CN112953654A - Method, device, system and medium for testing multi-channel antenna - Google Patents
Method, device, system and medium for testing multi-channel antenna Download PDFInfo
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- CN112953654A CN112953654A CN201911268100.1A CN201911268100A CN112953654A CN 112953654 A CN112953654 A CN 112953654A CN 201911268100 A CN201911268100 A CN 201911268100A CN 112953654 A CN112953654 A CN 112953654A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
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Abstract
The invention discloses a method, a device, a system and a medium for testing a multi-channel antenna, wherein the method comprises the following steps: receiving a beam forming instruction and a radio frequency input signal sent by an external directional diagram test system; determining a beam forming weight used by the test according to the beam forming instruction; forming N paths of radio frequency output signals after the radio frequency input signals of all output ports of the output circuit are adjusted according to the beam forming weight, wherein N is the number of channels of the multi-channel antenna; and sending the N paths of radio frequency output signals to a multi-channel antenna to be tested. By adopting the invention, the overall testing efficiency can be greatly improved; the connection error caused by manual operation can be avoided, and the accuracy and objectivity of the test can be greatly improved; the application range is wide, and the test cost is favorably reduced.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, a system, and a medium for testing a multi-channel antenna.
Background
With the development of wireless communication technology, limited wireless frequency resources face an increasing communication demand, and more wireless communication systems introduce multi-channel antennas to improve system capacity, coverage and system throughput.
Technical indexes of the multi-channel antenna are many, wherein an antenna directional diagram is used as an index for representing the capability of the antenna for radiating electromagnetic waves in space, and the performance and the working state of the multi-channel antenna are directly reflected. Therefore, the test for the antenna pattern is particularly important in the whole network coverage engineering.
Since the multi-channel antenna involves a plurality of synthesized beams such as broadcast beams and service beams, the test of the multi-channel antenna on an antenna directional diagram is undoubtedly more complicated than that of a single-channel antenna. The key in the testing process of the multi-channel antenna is to control the input of the beam forming weight (namely, the amplitude/phase weight).
The defects of the prior art are as follows: the existing multi-channel antenna test scheme has low test efficiency.
Disclosure of Invention
The invention provides a method, a device, a system and a medium for testing a multi-channel antenna, which are used for solving the problem of low testing efficiency of the existing multi-channel antenna testing scheme.
The embodiment of the invention provides a method for testing a multi-channel antenna, which comprises the following steps:
receiving a beam forming instruction and a radio frequency input signal sent by an external directional diagram test system;
determining a beam forming weight used by the test according to the beam forming instruction;
forming N paths of radio frequency output signals after the radio frequency input signals of all output ports of the output circuit are adjusted according to the beam forming weight, wherein N is the number of channels of the multi-channel antenna;
and sending the N paths of radio frequency output signals to a multi-channel antenna to be tested.
The embodiment of the invention provides a beam forming weight value switching device, which comprises: a beam forming weight storage unit, a beam forming weight switching control unit and a plurality of beam forming weight output circuits, wherein:
the beam forming weight storage unit is used for constructing a beam forming weight library with a plurality of groups of beam forming weights;
the beam forming weight switching control unit is used for receiving a beam forming instruction, and adjusting the radio frequency input signals of each output port of the beam forming weight output circuit according to the obtained beam forming weight after the corresponding beam forming weight is obtained from the beam forming weight library according to the beam forming instruction;
and the beam forming weight output circuit is used for receiving radio frequency input signals sent by an external directional diagram test system, forming N paths of radio frequency output signals after the beam forming weight switching control unit adjusts the radio frequency input signals, and sending the radio frequency output signals to the multi-channel antenna to be tested, wherein N is the number of channels of the multi-channel antenna.
In an implementation, each beamforming weight output circuit includes: first input, second input and output, wherein:
the first input end of each beam forming weight output circuit is respectively connected with the beam forming switching control unit;
the second input end of each beam forming weight output circuit is respectively connected with the radio frequency input port of the external directional diagram test system;
and the output ends of the beam forming weight output circuits are respectively connected with the radio frequency ports of the multi-channel antenna to be tested in a one-to-one corresponding mode.
The embodiment of the invention provides a method for testing by using a beam forming weight switching device, which comprises the following steps:
a beam forming weight switching control unit receives a beam forming instruction;
the beam forming weight switching control unit acquires a corresponding beam forming weight from the beam forming weight library constructed by the beam forming weight storage unit according to the beam forming instruction;
a beam forming weight output circuit receives a radio frequency input signal sent by an external directional diagram test system;
a beam forming weight value switching control unit adjusts the radio frequency input signals of each output port of the beam forming weight value output circuit according to the obtained beam forming weight value;
after the beam forming weight value switching control unit adjusts the radio frequency input signals, N paths of radio frequency output signals are formed;
and the beam forming weight output circuit sends the formed N paths of radio frequency output signals to a multi-channel antenna to be tested.
The embodiment of the invention provides a test system of a multi-channel antenna, which comprises: a beamforming weight control terminal, a multi-channel antenna to be tested, a directional diagram test system and a beamforming weight switching device, wherein:
the beam forming weight control terminal is used for sending a beam forming instruction to the beam forming weight switching device;
the directional diagram test system is used for sending a radio frequency input signal to the beam forming weight switching device;
the multi-channel antenna is used for receiving the radio frequency output signal sent by the beam forming weight value switching device;
the beam forming weight switching device is used for adjusting the radio frequency input signals of each output port according to the obtained beam forming weight after obtaining the corresponding beam forming weight according to the beam forming instruction; and receiving a radio frequency input signal sent by an external directional diagram test system, adjusting the radio frequency input signal to form N paths of radio frequency output signals, and sending the radio frequency output signals to a multi-channel antenna to be tested.
In implementation, the beam forming weight storage unit of the beam forming weight switching device is located on the beam forming weight switching device or on a beam forming weight control terminal.
The embodiment of the invention provides a method for testing a test system by using a multi-channel antenna, which comprises the following steps:
a beam forming weight control terminal sends a beam forming instruction to the beam forming weight switching device;
the directional diagram test system sends a radio frequency input signal to the beam forming weight value switching device;
after the beam forming weight value switching device obtains a corresponding beam forming weight value according to the beam forming instruction, the radio frequency input signals of all output ports are adjusted according to the obtained beam forming weight value; receiving a radio frequency input signal sent by an external directional diagram test system, forming N paths of radio frequency output signals after adjusting the radio frequency input signal, and sending the radio frequency output signals to a multi-channel antenna to be tested;
and the multi-channel antenna receives the radio frequency output signal sent by the beam forming weight value switching device.
In an implementation, the method further comprises the following steps:
the beam forming weight value switching control unit of the beam forming weight value switching device receives a plurality of groups of beam forming weight values sent by the beam forming weight value control terminal;
the beam forming weight switching control unit sends the multiple groups of beam forming weights to a beam forming weight storage unit;
and the beam forming weight storage unit receives the multiple groups of beam forming weights and then forms a beam forming weight library.
In an implementation, the method further comprises the following steps:
the beamforming weight control terminal receives a plurality of groups of input beamforming weights;
the beam forming weight control terminal sends the multiple groups of beam forming weights to a beam forming weight storage unit on the beam forming weight control terminal;
and the beam forming weight storage unit receives the multiple groups of beam forming weights and then forms a beam forming weight library.
The embodiment of the invention also provides a computer readable storage medium, and the computer readable storage medium stores a computer program for executing the method. These methods include one or a combination of the following: a test method of a multi-channel antenna, a method for testing by using a beam forming weight switching device and a method for testing by using a test system of the multi-channel antenna are provided.
The invention has the following beneficial effects:
by adopting the multi-channel antenna test scheme provided by the embodiment of the invention, the weight is realized by changing the amplitude and the phase of each branch signal, and the amplitude and phase change quantity of each branch in the beam combining and splitting board in the existing scheme is a fixed value, so that the amplitude and phase change quantity of each branch is adjustable in a weight output circuit, and each branch can realize different weights, and finally realize multiple groups of weights.
Furthermore, as the automatic and efficient switching control can be carried out on the multiple groups of beam forming weights in the whole test process, the corresponding beam forming weights can be input to the tested multi-channel antenna in real time and rapidly according to actual needs, and the overall test efficiency can be greatly improved.
Furthermore, the provided device and system are simple in structure, the beam combination and splitting plate is not required to be manually disassembled and assembled for many times, and connection errors caused by manual operation are avoided, so that the accuracy and objectivity of the test can be greatly improved.
Furthermore, the scheme only needs to correspondingly update the beamforming weight library of the beamforming weight storage unit in the beamforming weight switching system, so that the method can be applied to the test of various multi-channel antennas, has a wide application range, and is beneficial to reducing the test cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a multi-channel antenna testing scheme according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an implementation flow of a method for testing a multi-channel antenna according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a beam forming weight switching device in the embodiment of the present invention;
fig. 4 is a schematic diagram of an implementation flow of a method for performing a test by using a beamforming weight switching device in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a beam forming weight switching apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a second beam forming weight switching device in the embodiment of the present invention;
fig. 7 is a schematic diagram of three structures of a beam forming weight switching apparatus in the embodiment of the present invention;
FIG. 8 is a diagram illustrating a testing system for a multi-channel antenna according to an embodiment of the present invention;
FIG. 9 is a flow chart illustrating an embodiment of a method for testing a test system using a multi-channel antenna according to the present invention;
fig. 10 is a schematic flow chart illustrating an implementation of a multi-channel antenna testing method according to an embodiment of the present invention.
Detailed Description
The inventor notices in the process of invention that:
fig. 1 is a schematic diagram of a multi-channel antenna testing scheme, and as shown in fig. 1, in the currently adopted multi-channel antenna testing method, an input method for controlling a beamforming weight is widely adopted:
the input end of a multi-channel antenna with N input ports is connected with a 1 minute N fixed beam forming weight number synthesis success sub-board, and each port of the power sub-board is utilized to input a corresponding fixed beam forming weight number to the multi-channel antenna respectively so as to realize beam synthesis of the multi-channel antenna and test a synthesized beam pattern of the multi-channel antenna.
However, since one power splitter plate can only realize the input of one group of beam forming weights, for a multi-channel antenna, in order to complete the test of different synthesized beam patterns, a plurality of groups of beam forming weights need to be input in sequence, and a plurality of different power splitter plates need to be manufactured correspondingly, so that on one hand, the test cost is high, and on the other hand, one power splitter plate needs to be replaced every time one synthesized beam pattern is tested in the test process, so that the overall test efficiency is low.
It can be seen that the existing multi-channel antenna test scheme has the following disadvantages:
the test cycle is long, the efficiency is low: in the testing process of the multi-channel antenna, due to the fact that different synthesized beams are tested each time, corresponding beams need to be replaced, the combined and split plates are successfully combined, the dismounting and mounting process is complex, a large amount of working hours are consumed, overall testing efficiency is low, and correspondingly, the development cycle of antenna products can be influenced to a large extent.
The test cost is high: because a plurality of beams need to be designed and manufactured to be combined into a splitting plate successfully, and the multi-channel antennas with different weights are difficult to be exchanged and shared, the overall test cost is high, and resource saving is not facilitated.
The objectivity of the test is not strong: because the beam combination is successfully split by manual disassembly and assembly for many times, connection errors are inevitably caused by manual operation, and the test objectivity is not strong.
Based on the scheme, the invention provides an efficient multi-channel antenna testing scheme, which can greatly save the testing time, improve the overall testing efficiency, enhance the testing objectivity and greatly save the testing cost. The following describes embodiments of the present invention with reference to the drawings.
In the description process, in the embodiment of the present invention, an implementation of a method for testing a multi-channel antenna is first provided, then an implementation of a device for switching beamforming weights is provided, then an implementation of a method for testing by using the device is provided, and finally an implementation of a system for testing a multi-channel antenna and a method for testing by using the system is provided.
The beamforming weight switching device and the multi-channel antenna test system are devices and systems that can be used to implement a multi-channel antenna test method, and may be regarded as an example of a multi-channel antenna test method, but a hardware device implementing the multi-channel antenna test method is not limited to the devices and systems provided in the embodiments of the present invention;
the testing method of the testing system using the beam forming weight switching device and the multi-channel antenna is a testing method special for the device and the system, the obtained testing effect is similar to that of the testing method of the multi-channel antenna, the testing time can be saved, the overall testing efficiency is improved, the testing objectivity is enhanced, and meanwhile, the testing cost can be greatly saved.
Fig. 2 is a schematic flow chart of an implementation of a testing method for a multi-channel antenna, as shown in the figure, the method may include:
and step 204, sending the N paths of radio frequency output signals to a multi-channel antenna to be tested.
The following will also describe a specific implementation of the testing method for the multi-channel antenna by taking the apparatus and system provided in the embodiment of the present invention as an example.
The embodiment of the invention also provides a beam forming weight value switching device and a method for testing by using the beam forming weight value switching device, which are explained below.
Fig. 3 is a schematic structural diagram of a beamforming weight switching apparatus, as shown in the figure, the beamforming weight switching apparatus may include: a beamforming weight storage unit 301, a beamforming weight switching control unit 302, and a plurality of beamforming weight output circuits 303, wherein:
a beamforming weight storage unit 301, configured to construct a beamforming weight library with multiple groups of beamforming weights;
a beamforming weight switching control unit 302, configured to receive a beamforming instruction, and adjust a radio frequency input signal of each output port of the beamforming weight output circuit according to the acquired beamforming weight after acquiring a corresponding beamforming weight from the beamforming weight library according to the beamforming instruction;
the beamforming weight output circuit 303 is configured to receive a radio frequency input signal sent by an external directional diagram test system, form N channels of radio frequency output signals after the beamforming weight switching control unit adjusts the radio frequency input signal, and send the N channels of radio frequency output signals to a multi-channel antenna to be tested, where N is a channel number of the multi-channel antenna.
In an implementation, each beamforming weight output circuit includes: first input, second input and output, wherein:
the first input end of each beam forming weight output circuit is respectively connected with the beam forming switching control unit;
the second input end of each beam forming weight output circuit is respectively connected with the radio frequency input port of the external directional diagram test system;
and the output ends of the beam forming weight output circuits are respectively connected with the radio frequency ports of the multi-channel antenna to be tested in a one-to-one corresponding mode.
Fig. 4 is a schematic flow chart of an implementation process of a method for performing a test by using a beamforming weight switching device, as shown in the figure, the method may include:
and step 406, the beam forming weight output circuit sends the formed N paths of radio frequency output signals to a multi-channel antenna to be tested.
The following is a detailed description.
In the multi-channel antenna test scheme provided by the invention, a beam forming weight switching device is adopted to replace the traditional single beam combining success sub-board, the beam forming weight switching device comprises a beam forming weight storage unit, a beam forming weight output circuit and a beam forming weight switching control unit connected with the beam forming weight output circuit, a beam forming property weight library consisting of a plurality of groups of beam forming weights is prestored in the beam forming weight storage unit, the input end of the beam forming weight output circuit is also connected with the radio frequency signal output end of a directional diagram test system, a plurality of output ends of the beam forming weight output circuit are respectively connected with a plurality of radio frequency ports of the multi-channel antenna to be tested, the beam forming weight switching control unit is communicated with a beam forming weight control terminal through a control line so as to receive a beam forming instruction sent by the beam forming weight control terminal, and after a corresponding beamforming weight is obtained from a beamforming weight library in the beamforming weight storage unit according to a beamforming instruction, controlling the beamforming weight output circuit according to the obtained beamforming weight, adjusting amplitude attenuation and phase delay of each output port of the beamforming weight output circuit, and forming N paths of radio frequency output signals after amplitude attenuation and phase delay weighting of the radio frequency input signals received by each output port of the beamforming weight output circuit and sent to the tested multi-channel antenna.
Next, specific constituent elements, circuits, and the like will be described.
(1) And a beam forming weight output circuit.
The wave beam shaping weight output circuit can change the amplitude and the phase of each branch signal, thereby realizing the weight. Compared with the prior art, in the weight output circuit provided by the embodiment of the invention, the amplitude and phase change amount of each branch is adjustable, so that each branch can realize different weights, and finally, a plurality of groups of weights are realized.
The implementation form of the adjustable amplitude phase can be various, for example, it can be: each branch of the beam forming weight output circuit is connected with an amplitude attenuation circuit module and a phase adjustable circuit module in series; the amplitude attenuation circuit is composed of a radio frequency variable attenuator, and the phase adjustable circuit is composed of a radio frequency phase shifter; the method can also be as follows: the desired amplitude phase path is selected by switching the switches.
In specific implementation, the variable attenuator, the radio frequency phase shifter and the switch have the functions of receiving a signal instruction and adjusting corresponding parameters according to the instruction.
(2) And a beam forming weight switching control unit.
The beam forming weight switching control unit has the function of controlling other circuits, and in implementation, the beam forming weight switching control unit controls the circuit states of N output branches of the beam forming output circuit.
The beam forming switching control unit adjusts the attenuation quantity of the radio frequency variable attenuator of each output branch of the beam forming weight output circuit and the phase shift quantity of the phase shifter by controlling the beam forming weight output circuit, so that the amplitude attenuation and the phase delay of each output port of the beam forming weight output circuit can be realized; the specific amplitude attenuation and phase delay of a certain group of N branches correspond to the beam forming weight value appointed in the beam forming instruction.
Fig. 5 is a schematic structural diagram of a first beamforming weight switching device, fig. 6 is a schematic structural diagram of a second beamforming weight switching device, and fig. 7 is a schematic structural diagram of a third beamforming weight switching device, as shown in the figure, the beamforming weight switching device may involve different structures according to practical needs to implement the above functions, for example, as shown in the figure, when the beamforming weight switching device is connected to a beamforming weight control terminal, a beamforming weight output circuit and a beamforming weight switching control unit are provided by the beamforming weight switching device, and a beamforming weight storage unit may be provided by the beamforming weight switching device (as shown in fig. 5), may also be provided by the beamforming weight control terminal (as shown in fig. 7), and may also be provided as an independent unit (as shown in fig. 6).
In order to apply the beamforming weight switching device, the embodiment of the present invention further provides a testing system of a multi-channel antenna and a testing method using the system, which are described below.
Fig. 8 is a schematic structural diagram of a test system of a multi-channel antenna, which may include:
a beamforming weight control terminal 801, a multi-channel antenna 802 to be tested, a directional diagram test system 803, and a beamforming weight switching device 804, wherein:
a beamforming weight control terminal 801, configured to send a beamforming instruction to the beamforming weight switching device;
a directional diagram test system 803, configured to send a radio frequency input signal to the beamforming weight switching device;
a multi-channel antenna 802, configured to receive the radio frequency output signal sent by the beamforming weight switching device;
a beamforming weight switching device 804, configured to adjust the radio frequency input signal of each output port according to the acquired beamforming weight after acquiring the corresponding beamforming weight according to the beamforming instruction; and receiving a radio frequency input signal sent by an external directional diagram test system, adjusting the radio frequency input signal to form N paths of radio frequency output signals, and sending the radio frequency output signals to a multi-channel antenna to be tested.
In implementation, the beam forming weight storage unit of the beam forming weight switching device is located on the beam forming weight switching device or on a beam forming weight control terminal.
Fig. 9 is a schematic flow chart of an implementation of a method for testing a test system using a multi-channel antenna, which may include:
and 904, receiving the radio frequency output signal sent by the beam forming weight value switching device by the multi-channel antenna.
In the implementation, the method can further comprise the following steps:
the beam forming weight value switching control unit of the beam forming weight value switching device receives a plurality of groups of beam forming weight values sent by the beam forming weight value control terminal;
the beam forming weight switching control unit sends the multiple groups of beam forming weights to a beam forming weight storage unit;
and the beam forming weight storage unit receives the multiple groups of beam forming weights and then forms a beam forming weight library.
In the implementation, the method can further comprise the following steps:
the beamforming weight control terminal receives a plurality of groups of input beamforming weights;
the beam forming weight control terminal sends the multiple groups of beam forming weights to a beam forming weight storage unit on the beam forming weight control terminal;
and the beam forming weight storage unit receives the multiple groups of beam forming weights and then forms a beam forming weight library.
The following is a description of the examples.
Fig. 10 is a schematic diagram of an implementation flow of a multi-channel antenna testing method, in which before testing a multi-channel antenna, a beamforming weight library having multiple groups of beamforming weights is first constructed in a beamforming weight storage unit; as shown, the method may include the steps of:
step 1001, the directional diagram test system inputs the radio frequency input signal to the beam forming weight output circuit.
During testing, the radio frequency signal input end of the beam forming weight switching system is connected with the source antenna through the directional diagram testing system, and the directional diagram testing system inputs the radio frequency input signal to the beam forming weight output circuit.
And sending a first beam forming instruction to the beam forming weight switching control unit through the beam forming weight control terminal.
Step 1003, the beam forming switching control unit automatically obtains the beam forming weight from the beam forming weight library of the beam forming weight storage unit according to the beam forming instruction.
The beam forming weight switching control unit can automatically acquire a corresponding first group of beam forming weights in the beam forming weight storage unit according to the beam forming instruction, and adjust the amplitude attenuation and the phase delay of each output port of the beam forming weight output circuit.
Step 1005, the beam forming weight output circuit weights the radio frequency input signal to form N radio frequency output signals and sends the N radio frequency output signals to the tested multichannel antenna.
And step 1006, generating a spatial directional beam by the tested multi-channel antenna.
The beam weight output circuit weights the radio frequency input signals to form N paths of radio frequency output signals and sends the N paths of radio frequency output signals to the tested multi-channel antenna, so that the tested multi-channel antenna generates a first space directional beam.
And step 1008, the directional pattern testing system measures the directional pattern corresponding to the space directional beam of the tested multi-channel antenna through the source antenna.
The source antenna receives the spatial directional beam, and the directional pattern test system measures a first directional pattern test result corresponding to a first spatial directional beam of the tested multi-channel antenna through the source antenna.
And step 1009, judging whether the test is finished, if so, switching to step 1010, and otherwise, switching to step 1002.
Step 1010, the test is completed.
Specifically, a second beam forming instruction is sent to the beam forming weight switching control unit through the beam forming weight control terminal, the beam forming weight switching control unit can automatically acquire a second group of corresponding beam forming weights in the beam forming weight storage unit, and adjust amplitude attenuation and phase delay of each output port of the beam forming weight output circuit, the beam weight output circuit weights the radio frequency input signal to form N paths of radio frequency output signals and sends the radio frequency output signals to the tested multi-channel antenna, so that the tested multi-channel antenna generates a second space directional beam, a directional diagram test system connected with the source antenna receives the space directional beam through the source antenna, and then a second directional diagram test result of the tested multi-channel antenna is obtained; and analogizing in sequence until the M directional diagram test result of the tested multi-channel antenna is measured, and then the directional diagram test of different synthesized beams of the multi-channel antenna can be completed.
It should be understood that the aforementioned 1 st to mth beamforming instructions may include a plurality of beamforming instructions of a broadcast beam and/or a plurality of beamforming instructions of a service beam.
The embodiment of the invention also provides a computer readable storage medium, and the computer readable storage medium stores a computer program for executing the method. These methods include one or a combination of the following: a test method of a multi-channel antenna, a method for testing by using a beam forming weight switching device and a method for testing by using a test system of the multi-channel antenna are provided.
In specific implementation, reference may be made to implementation of a method for testing a multi-channel antenna, a method for testing by using a beamforming weight switching device, and a method for testing by using a testing system of a multi-channel antenna.
In summary, the multi-channel antenna test scheme provided by the embodiment of the present invention can automatically and efficiently control and switch a plurality of groups of beamforming weights by using the beamforming weight switching system in the whole test process, and has at least one of the following effects:
the test of the multi-channel antenna synthetic beam pattern is efficiently completed: in the whole test process, the beam forming weight value switching system can automatically and efficiently control and switch a plurality of groups of beam forming weight values so as to input corresponding beam forming signals to the tested multi-channel antenna in real time and rapidly according to actual needs, thereby greatly improving the overall test efficiency.
The test cost is reduced: the beam forming weight value switching system related to the multi-channel antenna test scheme has a simple structure, can be applied to the test of various multi-channel antennas only by correspondingly updating the beam forming weight value library of the beam forming weight value storage unit, has a wide application range and is beneficial to reducing the test cost.
The objectivity of the test is strong: according to the multi-channel antenna testing scheme, the beams are successfully combined into the sub-board without being manually disassembled and assembled for many times, and the connection error caused by manual operation is avoided, so that the testing accuracy and objectivity can be greatly improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for testing a multi-channel antenna, comprising:
receiving a beam forming instruction and a radio frequency input signal sent by an external directional diagram test system;
determining a beam forming weight used by the test according to the beam forming instruction;
forming N paths of radio frequency output signals after the radio frequency input signals of all output ports of the output circuit are adjusted according to the beam forming weight, wherein N is the number of channels of the multi-channel antenna;
and sending the N paths of radio frequency output signals to a multi-channel antenna to be tested.
2. A device for switching beamforming weights, comprising: a beam forming weight storage unit, a beam forming weight switching control unit and a plurality of beam forming weight output circuits, wherein:
the beam forming weight storage unit is used for constructing a beam forming weight library with a plurality of groups of beam forming weights;
the beam forming weight switching control unit is used for receiving a beam forming instruction, and adjusting the radio frequency input signals of each output port of the beam forming weight output circuit according to the obtained beam forming weight after the corresponding beam forming weight is obtained from the beam forming weight library according to the beam forming instruction;
and the beam forming weight output circuit is used for receiving radio frequency input signals sent by an external directional diagram test system, forming N paths of radio frequency output signals after the beam forming weight switching control unit adjusts the radio frequency input signals, and sending the radio frequency output signals to the multi-channel antenna to be tested, wherein N is the number of channels of the multi-channel antenna.
3. The apparatus of claim 2, wherein each beamforming weight output circuit comprises: first input, second input and output, wherein:
the first input end of each beam forming weight output circuit is respectively connected with the beam forming switching control unit;
the second input end of each beam forming weight output circuit is respectively connected with the radio frequency input port of the external directional diagram test system;
and the output ends of the beam forming weight output circuits are respectively connected with the radio frequency ports of the multi-channel antenna to be tested in a one-to-one corresponding mode.
4. A method for performing a test by using the beamforming weight switching apparatus as claimed in claim 2 or 3, comprising:
a beam forming weight switching control unit receives a beam forming instruction;
the beam forming weight switching control unit acquires a corresponding beam forming weight from the beam forming weight library constructed by the beam forming weight storage unit according to the beam forming instruction;
a beam forming weight output circuit receives a radio frequency input signal sent by an external directional diagram test system;
a beam forming weight value switching control unit adjusts the radio frequency input signals of each output port of the beam forming weight value output circuit according to the obtained beam forming weight value;
after the beam forming weight value switching control unit adjusts the radio frequency input signals, N paths of radio frequency output signals are formed;
and the beam forming weight output circuit sends the formed N paths of radio frequency output signals to a multi-channel antenna to be tested.
5. A system for testing a multi-channel antenna, comprising: a beamforming weight control terminal, a multi-channel antenna to be tested, a directional pattern testing system, and the beamforming weight switching apparatus of claim 2 or 3, wherein:
the beam forming weight control terminal is used for sending a beam forming instruction to the beam forming weight switching device;
the directional diagram test system is used for sending a radio frequency input signal to the beam forming weight switching device;
the multi-channel antenna is used for receiving the radio frequency output signal sent by the beam forming weight value switching device;
the beam forming weight switching device is used for adjusting the radio frequency input signals of each output port according to the obtained beam forming weight after obtaining the corresponding beam forming weight according to the beam forming instruction; and receiving a radio frequency input signal sent by an external directional diagram test system, adjusting the radio frequency input signal to form N paths of radio frequency output signals, and sending the radio frequency output signals to a multi-channel antenna to be tested.
6. The system of claim 5, wherein the beamforming weight storage unit of the beamforming weight switching device is located on the beamforming weight switching device or on a beamforming weight control terminal.
7. A method of testing using a test system for a multi-channel antenna as claimed in claim 5 or 6, comprising:
a beam forming weight control terminal sends a beam forming instruction to the beam forming weight switching device;
the directional diagram test system sends a radio frequency input signal to the beam forming weight value switching device;
after the beam forming weight value switching device obtains a corresponding beam forming weight value according to the beam forming instruction, the radio frequency input signals of all output ports are adjusted according to the obtained beam forming weight value; receiving a radio frequency input signal sent by an external directional diagram test system, forming N paths of radio frequency output signals after adjusting the radio frequency input signal, and sending the radio frequency output signals to a multi-channel antenna to be tested;
and the multi-channel antenna receives the radio frequency output signal sent by the beam forming weight value switching device.
8. The method of claim 7, further comprising:
the beam forming weight value switching control unit of the beam forming weight value switching device receives a plurality of groups of beam forming weight values sent by the beam forming weight value control terminal;
the beam forming weight switching control unit sends the multiple groups of beam forming weights to a beam forming weight storage unit;
and the beam forming weight storage unit receives the multiple groups of beam forming weights and then forms a beam forming weight library.
9. The method of claim 7, further comprising:
the beamforming weight control terminal receives a plurality of groups of input beamforming weights;
the beam forming weight control terminal sends the multiple groups of beam forming weights to a beam forming weight storage unit on the beam forming weight control terminal;
and the beam forming weight storage unit receives the multiple groups of beam forming weights and then forms a beam forming weight library.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of claim 1, 4, 7, 8 or 9.
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