RU2154900C1 - Device for amplification of radio signal power - Google Patents

Abstract

FIELD: radio electronic equipment, in particular, for communication. SUBSTANCE: device has input filter, diode protection unit, control and indication unit, two switching units, sockets, amplifier, low-power antenna amplifier. EFFECT: increased reliability, simplified design. 1 dwg

Description

 The invention relates to the field of radio electronics and can be used to increase the effect of ground and air communications, having a small radiated power of 10-20 W in the UKB range (with FM mod.). These are radio stations: military, communications of the Ministry of Internal Affairs, Ministry of Railways, exploration, commercial, etc. And also for use in medicine in order to increase power in medical devices.

 Known power amplifiers containing a transistor, electronic communication, light signaling [1, 2, 3, 4].

 The disadvantages of these devices are low efficiency, large dimensions and weight, high current consumption due to low efficiency, incompatibility of high-frequency connectors with domestic equipment.

 Closest to the technical nature of the present invention is a multi-mode power amplifier HL-180 W, containing a transistor, electronic communication, light signaling [5].

 However, the well-known power amplifier has a large current consumption, large dimensions and weight, as well as the lack of electronic protection.

 The invention is aimed at improving reliability and simplifying the design.

 This is achieved by the fact that in the device for amplifying the power of the radio signals along the supply voltage circuit, an input filter connected to the connector, a diode protection unit, a control and light signaling unit are connected in series, the output of the latter is connected to the first switching device into which the amplifier is inserted, the first output it is connected to a second switching device.

 The drawing shows a schematic block diagram of the proposed device for amplifying the power of radio signals, containing seven independent nodes made on discrete elements, transistors, diodes, inductance capacitors, microstrip lines for general use.

A device for amplifying the power of radio signals contains switching devices 1 and 1 ', an input filter 2, designed to prevent impulse noise from the ignition system, radio homing, diode protection unit 3, which serves to protect the power amplifier from accidental polarity reversal and protection against current overloads, unit control and light signaling 4, amplifier 5, which increases the output power of the connected devices, low-power antenna amplifier 6. For the supply of voltage and signal there are connectors x ₁ , x ₂ , x ₃ .

 A device for amplifying the power of radio signals works as follows.

A voltage of 12-15 V is supplied from the DC source to the connector x ₃ , while the voltage taken from the output filter 2 is supplied to the diode protection unit 3, then to the control and light signaling unit 4, which only works in automatic mode, i.e. e. there is no need for external switching devices from one mode to another (reception / transmission) without applying a high-frequency voltage to the input. The control unit and light signaling 4 signals a two-color green indicator, which signals the reception mode of operation. The signal from the antenna device comes from connector x ₂ to the switching device 1. When applying high-frequency voltage to the input from connector x ₁ without supplying voltage, the switching devices 1 and 1 'pass through them without loss the voltage of the high-frequency signals, working in this case as a coordinated segment of the coaxial lines through the connector x ₁ and when the supply voltage x _{3 is} applied, the control and light-signaling unit 4 includes an amplifier 5 operating in class C, which increases the signal supplied to the input of the device through connector x ₁ , at least 10 times. At the same time, it automatically switches the coaxial line from input to output of the device. Thus, the automatic mode of reverse operation is received and transmitted. During reception, the two-color indicator of the control unit and light alarm 4 glows green, and during transmission changes its color to red. Moreover, the power of all nodes occurs in the protection unit 3.

 The advantages of the proposed device are that the design is simple, reliable in vibration and temperature, has a large radius of action, has small overall dimensions and weight, full domestic equipment, can be operated both in stationary and in mobile conditions.

Sources of information
1. P. Felks "750 Practical Schemes". Ed. 20/4008.

 2. Erich Tart Red (translated from German) "Reference manual on high-frequency circuitry." Ed. Peace.

 3. "Powerful semiconductor transistors." Ed. Radio and communication. 1985

 4. A.M. Chernushenko "Designing screens and microwave devices." Ed. Radio and communications., 1990

 5. Prospectus "Multimode power amplifier" (prototype).

Claims (1)

 A device for amplifying the power of radio signals, comprising an input filter, a diode protection unit, a control and light signaling unit, switching devices and connectors, characterized in that an input filter connected to a power source through a connector, a diode protection unit, a unit is connected in series to the supply voltage circuit control and light signaling, the input of the latter is connected to the input of the first switching device, into the circuit of which an amplifier is inserted, its first output is connected to the second switching device TSS, and a signal transmission circuit of the second circuit entered a low power antenna amplifier output and an input respectively connected to said first and second switching devices, equipped with high-frequency assembly, wherein a control unit interconnected with the signaling and switching devices automatic selection mode.