KR20000014205U - Mobile communication terminal with down antenna - Google Patents

Abstract

end. TECHNICAL FIELD OF THE INVENTION

An antenna device of a mobile communication terminal.

I. The technical problem that the invention is trying to solve

An antenna device is connected to one side of a lower end of a mobile communication terminal.

All. Summary of solution of design

In the mobile communication terminal, characterized in that consisting of a main body having a transmission and reception separation device at the bottom inside, and an antenna connected to the transmission and reception separation device at the bottom surface of the main body.

la. Important uses of the devise

Used for mobile communication terminal.

Description

Mobile communication terminal with down antenna

The present invention relates to an antenna of a mobile communication terminal, and more particularly, to an antenna device of a mobile communication terminal having a downward antenna for connecting the position of the antenna to the lower side of the main body of the mobile communication terminal.

FIG. 1A illustrates an external front view of a general mobile communication terminal. FIG. 1B is a diagram illustrating an internal configuration of a general mobile communication terminal and connection of an antenna. FIG. 1C is an antenna radiation pattern diagram of a general mobile communication terminal.

Referring to the drawings, reference numeral 10 denotes a main body of a mobile communication terminal, 1 is a speaker, 3 is a liquid crystal display (LCD), 5 is a keypad, and 7 is a microphone. to be. 1A and 1B, the antenna 20 of a general mobile communication terminal is located at the top of the mobile communication terminal. That is, the antenna 20 is located at the top by the stereotype that it should be placed upward. In FIG. 1B, the transmitter 31, the receiver 33, and the transmitter / receiver separator 35 are preferably installed close to the antenna 20. However, the transmitter 31, the receiver 33, and the transmitter / receiver separator 35 are located farthest from the speaker 1, which is a part which contacts the human body due to heat generated by the power amplifier (not shown) of the transmitter 31. It is located at the bottom of the mobile communication terminal. The antenna 20 is connected to the transmission / reception separator 35 through a coaxial line 21 and is connected to the transmitter 31 and the receiver 33 through the transmission / reception separator 35. The coaxial line 21 is composed of a center conductor 23 and an external conductor 21. The coaxial line 21 is configured through a printed circuit board (PCB).

Therefore, the connection between the antenna 20 and the transmit / receive separator 35 using a printed wiring board results in enormous insertion loss, requiring a higher output power amplifier and a lower noise amplifier (not shown), resulting in lower insertion loss. There was a problem to introduce the coaxial line. Since the introduction of the coaxial line is performed by hand, there is a problem in that the productivity and the cost increase. On the other hand, since the antenna has a radiation pattern as shown in FIG. 1C, since the antenna is connected to the top, there is a problem in that the electromagnetic waves emitted most affect the human brain. In addition, the antenna is frequently operated during a call, but when the antenna is in the position of the speaker, the call is difficult to operate during the call and has to be separated from the human body.

Accordingly, the present invention is to provide a mobile communication terminal having a down antenna that can reduce the electromagnetic damage generated from the antenna by installing the antenna position of the mobile communication terminal at the bottom of the main body of the mobile communication terminal.

In order to achieve the above object, the present invention is characterized in that the mobile communication terminal, consisting of a main body having a transmission and reception separation device at the bottom inside, and an antenna connected to the transmission and reception separation device at one side of the bottom of the main body.

Figure 1a is a front view of a typical mobile communication terminal.

Figure 1b is a diagram showing the connection between the internal configuration of the general mobile communication terminal and the antenna.

Figure 1c is an antenna radiation pattern diagram of a typical mobile communication terminal.

2 is a front view of a mobile communication terminal having a down antenna according to an embodiment of the present invention;

Figure 3 is a view showing the internal configuration and antenna connection of a mobile communication terminal having a down antenna according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. And in describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is an external front view of a mobile communication terminal according to an embodiment of the present invention, Figure 3 is a view showing the internal configuration and the antenna connection according to an embodiment of the present invention.

Antenna 30 according to the present invention is connected to one side of the lower surface of the mobile communication terminal main body 10 as shown in FIG. Since the antenna 30 is connected to one side of the lower end of the main body 10 of the mobile communication terminal, the antenna 30 is internally connected to the transceiver 37 located at the lower end of the inside of the main body 10 of the mobile communication terminal. As shown in FIG. 3, since the antenna 30 is connected to one side of the bottom surface, it can be seen that the antenna 30 and the transmitter / receiver separator 37 have a shorter coaxial line 35 formed of a center conductor 33 and an external conductor 35 connected through a PCB. Therefore, the insertion loss due to the coaxial line 35 can be reduced by a maximum of 0.5Db in a power amplifier (not shown) and a low noise amplifier (not shown). In addition, the down antenna 30 is directed to the lower part of the user's chin during a call, and is far from the user's brain.

Therefore, the present invention reduces the insertion loss between the antenna and the transmission and reception separator by eliminating the connection work between the antenna and the transmission and reception separation period, which are connected by hand, and improves the transmission output and reception sensitivity, and improves the mass production. There is an advantage.

In addition, the present invention has an advantage that the electromagnetic wave emitted from the antenna does not directly reach the human brain because the antenna is located on the bottom surface can reduce the human damage caused by the electromagnetic wave.

In addition, the present invention has the advantage that the operation of the antenna during the call is convenient because the antenna is located on the bottom surface.

Claims (2)

In the mobile communication terminal, A main body including a speaker, a liquid crystal display device, a keypad and a microphone, A mobile communication terminal having a down antenna, characterized in that consisting of an antenna connected to the lower surface of the main body. In the mobile communication terminal, A main body having a transmitting / receiving separating device at an inner lower end thereof, Mobile communication terminal having a down antenna, characterized in that consisting of an antenna connected to the transmission and reception separation device on the lower surface of the main body.