CN113629373B - Coupler, loop indoor distribution system and signal equalization method - Google Patents
Coupler, loop indoor distribution system and signal equalization method Download PDFInfo
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Abstract
The disclosure relates to a coupler, a loop indoor distribution system and a signal equalization method. The coupler comprises an input port, a coupling port, an output port and an isolation port, wherein a first coupling degree from the input port to the coupling port is different from a second coupling degree from the output port to the isolation port; and the coupler is used for carrying out power equalization processing on signals in two directions of the loop indoor distribution system. The signal balance of the passive loop MIMO room subsystem can be realized by adopting a low-cost, high-stability and low-insertion-loss mode.
Description
Technical Field
The present disclosure relates to the field of mobile communications, and in particular, to a coupler, a loop indoor distribution system, and a signal equalization method.
Background
In modern wireless communication systems, passive devices are widely used due to their environmental protection, no pollution, low power consumption, and high reliability. The coupler is a very common device in passive devices, and the main characteristic of the coupler is that the coupling loss can be designed according to actual requirements.
Disclosure of Invention
The inventor finds out through research that: the technical problem of imbalance of signals in two directions in a 3G/4G/5G passive loop indoor distribution system exists.
In view of at least one of the above technical problems, the present disclosure provides a coupler, a loop indoor distribution system, and a signal equalization method, which can perform power equalization processing on signals in both directions of the loop indoor distribution system.
According to an aspect of the present disclosure, there is provided a coupler comprising an input port, a coupled port, an output port, and an isolated port, wherein:
a first coupling degree from the input port to the coupling port is different from a second coupling degree from the output port to the isolation port;
and the coupler is used for carrying out power equalization processing on signals in two directions of the loop indoor distribution system.
In some embodiments of the present disclosure, the coupler is configured to perform power equalization processing on a first downlink signal from the input port to the coupled port and a second downlink signal from the output port to the isolated port in the loop indoor distribution system.
In some embodiments of the present disclosure, the coupler is configured to perform power equalization processing on a first upstream signal from the coupled port to the input port and a second upstream signal from the isolated port to the output port in the loop indoor distribution system.
In some embodiments of the present disclosure, the coupler comprises a first coupling unit, a circulator, and a second coupling unit, wherein:
a first port of the first coupling unit is connected with the input port, a second port of the first coupling unit is connected with the coupling port, and a third port of the first coupling unit is connected with the output port through a circulator;
the first port of the second coupling unit is connected with the output port through the circulator, the second port of the second coupling unit is connected with the isolation port, and the third port of the second coupling unit is connected with the third port of the first coupling unit through the circulator.
In some embodiments of the present disclosure, the coupler further comprises an isolator, wherein:
and a first port of the isolator is connected with a fourth port of the first coupling unit, and a second port of the isolator is connected with a fourth port of the second coupling unit.
In some embodiments of the present disclosure, the conducting direction of the isolator is unidirectional conduction from the second port of the isolator to the first port of the isolator.
In some embodiments of the present disclosure, the first coupling unit employs a first coupler having a first degree of coupling;
the second coupling unit adopts a bridge or a second coupler with different coupling degrees according to the second coupling degree, wherein the second coupling degree is determined according to the first coupling degree, the first downlink signal power and the second downlink signal power.
In some embodiments of the present disclosure, the coupler is a four-port asymmetric coupler.
In some embodiments of the present disclosure, the circulator is a two-section circulator.
In some embodiments of the present disclosure, the first port of the circulator is connected with the third port of the first coupling unit, the second port of the circulator is connected with the output port, the third port of the circulator is connected with the first port of the second coupling unit, and the fourth port of the circulator is connected with the third port of the second coupling unit.
In some embodiments of the disclosure, the circulator is in unidirectional conduction in a clockwise direction, the first port of the circulator is in unidirectional conduction to the second port of the circulator, the second port of the circulator is in unidirectional conduction to the third port of the circulator, the third port of the circulator is in unidirectional conduction to the fourth port of the circulator, and the fourth port of the circulator is in unidirectional conduction to the first port of the circulator.
In some embodiments of the present disclosure, in a case where the first downstream signal is input from the input port to the first coupling unit, the first downstream signal of partial power is output from the coupling port through the first coupling unit; the first downlink signal of the other part of power passes through a third port of the first coupling unit and is output through the circulator;
under the condition that the second downlink signal is input into the circulator from the output port, the second downlink signal reaches the second coupling unit through the circulator, and the second downlink signal with partial power is output from the isolation port through the second coupling unit; the second downlink signal with the other part of power passes through the circulator from the third port of the second coupling unit to the third port of the first coupling unit, and is output from the input port through the first coupling unit.
In some embodiments of the present disclosure, in a case where the first upstream signal is input from the coupling port, the first upstream signal is output from the input port through the first coupling unit;
and under the condition that the second uplink signal is input from the isolation port, the second uplink signal reaches the fourth port of the first coupling unit through the second coupling unit and the isolator and is output from the output port through the circulator.
According to another aspect of the present disclosure, there is provided a loop indoor distribution system, including the coupler according to any one of the above embodiments.
According to another aspect of the present disclosure, there is provided a signal equalization method including:
the coupler according to any of the above embodiments is used to perform power equalization processing on signals in two directions of a loop indoor distribution system.
In some embodiments of the present disclosure, the signal equalization method further comprises:
determining a first degree of coupling of the first coupling unit;
determining a second coupling degree of the second coupling unit according to the first coupling degree, the first downlink signal power and the second downlink signal power;
and selecting a first coupling unit with a first coupling degree and a second coupling unit with a second coupling degree.
The signal balance of the passive loop MIMO room distribution system can be realized by adopting a low-cost, high-stability and low-insertion-loss mode.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of some embodiments of a coupler of the present disclosure.
FIG. 2 is a schematic diagram of other embodiments of couplers of the present disclosure.
Fig. 3 is a schematic diagram illustrating an uplink operation principle of the low insertion loss asymmetric coupler according to some embodiments of the present disclosure.
Fig. 4 is a schematic diagram of yet other embodiments of couplers according to the present disclosure.
Fig. 5 is a schematic diagram of some embodiments of the disclosed signal equalization method.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the embodiments described are only some embodiments of the present disclosure, rather than all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic diagram of some embodiments of a coupler of the present disclosure. As shown in fig. 1, the coupler of the present disclosure may include an input port 1, a coupled port 2, an output port 3, and an isolated port 4, wherein:
a first degree of coupling of the input port 1 to the coupled port 2 is different from a second degree of coupling of the output port 3 to the isolated port 4.
And the coupler is used for carrying out power equalization processing on signals in two directions of the loop indoor distribution system.
In some embodiments of the present disclosure, the coupler may be used to power equalize a first downstream signal directed from input port 1 to coupled port 2 and a second downstream signal directed from output port 3 to isolated port 4 in a loop indoor distribution system.
In some embodiments of the present disclosure, the power equalization process refers to: and balancing the power of the first downlink signal input by the input port and the power of the second downlink signal input by the output port to reduce the power difference between the first downlink signal and the second downlink signal.
In some embodiments of the present disclosure, the first degree of coupling may be 15dB and the second degree of coupling may be 3dB. In the embodiment of fig. 1, if the power of the first downlink signal input from the input port 1 is 30w, and the power of the second downlink signal input from the output port 3 is 1w, the power of the first downlink signal is 30 times that of the second downlink signal, and the power difference between the first downlink signal and the second downlink signal is large, and the powers are not balanced. Since the first degree of coupling from the input port 1 to the coupled port 2 is 15dB, the power of the first downlink signal output from the coupled port 2 is 30w divided by 31.6, which is equal to 0.95w. Since the second coupling of output port 3 to isolated port 4 is 3dB, the power of the first downlink signal output from isolated port 4 is 1w divided by 2, which is equal to 0.5w. Therefore, after the low-insertion-loss asymmetric coupler disclosed by the invention is used, the difference between the first downlink signal output by the coupling port 2 and the second downlink signal output by the isolation port 4 is not large, so that the purpose of performing power equalization processing on bidirectional signals (the first downlink signal and the second downlink signal) is achieved.
In some embodiments of the present disclosure, the coupler may be further configured to perform power equalization processing on a first upstream signal from the coupled port to the input port and a second upstream signal from the isolated port to the output port in the loop indoor distribution system.
In some embodiments of the present disclosure, the disclosed coupler may be a four-port asymmetric coupler.
The coupler provided based on the above embodiments of the present disclosure is a four-port asymmetric coupler, and can implement signal balance of a passive loop MIMO (multiple input multiple output) indoor subsystem in a low-cost, high-stability, and low-insertion-loss manner.
Fig. 2 is a schematic diagram of other embodiments of a coupler according to the present disclosure. As shown in fig. 2, the coupler of the present disclosure may include an input port 1, a coupled port 2, an output port 3, an isolated port 4, a first coupling unit 5, a circulator 6, and a second coupling unit 7, wherein:
the first port 51 of the first coupling unit 5 is connected to the input port 1, the second port 52 of the first coupling unit 5 is connected to the coupling port 2, and the third port 53 of the first coupling unit 5 is connected to the output port 3 via the circulator 6.
The first port 71 of the second coupling unit 7 is connected to the output port 3 through the circulator 6, the second port 72 of the second coupling unit 7 is connected to the isolation port 4, and the third port 73 of the second coupling unit 7 is connected to the third port 53 of the first coupling unit 5 through the circulator 6.
In some embodiments of the present disclosure, the circulator 6 may be a two-section circulator 6.
In some embodiments of the present disclosure, a first degree of coupling of input port 1 to coupled port 2 is different from a second degree of coupling of output port 3 to isolated port 4. And the coupler is used for carrying out power equalization processing on signals in two directions of the loop indoor distribution system.
In some embodiments of the present disclosure, the coupler may be used to power equalize a first downstream signal from the input port 1 to the coupled port 2 and a second downstream signal from the output port 3 to the isolated port 4 in the loop indoor distribution system.
In some embodiments of the present disclosure, as shown in fig. 2, the coupler may further include an isolator 8, wherein:
the first port 81 of the isolator 8 is connected to the fourth port 54 of the first coupling unit 5, and the second port 82 of the isolator 8 is connected to the fourth port 74 of the second coupling unit 7.
In some embodiments of the present disclosure, as shown in fig. 2, the conducting direction of the isolator may be unidirectional conduction from the second port of the isolator to the first port of the isolator.
In some embodiments of the present disclosure, as shown in fig. 2, the first port 61 of the circulator 6 is connected with the third port 53 of the first coupling unit 5, the second port 62 of the circulator 6 is connected with the output port 3, the third port 63 of the circulator 6 is connected with the first port 71 of the second coupling unit 7, and the fourth port 64 of the circulator 6 is connected with the third port 73 of the second coupling unit 7.
In some embodiments of the disclosure, as shown in fig. 2, the circulator is in one-way conduction in a clockwise direction, the first port of the circulator is in one-way conduction to the second port of the circulator, the second port of the circulator is in one-way conduction to the third port of the circulator, the third port of the circulator is in one-way conduction to the fourth port of the circulator, and the fourth port of the circulator is in one-way conduction to the first port of the circulator.
In some embodiments of the present disclosure, the first coupling unit 5 employs a first coupler having a first degree of coupling.
In some embodiments of the present disclosure, the second coupling unit 7 employs a bridge or a second coupler with different coupling degrees according to the magnitude of the second coupling degree, where the magnitude of the second coupling degree is determined according to the first coupling degree, the first downlink signal power and the second downlink signal power.
In some embodiments of the present disclosure, the first coupler and the second coupler may each be conventional couplers, and the frequency band range of the first coupler and the second coupler may comprise 1710-3600MHz.
In some embodiments of the present disclosure, the first coupling unit may select a conventional coupler with a coupling degree of 5dB, 6dB, 7dB, 10dB, 15dB, 20dB, 40dB, or the like; the second coupling unit can be an electric bridge with the coupling degree of 3dB or a conventional coupler with the coupling degrees of 2dB, 3dB, 5dB, 6dB, 7dB, 10dB, 15dB, 20dB, 40dB and the like.
In some embodiments of the present disclosure, as shown in fig. 2, in a case that the first coupling unit 5 is a first coupler, the first port 51 of the first coupling unit 5 is an input port of the first coupler, the second port 52 of the first coupling unit 5 is a coupling port of the first coupler, the third port 53 of the first coupling unit 5 is an output port of the first coupler, and the fourth port 54 of the first coupling unit 5 is an isolation port (load port) of the first coupler.
In some embodiments of the present disclosure, as shown in fig. 2, in the case that the second coupling unit 7 is a second coupler, the first port 71 of the second coupling unit 7 is an input port of the second coupler, the second port 72 of the second coupling unit 7 is a coupling port of the second coupler, the third port 73 of the second coupling unit 7 is an output port of the second coupler, and the fourth port 74 of the second coupling unit 7 is an isolation port (load port) of the second coupler.
Fig. 2 also shows a schematic diagram of the downstream operation principle of the low insertion loss asymmetric coupler in some embodiments of the present disclosure.
In some embodiments of the present disclosure, as shown in fig. 2, in a case where a first downlink signal (as shown by a thin dashed line in fig. 2) is input into the first coupling unit 5 from the input port 1, the first downlink signal with a small portion of power is output from the coupling port 2 through the first coupling unit 5 (the first coupling degree of the first coupling unit 5 can be independently designed according to needs); the first downlink signal of another part of the power is output through the circulator 6 through the third port 53 of the first coupling unit 5.
As shown in fig. 2, while the first downlink signal is input, a second downlink signal (shown as a thick dashed line in fig. 2) is input into the circulator 6 from the output port 3, the second downlink signal passes through the circulator 6 to reach the second coupling unit 7, and the second downlink signal with partial power is output from the isolation port 4 through the second coupling unit 7; the second downlink signal with another part of power passes through the circulator 6 from the third port 73 of the second coupling unit 7 to the third port 53 of the first coupling unit 5, and is output from the input port 1 through the first coupling unit 5. The second coupling degree (i.e. the back coupling degree) of the second coupling unit of the present disclosure can be independently designed by selecting a bridge or couplers with different coupling degrees as required.
The above embodiments of the present disclosure can balance the bidirectional signals (the first downlink signal and the second downlink signal) as needed through the flexible design of the bidirectional coupling degree.
In some embodiments of the present disclosure, the first downlink signal may be a first downlink signal of a MIMO system; the second downlink signal may be a second downlink signal of the MIMO system.
In some embodiments of the present disclosure, the first coupling unit may be a 15dB first coupler and the second coupling unit may be a 3dB bridge. In the embodiment of fig. 2, if the power of the first downlink signal input from the input port 1 is 30w, and the power of the second downlink signal input from the output port 3 is 1w, the power of the first downlink signal is 2 times that of the second downlink signal, and the power difference between the first downlink signal and the second downlink signal is large, and the powers are not balanced. In the case where the first downlink signal is output from the coupled port 2 through the first coupling unit 5 (the 15dB first coupler), the power of the first downlink signal output from the coupled port 2 is 30w divided by 31.6, which is equal to 0.95w. In the case where the second downlink signal is output from the isolated port 4 via the second coupling unit 7 (3 dB bridge), the power of the first downlink signal output from the isolated port 4 is 1w divided by 2, which is equal to 0.5w. Therefore, after the low-insertion-loss asymmetric coupler disclosed by the invention is used, the difference between the first downlink signal output by the coupling port 2 and the second downlink signal output by the isolation port 4 is not large, so that the purpose of performing power equalization processing on bidirectional signals (the first downlink signal and the second downlink signal) is achieved.
Fig. 3 is a schematic diagram illustrating an upstream operation principle of the low-insertion-loss asymmetric coupler according to some embodiments of the present disclosure.
In some embodiments of the present disclosure, as shown in fig. 3, in a case where a first upstream signal (a thin dotted line shown in fig. 3) is input from the coupling port 2, the first upstream signal is output from the input port 1 through the first coupling unit 5. Specifically, the method comprises the following steps: for the first uplink signal input from the coupling port 2 entering the first coupling unit 5 from the second port (coupling port) 52 of the first coupling unit 5, because the isolator 8 is in one-way conduction, the first uplink signal cannot be output from the fourth port (isolation port) 54 of the first coupling unit 5, and the first uplink signal can only be output from the first port (input port) 51 of the first coupling unit 5 to the input port 1.
As shown in fig. 3, while the first upstream signal is input, a second upstream signal (shown by a thick dotted line in fig. 3) is input from the isolation port 4, and the second upstream signal reaches the fourth port 54 of the first coupling unit 5 through the second coupling unit 7 and the isolator 8, and is output from the output port 3 through the circulator 6.
Specifically, the method comprises the following steps: for the second upstream signal input from the coupling port 4 to enter the second coupling unit 7 from the second port (coupling port) 72 of the second coupling unit 7, a part of the power of the second upstream signal reaches the fourth port (isolation port) 74 of the second coupling unit 7; another part of the power second uplink signal reaches the first port (input port) 71 of the second coupling unit 7, and reaches the third port (output port) 73 of the second coupling unit 7 from the first port 71 of the second coupling unit 7 through the third port 63 and the fourth port 64 of the circulator 6, and then the part of the power second uplink signal also reaches the fourth port (isolation port) 74 of the second coupling unit 7; the second upstream signal of the full power reaches the fourth port (isolation port) 54 of the first coupling unit 5 through the isolator 8, is output from the third port (output port) 53 of the first coupling unit 5 to the circulator, and is output from the output port 3 through the circulator 6.
In some embodiments of the present disclosure, the coupler may be used to power equalize a first upstream signal from the coupled port to the input port and a second upstream signal from the isolated port to the output port in the loop indoor distribution system.
In some embodiments of the present disclosure, the first coupling unit may be a 15dB first coupler and the second coupling unit may be a 3dB bridge. In the embodiment of fig. 3, the power of the first upstream signal input from the coupled port 2 is 2w, and the power of the second upstream signal input from the isolated port 4 is also 2w.
Specifically, as shown in fig. 3, for the first upstream signal input from the coupling port 2 to enter the first coupling unit 5 from the second port (coupling port) 52 of the first coupling unit 5, since the isolator 8 is in one-way conduction, the first upstream signal cannot be output from the fourth port (isolation port) 54 of the first coupling unit 5, and the first upstream signal can only be output to the input port 1 from the first port (input port) 51 of the first coupling unit 5. The coupling degree between the fourth port of the first coupling unit 5 and the first port of the first coupling unit 5 is 15dB, and the first uplink signal output from the input port 1 is 2w divided by 31.6, which is equal to 0.063w.
As shown in fig. 3, after the second uplink signal of 2w input from the coupling port 4 passes through the second coupling unit 7, the second uplink signal of still full power 2w reaches the fourth port (isolation port) 54 of the first coupling unit 5 through the isolator 8, is output from the third port (output port) 53 of the first coupling unit 5 to the circulator, and is output from the output port 3 through the circulator 6. The coupling degree between the fourth port of the first coupling unit 5 and the third port of the first coupling unit 5 is 15dB, so that the second uplink signal output from the output port 3 is 2w divided by 31.6, which is equal to 0.063w.
Therefore, the coupler according to the above embodiment of the present disclosure may be configured to ensure that, when the power of the first uplink signal input by the coupled port is equivalent to the power of the second uplink signal input by the isolated port (for example, both 2 w), the power of the first uplink signal output by the input port and the power of the second uplink signal output by the output port are still equivalent (for example, both 0.063 w).
Fig. 4 is a schematic diagram of yet other embodiments of couplers according to the present disclosure. Compared with the embodiment of fig. 2 or 3, the coupler of the embodiment of fig. 4 may further include a transmission conductor 9, a cavity 10, and a cavity cover 11, in addition to the input port 1, the coupling port 2, the output port 3, the isolation port 4, the first coupling unit 5, the circulator 6, the second coupling unit 7, and the isolator 8.
The four-port asymmetric coupler of the above embodiment of the present disclosure adds a double-section circulator, an isolator and a second coupling unit on the basis of a conventional coupler. The above embodiments of the present disclosure balance bidirectional signals (e.g., the first downlink signal and the second downlink signal) as required through flexible design of bidirectional coupling degree. The above embodiments of the present disclosure may implement signal balance of the passive loop MIMO indoor subsystem in a low-cost, high-stability, low-insertion-loss manner. The insertion loss of the above embodiments of the present disclosure is less than or equal to 1dB; the standing wave of the above-described embodiments of the present disclosure is 1.3 or less.
The embodiment of the disclosure realizes the signal balance of the 3G/4G/5G passive loop indoor distribution system with low cost. The above embodiments of the present disclosure are applicable to balance adjustment of the signal of the loop-type indoor distribution system.
According to another aspect of the present disclosure, a loop indoor distribution system is provided, including a coupler as described in any of the above embodiments (e.g., any of fig. 1-4).
Based on the loop indoor distribution system provided by the above embodiment of the present disclosure, the signal balance of the passive loop MIMO indoor distribution system can be realized through the four-port asymmetric coupler with low cost, high stability and low insertion loss.
Fig. 5 is a schematic diagram of some embodiments of the disclosed signal equalization method. Preferably, this embodiment can be performed by the coupler of the present disclosure. The method may include:
In some embodiments of the present disclosure, the signal equalization method may further include: determining a first degree of coupling of the first coupling unit 5; determining a second coupling degree of the second coupling unit 7 according to the first coupling degree, the first downlink signal power and the second downlink signal power; a first coupling unit 5 of a first degree of coupling and a second coupling unit 7 of a second degree of coupling are selected.
In some embodiments of the present disclosure, step 51 may comprise: and performing power equalization processing on a first downlink signal with the direction from the input port 1 to the coupling port 2 and a second downlink signal with the direction from the output port 3 to the isolation port 4 in the loop indoor distribution system.
In some embodiments of the present disclosure, step 51 may comprise:
step 511, when the first downlink signal (shown as a thin dashed line in fig. 2) is input into the first coupling unit 5 from the input port 1, the first downlink signal with a small power is output from the coupling port 2 through the first coupling unit 5 (the first coupling degree of the first coupling unit 5 can be independently designed according to needs); the first downlink signal of another part of the power is output through the circulator 6 through the third port 53 of the first coupling unit 5.
Step 512, as shown in fig. 2, while the first downlink signal is input, a second downlink signal (shown as a thick dashed line in fig. 2) is input into the circulator 6 from the output port 3, the second downlink signal passes through the circulator 6 to reach the second coupling unit 7, and the second downlink signal with partial power is output from the isolation port 4 through the second coupling unit 7; the second downlink signal with another part of power passes through the circulator 6 from the third port 73 of the second coupling unit 7 to the third port 53 of the first coupling unit 5, and is output from the input port 1 through the first coupling unit 5. The second coupling degree (i.e. the back coupling degree) of the second coupling unit of the present disclosure can be independently designed by selecting a bridge or couplers with different coupling degrees as required.
In some embodiments of the present disclosure, step 51 may further comprise:
step 513, in a case that the first uplink signal (as shown in fig. 3 by the thin dashed line) is input from the coupling port 2, the first uplink signal is output from the input port 1 through the first coupling unit 5;
step 514, as shown in fig. 3, while the first uplink signal is input, a second uplink signal (shown as a thick dashed line in fig. 3) is input from the isolated port 4, and the second uplink signal reaches the fourth port 54 of the first coupling unit 5 through the second coupling unit 7 and the isolator 8, and is output from the output port 3 through the circulator 6.
Based on the signal equalization method provided by the above embodiment of the present disclosure, bidirectional signals (e.g., the first downlink signal and the second downlink signal) can be balanced as needed through a flexible design of bidirectional coupling degree. The above embodiments of the present disclosure may implement signal balance of the passive loop MIMO indoor subsystem in a low-cost, high-stability, low-insertion-loss manner.
The embodiment of the disclosure realizes the signal balance of the 3G/4G/5G passive loop indoor distribution system with low cost. The above embodiments of the present disclosure are applicable to the balance adjustment of the signal of the loop type indoor distribution system.
Thus far, the present disclosure has been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware to implement the steps.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (9)
1. A coupler comprising an input port, a coupled port, an output port, an isolated port, an isolator, a first coupling element, a circulator, and a second coupling element, wherein:
a first coupling degree from the input port to the coupling port is different from a second coupling degree from the output port to the isolation port;
the coupler is used for carrying out power equalization processing on signals in two directions of the loop indoor distribution system;
a first port of the first coupling unit is connected with the input port, a second port of the first coupling unit is connected with the coupling port, and a third port of the first coupling unit is connected with the output port through a circulator;
a first port of the second coupling unit is connected with the output port through a circulator, a second port of the second coupling unit is connected with the isolation port, and a third port of the second coupling unit is connected with a third port of the first coupling unit through a circulator;
a first port of the isolator is connected with a fourth port of the first coupling unit, and a second port of the isolator is connected with a fourth port of the second coupling unit; the conduction direction of the isolator is one-way conduction from the second port of the isolator to the first port of the isolator;
a first port of the circulator is connected with a third port of the first coupling unit, a second port of the circulator is connected with the output port, a third port of the circulator is connected with a first port of the second coupling unit, and a fourth port of the circulator is connected with a third port of the second coupling unit;
the circulator is in one-way conduction in the clockwise direction, the first port of the circulator is in one-way conduction to the second port of the circulator, the second port of the circulator is in one-way conduction to the third port of the circulator, the third port of the circulator is in one-way conduction to the fourth port of the circulator, and the fourth port of the circulator is in one-way conduction to the first port of the circulator.
2. The coupler of claim 1,
and the coupler is used for carrying out power equalization processing on a first downlink signal from the input port to the coupling port and a second downlink signal from the output port to the isolation port in the loop indoor distribution system.
3. The coupler of claim 1,
and the coupler is used for carrying out power equalization processing on a first uplink signal from the coupling port to the input port and a second uplink signal from the isolation port to the output port in the loop indoor distribution system.
4. The coupler of any of claims 1-3,
the first coupling unit adopts a first coupler with a first coupling degree;
the second coupling unit adopts a second coupler with a second coupling degree, wherein the second coupling degree is determined according to the first coupling degree, the power of the first downlink signal and the power of the second downlink signal.
5. The coupler according to any of claims 1-3,
under the condition that the first downlink signal is input into the first coupling unit from the input port, the first downlink signal with partial power is output from the coupling port through the first coupling unit; the first downlink signal of the other part of power passes through the third port of the first coupling unit and is output through the circulator;
under the condition that the second downlink signal is input into the circulator from the output port, the second downlink signal reaches the second coupling unit through the circulator, and the second downlink signal with partial power is output from the isolation port through the second coupling unit; the second downlink signal with the other part of power passes through the circulator from the third port of the second coupling unit to the third port of the first coupling unit, and is output from the input port through the first coupling unit.
6. The coupler according to any of claims 1-3,
when the first uplink signal is input from the coupling port, the first uplink signal is output from the input port through the first coupling unit;
and under the condition that the second uplink signal is input from the isolation port, the second uplink signal reaches the fourth port of the first coupling unit through the second coupling unit and the isolator and is output from the output port through the circulator.
7. A loop indoor distribution system comprising a coupler according to any of claims 1-6.
8. A method of signal equalization, comprising:
use of a coupler according to any of claims 1-6 for power equalization of signals in both directions of a loop indoor distribution system.
9. The signal equalization method of claim 8, further comprising:
determining a first degree of coupling of the first coupling unit;
determining a second coupling degree of the second coupling unit according to the first coupling degree, the first downlink signal power and the second downlink signal power;
and selecting a first coupling unit with a first coupling degree and a second coupling unit with a second coupling degree.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5359331A (en) * | 1990-07-13 | 1994-10-25 | General Microwave Corporation | Monostatic radar system having a one-port impedance matching device |
| CA2399631A1 (en) * | 2002-07-13 | 2004-01-13 | Photonova Inc. | Wavelength translator |
| EP2950449A1 (en) * | 2014-05-28 | 2015-12-02 | Alcatel Lucent | Attenuator |
| CN107681241A (en) * | 2017-11-22 | 2018-02-09 | 福州同创微波通讯技术有限公司 | A kind of two-way cavity coupler and method of work having with frequency combining function |
| CN207199813U (en) * | 2017-08-02 | 2018-04-06 | 深圳市意格尔数字技术有限公司 | A kind of new double fluid is the same as frequency coupler |
| CN110071355A (en) * | 2019-04-18 | 2019-07-30 | 成都芯图科技有限责任公司 | A kind of directional coupler and integrated morphology based on chip |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10374656B2 (en) * | 2012-07-30 | 2019-08-06 | Photonic Systems, Inc. | Same-aperture any-frequency simultaneous transmit and receive communication system |
-
2020
- 2020-05-06 CN CN202010374132.6A patent/CN113629373B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5359331A (en) * | 1990-07-13 | 1994-10-25 | General Microwave Corporation | Monostatic radar system having a one-port impedance matching device |
| CA2399631A1 (en) * | 2002-07-13 | 2004-01-13 | Photonova Inc. | Wavelength translator |
| EP2950449A1 (en) * | 2014-05-28 | 2015-12-02 | Alcatel Lucent | Attenuator |
| CN207199813U (en) * | 2017-08-02 | 2018-04-06 | 深圳市意格尔数字技术有限公司 | A kind of new double fluid is the same as frequency coupler |
| CN107681241A (en) * | 2017-11-22 | 2018-02-09 | 福州同创微波通讯技术有限公司 | A kind of two-way cavity coupler and method of work having with frequency combining function |
| CN110071355A (en) * | 2019-04-18 | 2019-07-30 | 成都芯图科技有限责任公司 | A kind of directional coupler and integrated morphology based on chip |
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