JP2001332986A - Transmission output control method, base station appapatus, method and apparatus for controlling transmission output - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmission output control method, capable of respectively keeping constant the respective output values of plural antenna output terminals. SOLUTION: This method is compris the steps of detecting processing for detecting a transmitting signal amplified by a power amplifying part, comparison processing for comparing the detected output value provided by detecting processing with a preset detection output target value and a control processing for determining the amplification factor of a variable gain amplifier for amplifying the transmitting signal, so that the detected output value can match with the detection output target value, and the detection output target value and a variable gain amplifier control value are values with added respective correction values set by respective antennas to respective initial values, for correcting an output deviation among plural antennas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission output control method, a base station apparatus, and a transmission apparatus capable of maintaining a constant transmission output regardless of which antenna is used for transmission in a radio transmission apparatus having a plurality of antennas. The present invention relates to an output adjustment method and apparatus.

[0002]

2. Description of the Related Art Conventionally, mobile phones and PHS (Personal Han
dyphone System) and other mobile communication systems
An ALC (Automatic Control Unit) that automatically controls the amplification of a power amplification unit provided at the last stage so that the transmission output value output from the transmission output unit of the base station device or the mobile communication device is always constant.
matic Level Control) circuit was provided.

[0003] This circuit detects a part of the output of a power amplifier, compares the detected output value with a predetermined detected output target value, and adjusts the power so that the detected output value matches the detected output target value. The transmission output was kept stable by controlling the amplification degree of the amplifier.

FIG. 5 shows a P having such an ALC circuit.
FIG. 3 is a block diagram illustrating a configuration of an HS base station device. The base station apparatus includes a baseband signal processing circuit 1 for outputting a voice signal, a modulator 2 for modulating a voice signal output from the baseband signal processing circuit 1, and an amplifying high frequency signal output from the modulator 2. Variable gain amplifier 3 and power amplifier (power amplifying unit) 4, isolator 5, which is a one-way element, and four antennas AT1, AT2, AT constituting a multi-branch antenna by diversity control
3 and an antenna switching circuit 6 for selecting any one of AT4.

Further, the base station apparatus has a detector 7 for measuring the power value of the high-frequency signal output from the power amplifier 4,
The output of this detector 7 is A / D (analog / digital)
A / D converter 8 for conversion, control unit 9 for obtaining a detection output value output from A / D converter 8, latch circuit 1 for latching a variable gain amplifier control value from control unit 9
0, a D / A converter 11 for D / A (digital / analog) converting a variable gain amplifier control value latched by the latch circuit 10 and outputting the converted value as a variable gain control signal; The amplification of the gain amplifier 3 is controlled so that the power value of the high-frequency signal output from the power amplifier 4 is kept constant.

In addition, the base station apparatus switches the antenna switching circuit 6 under the control of the control unit 9 to select one of the antennas AT1 to AT4 constituting the multi-branch antenna, and the control unit 9 9, an adjustment data storage unit 13 for storing an initial adjustment value of a variable gain amplifier control value, a detection output target value, and the like as digital data.

The antenna switching circuit 6 includes a transmission antenna switching switch 61 for determining which of the four antennas AT1 to AT4 is to be selected as a transmission antenna, and transmission / reception switching switches SW1 to SW4 provided for the antennas AT1 to AT4, respectively. SW4 is provided. This switch SW
When the antennas AT1 to AT4 are switched as receiving antennas at 1 to SW4, the received signal is sent to the receiving unit via a receiving antenna switch (not shown).

Next, a conventional transmission output control method in the transmission output section of the base station apparatus will be described with reference to a processing flow chart shown in FIG.

[0009] This process is started by the start of transmission. First, a variable gain amplifier control initial value and a detection output target value for controlling the amplification degree of the variable gain amplifier 3 are read from the adjustment data storage unit 13 (step S51).

Next, the read initial value of the variable gain amplifier control is latched in the latch circuit 10, and the D / A converter 1
After conversion into an analog signal in step 1, the signal is output as a variable gain amplifier control signal for controlling the amplification of the variable gain amplifier 3 (step S52).

On the other hand, the high-frequency signal output from the modulator 2 is amplified by a variable gain amplifier 3 and a power amplifier 4 whose amplification is controlled by a variable gain amplifier control signal, and is output to an antenna switching circuit 6 via an isolator 5. Are transmitted as radio waves from the selected antenna.

A part of the output of the power amplifier 4 is detected by the detector 7 and converted into a digital signal by the A / D converter 8, and then obtained as a detection output value by the control unit 9 (step S53). .

The control section 9 compares the obtained detection output value with the detection output target value (step S54), and if the detection output value is larger than the detection output target value, reduces the variable gain amplifier control value by the adjustment value α. If the detection output value is equal to the detection output target value, the variable gain amplifier control value is left unchanged (step S56), and if the detection output value is smaller than the detection output target value, the variable gain amplifier control value is adjusted. It increases by the value α (step S57).

The variable gain amplifier control value thus obtained is again latched in the latch circuit 10 and converted into an analog signal by the D / A converter 11, and then the variable gain amplifier 3 again outputs the variable gain amplifier control signal for controlling the amplification degree. Supply (Step S52). This series of processing (step S52)
To S57) are repeated until the call ends (step S5).
8) Control so that the transmission output is always kept stable.

Next, a block diagram shown in FIG. 7 shows a transmission output adjustment performed when a detection output target value and a variable gain amplifier control initial value are stored in advance in the adjustment data storage unit 13 of the base station apparatus. 1 shows an apparatus.

The transmission output adjusting device is provided with the antenna terminals TM1 to TM4 of the antennas AT1 to AT4 of the base station device described above.
A power meter 14 is connected to one of the
The control unit 9 and the adjusting device 15 adjust the variable gain amplifier control value and the detection output target value so that the antenna end output measured value measured in Step 4 becomes a predetermined specified output value. The value and the detection output target value are stored in the adjustment data storage unit 13 as the variable gain amplifier control initial value and the detection output target value.

The adjusting device 15 is a transmission output data input unit 15 for inputting an antenna end output measurement value measured by the power meter 14.
a, a prescribed output data storage 15b for storing a prescribed prescribed output value, and a comparator 15c for comparing each output of the transmission output data input 15a and the prescribed output data storage 15b.
And an adjustment information output unit 15 d that adjusts the detection output target value based on the comparison result of the comparison unit 15 c and outputs the adjustment value to the control unit 9.

Next, a conventional transmission output adjusting method in the transmission output adjusting apparatus will be described with reference to a processing flowchart shown in FIG.

First, the variable gain amplifier control value and the detection output target value are set to predetermined fixed values (step S6).
1). Next, using the variable gain amplifier control value and the detection output target value as initial values, a transmission output control process is performed to adjust the variable gain amplifier control value so that the detection output value matches the detection output target value (step S62). . This transmission output control processing is the same as the processing in steps S52 to S57 described above. When a variable gain amplifier control value whose detection output value matches the detection output target value is obtained by this process (step S56), the process proceeds to the next process (step S63).

Next, the measured value of the antenna end output measured by the wattmeter 14 and the specified output value are compared with each other by the comparing unit 15 of the adjusting device 15.
The comparison is made with c (step S63). As a result, when the measured value is larger than the specified output value, the detection output target value is adjusted to the adjustment value β.
(Step S64), and when the measured value is smaller than the specified output value, the detection output target value is increased by the adjustment value β (Step S65).

The transmission output control process is performed again using the detection output target value thus obtained (step S62), and a new variable gain amplifier control value is obtained. This series of processing (steps S62 to S65) is repeated until the measured value matches the specified output value, and when both values match (step S63), the variable gain amplifier control value and the detection output target value at that time are set to the variable gain amplifier. It is stored in the adjustment data storage unit 13 as the control initial value and the detection output target value (Step S66). Thus, the transmission output adjustment is completed.

[0022]

In the conventional transmission output control method and transmission output adjustment method described above, a part of the output of the power amplifier 4 is detected by an ALC loop, and the output is varied based on the detected output value. Gain amplifier 3
Of the antennas AT1 to A4 due to the loss from the power amplifier 4 to each of the antennas AT1 to AT4, for example, the variation of the diode switches constituting the changeover switch, the influence of the board pattern, the influence of the cable, etc.
The output deviation occurring between T4 was not considered.

For this reason, as shown in FIG. 9, the level from the power amplifier 4 to the transmission antenna changeover switch 61 is the same, but the level from there to the antennas AT1 to AT4 has a deviation for each antenna in the transmission antenna changeover switch 61. Further, a deviation has occurred in the transmission / reception changeover switches SW1 to SW4. For this reason, there is a problem that the power value of the radio wave to be transmitted cannot be kept at the optimum value depending on the antenna selected by the diversity control.

The present invention has been made to solve such a conventional problem, and a transmission output control method and a base station apparatus capable of keeping output values of respective output terminals of a plurality of antennas constant. And a transmission output adjustment method and apparatus.

[0025]

A transmission output control method according to the present invention comprises a detection process for detecting a transmission signal amplified by a power amplifier, a detection output value obtained by the detection process, and a preset detection output target value. And an adjustment process for adjusting a variable gain amplifier control value that determines an amplification degree of a variable gain amplifier that amplifies a transmission signal so that a detection output value matches a detection output target value based on the comparison result. In other words, the detection output target value and the variable gain amplifier control value are values obtained by adding respective correction values set for each antenna to each initial value in order to correct the output deviation between the plurality of antennas.

According to this method, by adding each correction value set for each antenna to each initial value of the detection output target value and the variable gain amplifier control value, an output deviation occurring between antennas is corrected, and a plurality of antennas are corrected. Whichever is selected as the transmission antenna, the transmission output can be kept constant.

[0027] The base station apparatus of the present invention comprises: a detecting means for detecting the transmission signal amplified by the power amplifying unit; a comparing means for comparing a detected output value obtained by the detecting means with a preset detected output target value; Adjusting means for adjusting a variable gain amplifier control value that determines the amplification degree of the variable gain amplifier that amplifies the transmission signal so that the detection output value matches the detection output target value based on the comparison result. The variable gain amplifier control value is a value obtained by adding each correction value set for each antenna to each initial value in order to correct the output deviation between a plurality of antennas.

According to this configuration, by adding each correction value set for each antenna to each initial value of the detection output target value and the variable gain amplifier control value, the output deviation generated between the antennas is corrected, and Whichever is selected as the transmission antenna, the transmission output can be kept constant.

According to the transmission output adjusting method of the present invention, the degree of amplification of the variable gain amplifier for amplifying the transmission signal is determined so that the detection output value of the transmission signal amplified by the power amplification unit matches a predetermined detection output target value. A transmission output control process for adjusting a variable gain amplifier control value, an adjustment process for adjusting a detection output target value such that an antenna end output measurement value for transmitting a transmission signal matches a predetermined output value, and a plurality of antennas. Initial value setting processing with the variable gain amplifier control value and the detection output target value of the reference antenna system in the initial value as the initial value, and the variable gain amplifier control value and the detection output target value of the antenna system other than the reference antenna system and each initial value And a correction value setting process for setting the difference between the correction values for the antenna systems other than the reference antenna system.

According to this method, the variable gain amplifier control value and the detection output target value of the reference antenna system are stored in the memory as initial values, and the variable gain amplifier control value and the detection output target value of the antenna systems other than the reference antenna system are initialized. By storing the difference in the memory as a correction value for the value,
This is to reduce the memory usage.

In the transmission output adjusting apparatus according to the present invention, the amplification degree of the variable gain amplifier for amplifying the transmission signal is determined so that the detection output value of the transmission signal amplified by the power amplifying unit matches the predetermined detection output target value. Transmission output control means for adjusting a variable gain amplifier control value; adjusting means for adjusting a detection output target value such that an antenna end output measurement value for transmitting a transmission signal matches a predetermined output value; and a plurality of antennas. Initial value setting means for initializing the variable gain amplifier control value and the detection output target value of the reference antenna system, and the variable gain amplifier control value and the detection output target value of the antenna system other than the reference antenna system and each initial value. And correction value setting means for setting the difference between the correction values for the antenna systems other than the reference antenna system.

With this configuration, the variable gain amplifier control value and the detection output target value of the reference antenna system are stored in the memory as initial values, and the variable gain amplifier control value and the detection output target value of the antenna system other than the reference antenna system are initialized. By storing the difference in the memory as a correction value for the value,
This is to reduce the memory usage.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

First, an embodiment of the transmission output adjusting method according to the present invention will be described with reference to the processing flowcharts shown in FIGS. The configuration of the transmission output adjustment device to which the present embodiment is applied is the same as the configuration shown in FIG.

First, the variable gain amplifier control value, the detection output target value stored in the adjustment data storage unit 13, and the variable gain amplifier control correction respectively corresponding to the plurality of antennas ATn (n = 1, 2, 3, 4). The value and the detection output correction value are cleared (step S11).

Next, the variable gain amplifier control value and the detection output target value are set to predetermined fixed values, respectively, and the variable n is set to 1 to select a reference antenna AT1 system (step S12). Then, the power meter 14 is connected to the antenna terminal TM.
Connect to 1.

Next, using the variable gain amplifier control value set to a fixed value and the detection output target value as initial values, transmission output control for adjusting the variable gain amplifier control value so that the detection output value matches the detection output target value. Perform processing (step S
13).

This transmission output control processing is the same as the processing in steps S52 to S57 described above. If the detected output value matches the detected output target value (step S54), the variable gain amplifier control value at that time is selected (step S5).
6), and proceed to the next process (step S14).

Next, the measured value of the antenna end output measured by the power meter 14 and the specified output value are compared with the comparing unit 15 of the adjusting device 15.
The comparison is made with c (step S14). As a result, if the measured value is larger than the specified output value, the detection output target value is reduced by the adjustment value β (Step S15), and if the measured value is smaller than the specified output value, the detection output target value is increased by the adjustment value β ( Step S16) is performed respectively.

The transmission output control process is performed again using the new detection output target value thus obtained (step S13), and a new variable gain amplifier control value is obtained. This series of processing (steps S13 to S16) is repeated until the measured value matches the specified output value, and when both values match (step S1).
4) The adjustment data storage unit 13 uses the variable gain amplifier control value and the detection output target value of the antenna AT1 at that time as the variable gain amplifier control initial value and the detection output target value.
(Step S17).

Then, the variable gain correction value and the detection output correction value of the antenna AT1 in the adjustment data storage unit 13 are set to zero (step S18). This is because the variable gain amplifier control value of the antenna AT1 and the detection output target value are used as references, and correction values for other antenna systems are determined with respect to these.

Next, the variable n is incremented to 2 (step S19), and the power meter 14 is set to the antenna terminal TM2.
To adjust the antenna AT2 system. First, similarly to the adjustment of the antenna AT1 system, a transmission output control process for adjusting the variable gain amplifier control value so that the detection output value matches the detection output target value is performed (step S20). This transmission output control processing is the same as the processing of steps S52 to S57 described above. When a variable gain amplifier control value whose detection output value matches the detection output target value is obtained (step S54), the next processing (step S21). Move to

Next, the measured value at the antenna end output measured by the wattmeter 14 and the specified output value are compared with the comparing unit 15 of the adjusting device 15.
The comparison is made with c (step S21). As a result, if the measured value is larger than the specified output value, the detection output target value is reduced by the adjustment value β (step S22), and if the measured value is smaller than the specified output value, the detection output target value is increased by the adjustment value β (step S22). S23).

The transmission output control process is performed again using the new detection output target value thus obtained (step S20), and a new variable gain amplifier control value is obtained. This series of processing (steps S20 to S23) is repeated until the measured value matches the specified output value, and when both values match (step S2).
1) The difference between the variable gain amplifier control value at that time and the previously obtained variable gain amplifier control initial value of the antenna AT1 is used as the variable gain amplifier control correction value of the antenna AT2 system. The difference between the obtained detection output target value of the antenna AT1 and the detection output correction value of the antenna AT2 is stored in the adjustment data storage unit 13 (step S24).

This series of processing (steps S19 to S2)
4) is repeated until the variable n becomes 4 (step S2)
5). As a result, the adjustment data storage unit 13 stores the variable gain amplifier control correction values and the detection output correction values of the antennas AT2, AT3, and AT4, respectively.

As a result, the adjustment data storage unit 13 stores the variable gain amplifier control value and the detection output target value of the antenna AT1 in the initial value Ac, as shown in FIG.
As Fc, the variable gain correction value A1 (correction amount 0) of the antenna AT1, the detection output correction value F1 (correction amount 0), the variable gain correction value A2 of the antenna AT2, the detection output correction value F2, and the variable gain correction value of the antenna AT3. A3, detection output correction value F
3. The variable gain correction value A4 and the detection output correction value F4 of the antenna AT4 are stored.

As shown in FIG. 3B, for example, the correction amount of the variable gain amplifier control correction value A1 of the antenna AT1 is “0”, and the correction amount of the variable gain amplifier control correction value A2 of the antenna AT2 is "-3" and the antenna AT3
The correction amount of the variable gain amplifier control correction value A3 is “+1”, and the variable gain amplifier control correction value A4 of the antenna AT4 is “+1”.
Is "+2".

As described above, the transmission output adjusting method according to the embodiment of the present invention stores the variable gain amplifier control value of the reference antenna AT1 system and the detection output target value in the adjustment data storage unit 13 as initial values. Antennas AT2 to AT
The variable gain amplifier control values and the detection output target values of the four systems are stored in the adjustment data storage unit 13 as correction values for the initial values.

Next, an embodiment of the transmission output control method according to the present invention will be described with reference to the processing flow chart shown in FIG. The configuration of the transmission output unit of the base station apparatus to which the present embodiment is applied is the same as the configuration shown in FIG.

This process is started by starting transmission. First, the variable gain amplifier control initial value and the detection output target value stored in the adjustment data storage unit 13 are read as the variable gain amplifier control value and the detection output target value by the above-described transmission output adjustment method (FIG. 1) (step S31).

Next, the variable gain amplifier control correction value of the antenna ATn selected as the transmission output antenna is read from the adjustment data storage unit 13 and added to the variable gain amplifier control value, and latched by the latch circuit 10. And D / A
The signal is converted into an analog signal by the converter 11 and output to the variable gain amplifier 3 as a variable gain amplifier control signal for controlling the degree of amplification (step S32). Here, as described above, the variable gain amplifier control correction values are “0” for the antenna AT1, “−3” for the antenna AT2, “+1” for the antenna AT3, and “+2” for the antenna AT4.

On the other hand, the high frequency signal output from the modulator 2 is amplified by the variable gain amplifier 3 and the power amplifier 4 whose amplification is controlled by the variable gain amplifier control signal, and is output to the antenna switching circuit 6 via the isolator 5. Then, it is transmitted as radio waves from the selected antenna ATn.

A part of the output of the power amplifier 4 is detected by the detector 7 and converted into a digital signal by the A / D converter 8, and then obtained as a detection output value by the controller 9 (step S33). .

Next, the control section 9 reads out the detection output correction value of the selected antenna ATn from the adjustment data storage section 13, adds it to the detection output target value, and compares it with the obtained detection output value (step S34). .

As a result, when the detection output value is larger than the corrected detection output target value, the variable gain amplifier control value is reduced by the adjustment value α (step S35), and the detection output value is compared with the corrected detection output target value. If they are equal, the variable gain amplifier control value remains unchanged (step S36), and if the detected output value is smaller than the corrected detected output target value, the variable gain amplifier control value is increased by the adjustment value α (step S37).

The variable gain amplifier control value thus obtained is again latched in the latch circuit 10 and converted into an analog signal by the D / A converter 11, and then the variable gain amplifier 3 again outputs a variable gain amplifier control signal for controlling the degree of amplification. Supply (Step S32). This series of processing (step S32)
To S37) until the end of the call (step S3).
8) Control is performed so that the transmission output is always kept stable regardless of which antenna is selected.

As described above, the transmission output control method according to the embodiment of the present invention adds each correction value set for each antenna to each initial value of the detection output target value and the variable gain amplifier control value. Regardless of which of the plurality of antennas is selected as the transmission antenna, the transmission output is kept constant.

In the above embodiment, the PHS base station apparatus has been described. However, the present invention is not limited to this, and any wireless apparatus having a plurality of transmitting antennas, such as a mobile phone base station apparatus and a mobile communication apparatus, may be used. The same effect can be obtained by applying the method described above.

[0059]

As described above, according to the present invention, the variable gain amplifier control value and the detection output target value obtained by adjustment in the reference antenna system are stored as initial values (reference values) and adjusted in other antenna systems. The variable gain amplifier control value and the detection output target value obtained as described above are stored as correction values, and the output deviation occurring between the antennas is corrected with this correction value, so that any of the plurality of antennas is selected as the transmission antenna. However, it is possible to provide a transmission output control method capable of keeping transmission output constant.

[Brief description of the drawings]

FIG. 1 is a processing flowchart (1) showing an embodiment of a transmission output adjusting method according to the present invention;

FIG. 2 is a processing flowchart (2) showing an embodiment of a transmission output adjusting method according to the present invention;

3A is a table showing a variable gain amplifier control value of each antenna system and an initial value and a correction value of a detection output target value as a table; FIG. 3B is an example of a variable gain amplifier control correction value of each antenna system; Diagram shown

FIG. 4 is a processing flowchart showing an embodiment of a transmission output control method according to the present invention.

FIG. 5 is a block diagram showing a transmission output unit of the base station device.

FIG. 6 is a processing flowchart showing a conventional transmission output control method.

FIG. 7 is a block diagram showing a transmission output adjusting device.

FIG. 8 is a processing flowchart showing a conventional transmission output adjustment method.

FIG. 9 is a diagram illustrating levels from a power amplifier to an antenna.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Baseband signal processing circuit 2 Modulator 3 Variable gain amplifier 4 Power amplifier 5 Isolator 6 Antenna switching circuit 7 Detector 8 A / D converter 9 Control unit 10 Latch circuit 11 D / A converter 12 Transmission antenna selection circuit 13 Adjustment data storage Unit 61 Transmission antenna changeover switch AT1 to AT4 Antenna SW1 to SW4 Transmission and reception changeover switch TM1 to TM4 Antenna terminal

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Saori Koshida, Inventor 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa F-term (reference) in Matsushita Communication Industrial Co., Ltd. 5K011 DA02 DA12 DA26 EA03 JA01 KA13 5K060 BB07 DD04 HH06 HH31 HH32 HH39 JJ21 KK01 LL01 LL24

Claims (4)

[Claims] 1. A detection process for detecting a transmission signal amplified by a power amplification unit; a comparison process for comparing a detection output value obtained by the detection process with a preset detection output target value; An adjustment process of adjusting a variable gain amplifier control value that determines an amplification degree of a variable gain amplifier that amplifies the transmission signal so as to match the detection output target value based on the comparison result. The transmission output control method according to claim 1, wherein the variable gain amplifier control value is a value obtained by adding respective correction values set for the respective antennas to respective initial values in order to correct an output deviation between a plurality of antennas. 2. A detecting means for detecting a transmission signal amplified by a power amplifier, a comparing means for comparing a detection output value obtained by the detecting means with a preset detection output target value, and wherein the detection output value is Adjusting means for adjusting a variable gain amplifier control value that determines the degree of amplification of a variable gain amplifier that amplifies the transmission signal so as to match the detection output target value based on the comparison result, wherein the detection output target value and The base station apparatus, wherein the variable gain amplifier control value is a value obtained by adding respective correction values set for the respective antennas to respective initial values in order to correct output deviations between a plurality of antennas. 3. A variable gain amplifier control value for determining an amplification degree of a variable gain amplifier for amplifying the transmission signal so that a detection output value of the transmission signal amplified by the power amplification unit matches a predetermined detection output target value. A transmission output control process for adjusting, an adjustment process for adjusting the detection output target value such that an antenna end output measurement value for transmitting the transmission signal matches a predetermined output value, and a reference among a plurality of antennas. Initial value setting processing for setting the variable gain amplifier control value and the detection output target value of the antenna system as initial values, and the variable gain amplifier control value and the detection output target value of the antenna system other than the reference antenna system and the respective values. A correction value setting process of setting a difference from an initial value to a correction value of an antenna system other than the reference antenna system. 4. A variable gain amplifier control value for determining an amplification degree of a variable gain amplifier for amplifying the transmission signal so that a detection output value of the transmission signal amplified by the power amplification unit matches a predetermined detection output target value. Transmission output control means for adjusting, an adjustment means for adjusting the detection output target value such that an antenna end output measurement value for transmitting the transmission signal matches a preset specified output value, and a reference among a plurality of antennas. Initial value setting means for setting the variable gain amplifier control value and the detection output target value of the antenna system as initial values; and the variable gain amplifier control value and the detection output target value of the antenna system other than the reference antenna system, and And a correction value setting means for setting a difference from an initial value to a correction value of an antenna system other than the reference antenna system.