear cover 43 are fitted together, this conductor will be clamped elastically Between the metal layer inside the back cover 43 and the board surface 48 . And the metal layer inside the back cover 43, the upper end of the plate surface 48 and this conductor will form a package that can prevent electromagnetic waves from leaking out, and is used to shield the electromagnetic waves generated by the antenna connector 50 in the package in the package, so as to Avoid these electromagnetic waves from interfering with other circuits of the radio handset located outside the package.

与现有的无线电手机10相比，本发明的无线电手机40利用后盖43内侧的金属层、条状导电体46、与功率放大器54上的金属遮蔽物62相触接而形成封包64，使天线连接头50位于封包64内部，从而使天线连接头50所产生的电磁波屏蔽于封包64内，因此可以避免电磁波干扰位于封包64外的其它电路。并且，本发明的条状导电体46可以改善后盖43内侧金属层的接地状况，因此本发明可以有效地消除因天线连接头50附近溢射的电磁波而产生的感应电流。Compared with the existing radio handset 10, the radio handset 40 of the present invention utilizes the metal layer inside the back cover 43, the strip conductor 46, and the metal shield 62 on the power amplifier 54 to contact to form a package 64, so that The antenna connector 50 is located inside the package 64 , so that the electromagnetic wave generated by the antenna connector 50 is shielded in the package 64 , so that the electromagnetic wave can be prevented from interfering with other circuits located outside the package 64 . Moreover, the strip-shaped conductor 46 of the present invention can improve the grounding condition of the metal layer inside the back cover 43 , so the present invention can effectively eliminate the induced current generated by the electromagnetic wave overflowing near the antenna connector 50 .

以上所述仅为本发明的较佳实施例，凡是在所附权利要求书所限定的本发明的范围内所做的各种变化与修改，都应属本发明专利的包含范围。The above descriptions are only preferred embodiments of the present invention, and all changes and modifications made within the scope of the present invention as defined by the appended claims shall fall within the scope of the patent of the present invention.

Claims (7)

1. mobile radio telephone comprises:
One housing, it comprises two can chimeric mutually protecgulum and bonnet, and described bonnet comprises a metal level that is plated on its inboard, is used for preventing that the electromagnetic wave of described mobile phone inside from leaking or external electromagnetic interference;
One circuit board, it is installed within the described housing, and this circuit board comprises a plate face, and one is located at the antenna connector of described plate face upper end;
One antenna, it is installed described housing upper end and is electrically connected mutually with the described antenna connector of described plate face upper end, is used for receiving or transmitted radio signal; And
One rubber-like, first electric conductor, described first electric conductor are fixed in described bonnet inboard and are electrically connected mutually with described metal level;
On the plate face of described circuit board, be provided with second electric conductor of a projection in addition;
Wherein, when described protecgulum and described bonnet are entrenched togather, described first electric conductor flexibly clamp between the plate face of the metal level of described bonnet inboard and described circuit board, first electric conductor of described bonnet inboard flexibly touches second electric conductor on described circuit board plate face, so that the metal level of described bonnet inboard, described first electric conductor and second electric conductor, and the plate face of described circuit board upper end forms described being used for and prevents the package that electromagnetic wave leaks, and the electromagnetic wave shielding that the described antenna connector that is used for being positioned at described package is produced disturbs other circuit outside the described package of being positioned at of described mobile radio telephone in described package to avoid it.
2. mobile radio telephone as claimed in claim 1, wherein said circuit board comprises a power amplifier in addition, it is located on the described plate face and is positioned under the described antenna connector, and described second electric conductor is a metal veil, it is set on the described power amplifier, is used for shielding the electromagnetic wave that described power amplifier produces.
3. mobile radio telephone as claimed in claim 1, the lower end of wherein said antenna is located in the described housing and is positioned at described package, and described package can prevent that then the described mobile radio telephone of Electromagnetic Interference that described antenna connector and described antenna lower end are produced is positioned at other outer circuit of described package.
4. mobile radio telephone as claimed in claim 1, wherein said circuit board is installed on the inboard of described protecgulum, when described protecgulum and bonnet are entrenched togather, described first electric conductor flexibly clamp between the plate face of the metal level of described bonnet inboard and described circuit board.
5. mobile radio telephone as claimed in claim 1, wherein said first electric conductor are a rubber-like strip electric conductor, are used for flexibly touching mutually to form described package with described circuit board.
6. mobile radio telephone as claimed in claim 5, wherein said strip electric conductor is wrapped in outside the strip rubber by a flexible metal net and forms.
7. mobile radio telephone as claimed in claim 1, wherein said circuit board comprises a ground plane, and the metal level of described bonnet is electrically connected on described ground plane, so that described package ground connection.
CN 99102265 1999-02-14 1999-02-14 radio handset Expired - Fee Related CN1114309C (en)

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JP2003143274A (en) 2001-11-07 2003-05-16 Nec Access Technica Ltd Portable radio terminal equipment
JP3719510B2 (en) * 2002-04-08 2005-11-24 アルプス電気株式会社 Storage room with contactless charger
KR100565324B1 (en) * 2004-05-15 2006-03-30 엘지전자 주식회사 FPC ratio of camera for mobile communication terminal
US8024016B2 (en) 2006-07-18 2011-09-20 Lg Electronics Inc. Portable electronic device
KR101048169B1 (en) * 2006-07-19 2011-07-08 엘지전자 주식회사 Handheld terminal
DE102007002900B4 (en) 2006-07-19 2014-10-23 Lg Electronics Inc. mobile phone
CN101729087A (en) * 2008-10-21 2010-06-09 深圳富泰宏精密工业有限公司 Wireless communication device
CN202068457U (en) * 2011-05-18 2011-12-07 中兴通讯股份有限公司 Mobile terminal

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