Antenna with FPC combined with metal frame and communication equipment

Abstract

The utility model relates to an antenna with an FPC combined with a metal frame and communication equipment. The antenna comprises an FPC antenna and an outer frame made of a metal material, the FPC antenna is provided with a feeding point, a ground feeding point and a first radiator, and the FPC antenna is made of a flexible circuit board; the FPC antenna is indirectly coupled with the outer frame, and the outer frame serves as a second radiator of the antenna. According to the antenna and the communication equipment provided by the utility model, under the condition that the space environment of the equipment is relatively poor, a long-distance signal transmission effect can be realized by only depending on a single antenna, an enhanced electromagnetic field is generated by coupling the FPC antenna and the metal outer frame, the direction and the distance of signal transmission are further increased, and the antenna meets the transmission distance requirement of a Bluetooth antenna.

Description

Technical Field

[0001] The utility model relates to the technical field of communication, in particular to an antenna and communication equipment combining an FPC with a metal frame. Background Art

[0002] Antenna is a kind of converter, which converts the guided wave propagating on the transmission line into electromagnetic wave propagating in the unbounded medium, or vice versa. It is a component used to transmit or receive electromagnetic waves in radio equipment. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasures, remote sensing, radio astronomy, etc., all of which use electromagnetic waves to transmit information, rely on antennas to work.

[0003] However, for some precision communication equipment, their structure is compact and the spatial environment is poor. The available layout space is extremely limited. Ordinary antenna structures cannot achieve long-distance effects. There are certain limitations in the electromagnetic field signal size, transmission direction and distance, which greatly affects the effect of signal transmission. Utility Model Content

[0004] Based on this, it is necessary to provide an antenna and communication device combining an FPC with a metal frame to address the problems that existing antennas require a large space and have poor signal transmission effects.

[0005] On the one hand, the utility model proposes an antenna of FPC combined with a metal frame, comprising an FPC antenna and an outer frame made of a metal material; the FPC antenna is provided with a feeding point, a feeding point and a first radiator, and the FPC antenna is made of a flexible circuit board; the FPC antenna is indirectly coupled to the outer frame, with the outer frame serving as the second radiator of the antenna, and the FPC antenna is also provided with a radiation slot.

[0006] Furthermore, the feeding point is defined with a first direction and a second direction opposite to the first direction; the first radiator and the radiation slot are both arranged in the first direction of the feeding point; the feeding point is arranged in the second direction of the feeding point. The first radiator is a U-shaped extension structure. The radiation slot is a rectangular slot structure concave inward from one end of the flexible circuit board.

[0007] Furthermore, the radiation slot generates an operating frequency band with a frequency range between 2400 MHz and 2480 MHz. The first radiator generates an operating frequency band with a frequency range between 2400 MHz and 2480 MHz.

[0008] Furthermore, the feed point is copper-clad on both sides and is electrically connected to the ground point of the circuit board through a screw column. The outer frame is made of alloy material.

[0009] On the other hand, the utility model further proposes a communication device, comprising the FPC combined with the metal frame antenna as described above, wherein the outer frame serves as a metal middle frame of the communication device.

[0010] The antenna and communication equipment provided by the utility model can achieve long-distance signal transmission effect by relying on a single antenna only when the equipment space environment is poor. It utilizes the coupling of the FPC antenna and the metal outer frame to generate an enhanced electromagnetic field, thereby increasing the direction and distance of signal transmission. The frequency band that the antenna can cover is from 2400MHz to 2480MHz, and meets the transmission distance requirements of Bluetooth antennas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of an embodiment of an FPC combined with a metal frame of the utility model;

[0012] Figure 2 This is a structural schematic diagram of another embodiment of an FPC combined with a metal frame of the utility model;

[0013] Figure 3 This is a standing wave return loss impedance diagram of another embodiment of an FPC combined with a metal frame of the utility model.

[0014] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0015] 11. Feeding point; 12. Feeding point; 13. First radiator; 14. Radiation slot. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the specific details described below are only part of the embodiments of the utility model, and the utility model can also be implemented in many other embodiments different from those described here. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model.

[0017] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0019] In one embodiment, see Figure 1 and 3 As shown, this embodiment proposes an antenna of FPC combined with a metal frame, including an FPC antenna and an outer frame made of metal material; a feeding point 11, a feeding point 12 and a first radiator 13 are provided on the FPC antenna, and the FPC antenna is made of a flexible circuit board; the FPC antenna is indirectly coupled to the outer frame, and the outer frame is used as the second radiator of the antenna, and a radiation slot 14 is also provided on the FPC antenna.

[0020] The antenna and communication equipment provided by the utility model can achieve long-distance signal transmission effect by relying on a single antenna only when the equipment space environment is poor. It utilizes the coupling of the FPC antenna and the metal outer frame to generate an enhanced electromagnetic field, thereby increasing the direction and distance of signal transmission. The frequency band that the antenna can cover is from 2400MHz to 2480MHz, and meets the transmission distance requirements of Bluetooth antennas.

[0021] Based on the embodiment of the utility model, the feeding point 11 is defined with a first direction and a second direction opposite to the first direction; the first radiator 13 and the radiation slot 14 are both arranged in the first direction of the feeding point 11; and the feeding point 12 is arranged in the second direction of the feeding point 11. The first radiator 13 is a U-shaped extension structure. The radiation slot 14 is a rectangular slot structure concave inward from one end of the flexible circuit board.

[0022] Specifically, the radiation slot 14 generates an operating frequency band ranging from 2400 MHz to 2480 MHz. The first radiator 13 generates an operating frequency band ranging from 2400 MHz to 2480 MHz.

[0023] In this embodiment, the feed point 12 is copper-clad on both sides and is electrically connected to the ground point of the circuit main board through screws, and the outer frame is made of alloy material.

[0024] In another embodiment of the utility model, the FPC combined with metal frame antenna includes: a feeding point 11 as an excitation, a feeding point 12 on the GND of the main board window where the screw column is located through a double-sided copper cladding process, a first radiator 13 for controlling the length of the antenna, and a radiation slot 14 whose slot depth affects the waveform depth and length of the antenna.

[0025] In addition, the antenna also includes an outer frame as the second radiator. The outer frame is made of alloy material and indirectly couples the internal FPC antenna, which controls the length of the antenna and the depth of the waveform. It can be understood that since the radiator is large and has a three-dimensional structure, the radiation direction and area are increased, which improves the overall performance of the antenna.

[0026] See attached Figure 2 As shown, in this embodiment, the size of a is 16.15mm, the size of b is 9.4mm, and the size of c is 5.2mm to achieve the antenna coverage frequency of 2400MHz to 2480MHz; the error range of the above dimensions is ±0.15mm. Of course, the above dimensions can be other, which is not limited to the description in this embodiment.

[0027] The utility model discloses an antenna structure with an internal FPC antenna coupled to an external metal middle frame. The structure mainly utilizes the enhanced electromagnetic field generated by the coupling of the FPC antenna and the metal middle frame to increase the signal transmission direction and distance when the environment is poor and a single antenna cannot achieve a long-distance effect. The frequency band that the antenna can cover is from 2400MHz to 2480MHz, and meets the transmission distance requirements of Bluetooth antennas.

[0028] On the other hand, the utility model also proposes a communication device, including the above FPC combined with a metal frame antenna, and the outer frame serves as a metal middle frame of the communication device.

[0029] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications, substitutions and improvements can be made without departing from the concept of the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be based on the claims.

Claims

1. An antenna with FPC combined with a metal frame, characterized in that: It comprises an FPC antenna and an outer frame made of metal material; the FPC antenna is provided with a feeding point, a feeding point and a first radiator, and the FPC antenna is made of a flexible circuit board; the FPC antenna is indirectly coupled to the outer frame, and the outer frame is used as the second radiator of the antenna.

2. The FPC combined with metal frame antenna according to claim 1, characterized in that: The FPC antenna is also provided with a radiation slot.

3. The FPC combined with metal frame antenna according to claim 2, characterized in that: The feeding point is defined with a first direction and a second direction opposite to the first direction; the first radiator and the radiation slot are both arranged in the first direction of the feeding point; and the feeding point is arranged in the second direction of the feeding point.

4. The FPC combined with metal frame antenna according to claim 3, characterized in that: The first radiator is a U-shaped extended structure.

5. The FPC combined with metal frame antenna according to claim 3, characterized in that: The radiation slot is a rectangular slot structure concave inward from one end of the flexible circuit board.

6. The FPC combined with metal frame antenna according to claim 2, characterized in that: The radiating slot generates an operating frequency band ranging from 2400 MHz to 2480 MHz.

7. The FPC combined with metal frame antenna according to claim 2, characterized in that: The first radiator generates an operating frequency band ranging from 2400 MHz to 2480 MHz.

8. The FPC combined with metal frame antenna according to claim 1, characterized in that: The feed point is copper-clad on both sides and is electrically connected to the grounding point of the circuit main board through a screw column.

9. The FPC combined with metal frame antenna according to claim 1, characterized in that: The outer frame is made of alloy material.

10. A communication device, characterized in that: An antenna comprising an FPC combined with a metal frame as described in any one of claims 1 to 9, wherein the outer frame serves as a metal middle frame of the communication device.

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