JP4654648B2 - Apparatus and method for adjusting transmission output of wireless communication device - Google Patents

Description

  The present invention relates to an initial setting of transmission power in a radio communication device, and more specifically, a transmission output level that varies depending on a transmission frequency is automatically transmitted at an arbitrary frequency by an initial setting at any one point of the frequency. The present invention relates to a transmission output adjusting apparatus and method for a wireless communication apparatus for adjusting an output level.

  The transmission output level of the wireless communication device generally varies depending on the transmission frequency due to the characteristics of the parts constituting the transmitter. For this reason, the transmission output level adjusted in a channel having a frequency is not necessarily the same in other channels. In order to suppress the fluctuation of the transmission output due to this frequency, 3 points or 5 points in the frequency range are adjusted using a power meter, the adjustment value is stored as data, and the characteristic curve is calculated from the adjustment value for frequencies other than that point. Then, the transmission output is corrected.

  FIG. 4 is a circuit block diagram showing transmission output level adjustment of a conventional wireless communication device. The transmission level is adjusted by the transmission unit 10 and the transmission output level adjustment unit 40. In the transmission unit 10, the modulated wave of the modulated transmission signal unit 11 and the first transmission frequency of the first transmission frequency unit 13 are mixed in the first mixer circuit 12 and pass through the first bandpass filter 14. The passed signal is mixed in the second mixer circuit with the second transmission frequency of the second transmission frequency unit 16, passes through the second band pass filter 17, is further amplified by the high frequency power amplifier 18, and is transmitted from the transmission output terminal 19. Sent.

  In the transmission output level adjustment unit 40, the CPU 21 reads a frequency set in advance in the storage unit 22 and sends frequency data to the first transmission frequency unit 13 and the second transmission frequency unit 16 of the transmission unit 10. The transmission unit 10 mixes and transmits the transmission signal of the transmission signal unit 11 at the received frequency. The digital / analog converter 23 is operated from the key input unit 24, and the reference voltage of the differential amplifier 25 is set so that the power meter 52 has a predetermined value. The differential amplifier 25 controls the transmission output level of the high frequency amplifier 18 according to the reference voltage. When a predetermined transmission output level is obtained, adjustment value data of the differential amplifier 23 is stored in the storage unit 22 via the CPU 23. This operation is repeated for the frequency of 3 points or 5 points stored in the storage unit 22 to store adjustment value data. In operation, the CPU 21 reads the adjustment value data for the frequency designated by the operator from the memory unit 22 and sends it to the digital / analog converter 23 to set the transmission output level.

According to this method, when adjusting the transmission output, it takes time to adjust the set value by inputting the key from the outside for each point while looking at the measuring instrument. Further, since approximate values other than the adjustment points are calculated, when there are few adjustment points, the error of the transmission output level tends to increase. Further, Patent Document 1 describes a method for initially setting the transmission output level to six levels.
Japanese Utility Model Publication No. 5-9019

  The present invention has been made to solve such a problem. After the initial setting of one point, the transmission output level is automatically adjusted for an arbitrary frequency so that the adjustment time and the transmission output level are adjusted. It is an object of the present invention to provide a transmission output adjusting apparatus and method for a wireless communication apparatus that can reduce the setting error of the wireless communication apparatus.

A transmission output adjustment device for a wireless communication device of the present invention is a transmission output adjustment device for a wireless communication device that automatically adjusts a predetermined transmission output level for an arbitrary frequency,
A transmission output level control unit for controlling the transmission output level of the arbitrary frequency based on transmission output level control data;
A received signal strength Doken out section which detect the intensity of the received signal which has received the transmission signal in the desired frequency,
An analog-digital converter to produce a digital data the received signal strength No. Doshin by analog-to-digital conversion,
In order to set to the predetermined transmission output level, the transmission output level control unit so that the transmission output level becomes a predetermined output level with respect to a transmission signal of an initial setting frequency read out from the arbitrary frequency A key input unit that controls the initial control data,
After setting the initial control data for the initial set frequency, of the initial set frequency the arbitrary of the received signal strength signal received transmission signals at frequencies that are sequentially set as a reference digital data of the received signal strength signal to the transmission signal Comparison / coincidence control with digital data is performed by controlling the transmission output level control unit for each frequency set in sequence , and transmission output level control data to the transmission output level control unit corresponding to the arbitrary frequency is generated A processor to
Wherein said arbitrary frequency, including the frequency of the initial setting, and the reference digital data of the received signal strength No. Doshin for said predetermined transmission output level set in the initial control data corresponding to the frequency of the initial setting, the wherein a storage unit for storing said transmission output level control data at any frequency to be sequentially set, that made pressure al.

Wherein the transmission output adjusting device of a wireless communication device, characterized by further having a field strength display section for displaying the digital data of the received signal strength No. Doshin.

The transmission output adjustment method for a wireless communication device of the present invention is a transmission output adjustment method for a wireless communication device that automatically adjusts a predetermined transmission output level for an arbitrary frequency,
Storing an arbitrary frequency for setting to a predetermined transmission output level in a storage unit;
Reading an initial setting frequency for setting the predetermined transmission output level from the arbitrary frequency;
Wherein the transmission power level adjusted based on the initial set frequency transmission signal of the transmission output level control data, and answering step to set the initial control data,
Generating a reference digital data to said initial control received signal strength No. Doshin which receives the transmission signal data to definitive and analog-to-digital conversion,
Storing the reference digital data ;
And sequentially reading step the previous Symbol any frequency,
Comparison / coincidence control of digital data of the received signal strength signal that has received the transmission signal of the arbitrary frequency set by sequentially reading and setting the reference digital data is adjusted for each frequency that is sequentially set And generating transmission output level control data at an arbitrary frequency set in sequence ,
Storing said transmission output level control data, characterized by comprising pressurizing et al.

In the transmission output adjusting method of a wireless communication device, characterized by further comprising the step of displaying the digital data of the received signal strength No. Doshin.

  According to the present invention, it is not necessary to perform complicated adjustment for each frequency point for setting the transmission output level, and after the initial setting of one point, the transmission output level is automatically adjusted for an arbitrary frequency. Thus, it is possible to provide a transmission output adjustment apparatus and method for a wireless communication apparatus that can reduce adjustment time and transmission output level setting errors.

  An embodiment of a transmission output adjusting device for a wireless communication device according to the present invention will be described with reference to the drawings. FIG. 1 is a circuit block diagram of transmission output adjustment of a wireless communication device according to the present invention. Transmission output adjustment of the wireless communication device Adjustment of the transmission level is performed by the transmission unit 10, the transmission output level adjustment device 20, and the reception unit 30. FIG. 2 is a device block diagram for adjusting the transmission output level of the wireless communication device 50 having the circuit block of FIG. An attenuator 51 is inserted between the transmission output terminal 19 and the reception input terminal 31 of the wireless communication device 50, and a power meter 52 is connected to the transmission output terminal 19.

  1, the modulated wave of the modulated transmission signal unit 11 and the first transmission frequency of the first transmission frequency unit 13 are mixed in the first mixer circuit 12 and pass through the first bandpass filter 14. . The passed signal is mixed with the second transmission frequency of the second transmission frequency unit 16 in the second mixer circuit, passes through the second band-pass filter 17, and is further amplified by the high-frequency power amplifier 18 to be transmitted from the transmission output terminal 19. Sent.

  In the transmission output level adjustment device 20 of FIG. 1, the CPU 21 reads an initial set frequency preset in the storage unit 22, and the first transmission frequency unit 13, the second transmission frequency unit 16, and the reception unit 30 of the transmission unit 10. The initial set frequency data is sent to the receiving frequency section 36 of The transmission unit 10 mixes and transmits the transmission signal of the transmission signal unit 11 with the received frequency data. In order to set the transmission output level to a predetermined value, the digital-analog converter 23 is operated from the key input unit 24, and the reference voltage of the differential amplifier 25 is set so that the power meter 52 of FIG. The differential amplifier 25 controls the transmission output level of the high frequency power amplifier 18 according to the reference voltage.

  When a predetermined transmission output level is obtained, the adjustment value at this time is set as initial control data, and the transmission signal is input to the reception terminal 31 of the reception unit 30 of FIG. 1 via the attenuator 51 of FIG. Passes through the bandpass filter 32. This signal is amplified by the high frequency amplifier 32, passes through the second band pass filter 34, is mixed with the reception frequency of the reception frequency unit 36 in the mixer circuit 35, and passes through the third band pass filter 37. The passed signal is amplified by the intermediate frequency amplification circuit 38 and input to the reception signal strength display signal detection unit 26 of the transmission level adjustment device 20.

  The signal (RSSI signal) detected by the received signal strength display detection unit 25 is converted into digital data by the analog / digital converter 27 and input to the CPU 21. The CPU 21 stores this digital data in the storage unit 22 as reference digital data for the initial control data.

  When the reference digital data is set, the CPU 21 sequentially reads the frequencies set in advance in the storage unit 22 and starts adjusting the transmission output level for the read frequencies. As in the case of the initial setting, the CPU 21 obtains the digital data of the RSSI signal obtained by receiving the transmission signal corresponding to the read frequency from the analog / digital converter 27. The digital data is compared with the reference digital data read from the storage unit 22, and the digital-analog converter 23 is controlled until they match, and the adjustment is repeated. If they match, the control data at this time is stored in the storage unit 22 as transmission output control data for the frequency. The adjustment for the next frequency and the storage of the control data are repeated again. In operation, the CPU 21 reads the adjustment value data for the frequency designated by the operator from the memory unit 22 and sends it to the digital / analog converter 23 to set the transmission output level.

  Further, the CPU 21 controls the electric field intensity display unit 28 so that the reference digital data with respect to the initial set frequency becomes the display center value. Thereby, it is possible to monitor the process of adjusting the transmission output level with respect to the sequentially read frequencies. Also, by recognizing this display as an image, it is possible to automatically monitor the adjustment process for a very large number of set frequencies, and adjustment trouble can be avoided immediately.

  The circuit configuration shown in FIG. 1 may be any circuit or device as long as it realizes the function, and a part of the function can be realized by software. Furthermore, the function realizing means may be realized by a plurality of circuits, and a plurality of functions may be realized by a single circuit.

  FIG. 3 is a flowchart showing output adjustment processing in transmission output adjustment of the wireless communication device of the present invention. Arbitrary frequencies including the initial set frequency are set in the storage unit 22 (step 100). The initial set frequency is read, and the initial set frequency data is sent to the first transmission frequency unit 13 and the second transmission frequency unit 16 of the transmission unit 10 and the reception frequency unit 36 of the reception unit 30 (step 105). The transmission unit 10 mixes the transmission signal of the transmission signal unit 11 with the received frequency data, and transmits an initial transmission output (step 110). In order to set the transmission output level to a predetermined value, the digital / analog converter 23 is operated from the key input unit 24 to adjust the initial transmission output (steps 115 and 120). When a predetermined transmission output level is obtained, the adjustment value at this time is set as initial control data (step 125). The transmission signal is detected as an RSSI signal by the receiving unit 30, converted into digital data, and stored in the storage unit 22 as reference digital data for the initial control data (step 130).

  When the reference digital data is set, the CPU 21 sequentially reads the frequencies set in advance in the storage unit 22 (step 135). A transmission output for the read frequency is transmitted (step 140). CPU21 displays the digital data with respect to the RSSI signal obtained by receiving on the electric field strength display part (step 145). The CPU 21 compares the digital data of the RSSI signal with the reference digital data read from the storage unit 22, controls the digital-analog converter 23 until it matches, and repeats the adjustment (step 150, step 155). If they match, the control data at this time is stored in the storage unit 22 as transmission output control data for the frequency (step 160). The adjustment for the next frequency and the storage of the control data are repeated again (step 165). When the next frequency is no longer set, the adjustment is terminated (step 170).

  As described above, according to the transmission output adjustment apparatus and method of a wireless communication apparatus of the present invention, it is not necessary to perform complicated adjustment for each frequency point for setting the transmission output level. Therefore, it is not necessary to consider the number of frequency setting points, and after initial setting of one point, the transmission output level is automatically adjusted for any frequency, so that the adjustment time and the transmission output level setting error can be reduced. It becomes possible to reduce at the same time. In addition, an automatic monitoring system for adjustment by image recognition can be easily constructed, and the adjustment process can be made more efficient.

The circuit block diagram of the transmission output adjustment of the radio | wireless communication apparatus by this invention. The apparatus block diagram for adjusting a transmission output level. The flowchart which shows the output adjustment process by this invention. The circuit which shows the transmission output level adjustment of the conventional radio | wireless communication apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Transmission part 11 Modulation transmission signal part 12 1st mixer circuit 13 1st transmission frequency part 14 1st band pass filter 15 2nd mixer circuit 16 2nd transmission frequency part 17 2nd band pass filter 18 High frequency power amplifier 19 Transmission output terminal 20 Transmission output level adjusting device 21 CPU
DESCRIPTION OF SYMBOLS 22 Memory | storage part 23 Digital-analog converter 24 Key input part 25 Differential amplifier 30 Reception part 31 Reception input terminal 32 1st band pass filter 33 High frequency amplifier 34 2nd band pass filter 35 Mixer circuit 36 Reception frequency part 37 3rd band pass Filter 38 Intermediate frequency amplifier 40 Transmission output level adjustment unit 50 Wireless communication device 51 Attenuator 52 Power meter

Claims (4)

A transmission output adjustment device for a wireless communication device that automatically adjusts a predetermined transmission output level for an arbitrary frequency,
A transmission output level control unit for controlling the transmission output level of the arbitrary frequency based on transmission output level control data;
A received signal strength Doken out section which detect the intensity of the received signal which has received the transmission signal in the desired frequency,
An analog-digital converter to produce a digital data the received signal strength No. Doshin by analog-to-digital conversion,
In order to set to the predetermined transmission output level, the transmission output level control unit so that the transmission output level becomes a predetermined output level with respect to a transmission signal of an initial setting frequency read out from the arbitrary frequency A key input unit that controls the initial control data,
After setting the initial control data for the initial set frequency, of the initial set frequency the arbitrary of the received signal strength signal received transmission signals at frequencies that are sequentially set as a reference digital data of the received signal strength signal to the transmission signal Comparison / coincidence control with digital data is performed by controlling the transmission output level control unit for each frequency set in sequence , and transmission output level control data to the transmission output level control unit corresponding to the arbitrary frequency is generated A processor to
Wherein said arbitrary frequency, including the frequency of the initial setting, and the reference digital data of the received signal strength No. Doshin for said predetermined transmission output level set in the initial control data corresponding to the frequency of the initial setting, the a storage unit for storing said transmission output level control data at any frequency to be sequentially set, transmission output adjusting device of a wireless communication device, characterized by comprising pressurizing et al. Transmission output adjusting device of a wireless communication apparatus according to claim 1, further comprising a field strength display section for displaying the digital data of the received signal strength No. Doshin. A transmission output adjustment method for a wireless communication device that automatically adjusts a predetermined transmission output level for an arbitrary frequency,
Storing an arbitrary frequency for setting to a predetermined transmission output level in a storage unit;
Reading an initial setting frequency for setting the predetermined transmission output level from the arbitrary frequency;
Wherein the transmission power level adjusted based on the initial set frequency transmission signal of the transmission output level control data, and answering step to set the initial control data,
Generating a reference digital data to said initial control received signal strength No. Doshin which receives the transmission signal data to definitive and analog-to-digital conversion,
Storing the reference digital data ;
And sequentially reading step the previous Symbol any frequency,
Comparison / coincidence control of digital data of the received signal strength signal that has received the transmission signal of the arbitrary frequency set by sequentially reading and setting the reference digital data is adjusted for each frequency that is sequentially set And generating transmission output level control data at an arbitrary frequency set in sequence ,
Step a, sending output adjusting method of a wireless communication apparatus, characterized by comprising pressurizing et storing the transmission output level control data. Transmission output adjusting method according to claim 3, wherein the wireless communication device, characterized by further comprising the step of displaying the digital data of the received signal strength No. Doshin.

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