CN112351335B - Wireless communication television - Google Patents

The application provides a wireless communication television, this wireless communication television includes first antenna module and second antenna module, and wherein, first antenna module includes first transmitting unit and first control unit, and second antenna module includes second transmitting unit and second control unit, and first control unit is used for controlling first transmitting unit emission signal based on first reflection parameter, and second control unit is used for controlling second transmitting unit emission signal based on second reflection parameter, and wherein, the sum of first reflection parameter and second reflection parameter approaches zero. By making the sum of the first reflection parameter and the second reflection parameter approach zero, the correlation between the two antenna modules is reduced, so that the mutual interference between the first antenna module and the second antenna module in the same-frequency operation is reduced.

Wireless communication television

Technical Field

The present application relates to the field of communications technologies, and in particular, to a wireless communications television.

Background

With the rapid development of the internet of things technology and smart home, the WIFI module and the Bluetooth module are applied to a television, so that the television can perform wireless transmission. Based on the WIFI module, the television can access the Internet to acquire video and audio resources in the Internet.

In the prior art, a television typically has a plurality of WIFI modules, each of which can operate in either the 2.4G or 5G frequency bands, or can switch between the 2.4G and 5G frequency bands.

However, because the space of the television is limited, when more than two WIFI modules work in the same frequency band, signal interference exists between the WIFI modules, so that the problems of unstable connection, network blocking and the like are caused, and the user experience is reduced.

Disclosure of Invention

Based on the technical problem, the application provides a wireless communication television set to solve the problem of signal mutual interference among a plurality of WIFI modules.

The technical scheme adopted by the application is as follows:

in one aspect of the embodiments of the present application, a wireless communication television is provided, where the wireless communication television includes a first antenna module and a second antenna module, where the first antenna module includes a first transmitting unit and a first control unit, and the second antenna module includes a second transmitting unit and a second control unit; the first control unit is used for controlling the first transmitting unit to transmit signals based on the first reflection parameters; the second control unit is used for controlling the second transmitting unit to transmit signals based on the second reflection parameters; wherein the sum of the first reflection parameter and the second reflection parameter approaches zero.

In an exemplary embodiment, the first control unit is specifically composed of a first component and a second component, the first component includes at least one first element, the second component includes at least one second element, the first component is connected in series with the second component, the second component is connected in series with the first emission unit, and the first element and the second element are capacitance, inductance or resistance; the second control unit comprises a third component and a fourth component, the third component comprises at least one third element, the fourth component comprises at least one fourth element, the third component is connected with the fourth component in series, the fourth component is connected with the second emission unit in series, and the third element and the fourth element are capacitance, inductance or resistance.

In an exemplary embodiment, the first assembly comprises three first elements connected in parallel and the second assembly comprises three second elements connected in series.

In an exemplary embodiment, the wireless communication television set further includes: the antenna comprises a first resistor and a second resistor, wherein the first resistor is connected with a first antenna module, the second resistor is connected with a shielding piece, a gap is reserved between the first resistor and the second resistor, the shielding piece is located in an overlapping area of a signal transmitted by the first antenna module and a signal transmitted by the second antenna module, and the shielding piece is used for blocking the signal transmitted by the first antenna module and the signal transmitted by the second antenna module.

In an exemplary embodiment, the first element comprises a first capacitor and the second element comprises a second capacitor, the first capacitor and the second capacitor being coupled to ground.

In an exemplary embodiment, the wireless communication television set further includes: the Bluetooth module comprises a Bluetooth transmitting unit and a Bluetooth control unit, wherein the Bluetooth control unit is used for controlling the Bluetooth transmitting unit to transmit signals, the isolation module is located on the shortest distance connecting line between the first antenna module and the Bluetooth module, and the isolation module is used for blocking signals transmitted by the first antenna module and signals transmitted by the Bluetooth module.

In an exemplary embodiment, the bluetooth control unit includes a bluetooth control assembly including a fifth assembly including at least one fifth element and a sixth assembly including at least one sixth element, the fifth assembly being grounded, the sixth assembly being in series with the bluetooth transmitting unit, the fifth and sixth elements being capacitive, inductive or resistive.

In an exemplary embodiment, the isolation module comprises at least two first elements connected in series with each other, wherein the first elements are capacitors, inductors or resistors.

In an exemplary embodiment, the isolation module further comprises at least two second elements connected in parallel with each other and in series with the at least two first elements, wherein the second elements are capacitive, inductive or resistive.

In an exemplary embodiment, the operating frequency of the first antenna module and the second antenna module is 2.4GHZ or 5GHZ.

In an embodiment of the present application, a wireless communication television is provided, the wireless communication television includes a first antenna module and a second antenna module, wherein the first antenna module includes a first transmitting unit and a first control unit, and the second antenna module includes a second transmitting unit and a second control unit; the first control unit is used for controlling the first transmitting unit to transmit signals based on the first reflection parameters; the second control unit is used for controlling the second transmitting unit to transmit signals based on the second reflection parameters; the sum of the first reflection parameter and the second reflection parameter approaches zero.

By adopting the mode, the correlation between the two antenna modules is reduced by making the sum of the first reflection parameter and the second reflection parameter approach zero, so that the mutual interference between the first antenna module and the second antenna module in the same-frequency operation is reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application:

fig. 1 is a schematic block diagram of a wireless communication television according to an embodiment of the present application;

fig. 2 is a schematic diagram of phase relation of antenna signals according to an embodiment of the present application;

fig. 3A is a schematic circuit diagram of an antenna module according to an embodiment of the present application;

figure 3B is a schematic circuit diagram of another antenna module according to an embodiment of the present application,

fig. 4 is a schematic layout structure of an antenna module according to an embodiment of the present application;

fig. 5 is a schematic diagram of a current direction of an antenna module according to an embodiment of the present application;

fig. 6A is a schematic circuit diagram of a bluetooth module according to an embodiment of the present application;

FIG. 6B is a schematic circuit diagram of an isolation module according to an embodiment of the present application;

fig. 7 is a schematic layout structure of a bluetooth module and an isolation module according to an embodiment of the present application;

fig. 8 is a schematic diagram of current directions of an antenna module and a bluetooth module according to an embodiment of the present application.

There has been shown in the drawings, and will hereinafter be described, specific embodiments of the present application with the understanding that the present application is not intended to limit the scope of the inventive concepts in any way, but is to be construed as an illustrative basis for the inventive concepts of the present application by way of example only.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used 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" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In order to reduce interference between two wireless modules, the technical scheme of the application is provided.

In an embodiment of the present application, a wireless communication television is provided, the wireless communication television includes a first antenna module and a second antenna module, wherein the first antenna module includes a first transmitting unit and a first control unit, and the second antenna module includes a second transmitting unit and a second control unit; the first control unit is used for controlling the first transmitting unit to transmit signals based on the first reflection parameters; the second control unit is used for controlling the second transmitting unit to transmit signals based on the second reflection parameters; wherein the sum of the first reflection parameter and the second reflection parameter approaches zero.

Specifically, referring to fig. 1, fig. 1 is a schematic block diagram of a wireless communication television according to an embodiment of the present application, and as shown in the drawing, the wireless communication television includes two antenna modules, where each of the two antenna modules has a transmitting unit and a control unit. For the antenna module, the reflection parameters are determined based on the parameter properties possessed by the control unit. Thus, once the parameters of the control unit are determined, the reflection parameters are also determined accordingly, i.e. the reflection parameters can be understood as the properties that the antenna module has.

Based on the reflection parameters of the antennas, an envelope correlation coefficient (EnvelopeCorrelationCoefficient, ECC) between the antennas can be calculated. The magnitude of the ECC may reflect the degree of coupling between the radiation directions of the two antennas, and a smaller value of the ECC indicates a lower degree of coupling between the antennas, a lower correlation of signals, and thus a smaller interference between the antennas.

Taking equation (2) into equation (3) for calculation, we can get:

P＝|a ₁ | ² C ₁₁ +|a ₂ | ² C ₂₂ +C ₁₂ a ₁ a ₂ ^* +C ₂₁ a ₂ a ₁ ^* (4)

wherein,,

from equation (6), C can be derived _ij ＝C _ij ^* Thus, based on equation (4), it can be derived that:

P＝a ^H Ca (7)

since the total radiated power of the antenna can be expressed as the difference between the input power and the reflected power at the same time, it can be expressed as the following equation:

P＝∑a _i -∑b _i ＝a ^H a-b ^H b＝a ^H (I-S ^H S)a (9)

wherein b _i = (i=1, 2) represents the reflected signals of the two antennas. Comparing equation (7) with equation (9), one can get:

C＝I-S ^H S (9)

the combination of equation (5) and equation (7) can be obtained:

taking equations (10), (11) and (12) into equation (1), the ECC calculation mode of the antenna calculated by the reflection parameter can be obtained: namely:

From equation (13), when S ₁₁ And S is equal to ₂₂ Diametrically opposed, are least affected by each other. At this time, the ECC is at a minimum, i.e., the interference is at a minimum. Specifically, referring to fig. 2, fig. 2 is a schematic diagram of phase relationships of antenna signals according to an embodiment of the present application, and as shown, graphs (a), (b), (c), and (d) respectively show four phase relationships of the antenna signals. In the graph (a), the phase difference of the antenna signals of the two antennas is 0 degrees or 360 degrees, and at this time, the two antenna signals are in a mutually superimposed state, and at this time, the ECC is large, and mutual interference is serious. In the graph (b), the phase difference of the antenna signals of the two antennas is 90 degrees, and it can be seen from the graph that in this state, the two antenna signals interfere with each other in two phases, while the other phases are not affected by each other, the ECC is small, and the interference between the signals is relatively low. In the graph (c), the phase difference of the antenna signals of the two antennas is 180 degrees, in this state, the two antenna signals are respectively in the peaks and the valleys, overlap and can cancel each other only when the phase is 0 degrees, and are not affected by each other, so that the ECC is minimum and mutual interference is minimum. In the graph (d), the phase difference of the antenna signals of the two antennas is a certain angle (i.e., an angle other than 0 degrees, 90 degrees, 180 degrees or 360 degrees) other than the above three cases, and at this time, the two antenna signals are affected in amplitude by each other, ECC is large, and mutual interference is serious. It can be seen that the phase difference of the antenna signals of the two antennas is optimal for the inter-signal interference to be 180 degrees. At this time S ₁₁ And S is equal to ₂₂ When the phase difference between the antenna signals is completely opposite, the phase difference between the antenna signals is 180 degrees, the ECC is minimum, and the mutual influence between the antenna signals is minimum.

In one example embodiment, the wireless communication television of the present application may further include a shielding assembly composed of two resistors and a shielding member, wherein one of the two resistors is electrically connected to the antenna module and the other resistor is connected to the shielding member, and the shielding member may be made of a metal material (e.g., copper, silver, aluminum, etc.), a polymer material (e.g., conductive plastic, conductive paint, surface conductive material, conductive glass, conductive film, etc.), or a wave absorbing material (e.g., ceramic). In one embodiment, the shielding performance of the shield needs to be up to 15dB or more. A gap is left between the two resistors, thereby forming an isolation channel with the shield to block the signals emitted by the two antenna modules. The shielding assembly is disposed in an overlapping region of signals transmitted by the two antenna modules.

In this embodiment, by making the sum of the first reflection parameter and the second reflection parameter approach zero, the correlation between the two antenna modules is reduced, so that the mutual interference between the first antenna module and the second antenna module in the same-frequency operation is reduced. In some embodiments, an isolation component is disposed in the radiation overlapping region of the two antennas, and an isolation channel is formed by a gap between the resistors, so that antenna signals are blocked, and signal interference between the antennas is further reduced.

In an embodiment, the wireless communication television of the embodiment of the application may further include a bluetooth module and an isolation module, wherein the bluetooth module includes a bluetooth transmitting unit and a bluetooth control unit, the bluetooth control unit is used for controlling the bluetooth transmitting unit to transmit signals, the isolation module is located on a shortest distance connection between the antenna module and the bluetooth module, and the isolation module is used for blocking signals transmitted by the antenna module and signals transmitted by the bluetooth module. Specifically, for example, for two antenna modules a and B, the connection M between the geometric center of the antenna module a and the geometric center of the bluetooth module is 2 cm, and the connection N between the geometric center of the antenna module B and the geometric center of the bluetooth module is 2.5 cm, then the shortest distance connection is connection N.

In one embodiment, the bluetooth control module controls the bluetooth transmitting unit to transmit a bluetooth signal based on the bluetooth reflection parameter, and a current direction of the bluetooth signal is orthogonal to a current direction of a signal transmitted by an antenna module nearest to the bluetooth module, so as to reduce interference between the signal of the bluetooth module and the signal of the antenna module.

In this embodiment, the wireless communication television has a bluetooth module, and by adding an isolation module between the bluetooth module and the antenna module, the mutual influence of the currents of the bluetooth module and the antenna module is avoided, and the interference between the bluetooth module and the antenna module is reduced.

The foregoing is merely a preferred exemplary embodiment of the present application and is not intended to limit the embodiments of the present application, and those skilled in the art may make various changes and modifications according to the main concept and spirit of the present application, so that the protection scope of the present application shall be subject to the protection scope of the claims.