CN110854518B

CN110854518B - 4G communication radio frequency antenna system

Info

Publication number: CN110854518B
Application number: CN201911160422.4A
Authority: CN
Inventors: 颜乾海; 颜石珊
Original assignee: Shenzhen Dongxintong Electronic Technology Co ltd
Current assignee: Shenzhen Dongxintong Electronic Technology Co ltd
Priority date: 2019-11-23
Filing date: 2019-11-23
Publication date: 2021-11-12
Anticipated expiration: 2039-11-23
Also published as: CN110854518A

Abstract

A4G communication radio frequency antenna system comprises a lower radiation piece, an upper radiation piece, a translation mechanism and a PCBA board; the translation mechanism comprises a micro motor, a belt and a linkage shaft, the belt is wound on an output shaft of the micro motor and the linkage shaft, the PCBA is fixed on the belt, the upper radiation piece is fixed on the lower surface of the PCBA, and the lower radiation piece is located right below the upper radiation piece and forms a gap with the upper radiation piece; the PCBA board is provided with a feed-in end and a grounding end, the feed-in end is electrically connected with the upper radiation piece, and the lower radiation piece is electrically connected with the grounding end; compared with the prior art, the invention has the beneficial effects that: the upper radiation sheet is driven by the translation mechanism to do translation motion relative to the lower radiation sheet, so that the effective facing area formed between the lower radiation sheet and the upper radiation sheet is changed, the adjustment of high-frequency resonance frequency points is realized, and the coverage range of a frequency band is effectively increased.

Description

4G communication radio frequency antenna system

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of communication, in particular to a 4G communication radio frequency antenna system.

[ background of the invention ]

An antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium (usually free space) or vice versa. A component for transmitting or receiving electromagnetic waves in a radio device. Engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy and the like all use electromagnetic waves to transmit information and work by depending on antennas.

However, the application of the antenna in electronic products has many disadvantages, and in communication terminal products, such as mobile phone products, on one hand, due to the popularity of metal frames or housings, shielding properties may be generated on wireless communication signals, which affects mobile phone signals, and on the other hand, each antenna can only cover a certain high-frequency resonance frequency point corresponding to a certain resonance mode or several resonance modes, and cannot simultaneously cover a certain range of high-frequency resonance frequency points.

In view of the above, it is desirable to provide a 4G communication rf antenna system to overcome the deficiencies of the prior art.

[ summary of the invention ]

The invention aims to provide a 4G communication radio frequency antenna system, which drives an upper radiation sheet to do translational motion relative to a lower radiation sheet through a translation mechanism, changes the effective facing area formed between the lower radiation sheet and the upper radiation sheet, further realizes the adjustment of a high-frequency resonance frequency point, and effectively increases the coverage range of a frequency band.

In order to achieve the above object, the present invention provides a 4G communication rf antenna system, which includes a lower radiation plate, an upper radiation plate, a translation mechanism and a PCBA board;

the translation mechanism comprises a micro motor, a belt and a linkage shaft, the belt is wound on an output shaft of the micro motor and the linkage shaft, the PCBA is fixed on the belt, the upper radiation piece is fixed on the lower surface of the PCBA, and the lower radiation piece is located right below the upper radiation piece and forms a gap with the upper radiation piece; the PCBA board is provided with a feed-in end and a grounding end, the feed-in end is electrically connected with the upper radiation piece, and the lower radiation piece is electrically connected with the grounding end.

In a preferred embodiment, the length of the lower radiation plate is greater than the length of the upper radiation plate, and the width of the lower radiation plate is equal to the width of the upper radiation plate.

In a preferred embodiment, the lower radiation sheet and the upper radiation sheet are made of copper sheets.

In a preferred embodiment, the PCBA board further includes an input matching circuit and an output matching circuit, the feed terminal is electrically connected to the upper radiating plate through the input matching circuit, and the lower radiating plate is electrically connected to the ground terminal through the output matching circuit.

In a preferred embodiment, a thermally conductive and insulating layer is provided between the upper radiating patch and the PCBA board.

In a preferred embodiment, the 4G communication rf antenna system further comprises a handset housing, and the lower radiation sheet is integrally disposed with the handset housing.

Compared with the prior art, the 4G communication radio frequency antenna system provided by the invention has the beneficial effects that: the upper radiation sheet is driven by the translation mechanism to do translation motion relative to the lower radiation sheet, so that the effective facing area formed between the lower radiation sheet and the upper radiation sheet is changed, the adjustment of high-frequency resonance frequency points is realized, and the coverage range of a frequency band is effectively increased.

[ description of the drawings ]

Fig. 1 is an exploded view of a 4G communication rf antenna system provided in the present invention.

Fig. 2 is a cross-sectional structural diagram of the 4G communication rf antenna system shown in fig. 1.

Fig. 3 is an enlarged view of the area a shown in fig. 2.

Fig. 4 is a circuit connection diagram of the 4G communication rf antenna system shown in fig. 1.

Fig. 5 is a cross-sectional structural diagram of the 4G communication rf antenna system shown in fig. 2 in another state.

[ detailed description ] embodiments

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, a 4G communication rf antenna system 100 is provided.

In the embodiment of the present invention, the 4G communication rf antenna system 100 includes a lower radiation plate 10, an upper radiation plate 20, a translation mechanism 30 and a PCBA board 40.

Specifically, referring to fig. 2 to 4, the translation mechanism 30 includes a micro motor 31, a belt 32 and a linkage shaft 33, the belt 32 is wound around an output shaft of the micro motor 31 and the linkage shaft 33, the PCBA board 40 is fixed on the belt 32, the upper radiation sheet 20 is fixed on the lower surface of the PCBA board 40, and the lower radiation sheet 10 is located right below the upper radiation sheet 20 and forms a gap with the upper radiation sheet 20; the PCBA board 40 is provided with a feeding end 41 and a grounding end 42, the feeding end 41 is electrically connected to the upper radiation piece 20, and the lower radiation piece 10 is electrically connected to the grounding end 42.

It can be understood that the feeding terminal 41 on the PCBA board 40 is used for feeding a current signal to the upper radiation plate 20, the current signal is fed to the lower radiation plate 10 through the gap formed between the lower radiation plate 10 and the upper radiation plate 20 by capacitive coupling, the current signal on the lower radiation plate 10 forms a current loop in the form of ground through the ground terminal 42, and then a current a1 can be formed, and a high-frequency resonant frequency point X1 corresponding to a resonant mode is generated. The translating mechanism 30 is configured to drive the upper radiation sheet 20 to perform a translating motion, that is, when the micro motor 31 is driven, the belt 32 may drive the upper radiation sheet 20 to move rightward, and in a moving process, a gap distance formed between the lower radiation sheet 10 and the upper radiation sheet 20 is not changed, but a current sum formed is gradually reduced due to a reduction in an effective facing area of a capacitor plate formed between the lower radiation sheet 10 and the upper radiation sheet 20, and when the facing area of the effective capacitor plate formed between the lower radiation sheet 10 and the upper radiation sheet 20 is infinitely close to zero, please refer to fig. 5, a current a2 may be formed at this time, a high-frequency resonant frequency point X2 corresponding to a generated resonant mode, and a current a2 and a high-frequency resonant frequency point X2 at this time also infinitely close to zero. Therefore, the adjustment of any high-frequency resonant frequency point within a certain range is realized, and the coverage frequency band range of the 4G communication radio frequency antenna system 100 is effectively increased.

Further, the length of the lower radiation piece 10 is greater than the length of the upper radiation piece 20, and the width of the lower radiation piece 10 is equal to the width of the upper radiation piece 20. Furthermore, the lower radiation plate 10 and the upper radiation plate 20 are made of copper sheets.

Further, an input matching circuit 43 and an output matching circuit 44 are further disposed on the PCBA board 40, the feeding terminal 41 is electrically connected to the upper radiation plate 20 through the input matching circuit 43, and the lower radiation plate 10 is electrically connected to the ground terminal 42 through the output matching circuit 44. It will be appreciated that the input matching circuit 43 and the output matching circuit 44 are intended to improve the stability of the circuit and to provide protection.

Further, a heat conducting and insulating layer 60 is arranged between the upper radiating sheet 20 and the PCBA board 40. The heat conductive and insulating layer 60 may be a high-performance elastomer insulating material based on a special film, which has excellent cutting resistance and excellent heat conductivity, and is intended to prevent the PCBA board 40 from being short-circuited with the upper radiating plate 20 and to improve heat dissipation efficiency.

As a preferred embodiment of the present invention, when it is applied to the field of mobile phone technology, the 4G communication rf antenna system 100 further includes a mobile phone housing 50, and the lower radiation plate 10 is integrally disposed with the mobile phone housing 50. The lower radiation piece 10 is used as a part of the handset case 50, so that the installation space can be sufficiently reduced and the signal intensity can be increased. It should be noted that a person skilled in the art could make several variations and modifications, and apply them to other technical fields than mobile phones, without departing from the spirit of the present invention, which falls within the protection scope of the present invention.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A4G communication radio frequency antenna system, its characterized in that: comprises a lower radiation piece, an upper radiation piece, a translation mechanism and a PCBA board;

2. The 4G communication radio frequency antenna system according to claim 1, wherein: the length of the lower radiation piece is greater than that of the upper radiation piece, and the width of the lower radiation piece is equal to that of the upper radiation piece.

3. The 4G communication radio frequency antenna system according to claim 2, wherein: the lower radiation piece and the upper radiation piece are made of copper sheets.

4. The 4G communication radio frequency antenna system according to claim 1, wherein: the PCBA board is also provided with an input matching circuit and an output matching circuit, the feed-in end is electrically connected with the upper radiation piece through the input matching circuit, and the lower radiation piece is electrically connected with the grounding end through the output matching circuit.

5. The 4G communication radio frequency antenna system according to claim 1, wherein: and a heat conduction insulating layer is arranged between the upper radiation piece and the PCBA board.

6. The 4G communication radio frequency antenna system according to claim 1, wherein: the 4G communication radio frequency antenna system further comprises a mobile phone shell, and the lower radiating sheet and the mobile phone shell are integrally arranged.