Frequency modulation (FM) antenna implementation device and mobile terminal

An antenna and FM signal technology, which is applied in the field of mobile communications, can solve the problem of FM antenna occupying a large space and achieve miniaturization design, improve user experience, and overcome the effect of occupying a large space

Active Publication Date: 2012-08-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a FM antenna implementation device and a mobile terminal to overcome the defect that the existing built-in standard FM antenna occupies a relatively large space in the mobile terminal

Method used

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  • Frequency modulation (FM) antenna implementation device and mobile terminal
  • Frequency modulation (FM) antenna implementation device and mobile terminal
  • Frequency modulation (FM) antenna implementation device and mobile terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In this embodiment, a flexible printed circuit board (FPC) is used as an FM antenna built into the mobile terminal. The FPC may be an FPC with electrical characteristics in the mobile terminal, that is, an FPC as a part of a circuit, and it is not excluded that an FPC is separately designed as an FM antenna.

[0032] figure 1 It is a schematic structural diagram of the built-in FM antenna device of this embodiment. In this embodiment, the FPC between the LED lamp circuit and the LED lamp is multiplexed as an FM antenna. In other embodiments, the FPC used for other electrical functions may also be multiplexed as an FM antenna. Such as figure 1 As shown, one end of the metal trace on the circuit board (FPC) connected to the ground and / or power supply is connected to the isolation device and the matching circuit 120, the isolation device and the matching circuit are connected in parallel, and the other end of the isolation device is grounded and / or power supply; FPC ( S...

Embodiment 2

[0042] In this embodiment, a PCB (printed circuit board) is used instead of the FPC in Embodiment 1 to realize FM reception. image 3 It is a schematic diagram of the position of the PCB in the mobile terminal 300 using the PCB as the built-in FM antenna. What is described in this schematic diagram is a mobile terminal 300 with an FM external speaker function. The FM antenna 310 of its PCB (printed circuit board) material is located in a region 320 in the middle of the mobile terminal, and is connected to the main board of the mobile terminal through the spring pins. . The FM antenna 310 made of PCB is disposed in the middle of the mobile terminal 300 , and there is a large space available for receiving FM signals. In addition, there is a main board of the mobile terminal 300 under the FM antenna 310, and the electrical connection between the main board and the main board is relatively easy. In fact, it is also possible for the FM antenna 310 to be arranged on the upper and ...

Embodiment 3

[0046] In this embodiment, the FM antenna made of FPC is also used as the FM antenna built into the mobile terminal. In this embodiment, the FM antenna made of FPC is built into the mobile terminal and preferably follows a setting principle, which can be set by Figure 4a and 4b It can be visualized, specifically:

[0047] Once the length of the FM antenna area made of FPC material is greater than the width, the routing direction of the serpentine line is along the length direction, and the width needs to be considered only when the length is guaranteed to be the longest. It is a design principle to make the FM antenna as long as possible rather than wide. The design of FM antennas with irregular patterns should also follow this principle. Figure 4a and Figure 4b The schematic diagrams of two FM antenna layouts are respectively shown. In the two layouts, the long side of the FM antenna area is the length direction of the FM.

[0048] This principle can also be followed ...

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Abstract

The invention discloses a frequency modulation (FM) antenna implementation device and a mobile terminal, which overcome the defect that the conventional built-in standard component, namely the FM antenna, occupies a relatively large space in the mobile terminal. The FM antenna implementation device comprises a circuit board comprising a metal line, an isolation component and a matching circuit, wherein one end connected with the ground and / or a power supply of the metal line on the circuit board is connected with the isolation component and the matching circuit, the isolation component is connected with the matching circuit in parallel, and the other end of the isolation component is connected with the ground and / or the power supply; the circuit board comprising the metal line serves as a FM antenna to receive FM signals; the isolation component is used for isolating the FM signals; and the matching circuit is used for filtering the FM signals received by the circuit board and outputting the filtered FM signals. According to the invention, as the FM signal receiving antenna with the circuit board comprising the metal line serving as the mobile terminal is adopted, the defect that the conventional built-in standard component, namely the antenna, occupies the relatively large space is overcome, the miniaturization design of the mobile terminal is realized, and an FM external playing function is realized.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a device for realizing a frequency modulation (FM) antenna and a mobile terminal integrating the device. Background technique [0002] A frequency modulation (FM) function is a standing function of a mobile terminal at present. At present, earphones are usually used as FM antennas on mobile terminals to receive FM signals. For the mobile terminal, the earphone is not an essential component to realize most of the main functions of the mobile terminal, and one of the conditions for receiving FM signals through the earphone as an FM antenna is to keep the earphone and the mobile terminal effectively connected at all times. Therefore, the inconvenience of carrying the earphone will greatly reduce the willingness of the user to use the FM broadcast function, and also increase the difficulty for the user to receive the FM signal through the mobile terminal. [0003] There are also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/24H01Q1/38H01Q1/44H04B1/38
CPCH01Q1/243H01Q1/36
Inventor 何文卿
Owner ZTE CORP
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