Duplex noise generator
The invention relates to radio engineering microwave and can be used as a measure of the noise temperature with an accurate noise measurements: small levels of noise temperature signal sources, small losses and noise parameters of a two-port, as well as for embedded control systems for various purposes. Duplex noise generator contains emitter noise with two outputs made in the non-semiconductor device with Schottky barrier (PPBS), valve, switch, and two loads, and the first emitter output noise PPBS connected to the input of gate whose output is the output two-level noise generator, a second emitter output noise PBX connected through the switch either to the first load or the second. DGS has two stationary States with output levels of noise temperature T1(0,2...0,5)To and T2(1...3)To, switchable external command. The technical result is to increase the operational characteristics of the device. 1 Il. The invention relates to radio engineering microwave and can be used as a measure noise temperature (PCS) with accurate noise measurement is Snykov, and for built-in test and calibration systems for various purposes.In known two-tiered noise generator (DGS)  the possibility of reducing the level of T1 is limited by the losses made by a directional coupler connected between the emitter of a "cold" noise and valve, ensures the independence of the characteristics DGS from external loads.The closest technical solution (prototype) is DGS , in the design which eliminated redundant circuit elements in the output circuit of the cascade radiation "cold" noise and thereby provided the conditions for the complete realization of the potential used field-effect transistor. The disadvantage of this solution is that the provision of the second (high temperature) noise level achieved by the use of additional active nodes (noise generator to spent or amplifier) that significantly affects the size, power consumption and reliability of the device.The aim of the invention is to improve the operational characteristics of the device by eliminating unnecessary active nodes and optimize the generator mode noise while maintaining the other advantages of the prototype.Those requirements can be met predlagayuschie noise 4, made in the non-semiconductor device with Schottky barrier (PBS) and having two outputs - one output-side shutter, and the second output-side drain valve 5, techplace switch 3 and two loads 1 and 2 are connected respectively to the first and second shoulders of the switch. The second emitter output noise PBS 4 is connected to the common (third) arm of the switch 3 and, depending on the provisions of the latter, alternately connects either to the load 1 or load 2; the first emitter output noise PBS 4 is connected to the input of gate 5 whose output serves as the output two-level noise generator.The proposed construction of a two-tiered noise generator works as follows: when the external command control switch 3 connects the second emitter output noise PBS 4 load 1, its parameters determine the emitter noise 4 mode corresponding to the low-temperature radiation noise, and output DGS through the valve 5 receives the noise power to the noise temperature T1(0,2...0,5)To; when the switch 3 connects the second emitter output noise PBS 4 load 2, its parameters determine the emitter of the noise mode is suitable is 2(1...3)To. Excessive increase in the level of T2 leads to the shift of the mode PBS in the zone of instability.Thus, when the maximum simplification of the circuit, DHS has two stationary States with output levels T1(0,2...0,5)To and T2(1...3)To, switchable external command.Sources of information 1. RF patent 2127483. Topolnicki Century. N. Duplex noise generator. // Bull. 7, 1999.2. RF patent 2168847. Kamenetz Y. A., Topolnicki C. N., Usdin R. I. Duplex noise generator. //.......
ClaimsDuplex noise generator containing emitter noise with two outputs made in the non-semiconductor device with Schottky barrier (PPBS) valve, techplace switch controlled by external commands, and the first load, the parameters which determine the emitter noise mode corresponding to the low-temperature radiation noise, characterized in that in the scheme entered the second load, the parameters which determine the emitter noise mode corresponding to the high-temperature radiation noise level, and the first emitter output noise PPBS connected to the input of gate, the output of which is what recluctant or to the first load, or the second load.
FIELD: measurement technology; pulse stream generators.
SUBSTANCE: proposed Poisson pulse stream generator has k + 1 memory devices, comparison unit, k digital-to-analog converters, control circuit, register, counter, selector, k bell-shaped pulse generators, adder, voltage-to-current converter, and clock generator.
EFFECT: enlarged generation range of pulses adequate to ionization chamber signals.
1 cl, 2 dwg
FIELD: radio engineering.
SUBSTANCE: proposed generator of integrated design that can be used as source of random electromagnetic waves has two resistors, two capacitors, negative-conductivity device, and negative-conductivity parallel RC circuit.
EFFECT: simplified design, enlarged operating frequency range.
2 cl, 6 dwg
FIELD: radio engineering.
SUBSTANCE: proposed vibroacoustic noise generator that can be used in information protection systems to produce noise signal for blocking voice information interception from locations designed for secret negotiations has microphone, microphone amplifier, log amplifier, splitter, n band filters, n scramblers, n random pulse generators, adder, power amplifier, and radiator. Effectiveness of noise signal produced by generator is independent of generator location, acoustic properties of room, vibration properties of guarding structures and engineering services, and type of radiators connected to generator.
EFFECT: enhanced efficiency of noise signal.
1 cl, 1 dwg
FIELD: radio engineering; chaotic electromagnetic wave sources.
SUBSTANCE: proposed chaotic wave oscillator has negative-resistance nonlinear device, capacitor, two inductance components, and resistor; current-voltage characteristic of negative-resistance device is such that voltage across its terminals is unambiguous function of current flowing through this device.
EFFECT: minimized quantity of circuit components.
2 cl, 5 dwg
FIELD: pulse generators.
SUBSTANCE: proposed random-length pulse generator that can be used for signal simulation in data transfer systems and produces random-length pulses of desired statistical characteristics has frequency standard, delay line, multiplexer, pseudorandom number generator, adding unit, and flip-flop.
EFFECT: enhanced precision and stability.
1 cl, 1 dwg
FIELD: technology for processing and producing images, in particular, device can be used for forming random vector field with given statistical characteristics of synthesized realization.
SUBSTANCE: known vector generator, having noise generator, digital filters, connected to first input of adder, multiplexers, random numbers generator, n blocks of serial adders, control block, device for visual output, additionally has analysis block. Outputs of analysis block are connected to inputs of control block. Outputs of noise generator are connected to n blocks of digital filters, outputs of the latter are connected to inputs of n blocks of serial adders. Outputs of n blocks of serial adders are connected to n multiplexers, outputs of the latter are connected to device for visual output.
EFFECT: possible registration of nonlinear statistical dependencies of random-generated realization.
FIELD: radio engineering; random-wave sources.
SUBSTANCE: proposed random-wave oscillator that incorporates provision for nonlinear signal conversion independently of physical standard values of its circuit components has inductive component, two capacitors, resistor, and nonlinear impedance converter whose transfer characteristic is described by specified equation.
EFFECT: enlarged regulation range of random-signal parameters.
2 cl, 5 dwg
FIELD: technology for generating artificial interference for concealing electromagnetic channels leaking speech information.
SUBSTANCE: in accordance to invention, method includes generation, amplification and emission of concealing noise signal, and also substantial changes and additions, namely: noise signal is amplified in mode B or AB, pulse automatic-compensating stabilization of power amplifier powering voltage is utilized, stabilized voltage is filtered by upper frequencies filter, lower limiting frequency is higher than upper frequency of audible spectrum, but lower than frequency of pulse stabilizer.
EFFECT: increased efficiency of method while power for concealed equipment is delivered by industrial alternating-current network.
FIELD: measurement technology; generating test signals with preset probability characteristics.
SUBSTANCE: proposed method for generating test signal incorporating desired distribution probability function F(x) concerning occurrence of instant test signal amplitude values x(t) depends on generation of original signal r(t) with uniform distribution of instant amplitude values within the range of 0 to 1 and its functional conversion; generated as original signal r(t) is determinated signal with period T0 for which purpose signal φ(t) varied obeying known law and using desired algorithm is functionally converted.
EFFECT: enhanced precision of generated signal incorporating desired probability distribution function.
FIELD: radio engineering.
SUBSTANCE: proposed noise generator that can be used in small-size noise transmitters and data protection systems for blocking mobile telephone communications by generating masking noise has n amplifying components and two integrated feedback-interconnected multiple-resonant oscillatory systems.
EFFECT: enhanced high value of generated noise in broad frequency range at same mean noise power.
1 cl, 4 dwg