SU1292161A1 - Radio pulse frequency multiplier - Google Patents

Abstract

The invention relates to radio engineering. The purpose of the invention is to reduce the level of frequency noise with an increase in the multiplication ratio. The device contains 1 source of input signal, source 2 of constant voltage. capacitors 4, 5, 8, Gunn diode 6, inductance coil, output I filter 11, which is made in the form of a diode. a resonator connected via a strip line 14 to a Gann 6 diode, and using a strip line 15 to an output of a device. Transistor 3, diode 7 with a sharp recovery of reverse resistance, adjustable resistor 10, resistors 12, 13 are newly introduced. The signal from diode 7 determines the initial amplitude and phase, stabilizes the value of the initial phase and the position of the leading edge of the radio pulse. The control signal from transistor 3 determines the stationary mode of generation and breakdown of oscillations. Filter 11 determines the frequency of filling the radio pulse and filters out unwanted components from the spectrum of the output signal. 1 il. sl to with ND O

Description

The invention relates to radio engineering and can be used to multiply the frequency of a signal in transceiver and measurement equipment.

The purpose of the invention is to reduce the level of frequency noise with an increase in the multiplication ratio.

The drawing shows a circuit diagram of the proposed radio pulse frequency multiplier.

The radio frequency multiplier contains an input source 1, a constant voltage source 2, a transistor 3, the first and second capacitors 4 and 5, a Gunn diode 6, a diode 7 with a sharp recovery of the reverse resistance, a third capacitor 8, an inductor 9, an adjustable resistor 10 output filter 11, the first and second resistors. 12 and 13.

Radio pulse frequency multiplier works as follows.

The signal from the output of the source 1 input signal through the transition capacitor 4 is fed to diode 7 with a sharp restoration of the reverse resistance and through the transition capacitor 5 to the base of transistor 3 connected in a circuit with a common collector. Using the source 2, resistors 12 and 13, the working point of the transistor 3 is set. The negative half-period of the signal from the output of source 1 opens the transistor 3 and the control voltage is applied to the auto-oscillator assembled on the Gunn diode 6 Gunn. Upon receipt of the same negative half-period on. the diode 7 is locked and due to the appearance of a sharp restoration of its reverse resistance, a short powerful pulse is formed. The duration and amplitude of the pulse can be controlled by changing the parameters of the coil 9 of the inductance and the adjustable resistor 10, the duration being chosen such that it is equal to 1/2 of the oscillator time of the oscillator on 6 Gunn diode, noise level. This pulse through the transition capacitor 8 enters directly into the diode circuit 6

Gann.

I

The output filter 11 is made in the form of a dielectric resonator

five

0

five

0

five

0

five

0

five

using a strip line 14 with a 6 Gunn diode, and using a strip line 15 - with the output of a radio frequency multiplier.

At the moment of excitation a noise oscillation is present in the output filter 11, an oscillation excited by shock excitation, and a signal from diode 7. Since the signal from diode 7 exceeds the level of the remaining oscillations, it determines the initial amplitude and phase of the radio pulse and independence these parameters from the dynamic forces of the autogenerator. As a result, the signal from diode 7, which determines the initial amplitude and phase, stabilizes the value of the initial phase and the position of the leading edge of the radio pulse, and the control signal from transistor 3 determines the stationary mode of oscillation and oscillation failure. A dielectric resonator (output filter 11) determines the frequency of filling the radio pulse and filters out unwanted components from the spectrum of the output signal.

Claims (1)

Invention Formula A radio frequency multiplier containing a Gunn diode, one of the electrodes of which is connected to the common bus and the second electrode to the input of the output filter, the input signal source and the first capacitor connected in series, the inductance coil and the second capacitor in series, and the third capacitor and the constant source voltage, characterized in that, in order to reduce the level of frequency noise with an increase in the multiplication ratio, a series-connected adjustable resistor is introduced into it, the first resistor and the second resistor, the second output of which is connected to the common bus, the transistor whose collector is connected to the output of a constant voltage source and to the connection point of the adjustable resistor with the first resistor, the emitter to the second electrode of the Gunn diode and the first output of the third capacitor, and base - with the point of connection of the first and second resistors and the second output of the second capacitor, as well as a diode with a sharp restoration of the reverse resistance, one of whose electrodes 312921614 connected to the common busbar, and the second inductor with the second electrode to the second lead of the first capacitor, with the second lead of the capacitor, the second lead of the third inductance loop connected to the second capacitor and with a connecting point of the adjustable resistor.