SU1515345A1 - Automatic matching device - Google Patents

Abstract

The invention relates to radio engineering and can be used in radio transmitters. The purpose of the invention is to reduce the time and increase the accuracy of tuning, as well as increase the reliability. The device contains a traveling wave ratio sensor (IPC) 1, a controllable switch 3, an element 4 with a control inductance, an element 5 with a controllable capacitance, an antenna 7, a resistor 8, and a control unit 11. To achieve this goal, a 2 phase sensor, a switch 6, a control key 9 and a resistor 10 are inserted into the device. When the keys 3 and 9 are open, the sensor 1 provides information about the active load conductance, and when closed, it shows the active resistance. In block 11, the voltage is monitored at its third input, setting the permissible rate of reduction of the IPM load, when going beyond the limits of which a command is issued to emergency shutdown of the radio transmitter. 4 il.

Description

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The invention relates to radio engineering and can be used in radio transmitters.

The aim of the invention is to reduce the time and povigenie tuning accuracy and reliability.

Figure 1 shows a structural electrical circuit of an automatic matching device; Fig. 2 illustrates an exemplary embodiment of the control unit of an automatic matching device; FIG. 3 shows complex conduction diagrams for antennas with capacitive and inductive components of loads; FIG. 4 shows an example of an embodiment of a traveling-wave coefficient sensor.

Automatic matching of the minimum inductance and capacitance respectively.

Then, a control signal is supplied to the exciter from the output of the second ICBM 17, by which the radio transmitter enters a reduced power mode. In block 11, signals from measuring 10 outputs of sensors 1 and 2 are received through the first MBR 16, which are not read out and processed.

The signals arriving at block 11 from the measurement outputs of sensors 1 and 2 must meet certain 15 conditions, which is achieved by fulfilling the following requirements when calibrating sensors 1 and 2.

Calibration of the 1 KBV sensor is performed using variable resistors; the sensor contains 1 coeffidien-20 mover 28 and 29 so that switching

that traveling wave (KBV), sensor 2 faf

The first controllable key 3, the auxiliary output voltages of sensor 1 at the first and third inputs of block 11 to the logical zero state occurred at the first input at a load 25 equal to 2p / (- / 5-1), at the third input - with a load resistance equal to L J5, where p is the finite input impedance of the matching device; L is the required value of an IPM at the input of an automatic matching device (for example, 0.9). Thus, the signal of the logical unit appears at the first input of block 11 at the IPM load, and at the third input - at.

ment 4 with controllable inductance, element 5 with controllable capacitance, switch 6, antenna 7, first resistor 8, second control key 9, second resistor 10, and control unit 11.

Control unit 11 microprocessor 12, reiiepaTop 13 clock pulses, read-only memory 14, random access memory 15, first 16, second 17, third 18 and fourth 19 multi-mode buffer registers (MBR), input device 20 and inverter 21 .

Sensor 1 KBV contains a current transformer 22, capacitive voltage divider 23, detector diodes 24 and 25, operational amplifiers 26 and 27, and variable resistors 28 and 29 and outputs 30 and 31. The sensor IPB also has locking elements and elements of communication.

The automatic matching device operates as follows.

According to the signals from the exciter of the radio transmitter to the block 11, the program embedded in it is launched. In block 11, control signals are generated, which through the second MBR 17 are fed to the control inputs of the first and second controlled keys

3 and 9 and set them in the open position. The signals from the outputs of the third and fourth MBR 18 and 19 are fed to the inputs of the control elements

4 and 5 and set them in position

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minimum inductance and capacitance respectively.

Then, a control signal is supplied to the exciter from the output of the second ICBM 17, by which the radio transmitter switches to the reduced power mode. In block 11, signals from measuring 10 outputs of sensors 1 and 2 are received through the first MBR 16, which are read and processed therein.

The signals arriving at block 11 from the measurement outputs of sensors 1 and 2 must meet certain 15 conditions, which is achieved by fulfilling the following requirements when calibrating sensors 1 and 2.

The calibration of the 1 KBV sensor is performed using variable resist0

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the output voltages of sensor 1 on the first and third inputs of block 11 to the logical zero state occurred at the first input at load 5 equal to 2p / (- / 5-1), at the third input - at load resistance L J5, where p - but the final input resistance of the matching device; L is the required value of an IPM at the input of an automatic matching device (for example, 0.9). Thus, the signal of the logical unit appears at the first input of block 11 at the IPM load, 6, and at the third input - at.

The calibration of the phase sensor 2 is performed so that the voltage switching at the input of the block 11 from the state of the logical unit to the state of logical zero occurs when the sign of the load reactivity changes from inductive to capacitive.

In the operation of the proposed device, the following provisions are used: the 1 KBV sensor loaded on the series-connected resistor R1 and the load (where p / (o-1) is equivalent to the active load conductivity sensor, and the sensor 1 loaded on the parallel-connected resistor R2 and load (where (/ 5-1) / 2), is equivalent to the active resistance sensor.

Thus, when the first and second controlled keys 3 and 9 are open, the sensor 1 provides information about the active conduction of the load (elements 4 and 5 and antenna 7), and when closed, its active resistance.

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Based on the information received, the configuration of the matching link is selected and, using signals from the output of the fourth MBR 19, the switch 6 and the first and second controlled keys 3 and 9 are set to the positions corresponding to this configuration. Then, elements 4 and 5 are sequentially adjusted. The l-shaped link, the first and second controlled keys 3 and 9 are opened, and to adjust the element 5 in the 1-link link, they are closed. The subsequent tuning process is illustrated by the complex load conductivity diagrams (Fig. 3). In the first case, the antenna impedance Z is capacitive in nature (initial point a). For the pony signal

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The power U of the second input of block 11 is zero. In this case, block 11 issues a command to close the first and second controlled keys 3 and 9. The voltage U, at the first jr input of block 11, is equal to a bullet, since the load resistance is smaller.

According to the results of processing the corresponding signals arriving at block 11, in accordance with the program embedded in it, a command is issued to turn on the G-link, and element 3 is transferred to the maximum inductance position. At the same time, the input terminal. After completion of these operations, the corresponding outputs of the block 11 receive commands to close the first controlled key 3, open the second controlled key 9 and turn on the radio transmitter in full power mode. In this case, unit 11 monitors the voltage Va of its third input (U) coming from the second measurement output of sensor 1 and setting the permissible rate of reduction of the IPM load, beyond which the radio transmitter shuts down.

Claims (1)

Invention Formula An automatic matching device containing series-connected traveling-wave coefficient sensor and a first resistor, in parallel with which a first controllable 30 key is connected, a series-connected element with a controlled inductance and an antenna, an element with a controlled capacitance and a control unit, the first, second and third the outputs of the control unit are connected to the control inputs Given is shifted upwards (point b, fig. 3), according to the first control, the voltage U becomes equal to the zero key, the element from the controllable, since the conductivity is active on the core less than 1 / p. At zero the value of U on the first input of block 11 from the output of the third MBR-18 block 11 to the control input of element 4 receives control signals, by which the inductance of element 4 is reduced to those an inductance and an element with a controlled capacitance, and the first input of the control unit is connected to the first measuring output of the traveling-wave coefficient sensor, whose input is the input of an automatic matching device, characterized in that, in order to reduce the time and increase the tuning accuracy, as well as to increase reliability, a switch, a phase sensor and a second control switch connected in series and a second resistor, the other output of which is connected to the common bus, and the input and output of the phase sensor are connected With the other pins, respectively, of the first resistor and the element with a controlled inductance, the pins of which are also connected to the corresponding inputs of the switch, the measurement output of the phase sensor is connected to the second input of the control unit, and the perpendicular until the input load conductance becomes 1 / p (point b, Fig. 3). Then, in block 11, the voltage is analyzed at its second input (and, until it returns zero, the control input of control element 5 from the output of the fourth MBR 19 of block 11 receives control signals, according to which eat spine member 5 is increased. When the voltage is equal to zero at the second input of the block 11, the input load impedance, connected to the output of the sensor ... 2, turns out to be the corresponding value 55 nitor p at the phase of the load impedance equal to zero (point g, fig.Z). Similarly, the adjustment of the 1-link link is made (Fig. 3, points a, 5, c, d). After the completion of these operations, the corresponding outputs of the block 11 receive commands to close the first controlled key 3, open the second controlled key 9 and turn on the radio transmitter in full power mode. In this case, unit 11 monitors the voltage Va of its third input (U) coming from the second measurement output of sensor 1 and setting the permissible rate of reduction of the IPM load, beyond which the radio transmitter shuts down. Invention Formula An automatic matching device containing a series of traveling-wave coefficient sensor and a first resistor, in parallel with which a first controllable switch is connected, series-connected element with controllable inductance and antenna, element with controllable capacitance and control unit, with the first, second and third outputs control unit connected to the control inputs controllable key inductance and element with controlled capacitance, and the first input of the unit ch The control unit is connected to the first measuring output of the traveling-wave coefficient sensor, whose input is the input of an automatic matching device, characterized in that, in order to reduce time and increase tuning accuracy, as well as increase reliability, a switch, a phase sensor and the second control connected in series are introduced key and the second resistor, the other output of which is connected to the common bus, while the input and output of the phase sensor are connected to the other terminals of the first resistor and the control element, respectively inductance, the outputs of which are also connected to the corresponding inputs of the switch, the measurement output of the phase sensor is connected to the second input of the control unit, the first the secondary and secondary outputs of which are connected to the control inputs of the switch and the second controlled key, respectively; the element with the controlled capacity is connected between the switch output and the common bus; the traveling wave coefficient sensor is equipped with a second measurement output, which is connected to the third input The length of the control unit, the input of the second control key is connected to the output of the traveling-wave coefficient sensor, the resistance of the first resistor R1 and the second resistor R2 correspond to the values, where p is the nominal input resistance of the automatic matching device, and К (- О / 2. 7 20 / D 73 2 -about g " r L v f3 About raz 7 1-73, S G-p-cffrrst ABOUT / / X Figz 15 18 /  f 17 13 about razr i. FIG. 2 aS i but L ± J l ::: gi  /five h Hhihh 4