CN215266683U

CN215266683U - Pifa2.4G patch antenna

Info

Publication number: CN215266683U
Application number: CN202121689504.0U
Authority: CN
Inventors: 杨权生
Original assignee: Shenzhen Feimin Technology Co ltd
Current assignee: Shenzhen Feimin Technology Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-12-21
Anticipated expiration: 2031-07-23

Abstract

The utility model provides a pifa2.4G patch antenna, including base plate, pad, the base plate is multilayer substrate, and the base plate both sides are provided with the pad respectively, and the pad runs through multilayer substrate, the wherein two-layer base plate of base plate are provided with the circuit of positive and negative line of walking respectively, and two-layer base plate that is provided with positive and negative line circuit is connected through the welding plate of both sides respectively and is formed two-layer circuit from top to bottom to the coupled pifa antenna. The utility model has the advantages that: 1. the pifa2.4G patch antenna of the utility model can completely meet the requirements of small size, easy integration, high performance and high cost performance on the market, and has superior market popularization value; 2. in the poor electronic terminal equipment of most antenna environment, traditional two-layer base plate monopole, pifa antenna effect are all difficult for the satisfied requirement, compare the utility model discloses a pifa2.4G patch antenna is very obvious at the performance superiority in these application scenes.

Description

Pifa2.4G patch antenna

Technical Field

The utility model relates to a wireless communication field especially relates to a pifa2.4G patch antenna.

Background

In a wireless communication system, an antenna is an important component and is one of indispensable components. In recent years, the vigorous development of wireless communication and the trend of miniaturization of terminal electronic devices thereof have promoted the development of various electronic devices toward small package size, easy integration, high performance and high cost performance. This puts a demand on miniaturization of the antenna, which requires further reduction in size, as well as a demand for wider bandwidth and good gain performance.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pifa2.4G patch antenna, including base plate, pad, the base plate is multilayer substrate, the base plate both sides are provided with the pad respectively, the pad runs through multilayer substrate, wherein two-layer substrate of base plate is provided with the circuit of line of positive and negative walking respectively, be provided with the two-layer substrate of line circuit of positive and negative walking respectively through both sides two-layer circuit about the formation is connected to the welding plate to the coupled pifa antenna.

As a further improvement, the two-layer base plate that is provided with the circuit is the lower floor base plate of top layer base plate and top layer respectively, be equipped with first circuit, second circuit on the top layer base plate, be equipped with third circuit, fourth circuit on the lower floor base plate of top layer, first circuit passes through base plate one side the pad with third circuit connection becomes a radiating element, the second circuit passes through the base plate opposite side the pad with fourth circuit connection becomes another radiating element, and two radiating element couplings form the pifa antenna.

As a further improvement of the utility model, the base plate both sides the pad adopts the design of borduring.

As a further improvement of the utility model, the three-dimensional size of the pifa2.4G patch antenna is 3.2mm long, 1.6mm wide and 1mm thick.

As a further improvement of the present invention, the substrate is a four-layer FR4 substrate.

The utility model has the advantages that: 1. the pifa2.4G patch antenna of the utility model can completely meet the requirements of small size, easy integration, high performance and high cost performance on the market, and has superior market popularization value; 2. in most electronic terminal equipment with poor antenna environment (such as an antenna area close to a battery, an antenna area close to a human body, and a metal frame or an electronic device), the traditional monopole and pifa antenna with two layers of substrates have difficult effect meeting the requirements, and compared with the pifa2.4G patch antenna of the utility model, the performance superiority in these application scenes is very obvious; 3. the utility model discloses a pifa2.4G patch antenna has characteristics such as high performance, signal stability, anti-interference strong.

Drawings

Fig. 1 is a transparent top view of the pifa2.4G patch antenna of the present invention;

fig. 2 is a top layer structure diagram of the pifa2.4G patch antenna of the present invention;

fig. 3 is a second layer structure diagram of the pifa2.4G patch antenna of the present invention;

fig. 4 is the bottom structure diagram of the pifa2.4G patch antenna of the present invention;

fig. 5 is a side view of the pifa2.4G patch antenna of the present invention;

fig. 6 is the upper structure diagram of the electronic device of the pifa2.4G patch antenna mounting terminal of the present invention (6 is a chip module, 7 is a pifa2.4G patch antenna, 8 is a clearance area, and 9 is a battery);

fig. 7 shows the standing-wave ratio of the passive data-antenna for testing the pifa2.4G patch antenna applied to the terminal electronic device;

fig. 8 shows the return loss of the passive data antenna used by the pifa2.4G patch antenna in the terminal electronics;

fig. 9 is a Smith chart of the passive data-antenna test used by the pifa2.4G patch antenna of the present invention on the terminal electronics;

fig. 10 is the 3D antenna gain radiation pattern of the present invention;

fig. 11 is the gain radiation pattern of the 2D antenna X axis of the present invention;

fig. 12 is the gain radiation pattern of the Y-axis of the 2D antenna of the present invention;

fig. 13 is the utility model discloses 2D antenna Z axis gain radiation pattern.

Detailed Description

The laminated structure based on the multi-layer FR4 substrate patch type carrier enables the wiring of a circuit conductor to be three-dimensional from a plane, and has good advantage for reducing the size of an electronic device. Narrow and the low problem of radiation efficiency for overcoming the bandwidth that produces because antenna size is little and traditional ceramic antenna dielectric constant is high, the utility model discloses a four-layer FR4 base plate is the carrier, has designed the Pifa2.4G patch antenna of four-layer base plate. For the ceramic antenna of wide application on the current market, the utility model discloses a patch antenna has better interference killing feature and high performance price ratio advantage.

As shown in fig. 1, the utility model discloses a pifa2.4G patch antenna 7, including base plate, pad 2, the base plate is multilayer substrate, the base plate both sides are provided with pad 2 respectively, pad 2 runs through multilayer substrate, wherein two-layer substrate of base plate is provided with the circuit of line of positive and negative walking respectively, be provided with the two-layer substrate of line circuit of positive and negative walking respectively through both sides two-layer circuit about the welding plate 2 connection formation to the coupled pifa antenna.

The two layers of substrates provided with circuits are respectively a top layer substrate and a next layer of substrate of the top layer, a first circuit 1 and a second circuit 3 are arranged on the top layer substrate, a third circuit 4 and a fourth circuit 5 are arranged on the next layer of substrate of the top layer, the first circuit 1 is connected with the third circuit 4 through the bonding pad 2 on one side of the substrate to form a radiation unit, the second circuit 3 is connected with the fourth circuit 5 through the bonding pad 2 on the other side of the substrate to form another radiation unit, and the two radiation circuit units are coupled to form a pifa antenna. The utility model discloses circuit design has one deck under top and top in the pifa2.4G patch antenna four-layer board, and the two-layer below of base plate does not have the circuit, and the purpose of design like this is in order to increase the effective height of antenna, improves antenna wholeness ability.

And the welding pads 2 on two sides of the substrate adopt a covered edge design.

The pifa2.4G patch antenna 7 has three-dimensional dimensions of 3.2mm in length, 1.6mm in width and 1mm in thickness.

The substrate is a four-layer FR4 substrate. In the four-layer substrate, circuits are respectively designed on the two uppermost layers, and fig. 2 is a top layer substrate; the circuit bottom layer of the pifa2.4G patch antenna is designed on the second layer of the FR4 four-layer substrate, namely the top layer and the next layer, and is not designed on the bottommost part of the FR4 substrate, as shown in fig. 3; the third and fourth layers of the FR4 substrate have no circuit, and the fourth layer, i.e., the bottom layer, has only two pads 2. As shown in fig. 4.

The detailed structure of the pifa2.4G patch antenna of the four-layer FR4 substrate is shown in fig. 1, 2, 3 and 4, the overall structure is FR4 four-layer substrate, and the upper two layers are designed with circuits, as shown in fig. 2 and 3; the utility model discloses pad 2 adopts the form of borduring, as shown in fig. 2, fig. 3, pad 2 through connection FR4 base plate four layers, and the upper two-layer base plate that has the circuit relies on pad 2 to connect from top to bottom and constitutes a pifa antenna, fig. 2 is that first circuit 1 in the antenna top layer base plate is connected with base plate one side pad 2, this pad 2 reconnection second layer (the next layer base plate of top layer)

third circuit

4, 1, 2, 4 connect into a radiating element promptly; the second circuit 3 in fig. 2 is connected to the pad 2 on the other side and then to the fourth circuit 5 on the second layer (the substrate next to the top layer) to form a radiating element, i.e. 3, 2, 5 are connected to form another radiating element, and these two radiating circuit elements are coupled to form a pifa antenna. In all antenna design forms, the Pifa-type antenna has the advantages of stable signal and strong anti-interference performance, and is widely applied to various electronic terminal devices with harsh antenna environments.

Antenna efficiency, gain and direction meter

The utility model has the advantages that: 1. the pifa2.4G patch antenna of the utility model can completely meet the requirements of small size, easy integration, high performance and high cost performance on the market, and has superior market popularization value; 2. in most electronic terminal equipment with poor antenna environment (such as the antenna area is close to the battery, the antenna area is close to the human body, and is close to the metal frame or the electronic device), the traditional monopole and pifa antenna effect with two layers of substrates is difficult to meet the requirements, and compared with the pifa2.4G patch antenna of the utility model, the performance superiority in these application scenes is very obvious; 3. the utility model discloses a pifa2.4G patch antenna has characteristics such as high performance, signal stability, anti-interference strong.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A pifa2.4G patch antenna, characterized by: the Pifa antenna comprises a substrate and pads (2), wherein the substrate is a multilayer substrate, the two sides of the substrate are respectively provided with the pads (2), the pads (2) penetrate through the multilayer substrate, two layers of substrates of the substrate are respectively provided with circuits for forward and reverse wiring, and the two layers of substrates provided with the circuits for forward and reverse wiring are respectively connected through the pads (2) at two sides to form an upper layer circuit and a lower layer circuit, so that the Pifa antenna is coupled.

2. The pifa2.4G patch antenna of claim 1, wherein: the dual-layer substrate provided with the circuits is a top layer substrate and a next layer substrate of the top layer, a first circuit (1) and a second circuit (3) are arranged on the top layer substrate, a third circuit (4) and a fourth circuit (5) are arranged on the next layer substrate of the top layer, the first circuit (1) is connected with the third circuit (4) through the bonding pad (2) on one side of the substrate to form a radiation unit, the second circuit (3) is connected with the fourth circuit (5) through the bonding pad (2) on the other side of the substrate to form another radiation unit, and the two radiation circuit units are coupled to form a pifa antenna.

3. The pifa2.4G patch antenna of claim 1, wherein: and the welding pads (2) on two sides of the substrate adopt a covered edge design.

4. The pifa2.4G patch antenna of claim 1, wherein: the pifa2.4G patch antenna has three-dimensional dimensions of 3.2mm in length, 1.6mm in width and 1mm in thickness.

5. The pifa2.4G patch antenna of claim 1, wherein: the substrate is a four-layer FR4 substrate.