CN117353004A

CN117353004A - Dual-port microstrip antenna, antenna decoupling method and electronic equipment

Info

Publication number: CN117353004A
Application number: CN202311177794.4A
Authority: CN
Inventors: 张伟泉; 张志军
Original assignee: Tsinghua University; Honor Device Co Ltd
Current assignee: Tsinghua University; Honor Device Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2024-01-05
Also published as: CN114069218B; CN114069218A

Abstract

The embodiment of the application is applicable to the technical field of antennas and provides a dual-port microstrip antenna, an antenna decoupling method and electronic equipment, wherein the dual-port microstrip antenna works in a first frequency band and a second frequency band, the interval between the first frequency band and the second frequency band is smaller than a preset threshold, and the dual-port microstrip antenna comprises: the antenna comprises an antenna radiation branch, a first feed branch, a second feed branch, a Printed Circuit Board (PCB) and a metal probe, wherein the PCB comprises a first feed point, a second feed point and a through hole; the first position is between the first feeding point and the second feeding point, the metal probe is used for decoupling signals of the first frequency point, and the dual-port microstrip antenna can reduce signal interference caused by smaller intervals between different working frequency bands when the same electronic equipment works by adopting different wireless standards.

Description

Dual-port microstrip antenna, antenna decoupling method and electronic equipment

The application is a divisional application of China patent application which is submitted by the national intellectual property office, the application number of which is 202111265713.7, and the application name of which is 'dual-port microstrip antenna, antenna decoupling method and electronic equipment' on the day of 10 months and 28 days of 2021.

Technical Field

The embodiment of the application relates to the technical field of antennas, in particular to a dual-port microstrip antenna, an antenna decoupling method and electronic equipment.

Background

With the vigorous development of wireless communication technology, the wireless frequency band is used as a scarce resource, and the interval between the wireless frequency bands occupied by different wireless standards is smaller.

In some scenarios, when the same electronic device works with different wireless standards, mutual interference exists between ports corresponding to different wireless standards on the electronic device due to smaller intervals between working frequency bands occupied by different wireless standards. For example, the router occupies a frequency band of 5.925GHz-7.125GHz when working with the Wi-Fi 6E standard, and 5.15GHz-5.835GHz when working with the Wi-Fi6 standard. Because 5.835GHz and 5.925GHz differ by only 0.09GHz, mutual interference of signals exists between a port corresponding to Wi-Fi 6E and a port corresponding to Wi-Fi6 on the router.

Therefore, how to reduce signal interference caused by smaller intervals between different operating frequency bands when the same electronic device operates with different wireless standards becomes a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a dual-port microstrip antenna, an antenna decoupling method and electronic equipment, which reduce signal interference caused by smaller intervals between different working frequency bands when the same electronic equipment works by adopting different wireless standards.

In a first aspect, a dual-port microstrip antenna is provided, the dual-port microstrip antenna works in a first frequency band and a second frequency band, an interval between the first frequency band and the second frequency band is smaller than a preset threshold, and the dual-port microstrip antenna includes:

the antenna radiation branch, the first feed branch, the second feed branch, the Printed Circuit Board (PCB) and the metal probe, wherein the PCB comprises a first feed point, a second feed point and a through hole, the antenna radiation branch is connected with the first feed point through the first feed branch, the antenna radiation branch transmits a first signal through the first feed branch, and the first signal is a signal of a first frequency band; the antenna radiation branch is connected with a second feed point through a second feed branch, and transmits a second signal through the second feed branch, wherein the second signal is a signal of a second frequency band; the metal probe is connected with the PCB through a through hole, and the through hole is arranged at a first position of the PCB; the diameter of the area where the first position is located is larger than the diameter of the through hole; the surface of the PCB is made of a metal material, and the PCB is made of a dielectric material at a first position; the first position is between the first feeding point and the second feeding point, the metal probe is used for decoupling signals of a first frequency point, and the first frequency point is a frequency point between the first frequency band and the second frequency band.

The dual-port microstrip antenna that this application embodiment provided, work at first frequency channel and second frequency channel, the interval between first frequency channel and the second frequency channel is less than the threshold value of predetermineeing, and this dual-port microstrip antenna includes: the antenna radiation branch, the first feed branch, the second feed branch, the Printed Circuit Board (PCB) and the metal probe, wherein the PCB comprises a first feed point, a second feed point and a through hole, the antenna radiation branch is connected with the first feed point through the first feed branch, the antenna radiation branch transmits a first signal through the first feed branch, and the first signal is a signal of a first frequency band; the antenna radiation branch is connected with a second feed point through a second feed branch, and transmits a second signal through the second feed branch, wherein the second signal is a signal of a second frequency band; the metal probe is connected with the PCB through a through hole, and the through hole is arranged at a first position of the PCB; the diameter of the area where the first position is located is larger than the diameter of the through hole; the surface of the PCB is made of a metal material, and the PCB is made of a dielectric material at a first position; the first position is between the first feeding point and the second feeding point, the metal probe is used for decoupling signals of a first frequency point, the first frequency point is a frequency point between the first frequency band and the second frequency band, isolation between the first feeding point and the second feeding point can be improved, and signal interference caused by smaller intervals between different working frequency bands when the same electronic equipment works by adopting different wireless standards can be reduced.

In one embodiment, the first position is a position of the virtual magnetic wall in an electric field intensity distribution diagram of the dual-port microstrip antenna in a common mode state of the first frequency point.

According to the embodiment of the application, according to the first position determined by the position of the virtual magnetic wall in the electric field intensity distribution diagram of the dual-port microstrip antenna in the common mode state under the first frequency point, the metal probe can be accurately arranged at the position with larger electric field intensity of the dual-port microstrip antenna in the common mode state, and meanwhile, the position with smaller electric field intensity in the differential mode state is also arranged, so that the decoupling effect of the metal probe on the signal of the first frequency point is better, the isolation between the first feed point and the second feed point is improved, and the signal interference caused by smaller intervals between different working frequency bands of the electronic equipment is reduced.

In one embodiment, the first location is at a midpoint of a connection between the first and second feed points.

In the embodiment of the application, the first position where the metal probe is located is at the midpoint of the connecting line of the first feeding point and the second feeding point, that is, the first position can be determined through the positions of the first feeding point and the second feeding point, and convenience in determining the first position is improved.

In one embodiment, one end of the metal probe is connected to a printed circuit board PCB and the other end of the metal probe is connected to an antenna radiating stub.

In the embodiment of the application, the one end and the PCB of metal probe are connected, and the other end is connected with antenna radiation branch knot, that is to say, metal probe fixes respectively on PCB and antenna radiation branch knot for metal probe's stability is higher, is difficult for droing. In addition, the metal probe is connected with the antenna radiation branch, so that the decoupling effect of the metal probe can be improved.

In one embodiment, the dual-port microstrip antenna further comprises a first filter and a second filter, the first filter being connected to the first feed point, the first filter being for filtering the second signal; the second filter is connected with the second feed point and is used for filtering the first signal.

In the embodiment of the application, the first filter is used for filtering the second signal of crosstalk in the first feeding point, so that the signal transmitted through the first feeding branch is a signal for filtering the second signal, and the influence of the second signal on the dual-port microstrip antenna working in the first frequency band through the first feeding branch is avoided. Similarly, the first signal of crosstalk in the second feeding point is filtered through the second filter, so that the signal transmitted through the second feeding branch is the signal of the first signal filtered, and the influence of the first signal on the dual-port microstrip antenna working in the second frequency band through the second feeding branch is avoided.

In one embodiment, the dual-port microstrip antenna further comprises a first matching circuit and a second matching circuit, wherein the first feed point is connected with the first filter through the first matching circuit, and the first matching circuit is used for adjusting the working frequency band of the antenna radiation branch to a first frequency band; the second feed point is connected with a second filter through a second matching circuit, and the second matching circuit is used for adjusting the working frequency of the antenna radiation branch to a second frequency band.

In the embodiment of the application, the dual-port microstrip antenna further comprises a first matching circuit and a second matching circuit, and the dual-port microstrip antenna can adjust the impedance of the first feed point in the first frequency band through the first matching circuit so that the first feed point is more matched between the first frequency band and the antenna radiation branch, and the dual-port microstrip antenna can work in the first frequency band and the second frequency band simultaneously under the condition that the size of the antenna radiation branch is more matched with the second frequency band. The dual-port microstrip antenna can adjust the impedance of the second feed point in the second frequency band through the second matching circuit, so that the second feed point and the antenna radiation branch are more matched in the second frequency band, and the antenna can work in the first frequency band and the second frequency band at the same time under the condition that the size of the antenna radiation branch is more matched with the first frequency band.

In one embodiment, the first matching circuit includes a first microstrip line, the second matching circuit includes a second microstrip line, the first microstrip line and/or the second microstrip line is used for adjusting a phase of the first signal in the first filter, and the first microstrip line and/or the second microstrip line is used for adjusting a phase of the second signal in the second filter.

In the embodiment of the application, the first matching circuit comprises a first microstrip line, the second matching circuit comprises a second microstrip line, the phase of the first signal between the first filter is adjusted through the first microstrip line and/or the second microstrip line, so that the isolation between the first feed point and the second feed point is not influenced by the signal reflected to the first filter through the second filter, and the phase of the second signal between the second filter is adjusted through the first microstrip line and/or the second microstrip line, so that the isolation between the first feed point and the second feed point is not influenced by the signal reflected to the second filter through the first filter, and the isolation between the first feed point and the second feed point is further improved.

In one embodiment, in the case that the first frequency band is lower than the second frequency band, the value of the first frequency point is a target value, and the target value is an average value of the highest frequency point of the first frequency band and the lowest frequency point of the second frequency band.

In the embodiment of the application, under the condition that the first frequency band is lower than the second frequency band, the value of the first frequency point is the average value of the highest frequency point in the first frequency band and the lowest frequency point in the second frequency point, so that the first frequency point can be quickly determined in the decoupling process of the signal of the first frequency point, and the decoupling efficiency is improved.

In one embodiment, the first frequency point is a frequency point determined according to the isolation between the first and second feed points.

In the embodiment of the application, the first frequency point is the frequency point determined according to the isolation between the first feeding point and the second feeding point, so that when the signal of the first frequency point is decoupled through the metal probe, the frequency point with the worst isolation can be accurately selected for decoupling, the accuracy in the decoupling process of the metal probe is higher, and the decoupling effect is improved.

In a second aspect, an antenna decoupling method is provided, where the method is applied to a dual-port microstrip antenna, where the dual-port microstrip antenna operates in a first frequency band and a second frequency band, and an interval between the first frequency band and the second frequency band is smaller than a preset threshold, and the dual-port microstrip antenna includes: the antenna radiation branch, the first feed branch, the second feed branch, the Printed Circuit Board (PCB) and the metal probe, wherein the PCB comprises a first feed point, a second feed point and a through hole, the antenna radiation branch is connected with the first feed point through the first feed branch, the antenna radiation branch transmits a first signal through the first feed branch, and the first signal is a signal of a first frequency band; the antenna radiation branch is connected with a second feed point through a second feed branch, and transmits a second signal through the second feed branch, wherein the second signal is a signal of a second frequency band; the metal probe is connected with the PCB through a through hole, and the through hole is arranged at a first position of the PCB; the diameter of the area where the first position is located is larger than the diameter of the through hole; the surface of the PCB is made of a metal material, and the PCB is made of a dielectric material at a first position; the first location is between a first feed point and a second feed point, the method comprising:

Determining a first frequency point, wherein the first frequency point is a frequency point between a first frequency band and a second frequency band;

and decoupling the signal of the first frequency point by adopting a metal probe.

In one embodiment, the dual-port microstrip antenna further comprises a first filter and a second filter, the first filter being connected to the first feed point and the second filter being connected to the second feed point, the method further comprising: the second signal is filtered by the first filter and the first signal is filtered by the second filter.

In one embodiment, the dual-port microstrip antenna further comprises a first microstrip line and a second microstrip line, the first feeding point is connected to the first filter through the first microstrip line, and the second feeding point is connected to the second filter through the second microstrip line, the method further comprising: the phase of the first signal in the first filter is adjusted through the first microstrip line and/or the second microstrip line, and the phase of the second signal in the second filter is adjusted through the first microstrip line and/or the second microstrip line.

In one embodiment, in a case where the first frequency band is lower than the second frequency band, determining the first frequency point includes: determining an average value of a highest frequency point in a first frequency band and a lowest frequency point in a second frequency band; the average value is taken as the value of the first frequency point.

In one embodiment, the determining the first frequency point includes: and the first frequency point is determined according to the isolation degree between the first feeding point and the second feeding point.

In a third aspect, there is provided an electronic device comprising a dual-port microstrip antenna as in the first aspect.

Drawings

Fig. 1 is a schematic diagram of an application scenario of a dual-port microstrip antenna;

FIG. 2 is a schematic diagram of the distribution of two frequency bands;

fig. 3 is a schematic structural diagram of a conventional dual-port microstrip antenna;

fig. 4 is a schematic diagram of S-parameters of a filter in a conventional dual-port microstrip antenna;

fig. 5 is a schematic structural diagram of a dual-port microstrip antenna according to an embodiment of the present application;

FIG. 6 is a back view of a PCB in one embodiment;

FIG. 7 is a schematic diagram of a metal probe in one embodiment;

FIG. 8 is a graph showing the electric field intensity distribution of a dual-port microstrip antenna according to one embodiment;

FIG. 9 is a schematic diagram of impedance variation on a Smith chart for adjusting the diameter of a medium in one embodiment;

FIG. 10 is a schematic diagram of a dual-port microstrip antenna employing a metal probe;

FIG. 11 is a schematic diagram of S parameters of a dual-port microstrip antenna without a metal probe and a dual-port microstrip antenna with a metal probe;

Fig. 12 is a schematic structural diagram of a dual-port microstrip antenna according to another embodiment of the present application;

FIG. 13 is a schematic flow diagram of a first signal according to one embodiment of the present disclosure;

FIG. 14 is a schematic diagram of dual-port microstrip antenna modeling in one embodiment of the present application;

fig. 15 is a schematic diagram of S-parameters of a dual-port microstrip antenna according to an embodiment of the present application;

fig. 16 is a flow chart of an antenna decoupling method according to an embodiment of the present disclosure;

fig. 17 is a flowchart of an antenna decoupling method according to another embodiment of the present disclosure;

fig. 18 is a schematic diagram of an electronic device in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" means two or more than two.

The terms "first," "second," "third," and the like, are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature.

The antenna provided by the embodiment of the application can be applied to electronic equipment. Optionally, the electronic device may be a notebook computer, a tablet computer, a palm computer, a vehicle-mounted terminal, a sales terminal, a wireless router, a wearable device, a mobile phone, and the like.

Currently, one electronic device may generally support multiple wireless standards, and different wireless standards are adopted to enable the electronic device to communicate with different other electronic devices. For example, as shown in fig. 1, the wireless router 10 may support both Wi-Fi6 and Wi-Fi 6E standards, and the wireless router 10 may communicate with the air conditioner 20 and the printer 30 supporting the Wi-Fi6 standard using the Wi-Fi6 standard and with the cell phone 40, the tablet 50 and the notebook 60 supporting the Wi-Fi 6E standard using the Wi-Fi 6E standard. As shown in FIG. 2, the Wi-Fi6 standard uses 5.15GHz-5.835GHz, and the Wi-Fi 6E standard uses 5.925GHz-7.125GHz. The dual-port microstrip antenna in the wireless router 10 may include an antenna radiation branch, a first feed branch, and a second feed branch as shown in fig. 3. The antenna radiation branch is connected with a first feed point on the PCB through a first feed branch, and the antenna radiation branch is connected with a second feed point on the PCB through a second feed branch. The antenna radiation branch transmits signals of 5.15GHz-5.835GHz through the first feed branch, and the antenna radiation branch is used for transmitting signals of 5.925GHz-7.125GHz through the second feed branch. Since the phase difference between 5.835GHz and 5.925G is only 0.09GHz, when the filter is used to filter the signal transmitted by the dual-port microstrip antenna in the wireless router 10, the filtering effect between 5.835GHz and 5.925G is not ideal. Illustratively, as shown in fig. 4, the isolation between the first feeding point and the second feeding point is poor in the frequency band of 5.84GHz-6.06GHz, more than-10 dB, and particularly, at 5.92GHz, the isolation between the first feeding point and the second feeding point is only-4.9 dB.

The dual-port microstrip antenna provided in the embodiment of the present application is described in detail below with reference to fig. 5 to 15.

As shown in fig. 5, the embodiment of the present application provides a dual-port microstrip antenna 1000, where the dual-port microstrip antenna 1000 works in a first frequency band and a second frequency band, the interval between the first frequency band and the second frequency band is smaller than a preset threshold, and the dual-port microstrip antenna 1000 includes: the antenna radiation branch 1100 is connected with the first feeding point 1011 through the first feeding branch 1200, the antenna radiation branch 1100 transmits a first signal through the first feeding branch 1200, and the first signal is a signal of a first frequency band; the antenna radiation branch 1100 is connected with the second feeding point 1012 through the second feeding branch 1300, and the antenna radiation branch 1100 transmits a second signal through the second feeding branch 1300, wherein the second signal is a signal of a second frequency band; the metal probe 1400 is connected to the PCB 1010 through a via 1013, the via 1013 being disposed at a first location 1014 of the PCB 1010; the diameter of the region where the first location 1014 is located is greater than the diameter of the via 1013; the surface of the PCB 1010 is a metallic material and the PCB 1010 is a dielectric material in a first position 1014; the first location 1014 is between the first feeding point 1011 and the second feeding point 1012, and the metal probe 1400 is used to decouple signals of a first frequency band, which is a frequency band between the first frequency band and the second frequency band.

It should be appreciated that the first frequency band may be a frequency band occupied by a first wireless standard and the second frequency band may be a frequency band occupied by a second wireless standard. The first frequency band may be an operating frequency band of 5.15GHz-5.835GHz occupied by Wi-Fi 6 standard, and the second frequency band may be an operating frequency band of 5.925GHz-7.125GHz occupied by Wi-Fi 6E standard. The length of the first frequency band may be greater than the length of the second frequency band, or may be less than the length of the second frequency band, or may be the same as the length of the second frequency band. And a space exists between the first frequency band and the second frequency band, namely, in the case that the first frequency band is lower than the second frequency band, the highest frequency point on the first frequency band is smaller than the lowest frequency point on the second frequency band. The interval between the first frequency band and the second frequency band is smaller than a preset threshold, that is, the difference between the highest frequency point on the first frequency band and the lowest frequency point on the second frequency band is smaller than the preset threshold.

The first frequency bin may be a frequency bin between the first frequency bin and the second frequency bin. It should be understood that the first frequency point may be one frequency point or may be multiple frequency points, which is not limited in the embodiment of the present application.

Optionally, when the first frequency band is lower than the second frequency band, the value of the first frequency point is a target value, and the target value is an average value of the highest frequency point of the first frequency band and the lowest frequency point of the second frequency point.

For example, continuing to take the example that the first frequency band is 5.15GHz-5.835GHz of the operating frequency band occupied by the Wi-Fi 6 standard, the second frequency band is 5.925GHz-7.125GHz of the operating frequency band occupied by the Wi-Fi 6E standard, and the value of the first frequency point may be (5.835+5.925)/(2=5.88, that is, 5.88GHz.

It should be noted that, when the dual-port microstrip antenna 1000 operates in the first frequency band and the second frequency band, and the interval between the first frequency band and the second frequency band is smaller, the signal (first signal) of the first frequency band may be partially coupled to the second feeding point 1012, which results in a decrease in the operation performance of the dual-port microstrip antenna 1000 in the first frequency band. Similarly, a portion of the signal in the second frequency band (the second signal) is also received by the first feeding point 1011, resulting in a reduced operation performance of the dual-port microstrip antenna 1000 in the second frequency band. Decoupling the dual-port microstrip antenna 1000 is equivalent to reducing the influence of the first signal on the second feeding point 1012, thereby reducing the influence of the first signal on the working performance of the dual-port microstrip antenna 1000 when working in the second frequency band; meanwhile, the influence of the second signal on the first feeding point 1011 is reduced, and further, the influence of the second signal on the working performance of the dual-port microstrip antenna 1000 when working in the first frequency band is reduced.

In the embodiment of the application, under the condition that the first frequency band is lower than the second frequency band, the value of the first frequency point is the average value of the highest frequency point of the first frequency band and the lowest frequency point of the second frequency point, so that the first frequency point can be rapidly determined in the decoupling process of the signals of the first frequency point, and the decoupling efficiency is improved.

Optionally, the first frequency point is a frequency point determined according to the isolation between the first and second feed branches.

In one example, the initial dual-port microstrip antenna may be simulated prior to decoupling the signal at the first frequency point using the metal probe 1400, resulting in a result of the isolation between the first and second feeding points 1011, 1012, e.g., 5.92GHz at the frequency point with the worst isolation between the first and second feeding points 1011, 1012, as shown in fig. 4. At this time, the frequency point with the worst isolation degree of 5.92GHz may be used as the first frequency point, and the signal with the lowest isolation degree of 5.92GHz may be decoupled by using the metal probe 1400.

It should be understood that the metal probe 1400 may be a cylindrical metal body, a rectangular metal body, or an irregular metal body, which is not limited in comparison with the embodiment of the present application.

The dual-port microstrip antenna 1000 may include an antenna radiating stub 1100, a first feed stub 1200, a second feed stub 1300, a metal probe 1400, and a PCB 1010. The antenna radiating branch 1100 transmits a first signal through the first feeding branch 1200, where the first signal is a signal in the first frequency band, which is equivalent to the dual-port microstrip antenna 1000 receiving and/or transmitting a signal in the first frequency band through the first feeding branch 1200, so that the working frequency band of the dual-port microstrip antenna 1000 is the first frequency band. The dual-port microstrip antenna 1000 supports a wireless standard corresponding to the first frequency band.

Fig. 6 is a back view of a PCB in an embodiment of the present application, and as shown in fig. 6, a first matching circuit and a second matching circuit may be further disposed on a back surface of the PCB. Optionally, the dual-port microstrip antenna 1000 may further include a first matching circuit 1500 and a second matching circuit 1600, where the first matching circuit 1500 is configured to adjust the operating frequency band of the antenna radiation branch 1100 to a first frequency band, and the second matching circuit 1600 is configured to adjust the operating frequency band of the antenna radiation branch 1100 to a second frequency band.

It should be appreciated that the antenna radiating stub 1100 in the dual-port microstrip antenna 1000 is typically of a fixed size. Generally, the operating frequency band of the dual-port microstrip antenna 1000 is related to the size of the antenna radiation stub 1100, in other words, the same antenna radiation stub 1100 can only enable the dual-port microstrip antenna 1000 to operate in one frequency band. In one possible scenario, when the sum of the first frequency band and the second frequency band in which the dual-port microstrip antenna 1000 operates simultaneously is wide, the size of the antenna radiating stub 1100 can be more matched to only one of the frequency bands. For example, the size of the antenna radiating stub 1100 is more matched to the second frequency band, and the dual-port microstrip antenna 1000 cannot operate normally in the first frequency band. That is, relying solely on the antenna radiating stub 1100 does not enable the dual-port microstrip antenna 1000 to operate well in both the first frequency band and the second frequency band. Therefore, the impedance of the first feeding point 1011 in the first frequency band can be adjusted by the first matching circuit 1500, so that the matching degree between the first feeding point 1011 and the antenna radiation branch 1100 in the first frequency band is higher, and the dual-port microstrip antenna 1000 can work well in the first frequency band.

It should be noted that the antenna radiating branch 1100, the first feeding branch 1200, the second feeding branch 1300, and the metal probe 1400 may be disposed on one side of the PCB 1010, and the first matching circuit 1500 may be disposed on the other side of the PCB 1010, that is, on the back of the PCB. The first matching circuit 1500 may be exemplarily composed of a lumped inductance L1 and a microstrip line as shown in fig. 6.

In the embodiment of the application, the dual-port microstrip antenna further comprises a first matching circuit, and the dual-port microstrip antenna can adjust the impedance of the first feed point in the first frequency band through the first matching circuit so that the first feed point is more matched between the first frequency band and the antenna radiation branch, and the dual-port microstrip antenna can work in the first frequency band and the second frequency band simultaneously under the condition that the size of the antenna radiation branch is more matched with the second frequency band.

The antenna radiation branch 1100 transmits a second signal through the second feed branch 1300, where the second signal is a signal in the second frequency band, and is equivalent to the dual-port microstrip antenna 1000 receiving and/or transmitting a signal in the second frequency band through the second feed branch 1200, so that the working frequency band of the dual-port microstrip antenna 1000 is the second frequency band. The dual-port microstrip antenna 1000 supports a wireless standard corresponding to the second frequency band through the second feeding branch 1300.

Similar to the function of the first matching circuit 1500, when the sum of the first frequency band and the second frequency band in which the dual-port microstrip antenna 1000 operates simultaneously is wider, the dual-port microstrip antenna 1000 cannot operate well in both the first frequency band and the second frequency band by only relying on the antenna radiation branch 1100. Therefore, the impedance of the second feeding point 1012 in the second frequency band can be adjusted by the second matching circuit 1500, so that the matching degree between the second feeding point 1012 and the antenna radiating branch 1100 is higher, and the dual-port microstrip antenna 1000 can work well in the second frequency band.

It should be noted that the second matching circuit 1600 may also be disposed on the back of the PCB 1010. The second matching circuit may be exemplarily composed of a lumped inductance L2 and a microstrip line as shown in fig. 6.

In the embodiment of the application, the impedance of the second feed point in the second frequency band can be adjusted by the two-port microstrip antenna through the second matching circuit, so that the second feed point and the antenna radiation branch are more matched in the second frequency band, and the antenna can work in the first frequency band and the second frequency band simultaneously under the condition that the size of the antenna radiation branch is more matched with the first frequency band.

The metal probe 1400 is disposed at a first position between the first feeding point 1011 and the second feeding point 1012. It should be understood that the first location may be between the first feeding point 1011 and the second feeding point 1012, and on the line between the first feeding point 1011 and the second feeding point 1012, or may be between the first feeding point 1011 and the second feeding point 1012, but not on the line between the first feeding point 1011 and the second feeding point 1012, which is not limited in the embodiment of the present application.

In one possible scenario, the metal probe 1400 may be an existing device that is cylindrical in shape. Such a metal probe 1400 is widely used in various products.

It will be appreciated that the PCB is formed by stacking layers of different materials. Taking a PCB formed by stacking 4 layers of materials as an example, the first layer of material forming the PCB, that is, the surface of the PCB, is typically a metal material in the order from top to bottom. For example, the metal material is copper. The second and third layer materials are typically dielectric materials of low conductivity, such as epoxy fiberglass board FR4. The fourth layer of material, i.e. the lowest layer of the PCB, may also be a metallic material. During the connection of the metal probe 1400 to the PCB 1010 through the via 1013, the dielectric materials of the second and third layers are typically preserved by removing the metal material of the first and bottom layers at the first location 1014 of the metal probe 1400 and the PCB 1010 in order to avoid a short circuit between the metal probe 1400 and the PCB 1010. That is, the metal probe 1400 is inserted into the through hole 1013 and fixed on the PCB 1010 by the dielectric material remaining in the first position 1014. Illustratively, as shown in fig. 7 (a), a metal probe 1400 is inserted into a through hole (not shown because the through hole 1013 is inserted by the metal probe 1400), and is fixed on the PCB 1010 by the dielectric material of the first location 1014. Wherein, as shown in (b) of fig. 7, the diameter of the metal probe is d1, and the diameter of the dielectric material in the first position is d2.

Alternatively, one end of the metal probe 1400 is connected to the PCB 1010, and the other end of the metal probe 1400 is connected to the antenna radiating stub 1100.

The principle of decoupling the signal of the first frequency point by the metal probe 1400 is described below.

Since the interval between the first frequency band and the second frequency band where the dual-port microstrip antenna 1000 operates is small, electromagnetic wave signal crosstalk between the first feeding point 1011 and the second feeding point 1012 is serious. The first frequency band is exemplified by 5.15GHz-5.835GHz of the working frequency band occupied by Wi-Fi 6 standard, and the second frequency band is exemplified by 5.925GHz-7.125GHz of the working frequency band occupied by Wi-Fi 6E standard. As shown in fig. 8 (a), the dual-port microstrip antenna 1000 is in a differential mode state in electric field intensity distribution at 6 GHz. Between the first feeding point 1011 and the second feeding point 1012, there is a region where the electric field intensity is small, which may be equivalent to a virtual electric wall. As shown in (b) of fig. 8, the dual-port microstrip antenna 1000 is in a common mode state in an electric field intensity distribution diagram at 6 GHz. Between the first feeding point 1011 and the second feeding point 1012, there is a region where the electric field intensity is large, which can be equivalent to a virtual electric wall. The metal probe 1400 is placed on the virtual electrical wall and also on the virtual magnetic wall. In one possible scenario, the position of the virtual magnetic wall in the common mode state is directly intermediate the first feeding point 1011 and the second feeding point 1012, that is, at the midpoint of the connection between the first feeding point 1011 and the second feeding point 1012.

It should be appreciated that when the metal material is disposed in a region where the electric field is small, the electric field distribution on the whole antenna is less affected. Therefore, when the metal probe 1400 is placed at the position of the virtual electric wall in the differential mode state, that is, the virtual magnetic wall in the common mode state, the influence on the electric field intensity distribution in the differential mode state is small, and the influence on the electric field intensity distribution in the common mode state is large. This corresponds to changing the electric field intensity distribution in the common mode state, i.e., changing the impedance in the common mode state, which corresponds to decoupling by the metal probe 1400. The decoupling effect of the metal probe 1400 is best when the impedance of the antenna in the differential mode state and the impedance in the common mode state are the same. The impedance of the antenna in the differential mode state and the impedance in the common mode state may have some deviation due to the influence of the antenna size, the feeding position, the surrounding environment, and the like. By adjusting the diameter d2 of the first position 1014 as shown in fig. 7, the impedance in the differential mode state and the impedance in the common mode state can be adjusted to be as equal as possible. Illustratively, as shown in fig. 9, adjusting d2 has a large influence on the impedance of the common mode state, and does not affect the impedance of the differential mode state. Therefore, the impedance in the common mode state can be independently adjusted by adjusting d2, so that the impedance of the antenna in the differential mode state and the impedance in the common mode state are as close as possible.

By disposing the metal probe 1400 at the position of the virtual magnetic wall, the impedance of the dual-port microstrip antenna 1000 in the common mode is affected by the metal probe 1400, so that the impedance in the common mode is equal to the impedance in the differential mode as much as possible, and the isolation between the first feeding branch and the second feeding branch is improved.

The effect of the metal probe 1400 to decouple the signal of the first frequency point will be described below.

As further shown in fig. 3, fig. 3 is a schematic structural diagram of a dual-port microstrip antenna not including a metal probe, where (a) in fig. 3 is a front view of the dual-port microstrip antenna, (b) in fig. 3 is a top view of the dual-port microstrip antenna, and (c) in fig. 3 is a side view of the dual-port microstrip antenna. As shown in fig. 3, the dual-port microstrip antenna includes a first feeding branch, a second feeding branch, an antenna radiating branch, and a PCB, and does not include a metal probe, that is, the dual-port microstrip antenna is a dual-port microstrip antenna that is not decoupled by the metal probe. The dual-port microstrip antenna works in a first frequency band and a second frequency band, wherein the first frequency band is 5.15GHz-5.835GHz of the working frequency band occupied by Wi-Fi6 standard, and the second frequency band is 5.925GHz-7.125GHz of the working frequency band occupied by Wi-Fi6E standard. The dimensions of the antenna are shown in table 1.

TABLE 1

Parameters (parameters)	Numerical value (mm)
		l ₀	50
l ₁	20
		l ₂	6
w ₀	40
		w ₁	16
d ₁	1
		h	4
h ₁	0.6

Fig. 10 is a schematic structural diagram of a dual-port microstrip antenna including a metal probe, where (a) in fig. 10 is a front view of the dual-port microstrip antenna, (b) in fig. 10 is a top view of the dual-port microstrip antenna, and (c) in fig. 10 is a side view of the dual-port microstrip antenna. As shown in fig. 10, the antenna includes a metal probe, a first feeding branch, a second feeding branch, an antenna radiating branch, and a PCB, that is, the dual-port microstrip antenna is a dual-port microstrip antenna decoupled through the metal probe. The dual-port microstrip antenna works in a first frequency band and a second frequency band, wherein the first frequency band is 5.15GHz-5.835GHz of the working frequency band occupied by Wi-Fi 6 standard, and the second frequency band is 5.925GHz-7.125GHz of the working frequency band occupied by Wi-Fi 6E standard. The dimensions of the dual-port microstrip antenna are shown in table 2. Compared with the dual-port microstrip antenna shown in fig. 3, the dual-port microstrip antenna shown in fig. 10 has more metal probes, and the positions and the sizes of other devices are the same as those of the dual-port microstrip antenna shown in fig. 3. The distance between the metal probe and each of the first and second feeding points shown in fig. 10 was 3mm.

TABLE 2

Parameters (parameters)	Numerical value (mm)
		l ₀	50
l ₁	20
		l ₂	6
l ₃	3
		l ₄	3
w ₀	40
		w ₁	16
d ₁	1
		h	4
h ₁	0.6

The isolation between the first feeding point and the second feeding point of the dual-port microstrip antenna shown in fig. 3 is as shown in fig. 11 (a). It can be seen that the isolation between the first feeding point and the second feeding point of the dual-port microstrip antenna is poor and is about-13 dB between 5GHz and 6 GHz.

The isolation between the first and second feeding branches of the dual-port microstrip antenna shown in fig. 10 is as shown in fig. 11 (b). It can be seen that compared with the dual-port microstrip antenna shown in fig. 3, the isolation between the first feeding point and the second feeding point of the dual-port microstrip antenna using the metal probe is significantly improved.

Fig. 12 is a schematic structural diagram of a dual-port microstrip antenna according to another embodiment of the present application, where (a) in fig. 12 is a front view of the dual-port microstrip antenna, and (b) in fig. 12 is a back view of the dual-port microstrip antenna. As shown in fig. 12, a dual-port microstrip antenna 1000 is provided, the dual-port microstrip antenna 1000 operates in a first frequency band and a second frequency band, a space between the first frequency band and the second frequency band is smaller than a preset threshold, and the dual-port microstrip antenna 1000 includes: the antenna radiation branch 1100 is connected with the first feeding point 1011 through the first feeding branch 1200, and the antenna radiation branch 1100 transmits a first signal through the first feeding branch 1200, wherein the first signal is a signal of a first frequency band; the antenna radiation branch 1100 is connected with the second feeding point 1012 through the second feeding branch 1300, and the antenna radiation branch 1100 transmits a second signal through the second feeding branch 1300, wherein the second signal is a signal of a second frequency band; the metal probe 1400 is connected to the PCB 1010 through a via 1013, the via 1013 being disposed at a first location 1014 of the PCB 1010; the diameter of the region where the first location 1014 is located is greater than the diameter of the via 1013; the surface of the PCB 1010 is a metallic material and the PCB 1010 is a dielectric material in a first position 1014; the first position 1014 is between the first feeding point 1011 and the second feeding point 1012, the metal probe 1400 is used for decoupling a signal of a first frequency point, the first frequency point is a frequency point between the first frequency band and the second frequency band, and the first filter 1700 is connected with the first feeding point 1011 and is used for filtering a second signal; the second filter 1800 is connected to the second feeding point 1012, and is used for filtering the first signal, the first feeding point 1011 is connected to the first filter 1700 through the first matching circuit 1500, the first matching circuit 1500 is used for adjusting the operating frequency band of the antenna radiation branch 1100 to the first frequency band, the second feeding point 1012 is connected to the second filter 1800 through the second matching circuit 1600, and the second matching circuit 1600 is used for adjusting the operating frequency of the antenna radiation branch 1100 to the second frequency band.

It should be appreciated that first filter 1700 may be a separately packaged electronic device or may be a circuit that implements a filtering function through a matching circuit, which is not limited by the embodiments of the present application. The second filter 1800 may be a separately packaged electronic device, or may be a circuit that implements a filtering function through a matching circuit, which is not limited in this embodiment of the present application.

When the dual-port microstrip antenna 1000 operates in the first frequency band and the second frequency band at the same time, the second signal is crosstalk to the first feeding point 1011, and the second signal crosstalk to the first feeding point 1011 is filtered by the first filter 1700, so that the signal transmitted by the dual-port microstrip antenna 1000 through the first feeding branch 1200 is a signal from which the second frequency band is filtered. Similarly, the first signal is crosstalking to the second feeding point 1012, and the first signal crosstalking to the second feeding point 1012 is filtered by the second filter 1800, so that the signal transmitted by the dual-port microstrip antenna 1000 through the second feeding branch 1300 is a signal with the first frequency band filtered out.

Optionally, the first matching circuit 1500 includes a first microstrip line 1501, the second matching circuit 1600 includes a second microstrip line 1601, the first microstrip line 1501 and/or the second microstrip line 1601 are used to adjust the phase of the first signal in the first filter 1700, and the first microstrip line 1501 and/or the second microstrip line 1601 are used to adjust the phase of the second signal in the second filter 1800.

It should be appreciated that the phase of the first signal at the first filter 1700 may be adjusted by the following embodiments.

Example 1

The phase of the first signal at the first filter 1700 is adjusted by changing the electrical length of the first microstrip line 1501.

Example two

The phase of the first signal at the first filter 1700 is adjusted by changing the electrical length of the second microstrip line 1601.

Example III

The phase of the first signal at the first filter 1700 is adjusted by changing the electrical lengths of the first microstrip line 1501 and the second microstrip line 1601.

The process of adjusting the phase of the second signal in the second filter 1800 by the first microstrip line 1501 and/or the second microstrip line 1601 is similar to the process of adjusting the phase of the first signal in the first filter 1700 described above, and will not be repeated here.

A detailed description will be given below of how to adjust the phase of the first signal in the first filter 1700 by the first microstrip line 1501 and/or the second microstrip line 1601.

It should be understood that, when the electromagnetic wave signal is transmitted along the microstrip line, the phase of the electromagnetic wave signal changes with the change of the length of the microstrip line. The wavelength of the electromagnetic wave signal of 6GHz is, for example, 50 mm, the electromagnetic wave signal is transmitted 12.5 mm along the microstrip line, with a phase lag of 90 °, 25 mm along the microstrip line, and with a phase lag of 180 °.

As shown in fig. 13, when the first signal passes through the first filter 1700, the first matching circuit 1500, the antenna radiation branch 1100, and the second matching circuit 1600 to reach the second filter 1800, the first signal is reflected by the second filter 1800, and when the first signal reaches the first filter 1700 along the second matching circuit 1600, the antenna radiation branch 1100, and the first matching circuit 1500, the first signal currently transmitted is superimposed with the reflected first signal. If the phase difference between the currently transmitted first signal and the reflected first signal is 180 ° and is equivalent to a signal with the opposite phase between the currently transmitted first signal and the reflected first signal, the reflected first signal can cancel a part of the currently transmitted first signal, so that the impedance characteristic of the port at the first filter 1700 is not affected, and the performance of the dual-port microstrip antenna 1000 when operating in the first frequency band is not affected. If the phase difference between the currently transmitted first signal and the reflected first signal is 0 °, which is equivalent to that the currently transmitted first signal and the reflected first signal are the same in phase, the reflected first signal is overlapped with the currently transmitted first signal, which affects the impedance characteristic of the port at the first filter 1700, and further affects the performance of the dual-port microstrip antenna 1000 when operating in the first frequency band. Therefore, by adjusting the lengths of the first microstrip line 1501 and the second microstrip line 1601, the phase between the reflected first signal and the first signal currently transmitted is different by 180 ° as much as possible, so as to avoid that the reflected first signal affects the port characteristic of the port at the first filter 1700, and further affects the performance of the dual-port microstrip antenna 1000 when working in the first frequency band.

The implementation and technical effects of adjusting the phase of the second signal in the second filter 1600 by the first microstrip line 1501 and the second microstrip line 1601 are similar to those of adjusting the phase of the first signal in the first filter 1500 by the first microstrip line 1501 and the second microstrip line 1601, and are not described here again.

The electrical length of the first microstrip line 1501 and/or the second microstrip line 1601 that are finally determined are not adjusted to the optimal electrical length for the phase of the first signal in the first filter 1500, nor are the optimal electrical length for the phase of the second signal in the second filter 1600. The electrical length of the first microstrip line 1501 and/or the second microstrip line 1601 that is finally determined may be an electrical length that meets the index requirement obtained by compromising the phase of the first signal at the first filter 1500 and the phase of the second signal at the second filter 1600.

The length of the first microstrip line 1501 and the length of the second microstrip line 1601 may be determined by software simulation. For example, as shown in fig. 14, the antenna shown in fig. 10 is simulated and modeled, the S parameter of the antenna radiation branch 1100 is taken as the parameter of SNP3, the S parameter of the first filter 1700 is taken as the parameter of SNP1, and the S parameter of the second filter 1800 is taken as the parameter of SNP 2. By varying the electrical length of the ideal transmission lines TL1 and TL2, i.e. L1 and L2 in fig. 14. Where TL1 is a transmission line with an impedance of 50Ohm (i.e. z=50 Ohm) operating at 6GHz and TL2 is a transmission line with an impedance of 50Ohm operating at 6 GHz. Trem1 and Trem2 are ideal ports, namely ports with impedance of 50Ohm, and observe the change of S21, the electric length of TL1 corresponding to the best isolation is taken as the electric length of the first microstrip line 1501, and the electric length of TL2 is taken as the electric length of the second microstrip line 1601. In the case where the other parameters of the antenna are identical, the isolation between the first and second feeding points is as shown in fig. 15, in which the isolation between the first and second feeding points is less than-25 dB. That is, by adjusting the length of the first microstrip line 1501 and the length of the second microstrip line 1601, the isolation between the first feeding point and the second feeding point is significantly improved.

The embodiment of the present application further provides an antenna decoupling method, which is applied to the dual-port microstrip antenna shown in fig. 5 to 15, and is described in detail below through the embodiments shown in fig. 16 and 17.

Fig. 16 is a flow chart of an antenna decoupling method according to an embodiment of the present application, where the method is applied to a dual-port microstrip antenna, and the dual-port microstrip antenna works in a first frequency band and a second frequency band, and an interval between the first frequency band and the second frequency band is smaller than a preset threshold, and the dual-port microstrip antenna includes: the antenna radiation branch, the first feed branch, the second feed branch, the Printed Circuit Board (PCB) and the metal probe, wherein the PCB comprises a first feed point, a second feed point and a through hole, the antenna radiation branch is connected with the first feed point through the first feed branch, the antenna radiation branch transmits a first signal through the first feed branch, and the first signal is a signal of a first frequency band; the antenna radiation branch is connected with a second feed point through a second feed branch, and transmits a second signal through the second feed branch, wherein the second signal is a signal of a second frequency band; the metal probe is connected with the PCB through a through hole, and the through hole is arranged at a first position of the PCB; the diameter of the area where the first position is located is larger than the diameter of the through hole; the surface of the PCB is made of a metal material, and the PCB is made of a dielectric material at a first position; the first location is between the first and second feed points, as shown in fig. 16, the method comprising:

S101, determining a first frequency point, wherein the first frequency point refers to a frequency point between a first frequency band and a second frequency band.

In the process of determining the first frequency point, the following embodiments may be used.

In the case where the first frequency band is lower than the second frequency band, the first frequency point may be determined by the first embodiment.

Example 1

The average value of the highest frequency point in the first frequency band and the lowest frequency point in the second frequency band is determined, and then the average value is used as the numerical value of the first frequency point.

Example two

And the first frequency point is determined according to the isolation degree between the first feeding point and the second feeding point.

The antenna can be modeled to obtain the isolation between the first feeding point and the second feeding point, and the frequency point with the worst isolation is used as the first frequency point.

S102, decoupling signals of the first frequency point by adopting a metal probe.

The antenna decoupling method provided in the embodiment of the present application is similar to the technical means and beneficial effects of the antenna shown in fig. 5 to 15, and is not described here again.

Fig. 17 is a flow chart of an antenna decoupling method according to another embodiment of the present application, where the method is applied to a dual-port microstrip antenna, and the dual-port microstrip antenna includes: the antenna radiation branch is connected with the first feed point through the first feed branch, the antenna radiation branch transmits a first signal through the first feed branch, and the first signal is a signal of a first frequency band; the antenna radiation branch is connected with a second feed point through a second feed branch, and transmits a second signal through the second feed branch, wherein the second signal is a signal of a second frequency band; the metal probe is connected with the PCB through a through hole, and the through hole is arranged at a first position of the PCB; the diameter of the area where the first position is located is larger than the diameter of the through hole; the surface of the PCB is made of a metal material, and the PCB is made of a dielectric material at a first position; the first position is between a first feed point and a second feed point, the first filter is connected with the first feed point, the second filter is connected with the second feed point, the first feed point is connected with the first filter through a first microstrip line, and the second feed point is connected with the second filter through a second microstrip line, the method comprises:

S201, determining a first frequency point, wherein the first frequency point refers to a frequency point between a first frequency band and a second frequency band.

S202, decoupling signals of the first frequency point by adopting a metal probe.

S203, filtering the second signal through the first filter, and filtering the first signal through the second filter.

S204, adjusting the phase of the first signal in the first filter through the first microstrip line and/or the second microstrip line, and adjusting the phase of the second signal in the second filter through the first microstrip line and/or the second microstrip line.

It should be understood that, although the steps in the flowcharts in the above embodiments are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps in the flowcharts may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order in which the sub-steps or stages are performed is not necessarily sequential, and may be performed in turn or alternately with at least a portion of the sub-steps or stages of other steps or other steps.

In one possible aspect, the present application further provides an electronic device including the dual-port microstrip antenna provided by the above embodiment.

The embodiment of the application does not limit the type of the electronic equipment. By way of example, the electronic device may be, but is not limited to, a cell phone, tablet computer, smart speaker, smart large screen (also known as smart television), or wearable device, etc.

By way of example, fig. 18 shows a schematic structural diagram of the electronic device 100. The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, and a subscriber identity module (subscriber identification module, SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

It is to be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, electronic device 100 may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units, such as: the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a memory, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate devices or may be integrated in one or more processors.

It should be understood that the interfacing relationship between the modules illustrated in the embodiments of the present application is only illustrative, and does not limit the structure of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also use different interfacing manners, or a combination of multiple interfacing manners in the foregoing embodiments.

The wireless communication function of the electronic device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device 100 may be used to cover a single or multiple communication bands. Different antennas may also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed into a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution for wireless communication including 2G/3G/4G/5G, etc., applied to the electronic device 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA), etc. The mobile communication module 150 may receive electromagnetic waves from the antenna 1, perform processes such as filtering, amplifying, and the like on the received electromagnetic waves, and transmit the processed electromagnetic waves to the modem processor for demodulation. The mobile communication module 150 can amplify the signal modulated by the modem processor, and convert the signal into electromagnetic waves through the antenna 1 to radiate. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be provided in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low frequency baseband signal to the baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs sound signals through an audio device (not limited to the speaker 170A, the receiver 170B, etc.), or displays images or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional module, independent of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc., as applied to the electronic device 100. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

In some embodiments, antenna 1 and mobile communication module 150 of electronic device 100 are coupled, and antenna 2 and wireless communication module 160 are coupled, such that electronic device 100 may communicate with a network and other devices through wireless communication techniques. The wireless communication techniques may include the Global System for Mobile communications (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long term evolution (long term evolution, LTE), fifth generation wireless communication systems (5G,the 5th Generation of wireless communication system), BT, GNSS, WLAN, NFC, FM, and/or IR techniques, among others. The GNSS may include a global satellite positioning system (global positioning system, GPS), a global navigation satellite system (global navigation satellite system, GLONASS), a beidou satellite navigation system (beidou navigation satellite system, BDS), a quasi zenith satellite system (quasi-zenith satellite system, QZSS) and/or a satellite based augmentation system (satellite based augmentation systems, SBAS).

It should be noted that any of the electronic devices mentioned in the embodiments of the present application may include more or fewer modules in the electronic device 100.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments. It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not limit the implementation process of the embodiment of the present application in any way. Furthermore, the terms "first," "second," "third," and the like in the description of the present application and in the claims, are used for distinguishing between descriptions and not necessarily for indicating or implying a relative importance. Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise.

Finally, it should be noted that: the foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an electronic equipment, its characterized in that, electronic equipment includes dual-port microstrip antenna, dual-port microstrip antenna work is in first frequency channel and second frequency channel, first frequency channel with interval between the second frequency channel is less than the threshold value of predetermineeing, dual-port microstrip antenna includes:

the antenna radiation branch is connected with the first feed point through the first feed branch, the antenna radiation branch transmits a first signal through the first feed branch, and the first signal is a signal of the first frequency band; the antenna radiation branch is connected with a second feed point through the second feed branch, and transmits a second signal through the second feed branch, wherein the second signal is a signal of the second frequency band; the metal probe is connected with the PCB through the through hole, the through hole is arranged in a first area of the PCB, and the diameter of the first area is larger than that of the through hole; the first area is made of dielectric materials and the other areas are made of metal materials on the upper surface and the lower surface of the PCB; the first region is between the first feeding point and the second feeding point, the metal probe is used for decoupling signals of a first frequency point, the first frequency point is a frequency point between the first frequency band and the second frequency band, one end of the metal probe is connected with the PCB in the first region, and the other end of the metal probe is connected with the antenna radiation branch.

2. The electronic device of claim 1, wherein the first region is at a location of a virtual magnetic wall of the dual-port microstrip antenna in an electric field intensity profile of a common mode state of the first frequency point.

3. The electronic device of claim 1, wherein the first region is at a location of a virtual electrical wall of the dual-port microstrip antenna in an electric field intensity profile of a differential mode state of the first frequency point.

4. The electronic device of claim 2, wherein the first region is at a location of a virtual electrical wall in the electric field intensity distribution diagram of the dual-port microstrip antenna in the differential mode state of the first frequency point, and wherein the location of the virtual electrical wall in the electric field intensity distribution diagram of the dual-port microstrip antenna in the differential mode state of the first frequency point coincides with the location of the virtual electrical wall in the electric field intensity distribution diagram of the dual-port microstrip antenna in the differential mode state of the first frequency point.

5. The electronic device of claim 1 or 2, wherein the first region is at a midpoint of a line connecting the first feed point and the second feed point.

6. The electronic device of claim 1 or 2, wherein the dual-port microstrip antenna further comprises a first filter and a second filter, the first filter being connected to the first feed point, the first filter being configured to filter the second signal; the second filter is connected with the second feed point and is used for filtering the first signal.

7. The electronic device of claim 5, wherein the dual-port microstrip antenna further comprises a first filter and a second filter, the first filter being coupled to the first feed point, the first filter being configured to filter the second signal; the second filter is connected with the second feed point and is used for filtering the first signal.

8. The electronic device of claim 1 or 2, wherein the dual-port microstrip antenna further comprises a first matching circuit and a second matching circuit, the first feeding point is connected to the first matching circuit, and the first matching circuit is configured to adjust an operating frequency band of the antenna radiation branch to the first frequency band; the second feed point is connected with the second matching circuit, and the second matching circuit is used for adjusting the working frequency of the antenna radiation branch to the second frequency band.

9. The electronic device of claim 6, wherein the dual-port microstrip antenna further comprises a first matching circuit and a second matching circuit, the first matching circuit comprising a first microstrip line, the second matching circuit comprising a second microstrip line, the first microstrip line and/or the second microstrip line being configured to adjust a phase of the first signal at the first filter, and the first microstrip line and/or the second microstrip line being configured to adjust a phase of the second signal at the second filter.

10. The electronic device of claim 7, wherein the dual-port microstrip antenna further comprises a first matching circuit and a second matching circuit, the first matching circuit comprising a first microstrip line, the second matching circuit comprising a second microstrip line, the first microstrip line and/or the second microstrip line being configured to adjust a phase of the first signal at the first filter, and the first microstrip line and/or the second microstrip line being configured to adjust a phase of the second signal at the second filter.

11. The electronic device according to claim 1 or 2, wherein, in a case where the first frequency band is lower than the second frequency band, a value of the first frequency point is a target value, and the target value is an average value of a highest frequency point of the first frequency band and a lowest frequency point of the second frequency band.

12. The electronic device according to claim 1 or 2, wherein the first frequency point is a frequency point determined according to an isolation degree between the first feeding point and the second feeding point.