CN201167131Y - Dual-frequency coupling antenna - Google Patents

Abstract

The utility model relates to a dual-frenquency coupling antenna, its characteristic includes: an insulating substrate for providing a printed metal film layer; one end of the grounding part is electrically connected with the first radiation part, the other end of the grounding part is connected with the second radiation part, and the grounding part has the same potential with the grounding end of the antenna receiver; a first radiation part, which is provided with a middle turning coupling section and is in energy coupling with the second radiation part, extends to a feed-in point and is electrically connected with the signal feed-in line and then is connected to the grounding part; a second radiation part, which is provided with an extension turn on the grounding part and forms a corresponding distance of an electric insulation distance between the end part of the second radiation part and the coupling section of the first radiation part; a signal feed-in line, which is a coaxial cable, the main signal end line of which is electrically connected with the feed-in point of the first radiation part, and the grounding end line of which is electrically connected with the grounding part, for transmitting the signal to the receiving/transmitting circuit.

Description

Dual frequency coupled antenna

technical field

The utility model relates to a dual-frequency coupling antenna, in particular to an inverted F antenna integrated with a coupling antenna on a plane, which has dual-frequency and small size, and provides a dual-frequency antenna for use in wireless networks. The antenna, which can achieve an optimized frequency response through coupling.

Background technique

There are four standards for WLAN, including IEEE802.11, IEEE802.11b and Bluetooth applicable in the 2.4GHz frequency band, and IEEE802.11a applicable in the 5GHz frequency band. When multiple wireless frequency bands are used, corresponding antennas are required to cooperate.

Please refer to the perspective view of the existing dual-frequency antenna 100 in Fig. 1, which uses an inverted F-type dual-frequency antenna to receive signals of a first frequency and a second frequency, and the antenna 100 is provided with a first plane 200 The conduction element and a second plane 300 conduction element, the first plane 200 conduction element is an L-shaped structure, and the second plane 300 conduction element is a curved rectangular structure, and is perpendicular to the first plane conduction element And connected at a contact point 400, when the area of the conductive component of the second plane 300 is too large, it is easy to cause the breakage of the joint with the conductive component of the first plane 200. But the above-mentioned antenna 100 can adjust its bandwidth, impedance matching and gain through the shape of the first planar conduction component and the second planar conduction component, but the area size of the second planar conduction component often affects The gain of the above-mentioned antenna, if the antenna needs to increase the bandwidth, it will inevitably increase its substrate area, so it is limited to the space between the embedded device, so the above-mentioned antenna cannot effectively and fully expand its substrate area.

The generalization of the prior art therefore has the following disadvantages:

1. The existing technology is limited by the limited space and cannot achieve high bandwidth.

2. In the prior art, when the area of the second planar conduction component is too large, it is easy to cause breakage at the connection point with the first planar conduction component.

3. When the prior art is used, the induction resonance ability is insufficient, the voltage standing wave is relatively small, and the circuit design is difficult.

4. The disadvantages of the prior art are cumbersome manufacturing process, high manufacturing cost and difficult installation.

Therefore, how to get rid of the above defects is the technical difficulty that the designer of the utility model in this case wants to solve. In view of this, the utility model designer of this case, based on years of experience in related product design, felt the inconvenience of the above-mentioned traditional products. After years of painstaking research and trial improvement, he was able to eliminate many shortcomings of the existing dual-band antenna and successfully developed it. Finish this case, make the utility model be born, and to enhance effect.

Contents of the invention

The purpose of this utility model is to provide a dual-frequency coupling antenna, especially on the plane, an inverted F antenna and a coupling antenna are integrated, have dual frequency and small size, and provide a dual-frequency antenna used in wireless networks , which can achieve an optimized frequency response through coupling.

The purpose of this utility model is also to provide a device with the advantages of low manufacturing cost, simple manufacturing process, easy installation and use, and low profile and light weight.

Another purpose of the utility model is to provide a small size, suitable for use with various types of electronic communication equipment, and has market competitiveness, which is useful and practically required by the industrial and commercial circles.

Another object of the present invention is to provide a low feed-in loss and low reflection loss with dual frequency, keeping the broadband characteristics of the coupling antenna, and high radiation efficiency.

In order to achieve the purpose of these utility models, and according to the implementation and general description and other advantages, the utility model provides a dual-frequency coupling antenna, which lies in the technical solution, and its features include:

An insulating substrate is provided with a printed metal thin film layer, and the metal thin film layer includes: a grounding part, a first radiation part and a second radiation part;

A grounding part is formed by an electrical conductor of a metal film layer, one end of which is electrically connected to the first radiating part, and the other end is connected to the second radiating part, and the grounding part is connected to the grounding end of the antenna receiver Same potential;

A first radiating part is a metal film layer printed on an insulating substrate, which is provided with an intermediate turning coupling section to couple energy with the second radiating part, and extends to a feed-in point to be electrically connected to the signal feed-in line, and then connected to the ground department;

A second radiating part is a metal thin film layer printed on the insulating substrate, which is connected to the ground part to extend and turn, and between its end and the coupling section of the first radiating part to form a corresponding electrical insulation distance Spacing, in order to achieve the optimal frequency response of coupling energy induction;

A signal feed-in line is a coaxial cable, its main signal end line is electrically connected to the feed-in point of the first radiation part, and its ground end line is electrically connected to the ground part to transmit the signal To the receiving/transmitting circuit.

In another aspect of the present invention, the dual-frequency coupled antenna further includes, wherein the total length of the first radiating part from the feeding point to the free end is about a quarter of the frequency response wavelength.

In another aspect of the present utility model, the dual-frequency coupling antenna further includes, wherein the frequency radiation frequency band of the first radiating part is 2.4 megahertz to 2.5 megahertz.

In another aspect of the present invention, the dual-frequency coupled antenna further includes, wherein the total length of the second radiating part is about a quarter of the frequency response wavelength.

In another aspect of the present utility model, the dual-frequency coupling antenna further includes, wherein the frequency radiation frequency band of the second radiating part is 4.8 megahertz to 5.1 megahertz.

Compared with the prior art, the utility model has the beneficial effect that it solves the problems of the dual-frequency coupling antenna, small size and high quality, is suitable for use with various types of electronic communication equipment, and has market competitiveness for the industrial and commercial circles and industries. Use value and actual needs in the world. It can achieve an optimized frequency response through coupling, providing a dual-band antenna used in wireless networks. It achieves the effects of low manufacturing cost, simple manufacturing process, easy installation and use, and low profile and light weight.

Description of drawings

Figure 1 is a three-dimensional view of an existing dual-frequency antenna;

Fig. 2 is the plan view of the utility model;

Fig. 3 is the coupling section schematic diagram of the present utility model;

Fig. 4 is the embodiment diagram of the present utility model.

Explanation of reference signs: 100-antenna; 200-first plane; 300-second plane; 400-contact;

1-dual frequency coupling antenna; 10-insulating substrate; 2-grounding part; 3-first radiating part; 30-coupling section; 31-feeding point; 32-free end; 4-second radiating part; 40-end 5-signal feed-in line; 50-main signal terminal line; 51-ground terminal line; a-corresponding spacing; b-width.

Detailed ways

The above-mentioned and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

First please refer to Fig. 2 to Fig. 4, which are the plan view of the present utility model, the schematic diagram of the coupling section of the present utility model and the embodiment diagram of the present utility model, wherein a dual-frequency coupling antenna 1 of the present utility model includes:

An insulating substrate 10 is provided with a printed metal thin film layer, and the metal thin film layer includes: a grounding part 2, a first radiation part 3 and a second radiation part 4;

A grounding part 2 is formed by an electrical conductor of a metal film layer, one end thereof is electrically connected to the first radiation part 3, and the other end thereof is connected to the second radiation part 4, and the other said grounding part 2 is connected to the antenna receiving The ground terminal of the device is at the same potential;

A first radiating part 3 is printed on an insulating substrate with a metal thin film layer, which is provided with an intermediate turning coupling section 30 for energy coupling with the second radiating part 4, and extends to a feed-in point 31 to be electrically connected to the signal feed-in line 5 , and then connected to the grounding part 2, and the first radiating part 3, the total length from the feeding point 31 to the free end 32 is about a quarter of the frequency response wavelength, and the first radiating part 3 The frequency radiation frequency band is 2.4 megahertz to 2.5 megahertz;

A second radiating part 4 is printed on the insulating substrate as a metal thin film layer, and it is connected to the ground part 2 to extend and turn, and between its end 40 and the coupling section 30 of the first radiating part 3, an electrical connection is formed. In order to achieve the optimal frequency response of coupling energy induction, the total length of the second radiating part 4 is about a quarter of the wavelength of the frequency response. In addition, the second radiating part 4 The frequency radiation band is 4.8 megahertz to 5.1 megahertz;

A signal feed-in line 5 is a coaxial cable, its main signal terminal line 50 is electrically connected to the feed-in point 31 of the first radiating part 3, and its ground terminal line 51 is electrically connected to the ground part 2 for The said signal is transmitted to the receiving/transmitting circuit.

Please also refer to FIG. 3 , between the second radiating portion 4 and the first radiating portion 3 , a corresponding interval a of an electrical insulation distance is formed, and the distance a between the corresponding interval a and the second radiating portion 4 Width, b, can be adjusted to optimize frequency response for coupling energy induction.

In order to make the utility model also show its progress and practicality, its advantages are enumerated as follows:

1. The utility model has low manufacturing cost, simple manufacturing process and easy installation.

2. The utility model has the advantages of low profile and light weight.

3. Small size, suitable for use with various types of electronic communication equipment, and has market competitiveness.

4. It has application value and actual needs in the industrial and commercial circles and industries.

To sum up, the utility model has indeed achieved the desired effect after breaking through the previous technical structure, and it is not easy for those who are familiar with the above-mentioned technical skills to think about it; moreover, the utility model has not been disclosed before the application , its progressiveness and practicability have obviously met the application requirements for a new model patent, and a new model application is filed in accordance with the law.

The above description is only illustrative, rather than restrictive, of the present invention. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. Or equivalent, but all will fall within the protection domain of the present utility model.

Claims (5)

1. A dual-frequency coupling antenna, characterized in that: it comprises: An insulating substrate, which provides a printed metal thin film layer; A grounding part is formed by a metal film layer electrical conductor, one end of which is electrically connected to a first radiating part, and the other end is connected to a second radiating part, and the other said grounding part is grounded with the antenna receiver Terminal same potential; The first radiating part is a metal thin film layer printed on the insulating substrate, which is provided with an intermediate turning coupling section and a second radiating part for energy coupling, and extends to a feed-in point and a signal feed-in line electrically connected, and then connected to the ground; The second radiating part is a metal thin film layer printed on the insulating substrate, which is connected to the ground part to extend and turn, and an electrical connection is formed between its end and the coupling section of the first radiating part. The corresponding spacing of the permanent insulation; The signal feed-in line is a coaxial cable, and its main signal end line is electrically connected to the feed-in point of the first radiation part, and its ground end line is electrically connected to the ground part to connect The said signal is transmitted to the receiving/transmitting circuit. 2. The dual-frequency coupling antenna according to claim 1, characterized in that the total length of the first radiating part from the feeding point to the free end is a quarter of the frequency response wavelength. 3. The dual-frequency coupling antenna according to claim 1, characterized in that: the frequency radiation frequency band of the first radiating part is 2.4 megahertz to 2.5 megahertz. 4. The dual-frequency coupling antenna according to claim 1, characterized in that: the total length of the second radiation part is a quarter of the frequency response wavelength. 5. The dual-frequency coupling antenna according to claim 1, wherein the frequency radiation frequency range of the second radiating part is 4.8 megahertz to 5.1 megahertz.

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