JP2009260598A - Radio apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a configuration for achieving efficient and highly accurate correction of data for correcting the temperature characteristics of a reference oscillation part in radio communication apparatus for generating the transmission/reception frequency of radio communication by the setting of an operation part using a reference signal output from the reference oscillation part. <P>SOLUTION: When performing transmission processing, the radio communication apparatus 300 detects the atmosphere temperature of the reference oscillation part 303 in a temperature detection part 305, reads first correction data to the pertinent temperature from an external storage part 304, then computes the transmission frequency using second correction data stored in an internal storage part 312 and reference channel setting data in an operation setting part 311, modulates predetermined data and transmits them from a high frequency part 301. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wireless device that generates a transmission / reception frequency using a crystal oscillator or an oscillation circuit, and corrects variations in temperature characteristics of an oscillation unit and peripheral circuits.

  A device that performs wireless communication has an oscillation circuit corresponding to a frequency band for performing wireless communication. Oscillator circuits include those composed of passive elements such as capacitors, coils, and resistors, and vibrators using crystals and ceramics.

  These oscillation circuits generally have temperature characteristics. For example, in the case of a circuit using resistors, the resistor itself has a temperature coefficient of at least several tens of ppm to several hundreds of ppm. Therefore, if the circuit does not have a temperature correction circuit, the temperature characteristics of the elements used are added together. It will have the temperature characteristics.

  On the other hand, in the case of an oscillation circuit using crystal, the temperature characteristic is controlled by the cut angle of the crystal piece constituting the crystal resonator. Even in the case of AT cut, which is generally referred to as having good temperature characteristics, it has a temperature characteristic of about 50 ppm between −10 ° C. and 60 ° C., depending on the temperature range.

  In order to reduce these temperature characteristics, there are elements such as TCXO (Temperature Compensated Xtal Oscillator) that compensates for the frequency temperature characteristics. This includes an analog circuit that compensates for the temperature characteristics of the crystal piece, and means for digitally correcting the compensation data using ROM or the like. When it is necessary to accurately correct the temperature characteristics of the crystal or the like and the temperature characteristics of the peripheral circuit, a method of storing correction data in ROM is used instead of a method of correcting by an external element. In this case, when correction is performed with higher accuracy, it is necessary to have a plurality of correction points or to construct correction data with a high-order curve, so it is necessary to increase the capacity of ROM. There was a problem.

  When digital compensation is performed by TCXO, the power supply voltage range of an integrated circuit used for compensation is often limited. In recent years, the environment in which TCXO is used has been reduced in voltage, but it is difficult to cope with a circuit that uses a general manganese, alkali, or lithium battery and directly drives the circuit without smoothing. In addition, when the battery voltage fluctuation range changes within a usable range, the state of the oscillation circuit changes and the output frequency changes slightly due to the configuration of the TCXO when the supplied power supply voltage changes. .

  In addition, there is a method of correcting in the process of taking the output of the crystal resonator into the CPU etc. and dividing and multiplying the output by using a normal crystal resonator, but this also stores the correction data as described above The configuration depends on the ROM capacity.

As means for solving these problems, there is a method of efficiently recording correction data (see, for example, Patent Document 1).
Japanese Patent No. 3419920

However, since the compensation method as described above essentially depends on the ROM capacity, the amount of correction will be greater depending on factors such as changes in the crystal piece, component specifications of peripheral circuits other than crystal, and the board to be mounted. When it is necessary to increase the size, it may not be possible to cope with it. In the first place, TCX
O itself may not be able to cope with, for example, a case where the supplied power greatly fluctuates, and there may be a situation where it cannot be used due to problems such as current consumption.

  Therefore, the present invention solves the above-described problems and can cope with the case where the configuration of the peripheral circuit is changed in addition to the part that controls the oscillation function, such as a crystal piece, or when the correction amount must be changed greatly. An object of the present invention is to provide such correction means.

  In order to solve the above-described conventional problems, a wireless device of the present invention includes a reference oscillation unit that generates a reference signal, a temperature detection unit that detects a temperature around the reference oscillation unit, and an arbitrary temperature in the reference oscillation unit. A first storage unit that stores first correction data indicating the associated frequency deviation; a second correction data that is expressed in a smaller amount of data than the first correction data; and a reference channel that does not include a frequency deviation A second storage unit that stores setting data, and a transmission channel setting by adding the product of the first correction data and the second correction data corresponding to the temperature detected by the temperature detection unit to the reference channel setting data A calculation unit that generates data and a high-frequency unit that modulates and transmits an arbitrary signal based on transmission channel setting data are provided.

  Thereby, it is possible to efficiently correct the transmission frequency deviation caused by temperature characteristics and component variations in the wireless device.

  According to the present invention, in a wireless device using an oscillation circuit that does not have temperature compensation means such as a crystal resonator, when a deviation such as a temperature characteristic changes due to the influence of the oscillation circuit or other peripheral components, Even when a new product is developed by changing the component configuration such as the circuit configuration, the correction can be made with high accuracy without changing the correction means.

  According to a first aspect of the present invention, a reference oscillation unit that generates a reference signal, a temperature detection unit that detects a temperature around the reference oscillation unit, and a frequency deviation associated with each arbitrary temperature in the reference oscillation unit A first storage unit that stores one correction data, a second correction data that is expressed with a data amount smaller than that of the first correction data, and a second reference channel setting data that does not include a frequency deviation. And calculating a transmission channel setting data by adding a product of the first correction data and the second correction data corresponding to the temperature detected by the temperature detection unit to the reference channel setting data And a high-frequency unit that modulates and transmits an arbitrary signal based on the transmission channel setting data, thereby efficiently compensating for a transmission frequency deviation caused by temperature characteristics and component variations in the wireless device. It can be.

  In the second invention, the second correction data described in the first invention is expressed in the same radix as the first correction data, and the number of digits of the second correction data is the number of digits of the first correction data. By expressing it with a smaller number of digits, it is possible to efficiently correct frequency deviations caused by temperature characteristics and component variations in the wireless device while improving the calculation time and improving the efficiency of the storage capacity. .

  According to a third aspect of the present invention, the second storage unit that stores the second correction data described in the second aspect is provided in the calculation unit, so that the calculation time is improved, the storage capacity is improved, and the number of parts is reduced. It is possible to efficiently correct frequency deviations caused by temperature characteristics and component variations in the wireless device, while reducing the size and reducing the size of the wireless device.

According to a fourth aspect of the present invention, there is provided a reference oscillation unit that generates a reference signal, a temperature detection unit that detects a temperature around the reference oscillation unit, and a frequency deviation associated with each arbitrary temperature in the reference oscillation unit. A first storage unit that stores one correction data and second correction data that is smaller in data amount than the first correction data and is expressed for each arbitrary temperature; and a reference that does not include the frequency deviation A second recording unit for storing channel setting data; and adding a product of the first correction data and the second correction data corresponding to the temperature detected by the temperature detection unit to the reference channel setting data. By providing a calculation unit that generates transmission channel setting data and a high frequency unit that modulates and transmits an arbitrary signal based on the transmission channel setting data, the temperature characteristics of the transmission frequency in the wireless device can be efficiently and It can be corrected in accuracy.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to this embodiment.

(Embodiment 1)
First, the temperature characteristics of a crystal resonator and the temperature characteristics when the crystal resonator is mounted on a substrate will be described. The vibration frequency of the crystal resonator is determined by the vibration mode and cut angle of the crystal piece. There are various cutting methods. For example, an AT cut, a BT cut, and the like are used for generating a reference frequency of the radio, and an AT cut having particularly good temperature characteristics is often used. Its cover frequency is recommended from several hundred kilohertz to one hundred megahertz.

  FIG. 1 shows an example of a temperature characteristic 101 of a crystal unit alone and a temperature characteristic 102 when the crystal unit is mounted on a substrate. Here, the horizontal axis indicates the surface temperature of the crystal resonator, and the vertical axis indicates the frequency deviation of the crystal resonator. It can be seen that the difference in frequency deviation increases between the temperature characteristic 101 of the crystal unit alone and the temperature characteristic 102 when the substrate is mounted on the substrate when it is away from the reference temperature (for example, around 25 ° C. for AT cut). This is because when the substrate is mounted from a single crystal unit, the oscillation circuit constants outside the crystal unit, the capacitance included in the substrate itself, and thermal convection changes when mounted on the substrate. .

  On the other hand, in the crystal resonator itself, the cut angle of the crystal piece of the component greatly contributes to variations in temperature characteristics. Since the cut angle of crystal always has a variation range in manufacturing, the temperature characteristic also varies within a certain range. For example, as shown in FIG. 2, the temperature characteristic curve of a crystal resonator changes due to variations in the cut angle of a crystal piece.

  Next, FIG. 3 shows an internal block diagram of the wireless communication device in the first embodiment. The wireless communication device 300 according to the first embodiment of the present invention includes a high frequency unit 301, a calculation unit 302, a reference oscillation unit 303, an external storage unit 304, and a temperature detection unit 305. The calculation unit 302 includes a calculation setting unit 311 and an internal storage unit 312.

  The wireless communication device 300 uses a radio wave for short-range communication used in RFID (Radio Frequency Identification), UWB (Ultra Wide Band), or the like via an antenna for wireless communication. Communication is performed with a wireless communication device different from device 300 based on a predetermined communication protocol. For this purpose, the high-frequency unit 301 in the wireless communication device 300 includes an amplifier circuit, a modulation circuit, a detection circuit, a filter circuit, a demodulation circuit, an encoding circuit, a decoding circuit, a multiplication circuit, a phase synchronization circuit, a charge pump circuit, and a phase difference detection circuit. Circuits such as VCO circuits are included.

  The reference oscillation unit 303 includes an oscillation circuit configured based on a passive component such as a capacitor, a coil, or a resistor, a semiconductor element such as a transistor, a diode, or a composite device, or a ceramic vibrator or crystal using a piezoelectric ceramic. An oscillation circuit is configured using a crystal resonator using a single piece.

The calculation unit 302 includes a sequence for performing calculation settings with the calculation setting unit 311 including a calculation circuit such as a microcomputer, and settings for performing the wireless communication described above (for example, transmission frequency, transmission output, modulation method, frequency It includes an internal storage unit 312 for recording deviation amount, reception frequency, demodulation method, filter setting, automatic frequency control setting).

  The external recording unit 304 is independent of the recording unit configured in the arithmetic unit 302 and is configured by a semiconductor element such as an EPROM (Erasable Programmable ROM) or a flash memory. It is possible to write and store unique data.

  The temperature detection unit 305 includes a sensor for detecting temperature, such as an NTC thermistor, a PTC thermistor, a CTR thermistor, and a semiconductor thermometer, and an element having temperature characteristics, such as an element such as a diode, a capacitor, or a resistor. The temperature detection unit 305 is mounted in the vicinity of the crystal resonator and measures the ambient temperature in the vicinity of the crystal resonator.

  Hereinafter, transmission processing of the wireless communication device according to the embodiment of the present invention will be described. The wireless communication device 300 calls the wireless transmission information such as the transmission output, the modulation method, and the transmission frequency stored in the internal storage unit 312 in the calculation unit 302 to perform transmission according to a predetermined protocol, and sets the calculation. To the unit 311. The calculation setting unit 311 sets and controls the high-frequency unit 301 based on the input wireless transmission information, inputs arbitrary data to be transmitted from the calculation setting unit 311 to the high-frequency unit 301, and modulates according to a predetermined setting. And transmit via the antenna.

  Of the wireless transmission information, the transmission frequency is calculated as follows. In order to set the transmission frequency determined according to the protocol, reference channel setting data (internal storage unit) calculated based on the case where the frequency deviation due to the atmospheric temperature of the reference oscillation unit 303, component variations, etc. is zero 312) is added to compensation data (eigenvalue for each wireless transmitter) for correcting variations including temperature characteristics of the reference oscillation unit 303 and peripheral components. That is, the reference channel setting data depends on the nominal frequency of the high frequency unit 301 or the reference oscillation unit 302. When the same high frequency LSI or crystal oscillator is used and the same setting is used, the same data is used. Become. Therefore, the data is stored in the internal storage unit 312 which is a storage area inside the LSI or the like and having a relatively large capacity. Similarly to the arithmetic processing program, data that can be shared for each model is stored in the internal arithmetic unit 312 as data that can be fixed in advance, which can reduce the manufacturing cost when the wireless device is produced.

  The correction data is stored in the internal storage unit 312, and is unique for each wireless transmitter stored in the first correction data determined in accordance with the configuration of the substrate, the reference transmission unit 303, its peripheral circuit, and the like. The calculation setting unit 311 uses the determined second correction data.

  Here, the first correction data is data for correcting the temperature characteristics of the reference oscillation unit 302, component variations, manufacturing variations, and peripheral component variations, and is unique for each individual. Need to be remembered. Therefore, it is desired to store in the external storage unit 304 which is a nonvolatile memory. Since the second correction data is a correction data component (a component that can be shared) with little variation among individuals among the data describing the variation and the like, the second correction data is stored in the internal storage unit 312 in which the reference channel setting data is stored. be able to.

  Next, specific calculation processing will be described with reference to FIG.

  A description will be given of a transmission frequency in the case of transmitting in 2ch, for example, along the protocol. First, the reference channel setting data (A) recorded in the internal storage unit 312 is read into the calculation setting unit 311. In the case of 2ch, [101011111] is obtained.

Next, the calculation setting unit 311 measures and reads the ambient temperature of the reference oscillation unit 303 from the temperature detection unit 315 in order to calculate correction data. Subsequently, the calculation setting unit 311 searches the external storage unit 304 for the first correction data (B) for the corresponding measured temperature. When the read temperature is 5 ° C., [100000] is obtained. Next, the calculation setting unit 311 reads the second correction data (C) from the internal recording unit 312. Here, [10] is obtained As described above, the calculation setting unit 311 calculates the transmission frequency using the reference channel setting data (A), the first correction data (B), and the second correction data (C). To do. A specific calculation is calculated as transmission frequency = reference channel setting data (A) + first correction data (B) * second correction data (C).

  In the above example, the case where the first correction data (B) corresponding to the temperature detected by the temperature detection unit 305 is present in the external storage unit 304 is shown, but in many cases, the detected temperature remains as it is in the external storage. The correction data is estimated by the calculation setting unit 311 in the calculation unit 302 using the data in the external recording unit 304 that does not exist in the unit 304. For example, when the temperature detected by the temperature detection unit 305 is 30 ° C., the first correction data of 20 ° C. and 40 ° C. can be used, for example, by linear interpolation. Any other estimation method may be used, such as a high-dimensional interpolation curve or a person using a function for each section. In addition, the first correction data in the external storage unit 304 may be processed by developing the stored information in the calculation unit 302 depending on the processing method of the calculation unit 302. In some cases, the search is performed by accessing the external storage unit 304 and accessing the information developed in the calculation unit 302 without searching for the first correction data.

  Next, the first correction data stored in the external storage unit 304 and the second correction data stored in the internal storage unit 311 in the calculation unit 302 will be described.

  The transmission frequency is composed of reference channel setting data and correction data. The reference channel setting data is transmission frequency information when the frequency deviation due to the influence of the ambient temperature of the reference oscillation unit 303, component variations, and the like is 0, whereas the first correction data and the second correction data are Data for correcting a frequency deviation caused by temperature characteristics, component variations, and the like of the reference oscillation unit 303 is shown.

  For example, the case where a curve for correcting a frequency deviation is expressed as shown in FIG. 5 will be described. The correction data is stored as discrete values in the external storage unit 304 or the internal storage unit 311 so that the continuous curve shown in FIG. 5 can be efficiently and accurately interpolated with as little data as possible. For example, in the case of FIG. 5, the correction data is represented by discrete points such as..., A30, a20, a10, a00, a01, a02, a03,. Indicates a frequency deviation with respect to temperature. Therefore, a00 can be expressed as a temperature t00 and a frequency deviation f00, and a01 can be expressed as a temperature t01 and a frequency deviation f01.

  Therefore, when the temperature is determined, correction data for correcting the frequency deviation is determined, and by adding this to the reference channel setting data, transmission frequency information can be determined.

  The transmission frequency information sets a comparison frequency created by a PLL (Phase Locked Loop) in the high frequency unit 301, and generates a transmission frequency. Accordingly, the correction data is increased or decreased by adjusting the transmission frequency by increasing or decreasing the comparison frequency set by the PLL.

Further, the resolution of the frequency that can be set in the high-frequency unit depends on the performance (number of digits) of the PLL and VCO in the high-frequency unit, the register that sets these, and the like. For example, the resolution of the frequency that can be set in the high frequency part per bit of correction data is determined to be 10 hertz.

  On the other hand, the maximum amount that can be corrected is determined by the data amount (size) of the correction data. For example, when the correction data can be expressed by 8 bits and the frequency resolution that can be set is 10 Hz, the value that can be expressed is 255. Therefore, the maximum amount that can be corrected is 255 × 10 Hz and 2550 Hz.

  In the present invention, the maximum correction amount can be expanded by having two correction data, the first correction data and the second correction data.

  Specifically, the correction data is expressed by integrating the first correction data and the second correction data, and indicates a correction eigenvalue (a unique value for each wireless transmitter) at each temperature point. The second correction data is fixed. Expressed as a value. If the second correction data is 1, the minimum resolution that can be set by the high-frequency unit 301 is set. If the correction data is 2, the first correction data is added to the reference channel setting data with a value twice the minimum resolution. It will be. As a result, the maximum amount that can be corrected is a value that is twice or more that when the second correction data is 1.

  A processing flow of the wireless communication device of the first embodiment configured as described above will be described with reference to FIG. FIG. 6 shows a transmission operation flow of the wireless communication device according to the present embodiment.

  First, the calculation setting unit 311 in the wireless communication device 300 turns on the power to the temperature detection unit 305 that detects the ambient temperature in order to obtain correction data for the frequency deviation amount of the reference oscillation unit 303 and the like (S601). Subsequently, the temperature detection unit 305 is controlled by the calculation setting unit 311 in the calculation unit 302 to acquire temperature data (S602).

  Subsequently, the calculation setting unit 311 turns off the power supplied to the temperature detection unit 305 after acquiring the temperature data (S603). Next, the calculation setting unit 311 obtains correction data based on the temperature data acquired in S602. First, a temperature point to which the acquired temperature data applies is searched in the external storage unit 304 in which the first correction data is stored. (S604).

  Similarly, the calculation setting unit 311 reads the section constituted by the two temperature data applied in S604 and the respective first correction data into the calculation setting unit 311 and reads the first correction data for the temperature detected by the temperature detection unit 305, Calculation is performed using an operation such as linear interpolation (S605).

  Subsequently, the first correction data calculated in S605, the second correction data stored in the internal storage unit 312 in the calculation unit 302, and the reference channel data are read into the calculation setting unit 311, and the first correction data calculated in S605 is read. Transmission frequency information is generated using one correction data. At the same time, information necessary for other wireless communication is also read from the internal storage unit 312 and set in a register for controlling the high-frequency unit 301 (S606).

  Next, the power of the high frequency unit 301 is turned on (S607), arbitrary transmission data stored in the internal storage unit 312 is input to the setting calculation unit 311, modulated by the high frequency unit 301, and transmitted from the antenna (S608). .

  As described above, according to the wireless communication device of the first embodiment of the present invention, even when the configuration and characteristics of the reference oscillation unit are changed, the correction data for correcting the characteristics is the first correction data and the second correction data. Therefore, it is possible to cope with various characteristic corrections by having different amounts of data. Although the above processing has been described for wireless transmission, it can also be performed in a reception sequence.

(Embodiment 2)
FIG. 7 is a diagram showing correction data calculation processing in the wireless communication device according to the second embodiment of the present invention. A description of the same parts as those in the first embodiment will be omitted, and an arithmetic process different from that in FIG. 4 will be particularly described.

  The transmission frequency in the wireless transmission information is determined according to the protocol and is calculated as follows. The transmission frequency is composed of reference channel setting data and correction data having a unique value for each wireless device. The correction value data is composed of first correction data and second correction data.

  The reference channel setting data is stored in the internal storage unit 312 and is the transmission frequency information when the frequency deviation due to the influence of the ambient temperature of the reference oscillation unit 303, component variations, etc. is zero, whereas the first correction The data and the second correction data are stored in the external storage unit 304 and are data for correcting a frequency deviation caused by the temperature characteristics of the reference oscillation unit 303, component variations, and the like.

  There are two types of correction data: the first correction data determined by each model, the reference transmitter 303 and its peripheral circuits and configuration, and the second correction data uniquely determined for each wireless transmitter. Are stored in the external storage unit 304.

  The transmission frequency information for transmission will be described below. First, the reference channel setting data (A) recorded in the internal storage unit 312 is read into the calculation setting unit 311. In the case of 2ch, [101011111] is obtained.

  Next, the calculation setting unit 311 measures and reads the ambient temperature of the reference oscillation unit 303 from the temperature detection unit 315 in order to calculate correction data. Subsequently, the calculation setting unit 311 searches the external storage unit 304 for the first correction data (B) and the second correction data (C) for the corresponding measured temperature. When the read temperature is 5 ° C., the first correction data (B) is [100000] and the second correction data (C) is [01].

  From the above, the calculation setting unit 311 calculates the transmission frequency information using the reference channel setting data (A), the first correction data (B), and the second correction data (C). A specific calculation is calculated by transmission frequency information = reference channel setting data (A) + first correction data (B) * second correction data (C).

  In the second embodiment, the second correction data corresponding to each first correction data can also be provided. Thereby, the 2nd correction data multiplied by the value of the 1st correction data can be changed for every correction data. In this case, flexible correction data can be arranged for each temperature in accordance with the temperature characteristics of the reference oscillation unit 303 and how the reference oscillation unit 303 and its peripheral circuits vary. That is, not only can the correction data be efficiently stored, but also the accuracy of the correction data can be changed.

  As described above, according to the wireless communication device of the embodiment of the present invention, even when the configuration and characteristics of the reference oscillation unit are changed, the correction data for correcting the characteristics is the first correction data and the second correction data for each temperature. Thus, it is possible to cope with various characteristic corrections by having different amounts of data.

  Although the above processing has been described for wireless transmission, it can also be performed in a reception sequence.

  The present invention has a wide range of temperature characteristics by holding data for correcting component variations, temperature characteristics, etc. of the reference oscillation unit being used separately for the first correction data and the second correction data. The same correction logic can be used to correct the reference oscillation unit, the reference oscillation unit with complex temperature characteristics, and the possibility of configuring the reference oscillation unit with different parts for each model on the same board. Therefore, it can be applied to all devices that perform wireless communication.

The figure which shows the temperature characteristic at the time of crystal unit and substrate mounting Diagram showing variation in temperature characteristics of crystal unit Wireless communication device internal configuration diagram The figure which shows the calculation of the correction data in a wireless communication apparatus Illustration of correction data Diagram of transmission sequence of wireless communication device FIG. 10 is a diagram illustrating an example of calculation of correction data in the wireless communication device according to the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Crystal oscillator single-piece | unit temperature characteristic 102 Temperature characteristic at the time of mounting a crystal oscillator on a board | substrate 300 Wireless communication apparatus 301 High frequency part 302 Operation part 303 Reference oscillation part 304 External storage part 305 Temperature detection part 311 Operation setting part 312 Internal storage part

Claims (4)

A reference oscillator for generating a reference signal;
A temperature detection unit for detecting a temperature around the reference oscillation unit;
A first storage unit that stores first correction data indicating a frequency deviation associated with each arbitrary temperature in the reference oscillation unit;
A second storage unit that stores second correction data represented by a data amount smaller than the first correction data and reference channel setting data not including a frequency deviation;
An arithmetic unit that generates transmission channel setting data by adding a product of first correction data corresponding to the temperature detected by the temperature detection unit and the second correction data to the reference channel setting data;
A radio apparatus comprising: a high-frequency unit that modulates and transmits an arbitrary signal based on the transmission channel setting data. The second correction data is expressed by the same radix as the first correction data, and the number of digits of the second correction data is expressed by a number of digits smaller than the number of digits of the first correction data. The wireless device according to claim 1. The wireless device according to claim 2, wherein the second storage unit that stores the second correction data is provided in the calculation unit. A reference oscillator for generating a reference signal;
A temperature detection unit for detecting a temperature around the reference oscillation unit;
First correction data indicating a frequency deviation associated with each arbitrary temperature in the reference oscillation unit, and a second correction expressed for each arbitrary temperature with a data amount smaller than that of the first correction data A first storage unit for storing data;
A second recording unit for storing reference channel setting data not including the frequency deviation;
An arithmetic unit that generates transmission channel setting data by adding a product of first correction data corresponding to the temperature detected by the temperature detection unit and the second correction data to the reference channel setting data;
A radio apparatus comprising: a high-frequency unit that modulates and transmits an arbitrary signal based on the transmission channel setting data.