SU525229A1

SU525229A1 - Delay line active

Info

Publication number: SU525229A1
Application number: SU1971960A
Authority: SU
Inventors: Виктор Михайлович Плужников; Петр Григорьевич Иванов; Петр Григорьевич Алексеев; Александр Николаевич Алексеев; Анатолий Иванович Токарев; Виктор Степанович Бондаренко; Наум Исаакович Басовский
Original assignee: Московский Ордена Трудового Красного Знамени Инженерно-Физический Институт; Предприятие П/Я М-5075
Priority date: 1973-11-22
Filing date: 1973-11-22
Publication date: 1976-08-15

Description

1one

Изобретение относитс к области радиотехники СВЧ и может найти применение в системах обработки радиолокационных сигналов .The invention relates to the field of microwave radio technology and may find application in radar signal processing systems.

Известны ультразвуковые линии задержки , выполненные в виде многогранной призмы с одной или несколькими отражающими поверхност ми, содержащие входной и выходной преобразователи сигнала 1.Ultrasonic delay lines are known, made in the form of a multifaceted prism with one or several reflecting surfaces, containing input and output signal converters 1.

Основным недостатков , устройств такого типа вл етс значительное ослабление сигнала при его прохождении по звукопроводу и отражении на гран х.The main disadvantage of devices of this type is a significant weakening of the signal as it passes through the acoustic duct and reflected on the edges.

Наиболее близким техническим рещением к данному изобретению вл етс активна лини задержки, содержаща многогранный звукопровод с плоскопар)аллельными отражающими гран ми, входной и выходной преобразователи поперечной волны сигнала, преобразователь продольной волны накачки и поглотитель 2.The closest technical solution to this invention is the active delay line, which contains a multifaceted acoustic duct with plane pairs, allele reflective edges, an input and output transverse wave transducer, a longitudinal pump transducer, and an absorber 2.

Усиление сигнала, а, следовательно, и компенсаци вносимых потерь в этой линии задержки невысоки вследствие использованиThe signal gain, and, therefore, the compensation of the insertion loss in this delay line is low due to the use of

однократного взаимодействи волн сигнала и накачки.one-time interaction of the signal waves and pumping.

С целью повыщени компенсации вносимых потерь в предлагаемой активной линии задержки преобразователь продольной волны накачки и поглотитель установлены на гран х , нормальных к плоскопараллельным отражающим гран м, а угол наклона граней на которых расположены входной и выходной преобразователи поперечной волны сиг нала, к отражающим гран м определен отношением скоростей распространени соответственно продольной и поперечной волн Vf nVtIn order to increase the compensation of the insertion loss in the proposed active delay line, the converter of the longitudinal pump wave and the absorber are installed on the faces normal to the plane-parallel reflecting faces, and the angle of inclination of the faces on which the input and output transverse wave transducers are located is defined the ratio of propagation velocities, respectively, of longitudinal and transverse waves Vf nVt

arccos -у| arccos y |

На чертеже представлена схема активно линии задержки.The drawing shows the active circuit of the delay line.

Claims

The sound duct 1 is made in the form of a multifaceted prism with parallel reflective faces 2 and 3. On the face 4 there is a converter 5 of the longitudinal pump wave, and on the opposite face 6 there is an absorber 7. The input transducer 8 of the transverse wave and the output transducer 9 respectively, are placed on the faces Yun 11, and these faces are located to parallel reflective faces m 2 and 3 under the arccos -, where Vt is the propagation velocity of the longitudinal pump wave VC is the propagation velocity of the transverse wave of the signal. The device operates as follows. The transverse wave of the signal is excited by the input transducer 8 of the transverse wave of the signal and, after reflection from the parallel reflecting faces 2 and 3, is received by the output transducer 9 of the transverse wave of the signal. The longitudinal pump wave is excited by the converter 5 of the longitudinal pump wave and, propagating through the sound duct 1, repeatedly intersects the transverse wave of the signal and then absorbs by the absorber 7. The signal is amplified only if the nonlinear interaction of these waves is accompanied by the formation of a difference combinational wave . This mode is achieved by setting the input and output transducers 8 and 9 of the transverse wave signal at an angle arccQS- parallel to the reflecting facets m 2 and 3. Thus, obtaining additional signal amplification makes it possible to increase the compensation for insertion loss. Repeated intersection of the signal and pump waves at the optimum (from the point of view of signal wave amplification) increases the effect of this controlled delay line in comparison with known devices. An activated delay line comprising a multifaceted sound line with plane-parallel reflective edges, an input and output transverse wave signal transducer, a longitudinal pump wave converter, and an absorber, characterized in that, in order to increase compensation for insertion loss, the longitudinal pump wave converter and the absorber are set to facets x normal to plane-parallel reflective faces, and the angle of inclination of the faces, on which the input and output transducers are located Signal wavelengths, to reflective edges, are determined by the ratio of propagation speeds, respectively, of the longitudinal and transverse waves, Ve and Vt. 0 arc COS. Sources of information taken into account during the examination: 1. Avt. St. No. 341138, cl. STO 7/30, 197O (analog);

2. Physical Rei /. Letters 1964, 12, No. 12, pp. 325-327 (prototype).