JP6247868B2 - Oscillator and method of manufacturing oscillator - Google Patents

Description

  The present invention relates to an oscillator and a method for manufacturing the oscillator.

  2. Description of the Related Art Conventionally, an oscillator that generates a plurality of subband signals having different frequencies by dividing or multiplying an oscillation signal and outputs any one of the plurality of subband signals is known (for example, , See Patent Document 1). In a conventional oscillator, only a desired subband signal is output by not connecting a circuit that generates all subband signals other than the subband signal to be output to the output side.

JP-A-2005-175698

  By the way, in a high frequency signal circuit in the GHz band, when the end of the wiring is in an open state, the high frequency signal component is reflected and spurious noise is generated. Therefore, spurious noise is prevented from occurring by connecting the end of a circuit that generates a subband signal that is not an output target to the ground via, for example, a 50Ω termination resistor.

  However, when a circuit that generates a subband signal that is not an output target is connected to the ground via a termination resistor, the subband signal that is not an output target generates a subband signal that is an output target via the ground or space. May sneak into the circuit. As a result, there has been a problem that the spurious characteristics of the subband signal to be output may deteriorate.

  Therefore, the present invention has been made in view of these points, and an object thereof is to improve the spurious characteristics of a subband signal output from an oscillator that can switch and use a plurality of subband signals.

  An oscillator according to a first aspect of the present invention includes an oscillation unit that generates an oscillation signal, a plurality of subband signal generation units that generate a plurality of subband signals having different frequencies based on the oscillation signal, An output unit that outputs any one of a plurality of subband signals, and the subband signal that is output from the output unit, and generates the plurality of subband signals based on the selection result A control unit that controls operation modes of a plurality of circuits included in the unit.

  The oscillator further includes a storage unit that stores control information in which signal specifying information for specifying the plurality of subband signals and operation mode information indicating an operation mode of the plurality of subband signal generation units are associated with each other, The control unit may control the operation mode based on the control information stored in the storage unit.

  Each of the plurality of subband signal generation units includes at least one active element and a switch provided at a subsequent stage of the active element, and the switch connects the input side to the output side. The control unit operates in an off mode in which a mode or an input side is connected to the ground, and the control unit sets the switch included in the subband signal generation unit that generates the selected subband signal to an on mode, and the subband The switch provided in at least one subband signal generation unit different from the signal generation unit may be set to an on mode.

  The control unit operates the active element included in the subband signal generation unit that generates the selected subband signal, and is provided in the plurality of subband signal generation units different from the subband signal generation unit The operation of the active element may be stopped.

  Further, the control unit determines the frequency of the subband signal output from the plurality of subband signal generation units, and based on the determined frequency of the subband signal, the plurality of subband signal generation units You may control the operation mode of the several circuit which has.

  An oscillator manufacturing method according to a second aspect of the present invention includes an oscillation unit that generates an oscillation signal and a plurality of subband signal generation units that generate a plurality of subband signals having different frequencies based on the oscillation signal. And an output unit that outputs any one of the plurality of subband signals, and a first selection that selects a subband signal from the plurality of subband signals A second selection step of selecting an operation mode of a plurality of circuits included in the plurality of subband signal generation units, and the subband signal selected in the first selection step is selected in the second selection step. An output step of outputting from the output unit in the operation mode; a measuring step of measuring characteristics of the subband signal output in the output step; The optimal operation corresponding to the subband signal selected in the first selection step based on the characteristics measured in the plurality of measurement steps by repeating the second selection step, the output step, and the measurement step And a determining step for determining a mode.

  The manufacturing method may further include a storage step of storing the operation mode determined in the determination step in a storage unit included in the oscillator in association with the subband signal.

  According to the present invention, it is possible to improve the spurious characteristic of a subband signal output from an oscillator that can switch and use a plurality of subband signals.

It is a figure which shows the structure of the oscillator which concerns on 1st Embodiment. It is a figure which shows an example of a switch control table. It is a figure which shows an example of an active element control table. It is a flowchart which shows the manufacturing method of an oscillator. It is a figure which shows the structure of the oscillator which concerns on 2nd Embodiment. It is a figure which shows an example of a switch control table. It is a figure which shows an example of an active element control table. It is a figure which shows the characteristic of the output signal in the case of outputting a subband signal of 17 GHz (before this invention implementation). It is a figure which shows the characteristic of the output signal in the case of outputting a 17 GHz subband signal (after this invention implementation). It is a figure which shows the characteristic of the output signal in the case of outputting a subband signal of 17 GHz (before this invention implementation). It is a figure which shows the characteristic of the output signal in the case of outputting a 17 GHz subband signal (after this invention implementation).

<First Embodiment>
[Configuration and Operation of Oscillator 1]
FIG. 1 is a diagram illustrating a configuration of an oscillator 1 according to the first embodiment.
The oscillator 1 includes an oscillation unit 10, a divider 11, a divider 12, a plurality of subband signal generation units 20 (a subband signal generation unit 20-1, a subband signal generation unit 20-2, and a subband signal generation unit 20-. 3) The switch 24, the switch 25, the output part 30, the control part 40, and the memory | storage part 50 are provided.

  The oscillating unit 10 generates an oscillation signal. The oscillation unit 10 includes, for example, a phase synchronization circuit and a voltage controlled oscillator. The oscillating unit 10 generates an oscillation signal having a frequency corresponding to the set value input from the control unit 40. The oscillation unit 10 can generate, for example, frequencies of 100 KHz intervals in a frequency band between 4.5 GHz and 9 GHz according to the control of the control unit 40. The oscillation signal generated by the oscillation unit 10 is input to the subband signal generation unit 20-1, the subband signal generation unit 20-2, and the subband signal generation unit 20-3 via the distributor 11 or the distributor 12. The

  The distributor 11 and the distributor 12 distribute the input signal to a plurality of paths. Specifically, the distributor 11 distributes the oscillation signal input from the oscillator 10 to the distributor 12 and the subband signal generator 20-1. The distributor 12 distributes the signal input from the distributor 11 to the subband signal generation unit 20-2 and the subband signal generation unit 20-3.

  The plurality of subband signal generation units 20 generate a plurality of subband signals having different frequencies based on the oscillation signal generated by the oscillation unit 10. Each of the plurality of subband signal generation units 20 includes at least one active element and a switch provided at the subsequent stage of the active element. The active element is, for example, an amplifier, an attenuator, a multiplier or a frequency divider. The switch provided in each of the plurality of subband signal generation units 20 operates in an on mode in which the input side is connected to the output side or in an off mode in which the input side is connected to the ground. In the off mode, the switch connects the input side to the ground via, for example, a 50Ω termination resistor. The switch is a switch composed of a plurality of transistors, for example.

  The sub-band signal generation unit 20-1 includes a multiplier 211 and a switch 212. The multiplier 211 receives a signal from the first frequency (hereinafter, referred to as “first frequency signal”). 1st subband signal) is generated. The multiplier 211 switches between the enable mode and the disable mode based on the control signal CT2-1 input from the control unit 40. The multiplier 211 is in the enable mode when, for example, CT2-1 is a high level logic value, and is in the disable mode when CT2-1 is a low level logic value. The multiplier 211 multiplies the input oscillation signal in the enable mode, does not multiply the input oscillation signal in the disable mode, and does not output the first subband signal.

  The switcher 212 switches between operating in the on mode and operating in the off mode based on the control signal CT1-1 input from the control unit 40. Specifically, the switch 212 connects the first subband signal input from the multiplier 211 to the switch 25 by connecting the input side to the output side when the control signal CT1-1 is at a high level. input. The switch 212 connects the input side to the ground via a termination resistor when the control signal CT1-1 is at a low level.

  The subband signal generation unit 20-2 includes an amplifier 221 and a switch 222, and a second frequency signal (hereinafter referred to as a second frequency signal) obtained by amplifying the oscillation signal received through the distributor 11 and the distributor 12 by the amplifier 221. 2 subband signals). The amplifier 221 enters the enable mode when the control signal CT2-2 input from the control unit 40 has a high level logic value, amplifies the input oscillation signal, and the control signal CT2-2 has a low level logic value. In this case, the mode is disabled, and the input oscillation signal is not amplified.

  The switch 222 enters an on mode when the control signal CT1-2 input from the control unit 40 is at a high level. By connecting the input side to the output side, the second subband signal input from the amplifier 221 is output. Input to the switch 24. The switch 222 enters an off mode when the control signal CT1-2 is at a low level, and connects the input side to the ground via a termination resistor.

  The subband signal generation unit 20-3 includes a frequency divider 231, an amplifier 232, and a switch 233. The subband signal generation unit 20-3 divides the oscillation signal received through the divider 11 and the divider 12 by the divider 231. A three-frequency signal (hereinafter, a third subband signal) is generated. The third subband signal generated by the frequency divider 231 is amplified by the amplifier 232. The amplifier 232 enters the enable mode when the control signal CT2-3 input from the control unit 40 has a high level logic value, and enters the disable mode when the control signal CT2-3 has a low level logic value.

  The switch 233 is in the on mode when the control signals CT1-3 input from the control unit 40 are at a high level, and connects the input side to the output side, so that the third subband signal input from the amplifier 232 is output. Input to the switch 24. The switch 233 enters an off mode when the control signals CT1-3 are at a low level, and connects the input side to the ground via a termination resistor.

  Based on the control signals CT1-4 input from the control unit 40, the switch 24 connects which input side of the two input sides connected to the switch 222 or the switch 233 to the output side. Switch between. Specifically, when the control signals CT1-4 are at a high level, the switch 24 inputs the second subband signal output from the switch 222 to the switch 25, and the control signals CT1-4 are at a low level. In this case, the third subband signal output from the switch 233 is input to the switch 25.

  The switch 25 is a switch equivalent to the switch 24, and based on the control signal CT1-5 input from the control unit 40, of the two input sides connected to the switch 212 or the switch 24, Switch which input side is connected to the output side. Specifically, when the control signal CT1-5 is at a high level, the switch 24 inputs the first frequency signal output from the switch 212 to the output unit 30, and the control signal CT1-5 is at a low level. In this case, the second frequency or the third subband signal output from the switch 24 is input to the output unit 30.

  The output unit 30 is an output terminal connected to the output side of the switch 25, and outputs any one subband signal of a plurality of subband signals based on, for example, control by the control unit 40. That is, the output unit 30 includes a first frequency subband signal generated by the subband signal generation unit 20-1, a second frequency subband signal generated by the subband signal generation unit 20-2, and a subband. One subband signal of the third frequency subband signals generated by the signal generator 20-3 is output.

  The control unit 40 is configured by, for example, a CPU, selects a subband signal output from the output unit 30 by selecting a mode of the switch 24 and the switch 25, and based on the selection result, selects a plurality of subband signals. The operation mode of a plurality of circuits included in the subband signal generation unit is controlled. The control unit 40 includes an input port that receives setting information from the outside, acquires setting information indicating a subband signal to be selected through the input port, and obtains a subband signal based on the acquired setting information. select.

  In addition, the control unit 40 outputs a control signal for controlling the operation modes of the active elements and the switch included in the subband signal generation unit 20-1, the subband signal generation unit 20-2, and the subband signal generation unit 20-3. Output port. For example, the control unit 40 refers to control information described later stored in the storage unit 50 and outputs a control signal suitable for the subband signal to be selected.

  The storage unit 50 is a writable / readable non-volatile memory such as an EEPROM. The storage unit 50 stores control information in which signal specifying information for specifying a plurality of subband signals and operation mode information indicating operation modes of the plurality of subband signal generation units are associated with each other. The signal specifying information is text information assigned to each of the plurality of subband signals. The operation mode information includes logical values of control signals that control the operation modes of the active elements and the switch included in the subband signal generation unit 20-1, the subband signal generation unit 20-2, and the subband signal generation unit 20-3. It is information to show. The storage unit 50 stores a switch control table and an active element control table as control information.

FIG. 2 is a diagram illustrating an example of the switch control table. FIG. 3 is a diagram illustrating an example of the active element control table.
In FIG. 2, the switcher control table generates “BAND1” indicating the subband signal of the first frequency generated by the subband signal generation unit 20-1 and the subband signal generation unit 20-2 as the signal specifying information. It has three pieces of information, “BAND2” indicating the subband signal of the second frequency and “BAND3” indicating the subband signal of the third frequency generated by the subband signal generation unit 20-3. The switch control table includes text information indicated by “1-1” to “1-5” corresponding to the control signals CT1-1 to CT1-5 as switch specifying information.

  The switch control table has data indicating the logical value of the control signal for controlling the switch for each combination of the signal specifying information and the switch specifying information. “H” in FIG. 2 indicates that the logical value is high level, and “L” indicates that the logical value is low level. The control unit 40 reads the control information associated with the selected subband signal and controls the switch 212, the switch 222, the switch 233, the switch 24, and the switch 25.

  Similarly, in FIG. 3, the active element control table has three pieces of information “BAND1”, “BAND2”, and “BAND3” as signal specifying information. The active element control table includes text information indicated by “2-1” to “2-3” corresponding to the control signals CT2-1 to CT2-3 as active element specifying information.

  The active element control table has data indicating the logical value of the control signal for controlling the active element for each combination of the signal specifying information and the active element specifying information. In FIG. 3, “H” indicates that the logical value is high level, and “L” indicates that the logical value is low level. The storage unit 50 reads control information associated with the selected subband signal and controls the multiplier 211, the amplifier 221, and the amplifier 232.

With reference to FIG.2 and FIG.3, the operation mode of a switch and an active element when each subband signal is selected is demonstrated.
When the control unit 40 selects the first subband signal generated by the subband signal generation unit 20-1, the control unit 40 sets CT1-1, CT1-3, and CT1-5 to high level, CT1-2 and CT1-4 are set to low level. Further, the control unit 40 sets CT2-1 to high level and sets CT2-2 and CT2-3 to low level.

  In this case, the multiplier 211 is in the enable mode, and the first subband signal generated by being multiplied by the multiplier 211 is input to the output unit 30 via the switch 212 and the switch 25. Here, since the amplifier 221 and the amplifier 232 are in the disable mode, the second subband signal and the third subband signal are not amplified. Further, the switch 222 is in a state where the output side is connected to the ground via a termination resistor. Therefore, the second subband signal is not output from the output unit 30.

  However, in a state where the first subband signal is selected, since CT1-3 is at a high level, the switch 233 is set to an on mode in which the amplifier 232 and the switch 24 are connected. However, since the switch 24 is set to a mode in which the switch 222 is connected to the switch 25, the third subband signal is not output from the output unit 30.

  When the control unit 40 selects the third subband signal generated by the subband signal generation unit 20-3, the control unit 40 sets CT1-1 and CT1-3 to high level, and sets CT1-2, CT1-4 and CT1-5 are set to low level. Further, the control unit 40 sets CT2-3 to a high level and sets CT2-1 and CT2-2 to a low level.

  In this case, the amplifier 232 enters the enable mode, and the third subband signal generated by frequency division by the frequency divider 231 is amplified by the amplifier 232, and is passed through the switch 233, the switch 24, and the switch 25. Input to the output unit 30. Here, since the multiplier 211 is in the disable mode, the first subband signal is not generated. Since the amplifier 221 is in the disable mode, the second subband signal is not amplified. The switch 222 is in an off mode in which the output side is connected to the ground via a termination resistor.

  However, in a state where the third subband signal is selected, the switch 212 is set to an on mode in which the multiplier 211 and the switch 25 are connected. However, since the switch 25 is set to a mode in which the switch 24 is connected to the output unit 30, the first subband signal is not output from the output unit 30.

  In this way, setting the switch included in the subband signal generation unit other than the subband signal generation unit that generates the subband signal to be output from the output unit 30 to the on mode is, for example, subband signal generation This is effective when the circuit of the unit 20-1 and the circuit of the subband signal generation unit 20-3 are close to each other and are likely to interfere with each other via the ground.

  When the switch 212 is in an off mode for connecting the output side of the multiplier 211 and the ground, the first subband signal generated by the multiplier 211 is transmitted to the subband signal generation unit 20-via the ground. 3 may go around. On the other hand, if the switch 212 is set to connect the multiplier 211 and the switch 25, the first subband signal wraps around the subband signal generation unit 20-3 via the ground. This makes it difficult for the third subband signal output from the subband signal generation unit 20-3 to include spurious noise caused by the first subband signal.

  As described above, the control unit 40 sets the switch included in the subband signal generation unit that generates the selected subband signal to the on mode, and at least one subband signal generation unit different from the subband signal generation unit. Can be set to the on mode. In addition, the control unit 40 operates an active element included in the subband signal generation unit that generates the selected subband signal, and active elements provided in a plurality of subband signal generation units different from the subband signal generation unit. Stop the operation. By doing so, it is possible to improve the spurious characteristics of the output subband signal.

  Depending on the selected subband signal, the operation mode of the active element and the switch depends on the subband signal generation unit 20-1, the subband signal generation unit 20-2, and the subband signal generation unit 20-3. It depends on the circuit arrangement. Therefore, the optimum operation mode corresponding to the selected subband signal is tested in the manufacturing process of the oscillator 1, and control information determined based on the test result is stored in the storage unit 50.

[Manufacturing Method of Oscillator 1]
FIG. 4 is a flowchart showing a method for manufacturing the oscillator 1.
In the manufacturing process of the oscillator 1, first, a first selection process for selecting a subband signal from a plurality of subband signals is performed (S1). In the first selection step, the subband signal is selected by connecting the oscillator 1 to the manufacturing computer and inputting a value set in the manufacturing computer to the control unit 40.

  Subsequently, a second selection step of selecting operation modes of a plurality of circuits included in the plurality of subband signal generation units is performed (S2). In the second selection step, combinations of operation modes of the plurality of active elements and the plurality of switching units included in the plurality of subband signal generation units are displayed on the manufacturing computer. The operation mode is selected by inputting a value indicating the operation mode selected in the manufacturing computer to the control unit 40. The control unit 40 sets the states of the plurality of circuits included in the plurality of subband signal generation units to the selected operation mode.

  Then, the output process which outputs from the output part 30 the subband signal selected in the 1st selection process in the operation mode selected in the 2nd selection process is performed (S3). In this output step, the subband signal is output from the output unit 30.

  Then, the measurement process which measures the characteristic of the subband signal output in an output process is performed (S4). Specifically, the spurious characteristic required for the output signal of the oscillator 1 is measured, and the measurement result is stored in the storage medium in association with the selected subband signal and the selected operation mode.

  The second selection step of S2, the output step of S3, and the measurement step of S4 are repeated for a predetermined number of operation modes (for example, all operation modes) of a plurality of circuits included in the plurality of subband signal generation units. . Specifically, it is determined whether or not the measurement is completed in the predetermined operation mode (S5). If the measurement in the predetermined operation mode is not completed, the process returns to S2 and the measurement is performed in the next operation mode. Done.

  When the measurement in the predetermined operation mode is completed, a determination step for determining an operation mode in which an optimum characteristic is obtained is executed based on the characteristic measured in the measurement step (S6). When the operation mode in which the optimum characteristic is obtained is determined, a storage process is executed in which the determined operation mode is stored in the storage unit 50 of the oscillator 1 in association with the subband signal (S7).

  Subsequently, it is determined whether or not the processes from S2 to S7 have been executed for all the subband signals (S8), and the execution of the processes from S2 to S7 is completed for all the subband signals. If not, the processes from S2 to S7 are repeated.

  As described above, according to the oscillator 1 according to the present embodiment, the control unit 40 selects a subband signal from the plurality of subband signals, and the plurality of subband signal generation units are based on the selection result. The operation mode of the plurality of circuits is controlled. Accordingly, since the signal path in the other subband signal generation unit can be switched according to the subband signal output from the oscillator 1, it is possible to prevent other subband signals from wrapping around and improve the spurious characteristics. it can.

<Second Embodiment>
FIG. 5 is a diagram illustrating a configuration of the oscillator 1 according to the second embodiment. The oscillator 1 shown in FIG. 5 includes a plurality of oscillation sources, and a total of eight subband signals can be output by the eight subband signal generation units. The control unit 40 controls the operation modes of a plurality of active elements and a switch provided between the plurality of oscillation sources and the output unit 30. In FIG. 5, AMP is an amplifier, ATT is an attenuator, CPL is a divider, DBL is a multiplier, DIV is a frequency divider, LPF is a low-pass filter, HPF is a wide-pass filter, and SW is a switch.

FIG. 6 is a diagram illustrating an example of the switch control table. FIG. 7 is a diagram illustrating an example of the active element control table.
According to the active element control table of FIG. 7, the active element on the path that generates the subband signal selected to be output is set to the enable mode, and the active element on the path that generates the other subband signal is It can be seen that the disabled mode is set. Further, according to the switch control table of FIG. 6, the switch on the path for generating the subband signal selected to be output is set to the on mode, and the switch on the path for generating another subband signal is set. It can be seen that the device is set to switch between the on mode and the off mode based on the selected subband signal. When the attenuator is set to the disable mode, the attenuation amount of the attenuator is set to the maximum.

  As described above, the present invention can be applied to an oscillator that outputs an arbitrary number of subband signals, and is not limited to the configuration of a circuit that generates subband signals.

<Third Embodiment>
In the above description, it has been described that the frequency of the subband signal generated by the plurality of subband signal generation units is predetermined. However, the control unit 40 determines the frequencies of the subband signals output from the plurality of subband signal generation units 20, and the plurality of subband signal generation units 20 have the frequency based on the determined subband signal frequencies. The operation mode of a plurality of circuits may be controlled.

  That is, the control unit 40 switches the frequency of the subband signal output from each subband signal generation unit 20 within the frequency band that can be generated by each subband signal generation unit 20, and each subband signal of each frequency. In addition, the operation mode of the active element and the switching unit included in the other subband signal generation unit 20 is switched. In this case, the storage unit 50 stores control information indicating the operation mode of the active element and the switching unit in association with the frequencies of the subband signals generated by the plurality of subband signal generation units 20, and the control unit 40 Based on the control information stored in the unit 40, the plurality of subband signal generation units 20 are controlled.

<Example>
8A and 8B are diagrams illustrating the characteristics of an output signal when a 17 GHz subband signal is output. The horizontal axis indicates the frequency, and the vertical axis indicates the output power. The respective characteristics when the amplifier included in the subband signal generation unit that generates the subband signal is enabled and when the amplifier is disabled are illustrated.

  FIG. 8A shows characteristics when the present invention is not implemented, and was measured in a state in which the switching unit of the subband signal generation unit other than the subband signal generation unit that generates the 17 GHz subband signal is set to the off mode. Is. FIG. 8B shows characteristics when the present invention is implemented, in a state where the switching unit of a predetermined subband signal generation unit other than the subband signal generation unit that generates a 17 GHz subband signal is set to the on mode. It is measured.

In FIG. 8A, even when the amplifier included in the subband signal generation unit that generates a desired subband signal is turned off, a 17 GHz signal is output, and the power difference at the time of on / off is 53.0 dBc. . This signal is considered to be a spurious component that wraps around from other subband signal generation units.
On the other hand, in FIG. 8B, when the amplifier included in the subband signal generation unit that generates a desired subband signal is turned off, a 17 GHz signal is not output, and the power difference at the time of on / off is 68. It can be seen that the spurious component does not wrap around from other subband signal generation units.

9A and 9B are diagrams in which the frequency range of FIGS. 8A and 8B is widened.
FIG. 9A shows characteristics when the present invention is not carried out, and it can be seen that spurious components appear at a frequency different from the desired frequency. The difference between the power of the desired subband signal and the power of spurious noise was 32.8 dBc.

  FIG. 9B shows characteristics when the present invention is implemented. The spurious signal seen in FIG. 9A is not seen, and the difference between the power of the desired subband signal and the power of the spurious component in FIG. 9A is 32. It can be seen that at the frequency of .8 dBc, the difference between the power of the desired subband signal and the power of the spurious component is improved to 60.2 dBc.

  From the above examples, it was confirmed that a subband signal in which spurious components are suppressed can be generated by implementing the present invention.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

1 Oscillator 10 Oscillator 11 Divider 12 Divider 20 Subband Signal Generator 24 Switcher 25 Switcher 30 Output Unit 40 Control Unit 50 Storage Unit 211 Multiplier 212 Switcher 221 Amplifier 222 Switcher 231 Frequency Divider 232 Amplifier 233 Selector

Claims (6)

An oscillation unit for generating an oscillation signal;
At least one active element; and a switch provided in a subsequent stage of the active element and operating in an on mode in which the input side is connected to the output side or in an off mode in which the input side is connected to the ground. A plurality of subband signal generation units that generate a plurality of subband signals each having a different frequency;
An output unit that outputs any one of the plurality of subband signals;
The sub-band signal output from the output unit is selected, the switch included in the sub-band signal generation unit that generates the selected sub-band signal is set to an on mode, and is different from the sub-band signal generation unit. A controller that controls an operation mode of a plurality of circuits included in the plurality of subband signal generation units by setting the switch provided in at least one subband signal generation unit to an on mode ;
An oscillator comprising: A storage unit for storing control information that associates signal specifying information for specifying the plurality of subband signals with operation mode information indicating an operation mode of the plurality of subband signal generation units;
The control unit controls the operation mode based on the control information stored in the storage unit.
The oscillator according to claim 1. The control unit operates the active element included in the subband signal generation unit that generates the selected subband signal, and is provided in the plurality of subband signal generation units different from the subband signal generation unit Stop the operation of the active element,
The oscillator according to claim 1 or 2 . The control unit determines the frequency of the subband signal output from the plurality of subband signal generation units, and the plurality of subband signal generation units have a frequency based on the determined frequency of the subband signal. Control the operation mode of multiple circuits,
The oscillator according to any one of claims 1 to 3 . An oscillation unit for generating an oscillation signal;
At least one active element; and a switch provided in a subsequent stage of the active element and operating in an on mode in which the input side is connected to the output side or in an off mode in which the input side is connected to the ground. A plurality of subband signal generation units that generate a plurality of subband signals each having a different frequency;
An output unit that outputs any one of the plurality of subband signals;
A method of manufacturing an oscillator comprising:
A first selection step of selecting a subband signal from the plurality of subband signals;
A second selection step of selecting operation modes of a plurality of circuits included in the plurality of subband signal generation units;
The switch included in the subband signal generation unit that generates the subband signal is set to the on mode, and the switch provided in at least one subband signal generation unit different from the subband signal generation unit is turned on. A setting step for setting the state of the plurality of circuits included in the plurality of subband signal generation units to the selected operation mode by setting the mode;
An output step of outputting the subband signal selected in the first selection step from the output unit in the operation mode selected in the second selection step;
A measurement step of measuring characteristics of the subband signal output in the output step;
The operation mode corresponding to the subband signal selected in the first selection step based on the characteristics measured in the plurality of measurement steps by repeating the second selection step, the output step, and the measurement step. A determination step for determining
An oscillator manufacturing method comprising: A storage step of storing the operation mode determined in the determination step in a storage unit included in the oscillator in association with the subband signal;
The method for manufacturing an oscillator according to claim 5 .