RU180812U1 - INTERSEQUENT REGENERATOR OF QUASI-STATIONARY SEQUENCE OF SUBNANOSECOND RADIO PULSES - Google Patents

Abstract

The utility model relates to radio-pulse regeneration devices in high-speed stroboscopic digitization systems, namely to an inter-period regenerator of a quasistationary sequence of subnanosecond (SNA) radio pulses, consisting of an active amplifier covered by positive feedback, a high-speed key, an attenuator, two delay lines and a buffer amplifier digitization of ultrashort-pulse non-stationary wave processes with an unstable shaped time electrode the dynamics of the distribution of the electric field component strength in the problems of ultra-wideband radio vision and radio monitoring. The utility model provides the regeneration of a quasi-stationary sequence of up to 30 identical SNA radio pulses.

Description

The utility model relates to radio-pulse regeneration devices in high-speed stroboscopic digitization systems and can be used for parametric studies and prototyping of a periodically cyclic repeater of subnanosecond (SNS) signals for digitizing ultrashort-pulse non-stationary wave processes with unstable shape-time electrodynamics of the field of the electric field and the voltage of the electric field and .

Work on the search for methods and means of high-speed digitization of subnanosecond (SNA) signals has been underway since the middle of the last century and the main areas of research are somehow related to stroboscopic reception and processing using time-scale conversion (MVP) methods [Koltsov Yu.V. Methods and tools for the analysis and formation of ultrashort pulse signals. Monograph. - M .: Radio engineering, 2004. - 128 p.], Strobe-frame-discretization (SFD) [Budagyan I.F. et al. Strobe-frame-discretization of radio pulses of the subnanosecond range / Radio engineering and electronics, 2017, V. 62, No. 5, p. 486-492; Budagyan I.F. et al. Attack digitization of ultrashort pulses in hybrid systems of radio photon scanning / Journal of Radio Electronics, 2016, No. 3], etc. In this regard, these methods do not allow the processing of unsteady SNA pulses.

While the proposed utility model allows you to compensate for this drawback and for the first time to explore the possibility of receiving unsteady SNA pulses using high-speed digitization.

The technical result achieved by the proposed utility model is to ensure the regeneration of a quasi-stationary sequence of up to 30 identical SNA radio pulses, allowing high-speed stroboscopic digitization for a single reception using time-scale conversion and strobe-frame sampling.

The indicated technical result is achieved by an inter-period regenerator of a quasistationary SNA sequence of radio pulses, consisting of an active amplifier covered by positive feedback, the gain of which is determined by the ratio of the values of resistors R3 and R2, with a high-speed switch U1 for supplying a pulse to the SNA input and passing it through the specified amplifier and an attenuator in the form of a delay element LW2 with resistors R5 and R4, for the time of switching the shoulders UI delayed by the specified delay line, for re-amplification through a positive feedback circuit, and in parallel for stroboscopic conversion through a buffer amplifier,

moreover

where X _LW2 is the delay line impedance.

The proposed regenerator allows the digitization of ultrashort-pulse non-stationary wave processes with unstable form-time electrodynamics of the distribution of the electric field component strength in the problems of ultra-wideband radio-vision and radio monitoring.

The proposed utility model is built on the elements of high-speed semiconductor electronics and implements the regenerative function of converting an unsteady SNA pulse into a series of quasistationary SNA pulses with a given frequency for subsequent high-speed stroboscopic digitization.

In FIG. 1 is a schematic electrical diagram of the interperiodic regenerator of a quasistationary sequence of subnanosecond radio pulses.

The principle of operation of the inter-period regenerator is based on the final multiple repetition of the SNS pulse received at the input XI of the key U1 due to the positive feedback of the amplifier U2.

Simultaneously with the arrival of the SNA pulse, the key control signal U1 is passed to input X2, passing through line LW1 with a delay of at least the pulse duration. Further, the SNA pulse passes through the amplifier U2 (the gain is determined by the ratio of the values of the resistors R3 to R2) and is delayed by the line LW2, while switching the shoulders U1. Then the SNA pulse is fed to the attenuator formed by the elements LW2, R4 and R5, and from it in parallel to:

- further stroboscopic conversion through the buffer amplifier U3 (the gain is determined by the ratio of the values of the resistors R8 to R7) to output X4;

- to the input of the amplifier U2 through positive feedback, through the switched arm U2.

Thus, the fading SNS pulse is re-amplified through the delay time of the LW2 line and the cycle repeats. Obviously, for the implementation of sustainable generation, the following conditions must be met:

where X _LW2 is the delay line impedance.

Capacities C1, C2, C3, C4 perform a separation function, resistors R1 and R6 - a bias function.

It should be noted that the elemental base and component ratings are selected based on the working band of the regenerator. For example, for the 1 GHz band, you can use the electronic component base with the following parameters:

U1 - NMS-C011;

U2 - AD8003;

C1, C2, C3, C4 - 100 pF;

R1, R6, R7, R8 - 10 kOhm;

R2, R4 - 510 Ohms (subject to X _LW2 <<R4);

R3, R5 - 51 kΩ;

LW1 - duration ≈1 ns;

LW2 - duration ≈10 ns.

Claims (3)

An intermittent regenerator of a quasistationary sequence of subnanosecond (SNA) radio pulses, consisting of an active amplifier covered by positive feedback, the gain of which is determined by the ratio of the values of resistors R3 and R2, with a high-speed switch U1 for supplying a pulse to the SNA input and passing it through the specified amplifier and attenuator in the form of a delay element LW2 with resistors R5 and R4, for the time of switching the shoulders UI delayed by the specified delay line, for re-amplification through positive feedback, and in parallel for stroboscopic conversion through a buffer amplifier, moreover

where X _LW2 is the delay line impedance.

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