Radio control system, control device, radio control method, and program

Abstract

The purpose of the present invention is to provide a radio wave control system that can perform beam forming for a plurality of signals having different frequencies. The radio wave control system of the present disclosure comprises: a high power amplifier (10) for generating a broadband local signal including a first local signal of a first frequency and a second local signal of a second frequency; a reflective plate (20) for modulating the first local signal and the second local signal when the first local signal and the second local signal are reflected or passed through by periodically arranged antenna elements (22), and forming first modulated signal and second modulated signal into beams in respectively different directions; and a control device (30) for electrically controlling the antenna elements (22) to control the phases of the first local signal and the second local signal incident to the reflective plate (20), thereby controlling the directions toward which beams for the first modulated signal and the second modulated signal are formed.

Description

Technical Field

[0001] The present disclosure relates to a radio wave control system, a control device, a radio wave control method, and a program.

Background Art

[0002] In wireless communication, beamforming is used to expand the coverage area of a base station device. Beamforming enables radio waves to be radiated in a specific direction.

[0003] Patent Document 1 discloses a beamforming technique using a reflectarray and a transmitarray. Specifically, Patent Document 1 discloses the configuration of a wireless transmission system having a main station transmission unit and a base station transmission unit. The main station transmission unit transmits an optical signal intensity-modulated with an RF signal to the base station transmission unit via an optical fiber. The base station transmission unit demodulates the RF signal superimposed on the optical signal by converting the optical signal into an electrical signal, and transmits the radio wave of the RF signal from a transmission antenna to the reflectarray. The radio waves of the RF signal reflected by the reflectarray are in phase and reinforce each other in a specific direction, and a transmission beam is formed in the specific direction.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Patent Document 1 discloses a beamforming method for a single RF signal. On the other hand, studies are underway on a method of RAN (Radio Access Network) sharing for transmitting signals of a plurality of communication carriers from a single base station. The frequencies assigned to each communication carrier are different. Therefore, when a plurality of communication carriers use a single base station, the base station needs to transmit a plurality of RF signals having different frequencies, and furthermore, it is required to form different communication areas for each communication carrier. However, Patent Document 1 only discloses a beamforming method for a single RF signal, and there is a problem that it cannot be applied to a base station that uses a plurality of RF signals having different frequencies.

[0006] One of the objects of the present disclosure is to provide a radio wave control system, a control device, a radio wave control method, and a program capable of performing beamforming on a plurality of signals having different frequencies in view of the above-described problems.

Means for Solving the Problems

[0007] The radio wave control system according to the first aspect of the present disclosure includes a high-power amplifier that generates a broadband local signal including a first local signal of a first frequency and a second local signal of a second frequency, and a first local signal and the second local signal are reflected or transmitted in periodically arranged antenna elements. A reflector that modulates the first local signal and the second local signal to perform beamforming of a first modulated signal and a second modulated signal in different directions, respectively, and electrically controls the antenna elements to control the first local signal and the second local signal incident on the reflector. Control means for controlling the direction of beamforming the first modulated signal and the second modulated signal by controlling the phases of the signals.

[0008] The control device according to the second aspect of the present disclosure includes signal generation means for generating an information signal, and among the broadband local signals transmitted from the high-power amplifier to the reflector, when the first local signal and the second local signal are reflected or transmitted by the antenna elements periodically arranged on the reflector, control means for electrically controlling the antenna elements based on the information signal to control the phases of the first local signal and the second local signal incident on the reflector, thereby controlling the directions in which the first modulated signal and the second modulated signal are beamformed.

[0009] The radio wave control method according to the third aspect of the present disclosure generates an information signal, and when the first local signal and the second local signal among the broadband local signals transmitted from the high-power amplifier to the reflector are reflected or transmitted by the antenna elements periodically arranged on the reflector, electrically controls the antenna elements based on the information signal to control the phases of the first local signal and the second local signal incident on the reflector, thereby controlling the directions in which the first modulated signal and the second modulated signal are beamformed.

[0010] The program according to the fourth aspect of the present disclosure causes a computer to execute generating an information signal, and when the first local signal and the second local signal among the broadband local signals transmitted from the high-power amplifier to the reflector are reflected or transmitted by the antenna elements periodically arranged on the reflector, electrically controlling the antenna elements based on the information signal to control the phases of the first local signal and the second local signal incident on the reflector, thereby controlling the directions in which the first modulated signal and the second modulated signal are beamformed.

Advantages of the Invention

[0011] According to the present disclosure, it is possible to provide a radio wave control system, a control device, a radio wave control method, and a program capable of performing beamforming on a plurality of signals having different frequencies.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

MODE FOR CARRYING OUT THE INVENTION

[0013] (Embodiment 1) Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. A configuration example of a radio wave control system according to Embodiment 1 will be described with reference to FIG. 1. The radio wave control system of FIG. 1 includes a high-power amplifier 10, a reflector 20, and a control device 30. The control device 30 may be a computer device that operates by a processor executing a program stored in a memory.

[0014] The high-power amplifier 10 generates a broadband local signal including a first local signal of a first frequency and a second local signal of a second frequency. The high-power amplifier 10 transmits the generated broadband local signal in the direction of the reflector 20.

[0015] The first frequency and the second frequency may be, for example, frequencies included in a band used for mobile communication. The first frequency may be, for example, a center frequency included in a certain frequency band. The second frequency may also be a center frequency included in a certain frequency band. Further, the first frequency and the second frequency may be different center frequencies in the same frequency band. Or, the first frequency may be included in a frequency band different from the frequency band in which the second frequency is included.

[0016] The local signal may be a signal having the same frequency as the carrier frequency. The local signal may be a signal used to convert the frequency of the information signal to a frequency for transmitting it as a radio signal.

[0017] The broadband local signal may include, for example, local signals of a plurality of frequencies available to a plurality of communication carriers. For example, when communication carrier A can use the first frequency and communication carrier B can use the second frequency, the broadband local signal may be a signal including the first frequency and the second frequency. That communication carrier A can use the first frequency may be equivalently stated as the first frequency being assigned to communication carrier A.

[0018] The high-power amplifier 10 may use, for example, a Traveling Wave Tube (TWT). A traveling wave tube generally has a wider specific band than semiconductors such as silicon and can amplify signals with high output and high efficiency.

[0019] The reflector 20 reflects or transmits the first local signal and the second local signal in the periodically arranged antenna elements 22. At this time, the reflector 20 modulates the first local signal and the second local signal to perform beamforming on the first modulated signal and the second modulated signal in different directions, respectively. The dotted arrows in FIG. 1 indicate that the first modulated signal and the second modulated signal are beamformed in different directions.

[0020] The reflector 20 may be, for example, a metasurface reflector using metasurface technology. For example, the reflector 20 may be a RIS (Reconfigurable Intelligent Surface) reflector.

[0021] The antenna element 22 is disposed on the surface of the reflector 20. The antenna element 22 is an element capable of realizing arbitrary permittivity and permeability. The antenna element 22 is a structure sufficiently small with respect to the wavelength of the radio wave, and may be, for example, a patch antenna. Further, depending on the material used for the antenna element 22, the reflector 20 may be determined to operate as a reflector that reflects radio waves or as a reflector that transmits radio waves. Alternatively, the reflector 20 may be controlled to operate as a reflector that reflects radio waves or as a reflector that transmits radio waves by stacking a glass substrate on the antenna element and adjusting the distance between the glass substrate and the antenna element.

[0022] Beamforming is a state in which radio waves reflected or transmitted by a plurality of antenna elements 22 overlap and the radio waves have directivity in a specific direction. That is, a radio wave having directivity in a specific direction is a state in which a composite wave of radio waves reflected or transmitted by a plurality of antenna elements 22 forms a beam. The reflector 20 transmits or reflects radio waves so that the direction of directivity of the radio wave propagating the first modulated signal is different from the direction of directivity of the radio wave propagating the second modulated signal.

[0023] The modulated signal is a signal generated by modulating a carrier wave using an information signal or the like. The modulated signal may be generated, for example, by changing the phase of a local signal.

[0024] The control device 30 electrically controls the antenna element 22 to control the phases of the first local signal and the second local signal incident on the reflector 20, thereby controlling the direction in which the first modulated signal and the second modulated signal are beamformed. The control device 30 is a device used as control means for electrically controlling the antenna element 22.

[0025] The control device 30 electrically controls a plurality of antenna elements 22 to control the phases of the first signal and the second signal, thereby controlling the direction in which the first signal and the second signal are beamformed. Controlling the phase of a signal may mean changing the phase of the signal or switching the phase of the signal.

[0026] For example, the control device 30 may switch the phase of the radio wave reflected or transmitted by controlling a variable resonance circuit incorporated in the reflector 20. Or, when a plurality of materials with different reflection phases are arranged on the surface of the reflector 20, the control device 30 may switch the phase of the radio wave reflected or transmitted by switching the material used as the antenna element 22. Or, a liquid crystal layer is provided on the surface of the reflector 20, and the control device 30 may control the dielectric constant and switch the phase of the radio wave reflected or transmitted by changing the voltage applied to the reflector 20. The liquid crystal layer may be provided for each reflection element.

[0027] The control device 30 controls the phase so that the radio waves reflected or transmitted by the plurality of antenna elements 22 become a beam having directivity in a specific direction. For example, the control device 30 controls the phase so that the radio wave propagating the first modulated signal becomes a beam having directivity in the first direction. Also, the control device 30 controls the phase so that the radio wave propagating the second modulated signal becomes a beam having directivity in the second direction.

[0028] Furthermore, the control device 30 may modulate the first local signal and the second local signal by multiplying the information signal by the first local signal and the second local signal, and generate the first modulated signal and the second modulated signal.

[0029] In other words, the control device 30 controls the reflector 20 so that the amount of phase rotation of the radio wave of the first frequency reflected or transmitted by the reflector 20 becomes a specific value. Furthermore, the control device 30 controls the reflector 20 so that the amount of phase rotation of the radio wave of the second frequency reflected or transmitted by the reflector 20 becomes a specific value.

[0030] Subsequently, a flowchart regarding the radio wave control method in the control device 30 according to the first embodiment will be described with reference to FIG. 2. The control device 30 generates an information signal (S11). Here, among the broadband local signals transmitted from the high-power amplifier 10 to the reflector 20, the first local signal and the second local signal are reflected or transmitted by the antenna elements periodically arranged on the reflector 20. At that time, the control device 30 electrically controls the antenna element 22 based on the information signal. That is, the control device 30 controls the directions in which the first modulated signal and the second modulated signal are beamformed by controlling the phases of the first local signal and the second local signal incident on the reflector 20 (S12).

[0031] As described above, the radio wave control system according to the first embodiment beamforms signals of a plurality of frequencies in different directions by the reflector 20 reflecting or transmitting the broadband local signal transmitted from the high-power amplifier 10. In addition, the control device 30 can modulate the local signal and further control the directions in which the modulated signals are beamformed by electrically controlling the antenna element 22 arranged on the reflector 20. Thereby, the radio wave control system according to the first embodiment can beamform a plurality of signals having different frequencies in different directions.

[0032] (Second Embodiment) Next, a configuration example of the radio wave control system according to Embodiment 2 will be described with reference to FIG. 3. The radio wave control system in FIG. 3 has a configuration in which filters 41 and 42 are added to the radio wave control system in FIG. 1. Further, in the radio wave control system in FIG. 3, a transmissive reflector 24 is used as the reflector. In the following, detailed descriptions of functions, operations, etc. similar to those of the radio wave control system in FIG. 1 will be omitted. Also, in FIG. 3, two filters, filter 41 and filter 42, are shown, but the number of filters is not limited to two. For example, the same number of filters as the number of communication carriers using the radio wave control system, or a larger number of filters than the number of communication carriers using the radio wave control system may be used.

[0033] Filter 41 transmits a local signal of a specific frequency. Specifically, filter 41 transmits a local signal in a frequency band having a certain width centered on a specific frequency. The specific frequency may be referred to as the center frequency. Filter 42 also transmits a local signal of a specific frequency in the same manner as filter 41. Filter 42 may transmit a local signal of the same frequency as filter 41, or may transmit a local signal of a different frequency. Different frequencies may mean that the bandwidth of one frequency does not overlap with the bandwidth of the other frequency.

[0034] Also, each filter may be assigned to any one of a plurality of groups to group the plurality of filters. Each group includes at least one or more filters. For example, the filters included in group A may transmit local signals of frequencies used by communication carrier A, and the filters included in group B may transmit local signals of frequencies used by communication carrier B. That is, a communication carrier may be assigned to each group. Grouping a plurality of filters may be rephrased as grouping the antenna elements that reflect or transmit the local signals that have passed through each filter. That is, the antenna elements that reflect or transmit the local signals that have passed through the filters included in group A may be used as the antenna elements included in group A.

[0035] The local signal that has passed through the filter is transmitted to the transmissive reflector 24. The local signal transmitted to the transmissive reflector 24 is modulated by a plurality of antenna elements 22 arranged in the transmissive reflector 24 and passes through the transmissive reflector 24 as a modulated signal.

[0036] The control device 30 includes a signal generation unit 32 and a control unit 34. The signal generation unit 32 and the control unit 34 may be software or modules in which processing is executed by a processor executing a program stored in a memory. Alternatively, the signal generation unit 32 and the control unit 34 may be hardware such as a circuit or a chip.

[0037] The signal generation unit 32 generates an information signal. The information signal may be, for example, a signal indicating text data, a signal indicating image data, or a signal indicating video data. Text data, image data, video data, etc. may be referred to as user data. Alternatively, the information signal may be a signal indicating control data used to control the operation of a wireless terminal held by a user. The signal generation unit 32 outputs the information signal to the control unit 34.

[0038] The control unit 34 modulates the local signal incident on the transmissive reflector 24 using the received information signal. For example, the control unit 34 may modulate the local signal by changing the amplitude of the local signal. Alternatively, the control unit 34 may modulate the local signal by changing the phase of the local signal. Alternatively, the control unit 34 may modulate the local signal by changing the amplitude and phase of the local signal. Also, when the control unit 34 receives a plurality of information signals, it may pre-determine which information signal to use to modulate the local signal output from which filter. For example, it may be pre-determined that the information signal regarding communication carrier A is used to modulate the local signal output from the filter included in group A. Further, the control unit 34 may manage by associating each group with the filters included in each group.

[0039] Furthermore, the control unit 34 determines the direction in which the modulated signal obtained by modulating the local signal output from the filter included in each group is beamformed. The direction in which beamforming is performed may be indicated using the phase rotation amount. The phase rotation amount may be, for example, a value indicating the angle between the surface of the reflector 20 and the direction of the beam formed by the transmitted signal.

[0040] The control unit 34 electrically controls the plurality of antenna elements 22 arranged on the reflector 20 so that the modulated signal becomes the modulated signal after being modulated using the information signal and so that beamforming is performed in the determined direction of the modulated signal. Specifically, the control unit 34 may change the voltage applied to the plurality of reflecting elements so that the modulated signal becomes the modulated signal after being modulated using the information signal and so that beamforming is performed in the determined direction of the modulated signal. When a voltage is applied to the plurality of reflecting elements, the phase and amplitude of the local signal change.

[0041] The solid arrows in FIG. 3 indicate the modulated signal after modulating the local signal by controlling the amplitude and phase. The solid arrows in FIG. 3 indicate that two modulated signals with different frequencies are beamformed in different directions.

[0042] So far, the configuration of the radio wave control system using the transmissive reflector 24 as the reflector has been described. However, as shown in FIG. 4, a reflective reflector 26 may be used. FIG. 4 shows a configuration in which a reflective reflector 26 is used instead of the transmissive reflector 24. The solid arrows in FIG. 4 indicate that the local signals output from the filters 41 and 42 are reflected by the reflective reflector 26 and beamformed as the modulated signal. The local signals output from the filters 41 and 42 are modulated when reflected by the reflective reflector 26 and beamformed as the modulated signal.

[0043] Subsequently, the flow of the modulation process according to Embodiment 2 will be described with reference to FIG. 5. First, the signal generation unit 32 generates an information signal (S21). The signal generation unit 32 may generate signals related to the same communication carrier, or may generate signals for each communication carrier.

[0044] Next, the control unit 34 determines a filter that transmits the local signal (S22). The control unit 34 determines a filter that transmits the local signal having a frequency used by the communication carrier associated with the information signal generated in step S21.

[0045] Next, the control unit 34 determines the direction in which the modulated signal after passing through the transmissive reflector 24 or the modulated signal after being reflected by the reflective reflector 26 is beamformed (S23). The direction in which the modulated signal is beamformed may be determined for each communication carrier, for example.

[0046] Next, the control unit 34 further electrically controls the plurality of antenna elements 22 arranged on the reflector 20 so that the modulated signal after being modulated using the information signal is the signal to be modulated and the beam is formed in the determined direction of the signal to be modulated (S24). For example, the control unit 34 may set the timing for modulating the signal related to the communication carrier A to be different from the timing for modulating the signal related to the communication carrier B. That is, the control unit 34 may perform time-division control on the signal related to the communication carrier A and the signal related to the communication carrier B.

[0047] As described above, the radio wave control system according to the second embodiment electrically controls a plurality of reflection elements in order to modulate the local signal in the transmissive reflector 24 or the reflective reflector 26. Further, the radio wave control system electrically controls the plurality of reflection elements in order to form a beam of the modulated signal in a determined direction. Thereby, the radio wave control system can convert the generated information signal into the frequency of the local signal and transmit the signal in a desired direction.

[0048] Also, the radio wave control system shown in FIGS. 3 and 4 may constitute one base station device. A plurality of communication carriers may share one base station device capable of forming beams of signals of a plurality of frequencies in different directions. Thereby, different communication areas may be formed for each communication carrier using one base station device.

[0049] In addition, each filter that transmits a signal of a specific frequency may be provided for each antenna element disposed on the transmissive reflector 24 or the reflective reflector 26. That is, the signal that has passed through one filter may pass through one antenna element 22 disposed on the transmissive reflector 24 or the reflective reflector 26, or may be reflected by one antenna element 22. Alternatively, each filter that transmits a signal of a specific frequency may be associated with two or more antenna elements disposed on the transmissive reflector 24 or the reflective reflector 26. That is, the signal that has passed through one filter may pass through two or more antenna elements 22 disposed on the transmissive reflector 24 or the reflective reflector 26, or may be reflected by two or more antenna elements 22.

[0050] FIG. 6 is a block diagram showing a configuration example of the control device described in the above-described embodiment. Referring to FIG. 6, the control device 30 includes a network interface 1201, a processor 1202, and a memory 1203. The network interface 1201 may be used to communicate with a network node. The network interface 1201 may include, for example, a network interface card (NIC) compliant with the IEEE 802.3 series. IEEE represents the Institute of Electrical and Electronics Engineers.

[0051] The processor 1202 reads and executes software (computer program) from the memory 1203 to perform the processing of the control device 20 described using the flowchart in the above-described embodiment. The processor 1202 may be, for example, a microprocessor, an MPU, or a CPU. The processor 1202 may include a plurality of processors.

[0052] Memory 1203 is composed of a combination of volatile memory and non-volatile memory. Memory 1203 may include storage located away from processor 1202. In this case, processor 1202 may access memory 1203 via an I / O (Input / Output) interface (not shown).

[0053] In the example of FIG. 6, memory 1203 is used to store a group of software modules. Processor 1202 can perform the processing of control device 30 described in the above embodiments by reading out and executing these groups of software modules from memory 1203.

[0054] As described with reference to FIG. 6, each of the processors included in control device 30 in the above embodiments executes one or more programs including a group of instructions (for causing a computer to perform the algorithms described with reference to the drawings).

[0055] In the above example, the program includes a group of instructions (or software code) for causing a computer to perform one or more functions described in the embodiments when loaded into the computer. The program may be stored in a non-transitory computer-readable medium or a tangible storage medium. By way of example and not limitation, the computer-readable medium or tangible storage medium includes random-access memory (RAM), read-only memory (ROM), flash memory, solid-state drive (SSD), or other memory technologies, CD-ROM, digital versatile disc (DVD), Blu-ray (registered trademark) disc, or other optical disc storage, magnetic cassette, magnetic tape, magnetic disk storage, or other magnetic storage devices. The program may be transmitted on a transitory computer-readable medium or communication medium. By way of example and not limitation, the transitory computer-readable medium or communication medium includes electrical, optical, acoustic, or other forms of propagated signals.

[0056] Note that the technical idea in the present disclosure is not limited to the above-described embodiments, and can be appropriately changed without departing from the gist thereof.

[0057] Some or all of the above-described embodiments can be described as follows in the appended claims, but are not limited thereto. (Appended Note 1) A high-power amplifier that generates a broadband local signal including a first local signal of a first frequency and a second local signal of a second frequency, A reflector that modulates the first local signal and the second local signal when reflecting or transmitting the first local signal and the second local signal in periodically arranged antenna elements, and beam-forms a first modulated signal and a second modulated signal in different directions, respectively, Control means for electrically controlling the antenna elements to control the phases of the first local signal and the second local signal incident on the reflector, thereby controlling the directions in which the first modulated signal and the second modulated signal are beam-formed. A radio wave control system comprising: (Appended Note 2) At least one first filter that transmits the first local signal among the broadband local signals output from the high-power amplifier, At least one second filter that transmits the second local signal among the broadband local signals output from the high-power amplifier, further comprising: The control means is The radio wave control system according to Appended Note 1, which controls the phase of the first local signal transmitted through the first filter and controls the phase of the second local signal transmitted through the second filter. (Appended Note 3) The control means is The radio wave control system according to Appended Note 1 or 2, which controls the amplitudes of the first local signal or the second local signal using an information signal to modulate the first local signal and the second local signal. (Appended Note 4) The control means A radio wave control system according to Appendix 3, which modulates the first local signal using a first information signal related to a first communication carrier and modulates the second local signal using a second information signal related to a second communication carrier. (Appendix 5) The control means Assigns each antenna element arranged on the reflector to a first group or a second group, controls the phase of the first local signal using the antenna elements assigned to the first group, and controls the phase of the second local signal using the antenna elements assigned to the second group. A radio wave control system according to any one of Appendices 2 to 4. (Appendix 6) A radio wave control system according to any one of Appendices 1 to 5, which uses a traveling wave tube as the high-power amplifier. (Appendix 7) Signal generation means for generating an information signal, Among the broadband local signals transmitted from the high-power amplifier to the reflector, when the first local signal and the second local signal are reflected or transmitted by the antenna elements periodically arranged on the reflector, the antenna elements are electrically controlled based on the information signal, and the first local signal and the second local signal incident on the reflector are controlled. A control device comprising control means for controlling the direction of beamforming of the first modulated signal and the second modulated signal by controlling the phase. (Appendix 8) The control means A control device according to Appendix 7, which controls the amplitude of the first local signal or the second local signal using an information signal to modulate the first local signal and the second local signal. (Appendix 9) The control means A control device according to Appendix 8, which modulates the first local signal using a first information signal related to a first communication carrier and modulates the second local signal using a second information signal related to a second communication carrier. (Appendix 10) Generate an information signal, Among the broadband local signals transmitted from the high-power amplifier to the reflector, when the first local signal and the second local signal are reflected or transmitted by the antenna elements periodically arranged on the reflector, the antenna elements are electrically controlled based on the information signal, and the phases of the first local signal and the second local signal incident on the reflector are controlled to control the direction in which the first modulated signal and the second modulated signal are beamformed. A radio wave control method. (Appendix 11) Generate an information signal, Among the broadband local signals transmitted from the high-power amplifier to the reflector, when the first local signal and the second local signal are reflected or transmitted by the antenna elements periodically arranged on the reflector, the antenna elements are electrically controlled based on the information signal, and the phases of the first local signal and the second local signal incident on the reflector are controlled to control the direction in which the first modulated signal and the second modulated signal are beamformed. A non-transitory computer-readable medium storing a program that causes a computer to execute the above.

Description of Signs

[0058] 10 High-power amplifier 20 Reflector 22 Antenna element 24 Transmissive reflector 26 Reflective reflector 30 Control device 32 Signal generation unit 34 Control unit 41 Filter 42 Filter

Claims

1. A high-power amplifier that generates a broadband local signal including a first local signal of a first frequency and a second local signal of a second frequency; A reflector that modulates the first local signal and the second local signal when reflecting or transmitting the first local signal and the second local signal in periodically arranged antenna elements, and beam-forms a first modulated signal and a second modulated signal in different directions respectively; Control means for electrically controlling the antenna elements to control the phases of the first local signal and the second local signal incident on the reflector, thereby controlling the directions in which the first modulated signal and the second modulated signal are beam-formed; At least one first filter that transmits the first local signal among the broadband local signals output from the high-power amplifier; At least one second filter that transmits the second local signal among the broadband local signals output from the high-power amplifier, comprising: The control means: Controls the phase of the first local signal transmitted through the first filter and controls the phase of the second local signal transmitted through the second filter. A radio wave control system.

2. The control means: Controls the amplitude of the first local signal or the second local signal using an information signal to modulate the first local signal and the second local signal. The radio wave control system according to claim 1.

3. The control means: Modulates the first local signal using a first information signal related to a first telecommunications carrier and modulates the second local signal using a second information signal related to a second telecommunications carrier. The radio wave control system according to claim 2.

4. The control means: Assigns each antenna element arranged on the reflector to a first group or a second group, controls the phase of the first local signal using the antenna elements assigned to the first group, and controls the phase of the second local signal using the antenna elements assigned to the second group. The radio wave control system according to claim 2 or 3.

5. Using a traveling wave tube as the high-power amplifier. The radio wave control system according to any one of claims 1 to 4.

6. signal generation means for generating an information signal; control means for controlling the direction of beamforming of a first modulated signal and a second modulated signal by electrically controlling the antenna elements based on the information signal when a first local signal and a second local signal among the broadband local signals transmitted from a high-power amplifier to a reflector are reflected or transmitted by the antenna elements periodically arranged on the reflector, thereby controlling the phases of the first local signal and the second local signal incident on the reflector; The control means: controls the amplitude of the first local signal or the second local signal using the information signal to modulate the first local signal and the second local signal; a control device that modulates the first local signal using a first information signal related to a first communication carrier and modulates the second local signal using a second information signal related to a second communication carrier.

7. generates an information signal; when a first local signal and a second local signal among the broadband local signals transmitted from a high-power amplifier to a reflector are reflected or transmitted by the antenna elements periodically arranged on the reflector, electrically controls the antenna elements based on the information signal, and controls the direction of beamforming of the first modulated signal and the second modulated signal by controlling the phases of the first local signal and the second local signal incident on the reflector; when controlling the direction of beamforming of the first modulated signal and the second modulated signal, controls the amplitude of the first local signal or the second local signal using the information signal to modulate the first local signal and the second local signal, modulates the first local signal using a first information signal related to a first communication carrier, and modulates the second local signal using a second information signal related to a second communication carrier; a radio wave control method.

8. generates an information signal; When the first local signal and the second local signal among the broadband local signals transmitted from the high-power amplifier to the reflector are reflected or transmitted by the antenna elements periodically arranged on the reflector, the antenna elements are electrically controlled based on the information signal to control the phases of the first local signal and the second local signal incident on the reflector, thereby controlling the directions in which the first modulated signal and the second modulated signal are beamformed. When controlling the directions in which the first modulated signal and the second modulated signal are beamformed, the amplitude of the first local signal or the second local signal is controlled using the information signal to modulate the first local signal and the second local signal, the first local signal is modulated using the first information signal regarding the first communication carrier, and the second local signal is modulated using the second information signal regarding the second communication carrier. A program for causing a computer to execute the above.

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