JPH09252264A - Radio unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the influence of variance of the output frequency of a synthesizer that is caused by the variance of power voltage due to the ON/OFF operations of a transmitting part in the time division multiplex communication by providing the regulator of the synthesizer separately from the regulators which are used in other blocks. SOLUTION: A 1st regulator 2 is prepared to convert the voltage of a battery 1 into the desired voltage and supplies this voltage to a transmitting part 3, a receiving part 4 and a base band signal processing part 6 together with a 2nd regulator 7 which is placed separately from the regulator 2 and converts the voltage of the battery 1 into the desired one to supply it to a synthesizer 5. The input voltage of the regulator 7 is always varied by the ON/OFF operations of the part 3 and this variance, however, can be reduced by the ripple rejection performance of the regulator 7. Thus the stable voltage can always be supplied to the synthesizer 5 despite the ON/OFF operations of the part 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless device, and more particularly to a portable wireless terminal used in a time division multiplex communication system.

[0002]

2. Description of the Related Art A conventional radio device is constructed as shown in FIG. In the figure, the battery 1 supplies a voltage to the regulator 2. The regulator 2 converts the voltage of the battery 1 into a desired voltage. The synthesizer 5 supplies a high frequency signal to the transmitter 3 and the receiver 4. Baseband signal processing unit 6
Supplies the modulated signal to the transmitter 3 and demodulates the signal from the receiver 4.

In the conventional radio device having such a configuration, all power supply voltages are supplied from one regulator (regulator 2 in the figure). Generally, in the wireless device, the transmitter 3 requires a larger current than other blocks. For example, a transmitter in a wireless device that outputs a transmission output of about 10 mW is about 300 mA to 500 m.
A current of A is required.

On the other hand, in the synthesizer 5, the characteristic deterioration due to the fluctuation of the power supply voltage, especially the fluctuation of the output frequency is very large. For example, when the power supply voltage fluctuates by several tens to several hundreds μV, the fluctuation of the output frequency may reach several kHz. Therefore, the output frequency of the synthesizer 5 fluctuates greatly due to fluctuations in the output voltage of the regulator 2 caused by turning on / off the transmitter 3.

For example, assuming that the total value of the internal resistance of the battery 1 and the wiring resistance between the battery 1 and the regulator 2 is 0.1Ω, the regulator 2 when the transmitter 3 is turned on / off.
Of the output voltage varies up to several mV, and the frequency of the synthesizer 5 resulting therefrom may be several tens of kHz. In the conventional wireless device, since the transmitter 3 is not turned on / off during a call, the frequency fluctuation of the synthesizer 5 as described above does not pose a problem.

However, with the recent digitization of mobile communications, the number of cases in which the transmitter 3 is intermittently operated has increased as time-division multiplex communication has become mainstream. Therefore, the output of the synthesizer 5 depending on whether the transmitter 3 is turned on or off. The problem of frequency fluctuation is highlighted.

[0007] As described above, the transmitter 3 is used in the conventional radio device.
When used in a system of a time division multiplex communication system which operates intermittently, there is a problem that the oscillation frequency variation of the synthesizer 5 becomes large due to the variation of the power supply voltage accompanying the ON / OFF of the transmitter 3.

Further, the conventional wireless device has a second problem described below. The problem is that the high frequency signal of the transmitter 3 leaks to the synthesizer 5 through the power supply line, and the purity of the output signal of the synthesizer 5 affected by the influence deteriorates.

Particularly, in the direct modulation system in which the oscillation output of the synthesizer 5 and the carrier frequency of the modulated wave to be transmitted are equal, this problem is serious, and the deterioration of the modulation accuracy due to the deterioration of the purity of the oscillation signal of the synthesizer 5 is serious. In an extreme case, it may be impossible to transmit at a desired transmission power due to the sneak of the transmitted wave to the synthesizer 5.

[0010]

As described above, the conventional wireless device has a problem that the oscillation frequency of the synthesizer 5 fluctuates due to the fluctuation of the power supply voltage due to the ON / OFF of the transmitter 3. Further, there is a problem that the purity of the output signal of the synthesizer 5 deteriorates due to the signal of the transmitter 3 leaking to the synthesizer 5 through the power line.

The radio device of the present invention has been made in view of such a problem, and its purpose is to prevent the oscillation frequency of the synthesizer from fluctuating due to the turning on / off of the transmitting unit, and An object of the present invention is to provide a radio device in which the purity of the output signal of the synthesizer is not deteriorated due to the signal wraparound.

[0012]

In order to achieve the above object, a wireless device according to a first aspect of the present invention supplies a high frequency signal to a transmitter, a receiver, and the transmitter and the receiver. A baseband signal processing unit that supplies a modulated signal to the synthesizer and the transmitting unit, and demodulates the signal from the receiving unit, and converts the battery voltage to a desired voltage, and the transmitting unit and the receiving unit. And a first regulator to be supplied to the baseband signal processing unit, and a second regulator which is provided separately from the first regulator, converts the battery voltage into a desired voltage and supplies the desired voltage to the synthesizer. To have.

A radio device according to a second invention is the radio device according to the first invention, wherein the battery includes a first battery, and a second battery provided separately from the first battery, The first
Is connected to the first regulator, and the second battery is connected to the second regulator.

The radio device according to the third aspect of the present invention includes a transmitter, a power amplifier for amplifying the output of the transmitter, a receiver, and a synthesizer for supplying a high frequency signal to the transmitter and the receiver. A baseband signal processing unit that supplies a modulated signal to the transmitting unit and demodulates a signal from the receiving unit, and converts the voltage of the battery into a desired voltage, the transmitting unit and the receiving unit, and A first regulator that supplies the baseband signal processing unit and the synthesizer, and a second regulator that is provided separately from the first regulator, converts the battery voltage into a desired voltage, and supplies the converted voltage to the power amplifier. And.

A radio device according to a fourth aspect of the present invention is the radio device according to the first aspect, wherein the grounds of the synthesizer and the second regulator are separated from the grounds of other blocks, and the two grounds are separated from each other. Connect to one end of the battery.

Further, a radio equipment according to a fifth aspect of the present invention is the radio apparatus according to the second aspect, wherein the synthesizer, the second regulator and the second battery are grounded, and the first battery and the other blocks are grounded. Provide separately.

Further, a radio apparatus according to a sixth aspect of the present invention is the radio apparatus according to the fifth aspect, wherein the synthesizer, the second regulator and the second battery are shielded. Also, the seventh
In the second invention, the radio device according to
A first conversion element for converting the output of the regulator into an optical signal, and a second conversion element for converting the optical signal into an electric signal and supplying the electric signal to the synthesizer.

Also, the radio equipment according to an eighth invention is the radio equipment according to the seventh invention, wherein a third conversion element for converting the output of the synthesizer into an optical signal and the optical signal is converted into an electric signal and transmitted. A fourth conversion element to be supplied to the receiving section, a fifth conversion element to convert the output of the synthesizer into an optical signal, and a sixth conversion element to convert the optical signal into an electrical signal and supply it to the receiving section
And a conversion element.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the configuration of the first embodiment of the present invention. In the figure, a battery 1 supplies a voltage to a first regulator 2 and a second regulator 7. The first regulator 2 converts the voltage of the battery 1 into a desired voltage and supplies the voltage to the transmitter 3, the receiver 4, and the baseband signal processor 6. The synthesizer 5 supplies a high frequency signal to the transmitter 3 and the receiver 4. The baseband signal processing unit 6 supplies the modulated signal to the transmitting unit 3 and demodulates the signal from the receiving unit 4. The second regulator 7 converts the voltage of the battery 1 into a desired voltage and supplies the voltage to the synthesizer 5.

Next, the operation of the radio device according to the first embodiment of the present invention will be described. When the usage method corresponding to the time division multiplex communication system is used, the transmission unit 3 is turned on in the transmission slot and turned off in the other slots. As a result, as described in the conventional example, the output voltage of the first regulator 2 fluctuates due to the internal resistance and the wiring resistance of the battery 1.
However, since the second regulator 7 supplies power to the synthesizer 5, which is the weakest against fluctuations in power supply voltage, the fluctuations in the power supply voltage are small.

This is because it is inevitable that the input voltage of the second regulator 7 fluctuates depending on whether the transmitter 3 is turned on or off, but the output voltage of the second regulator 7 usually fluctuates due to the ripple rejection property of the second regulator 7. 40-6
It is reduced by about 0 dB. Therefore, stable voltage supply is always performed to the synthesizer 5 even when the transmitter 3 is turned on / off. Therefore, the frequency fluctuation of the synthesizer output is reduced at a rate of 40 to 60 dB as compared with the conventional case.

Further, by separating the regulator, there is an effect of preventing the high frequency signal of the transmitter from leaking into the power line of the synthesizer via the output terminal of the regulator, and the purity of the synthesizer output is greatly improved.

The second embodiment of the present invention will be described below. FIG. 2 is a diagram showing the configuration of the second exemplary embodiment of the present invention. In the figure, a first battery (equivalent to the battery 1 shown in FIG. 1) 1 supplies a voltage to a first regulator 2. The first regulator 2 converts the voltage of the first battery 1 into a desired voltage, and the transmitter 3, the synthesizer 5, and the like.
It is supplied to the receiving unit 4. The synthesizer 5 supplies a high frequency signal to the transmitter 3 and the receiver 4. The baseband signal processing unit 6 supplies the modulated signal to the transmitting unit 3 and demodulates the signal from the receiving unit 4. The second regulator 7 converts the voltage of the second battery 8 into a desired voltage,
A voltage is supplied to the synthesizer 5. The second battery 8 supplies a voltage to the second regulator 7.

Next, the operation of the radio device according to the second embodiment of the present invention will be described. When the usage method corresponding to the time division multiplex communication system is used, the transmission unit 3 is turned on in the transmission slot and turned off in the other slots. The present embodiment is capable of stably supplying a power supply voltage to the synthesizer 5 by dividing the regulator as shown in the first embodiment.
It is characterized in that it is divided into a first battery 1 for supplying power to the second regulator 8 and a second battery 8 for supplying power to the second regulator 7.

As a result, it becomes possible to prevent the transmission wave from flowing from the transmission unit 3 to the synthesizer 5 via the battery, and the oscillation output of the synthesizer 5 can always be of high purity. Particularly, in the direct modulation method in which the oscillation frequency of the synthesizer 5 and the transmission output frequency are the same, the output of the transmitter 3 leaks into the power supply line and the purity of the synthesizer output deteriorates. It is possible to significantly reduce it.

The third embodiment of the present invention will be described below. FIG. 3 is a diagram showing the configuration of the third exemplary embodiment of the present invention. In the figure, the battery 1 supplies a voltage to the first regulator 2. The first regulator 2 converts the voltage of the battery 1 into a desired voltage. The synthesizer 5 supplies a high frequency signal to the transmitter 3 and the receiver 4. The baseband signal processing unit 6 supplies the modulated signal to the transmitting unit 3 and demodulates the signal from the receiving unit 4. The second regulator 7 converts the voltage of the battery 1 into a desired voltage,
The voltage is supplied to the power amplifier (PA) 9. P
A9 amplifies the output of the transmitter 3. The regulator 2 also supplies a voltage to the synthesizer 5.

Next, the operation of the radio device according to the third embodiment of the present invention will be described. This embodiment is similar to the first embodiment of the present invention. In the first embodiment, the power supply voltage is supplied from the second regulator 7 to the synthesizer 3, whereas the present embodiment is different from the first embodiment. In the embodiment, the power supply voltage is supplied from the second regulator 7 to the power amplification unit (PA) 9.

As described in the first embodiment, in the time division multiplex communication system, the transmission unit is turned on / off, but the block requiring the most current capacity at that time is the power amplification unit (PA) 9. . In the first embodiment, the voltage is supplied from the second regulator 7 to the synthesizer 5 that is affected by the power supply voltage fluctuation, whereas in the present embodiment, the power amplification unit that is the largest cause of the power supply voltage fluctuation. By supplying a voltage to the (PA) 9 from the second regulator 7, the same effect as in the first embodiment is obtained.

That is, since the power supply voltage is supplied from the independent second regulator 7 to the power amplifying unit (PA) 9 having the largest current consumption, the output of the second regulator 7 is turned on / off by transmission. Although the voltage fluctuates, the output voltage of the first regulator 2 does not fluctuate as in the first embodiment due to the ripple rejection property of the regulator, so that the frequency of the synthesizer 5 is always stable.

The fourth embodiment of the present invention will be described below. FIG. 4 is a diagram showing the configuration of the fourth exemplary embodiment of the present invention. In the figure, the battery 1 supplies a voltage to the first regulator. The first regulator 2 converts the voltage of the battery 1 into a desired voltage. The synthesizer 5 includes a transmitter 3
And a high frequency signal is supplied to the receiver 4. The baseband signal processing unit 6 supplies the modulated signal to the transmitting unit 3 and demodulates the signal from the receiving unit 4. The second regulator 7 converts the voltage of the battery into a desired voltage and supplies the voltage to the synthesizer 5. Further, 10 is the- (minus) side of the battery 1. Further, 11 is a ground of the synthesizer 5 and the second regulator 7,
Reference numeral 12 is a ground of another block.

Next, the operation of the radio device according to the fourth embodiment of the present invention will be described. The operation of this embodiment is omitted because it is similar to that of the first embodiment of the present invention, but the characteristic is the ground wiring method. In this embodiment, the ground 11 of the synthesizer 5 and the second regulator 7 and the ground 12 of the other block are separated, and these grounds 11 and 12 are connected in the vicinity of the negative terminal 10 of the battery 1. As a result, the effect of reducing the influence of the sneak of the transmitted wave by separating the synthesizer regulator in the first embodiment is further increased.

That is, as shown in the first embodiment, by separating the regulator, it is possible to prevent the influence of the high frequency current leaking into the synthesizer through the regulator output terminal, but it is possible to prevent the leaking through the ground. The deterioration factor remains. Even when the high frequency current of the output of the transmitter leaks to the power supply line as in the first embodiment, the regulator is supplied by the first regulator 2 and the second regulator.
Since the regulator 7 is separated from the regulator 7, the sneak into the synthesizer can be reduced by the isolation of the power supply lines of these two regulators. However, since the ground is common, when the output of the transmitter leaks to the ground, it may sneak into a synthesizer connected to the same ground.

The present embodiment is intended to reduce the influence of such leakage through the ground, and the ground 11 of the synthesizer 5 and the second regulator 7 and the ground 12 of the other parts are the negative side of the battery. Since the connection is made at only one point of the end 10, even if the high frequency current of the transmitter 3 leaks into the ground 12, the current is not transmitted.
The synthesizer 5 is isolated from the influence thereof, and the second regulator 7 always supplies a high-purity signal.

Hereinafter, a fifth embodiment of the present invention will be described. FIG. 5 is a diagram showing the configuration of the fifth embodiment of the present invention. In the figure, the first battery 1 supplies a voltage to the first regulator 2. The first regulator 2 converts the voltage of the first battery 1 into a desired voltage. The synthesizer 5 supplies a high frequency signal to the transmitter 3 and the receiver 4. The baseband signal processing unit 6 supplies the modulated signal to the transmitting unit 3 and demodulates the signal from the receiving unit 4. The second battery 8 supplies voltage to the second regulator 7. The second regulator 7 converts the voltage of the second battery 8 into a desired voltage and supplies the voltage to the synthesizer 5. Further, 11 is a ground of the synthesizer 5 and the second regulator 7, and 12
Is the ground of another block.

Next, the operation of the radio equipment according to the fifth embodiment of the present invention will be described. The operation of this embodiment is omitted because it is the same as that of the second embodiment of the present invention, but the feature is the ground wiring method as in the fourth embodiment. In this embodiment, the synthesizer 5, the second regulator 7, and the ground 11 of the second battery 8 are separated from the ground 12 of the other blocks and the first battery 1. This further increases the effect of reducing the influence of the sneak of the transmitted wave by separating the synthesizer regulator and the battery in the first embodiment.

That is, since the synthesizer 5, the second regulator 7, and the ground 11 of the second battery 8 are completely separated from the ground 12 of the other blocks and the first battery 1, the transmitter 12 is connected to the ground 12. Even if the high frequency current leaks into the synthesizer 5, the synthesizer 5 can be supplied with a high-purity signal without being affected by the influence.

The eighth embodiment of the present invention will be described below. FIG. 6 is a diagram showing the configuration of the sixth exemplary embodiment of the present invention. In the figure, the first battery 1 supplies a voltage to the first regulator 2. The first regulator 2 converts the voltage of the first battery 1 into a desired voltage. The synthesizer 5 supplies a high frequency signal to the transmitter 3 and the receiver 4. The baseband signal processing unit 6 supplies the modulated signal to the transmitting unit 3 and demodulates the signal from the receiving unit 4. The second battery 8 supplies voltage to the second regulator 7. The second regulator 7 converts the voltage of the second battery 8 into a desired voltage and supplies the voltage to the synthesizer 5. Further, 11 is a ground of the synthesizer 5 and the second regulator 7, and 12
Is the ground of another block. 13 is a shield.

Next, the operation of the radio device according to the sixth embodiment of the present invention will be described. The operation of this embodiment is the same as that of the fifth embodiment of the present invention, and will be omitted. In this embodiment, a shield 13 is added to the above fifth embodiment. According to the above embodiment, by separating the synthesizer 5, the second regulator 7 and the second battery 8 and the power supply relationship thereof from the other parts, the fluctuation of the power supply voltage and the transmission wave at the time of direct modulation to the synthesizer 5 are separated. It is possible to prevent wraparound via the power supply line and the ground, but it is not possible to prevent spatial jumping into the synthesizer 5. The sixth embodiment of the present invention has been made in view of these problems.

The shield 13 in this embodiment is applied to the synthesizer 5, the second regulator 7 for supplying power to the synthesizer 5, and the second battery 8 for supplying voltage to the second regulator 7. As a result, it becomes possible to prevent spatial leakage of the transmitted wave from the transmitter 3, and it is possible to significantly reduce the deterioration of the purity of the synthesizer output.

The seventh embodiment of the present invention will be described below. FIG. 7 is a diagram showing the configuration of the seventh exemplary embodiment of the present invention. In the figure, the first battery 1 supplies a voltage to the first regulator 2. The first regulator 2 converts the voltage of the first battery 1 into a desired voltage. The synthesizer 5 supplies a high frequency signal to the transmitter 3 and the receiver 4. The baseband signal processing unit 6 supplies the modulated signal to the transmitting unit 3 and demodulates the signal from the receiving unit 4. The second battery 8 supplies a voltage to the second regulator 7. The second regulator 7 converts the voltage of the second battery 8 into a desired voltage and supplies the voltage to the synthesizer 5. The LED 14 converts the output voltage of the second regulator 7 into light. The phototransistor 15 receives the output voltage of the second regulator 7 converted into light by the LED 14 and returns it to an electric signal.

Next, the operation of the radio device according to the seventh embodiment of the present invention will be described. The wireless device of this embodiment is similar to that of the second embodiment, but the method of supplying the power supply voltage from the second regulator 7 to the synthesizer 5 is different.
That is, in the present embodiment, the output of the second regulator 7 is once converted into an optical signal by the LED 14. The output voltage of the second regulator 7 converted into an optical signal is converted into an electric signal again by the phototransistor 15 and is connected to the synthesizer 5.

By taking such a connection form,
Even if the output of the second regulator contains an unnecessary signal other than the power supply voltage, the voltage supplied to the synthesizer is always pure because it is separated by light.

In this embodiment, the ground is separated as in the fourth and fifth embodiments of the present invention, or the sixth embodiment.
The patentability of the present invention is not impaired even if it is used for the shielded one as in the embodiment.

The eighth embodiment of the present invention will be described below. FIG. 8 is a diagram showing the configuration of the eighth embodiment of the present invention. In the figure, the first battery 1 supplies a voltage to the first regulator 2. The second regulator 2 converts the voltage of the first battery 1 into a desired voltage. The synthesizer 5 supplies a high frequency signal to the transmitter 3 and the receiver 4. The baseband signal processing unit 6 supplies the modulated signal to the transmitting unit 3 and demodulates the signal from the receiving unit 4. The second battery 8 supplies voltage to the second regulator 7. The second regulator 7 converts the voltage of the second battery 8 into a desired voltage and supplies the voltage to the synthesizer 5. The LED 14 converts the output voltage of the second regulator 7 into light. The phototransistor 15 receives the output voltage of the second regulator 7 converted into light by the LED 14 and returns it to an electric signal.

Furthermore, the LED 16 converts the output of the synthesizer 5 to the receiving section 4 into light. The phototransistor 17 receives the output of the synthesizer 5 converted to light by the LED 16 and returns it to an electric signal. The LED 18 converts the output of the synthesizer 5 to the transmitter 4 into light. The phototransistor 19 is LE
The output to the transmitter 4 of the synthesizer 5 converted into light at D18 is received and returned to an electric signal.

Next, the operation of the radio device according to the eighth embodiment of the present invention will be described. In the wireless device of the present embodiment, the output of the synthesizer 5 is once converted into an optical signal by the LED 16 or 18 and is returned to an electric signal, and then supplied to the receiving unit 4 or the transmitting unit 3. An unnecessary signal does not mix into the synthesizer 5 from the terminal or the input terminal of the receiving unit 4, and the synthesizer 5 can always supply a pure signal without being influenced by the load side. The operation of the other parts is the same as that of the above-mentioned seventh embodiment, and therefore its explanation is omitted.

Further, a control signal from a control unit (not shown) for performing channel setting and the like for the synthesizer 5 is also converted into light by the LED, and then converted to an electric signal by the phototransistor and given to the synthesizer 5. It is possible to prevent the disturbance on the synthesizer 5.

[0048]

As described above, in the present invention,
Since the regulator of the synthesizer is configured separately from the regulator used for other blocks, it is possible to significantly reduce the influence of the fluctuation of the output frequency of the synthesizer caused by the fluctuation of the power supply voltage due to the ON / OFF of the transmitter in time division multiplex communication. You can

Further, when the direct modulation method is used, it is possible to reduce the problem of deterioration of the purity of the output signal of the synthesizer caused by the sneak of the modulated wave through the power supply line to the synthesizer.

Further, since the battery used for the synthesizer and the battery used for the other blocks are separated, when the direct modulation method is used, the output signal of the synthesizer caused by the sneak of the modulated wave through the power supply line to the synthesizer. The problem of deterioration in purity can be further greatly reduced.

Further, not only the power supply line but also the ground is separated between the synthesizer periphery and other blocks, so that the influence of sneak can be further reduced. Furthermore, since the synthesizer, its regulator, and the battery are included in one shield, it is possible to avoid a spatial jump from the transmitter.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a second exemplary embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a third exemplary embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a fourth exemplary embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a fifth exemplary embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of a sixth exemplary embodiment of the present invention.

FIG. 7 is a diagram showing a configuration of a seventh exemplary embodiment of the present invention.

FIG. 8 is a diagram showing a configuration of an eighth exemplary embodiment of the present invention.

FIG. 9 is a diagram showing a configuration of a conventional wireless device.

[Explanation of symbols]

1 ... Battery (first battery), 2 ... First regulator, 3
... Sending unit, 4 ... Receiving unit, 5 ... Synthesizer, 6 ... Baseband signal processing unit, 7 ... Second regulator, 8 ... Second
Battery, 9 ... PA.

Claims (8)

[Claims] 1. A transmitter, a receiver, a synthesizer that supplies a high-frequency signal to the transmitter and the receiver, a modulated signal to the transmitter, and a signal from the receiver. A baseband signal processing unit for demodulation, a first regulator that converts the battery voltage into a desired voltage and supplies the voltage to the transmitting unit, the receiving unit, and the baseband signal processing unit, and the first regulator And a second regulator which is provided in the converter and converts the voltage of the battery into a desired voltage and supplies the voltage to the synthesizer. 2. The battery includes a first battery and a second battery provided separately from the first battery.
2. The wireless device according to claim 1, wherein the battery is connected to the first regulator, and the second battery is connected to the second regulator. 3. A transmitter, a power amplifier for amplifying the output of the transmitter, a receiver, a synthesizer for supplying a high-frequency signal to the transmitter and the receiver, and a modulation signal for the transmitter. And a baseband signal processing unit that demodulates the signal from the receiving unit, and converts the battery voltage into a desired voltage and supplies the voltage to the transmitting unit and the receiving unit, the baseband signal processing unit, and the synthesizer. A first regulator and a second regulator which is provided separately from the first regulator, converts the battery voltage into a desired voltage, and supplies the desired voltage to the power amplifier. transceiver. 4. The grounds of the synthesizer and the second regulator and the grounds of other blocks are separated, and these two grounds are connected to one end of the battery. The listed radio. 5. The radio according to claim 2, wherein the grounds of the synthesizer, the second regulator and the second battery are provided separately from the grounds of the first battery and the other block. Machine. 6. The radio device according to claim 5, wherein the synthesizer, the second regulator, and the second battery are shielded. 7. A first conversion element for converting the output of the second regulator into an optical signal, and a second conversion element for converting the optical signal into an electric signal and supplying the electric signal to the synthesizer. The wireless device according to claim 2, wherein: 8. A third conversion element for converting the output of the synthesizer into an optical signal, a fourth conversion element for converting the optical signal into an electric signal and supplying the electric signal to the transmitting section, and an output of the synthesizer as an optical signal. A fifth conversion element for converting into a signal, and a sixth conversion element for converting the optical signal into an electric signal and supplying the electric signal to the receiving section.
8. The wireless device according to claim 7, further comprising: