DE1951760A1 - Infinitely adjustable electroacoustic delay device - Google Patents

Description

Patent attorney ^^ ROBERT MÜNZHIJBER

WIDEKMITICS. ί · J (OS 11) IX »β ΙΟ, se Bl ge

A 39769

October 14, 1969 Ml / He / Sc

SANDERS ASSOCIATES, INC., Daniel Webster Highway South, Nashua , New Hampshire / USA

Infinitely adjustable electroacoustic delay device

The invention relates to an electrical delay device, in particular a continuously adjustable electroacoustic delay device.

Attempts have hitherto been made in two ways to overcome the problem of continuously adjustable electrical delay lines. One way was through creation of delay lines of two or more elements made of non-piezoelectric material. The delay was achieved in such an apparatus by shifting the individual delay elements onto one another, so that thereby the W-lengths between the input and Output converter can be enlarged or reduced. There are several disadvantages to this route:

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rambtrg £ 51 M Bonkriau "Mara, Finde & Co., Munich, No. 25 444 I Bankhaus H. Aufhaut", MOndien, No. 261300 Posiidiedt. Indian 1536

Munich 308 04

_ ₂ _ 1351760

Especially the contact area between the individual delay elements can lead to unwanted reflections of the acoustic waves, including the accuracy with that an input signal is delayed suffers. In addition, wear and tear is always to be expected when bodies rub against each other. whereby the usability of the device is further reduced. These mechanically adjustable delay lines do not respond quickly and have limited bandwidth.

The second solution are the electro-optical delay lines, in which the extension of the delay time through spatial adjustment of an optical system compared to an acoustic delay line is achieved. Such delay lines are generally very expensive and must also be mechanically manipulated when adjusting the delay time. The response time of such devices is undesirably long and the setting range of the delay time is rather limited.

It is therefore the main object of the invention to provide an electroacoustic delay device in which the Delay time is continuously adjustable by electronic means.

Another object is to create a device of the type described above in which the delay

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time is changed by deflecting a beam formed from charged particles, which 'on a delay element Acts that have different distances from the acceptance device.

The further aim of the invention is to provide a device as described above described type are created, which has only a single electroacoustic transducer as a delay element.

The device according to the invention should also have a very short response time.

Another sub-object of the invention is to provide a device of the type described above, the Setting range for the delay time is very large.

There? The device according to the invention should also be able to be to produce long signal chains.

Another object of the invention is to create a new delay memory.

An additional object of the invention can be seen therein to create novel means of squeezing computer bandwidth.

It is also an object of the invention to provide means:;, by unlimited delay times from the input

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to achieve given signals by using echo technology.

Another object of the invention is to provide a continuously adjustable electrical delay device to create, in which a piezoelectric transducer contains means for generating secondary electron immission, in order to amplify the signal generated by the action of the electrically charged particle beam.

It is also an object of the invention to provide an apparatus of the type described in which multiple sources for charged particles and multiple sampling devices can be used to simultaneously measure multiple input signals cause a delay.

According to the invention, a continuously adjustable electrical delay device is used to achieve the object created which contains an electroacoustic delay element with, for example, a piezoelectric transducer, a source of electrically charged parts such as an electron beam gun; means such as electrostatic ones Deflector plates for deflecting the charged particles and output terminals connected to the retardation element are. This entire facility is contained in a protective enclosure that is either evacuated or covered with a suitable one Protective gas can be filled. The source for the loaded

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Particle that is excited by an input signal creates a focused beam of charged particles, the is deflected so that it occurs at a point on the electroacoustic delay element that is from the output terminal has a certain distance. The impact of the charged particles on the retardation element generates an acoustic wave in it, which has a known and fixed speed travels through the delay element to a tap point where it is converted into an electrical signal is converted back. It can be understood from this that with the apparatus provided by the invention, the delay time can be set to a desired value in a simple manner by a certain deflection of the particle beam can, since the speed of sound propagation in

in

a particular delay element is known exactly to the for the particle beam through the product of the desired delay time and the acoustic speed of sound given distance for the impingement of the beam is chosen. The delay time can thus be set continuously and precisely only with the aid of electronic control means.

The features and properties described above and advantages of the invention will be provided by what follows Description of the embodiments shown in the drawing even more clearly apparent. Show it:

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Fig. 1 is a schematic representation of a continuously adjustable delay device according to the invention;

FIG. 2 shows a further exemplary embodiment of a Delay device according to the invention with a secondary electron amplification device;

Fig. 3 in a schematic representation third embodiment of the delay element according to the invention with a very long delay time;

Fig; 4 shows another embodiment of the device according to the invention Means for changing the position of the charged particle beam;

Fig. 5 is a schematic representation of pins

Embodiment according to the invention with a plurality of delay elements;

6 shows a schematic representation of an exemplary embodiment the device according to the invention, in which several input signals are delayed simultaneously can;

7 shows an echo beam deflection device, which is constructed according to the principles of the invention.

C In Fig. 1 is a schematic view of a continuous

adjustable electrical delay device shown, which is constructed according to the characteristics of the invention. The device comprises a source of charged particles, indicated generally at 10, a deflection system for these particles and a retardation element 14. The source for these charged particles is as ordinary electrical · nenstrahlkanone with a cathode 16, a grid 18 and

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an anode assembly 20 is shown. Between cathode 16 and anode assembly 20 becomes one of a power supply device 22 resulting acceleration voltage applied. A transmitter for the input signals 24 lies between Cathode 16 and grid 18, so that the beam is more charged Particles 26 can be intensity or amplitude modulated.

The deflection system 12 can be constructed in the conventional manner from electrostatic deflection plates 28 and JO and 52 and 54 which act in the longitudinal and vertical directions and which are connected to corresponding voltage sources j6 and J> Q. However, magnetic deflection yokes of the known type can also be used with the invention.

The delay element 14 has an electro-acoustic converter 15, which will be described in more detail later and which rests on a base plate 40 and is provided with output terminals 42 and J \ h at its two ends. Acoustic termination elements 46 and 48 made of lead, tin, quartz or some other suitable material, the function of which will be described in more detail later, are arranged at the ends of the transducer in connection with the connection terminals. All of these elements described are accommodated within a housing 50, only a small part of which is shown and in which certain ambient conditions prevail. In which

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shown embodiment, this environment is inherently borrowed a vacuum. The housing 50 is preferably made of Glass, but ceramic materials or metal can also be used. The delay device thus has about the structure of a cathode ray tube.

During operation, a signal to be delayed is applied from the signal feed 24 between 16 and grid 18. One DC voltage from the power supply 22 between Cathode 16 and anode assembly 22 is applied, accelerated the charged particles emanating from the cathode 16 so that they pass through the anode arrangement 20 and are bundled to a particle beam and thereby to the deflection system 12 arrive. The input signal modulates the intensity of the particle beam 26.

The baffles 28 and 30, 32 and 34 are voltage sources 36 and 38 variable voltage connected. In the illustrated embodiment, the plates 32 and 34 are used for the transverse deflection of the beam 26 and ensure that the Beam impinges on the transducer 15. The baffles 28 and 30 take care of the deflection of the beam 26 in the direction of the longitudinal axis of the transducer 15 and cause the beam to hit the transducer ' at a certain distance from the extraction connections 42 and hits. The amount of delay that an input signal takes on obtained in this way is determined by the degree of longitudinal deflection of the Particle beam 26 is determined and is directly dependent on the

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voltage across the deflectors 28 and J50, which comes from the voltage source 36 .

If the charged particles of the beam 26 strike the transducer 15, then at the point 52 an electrical Charge built up, and an electric field pervades the transducer 15 · Under the influence of the electric field comes the transducer I5 in. acoustic resonance, creating an acoustic Wave in both directions from point 52 towards removed from the longitudinal axis of the transducer. When the acoustic wave passes through the transducer, an electrical charge is attached to the Surface of the transducer generated, which runs with the acoustic wave. If the shaft now reaches the extraction ports 42 and 44, so the charge that has been generated on the surface of the transducer by the acoustic wave can pass through the lines and 56 are removed. The acoustic terminations 46 and 48 absorb the wave as it has passed over the extraction ports 42 and 44, thereby causing reflection of the acoustic wave back into the transducer 15 is prevented. This prevents incorrect delay times from occurring, which would be possible if there were reflections. The acoustic terminations 46 and 48 also prevent that the desired acoustic waves intersect with the reflected and they influence each other, whereby the actual signal would be corrupted.

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Since the time required for the acoustic wave to pass through the transducer medium is known and a is a fixed value, and since the longitudinal deflection of the beam is continuously controllable via the deflection voltage on the longitudinal deflection plates, the beam (and thus the incoming signal) can be given a certain delay by changing the voltage applied to the longitudinal baffles can be varied as desired. It goes without saying that this delayed The signal can be tapped from both the extraction connection 42 and the connection 44 or from both connections, when more than one delayed signal is required.

The electron beam cathode 16 can be a directly or indirectly heated cathode with an oxide cathode material for which e.g. barium oxide, calcium oxide or strontium oxide are suitable. It can also be heated, treated with thorium Tungsten cathodes are used like any other material that has its thermal work function as a result of its temperature is able to emit enough electrons. But electron sources can also be used, which are generally referred to as cold cathodes and their electronic properties in conjunction with a suitable one electric field, which is applied, allow the desired electron emission without heating. To this category

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The cold cathode also includes the materials made by external or internal radiation such as isotope radiation or ultraviolet radiation can be excited to donate electrons. as Electron sources also usable materials are photoelectric, their electron emission not through the application of high temperatures or electric fields but through Energy transfer between electromagnetic quanta and a free or bound electron in the photoelectric Material itself produced x ^ ird. There are also some materials which already have a usable electron emission due to their geometric design when they are in a suitable electric or magnetic field.

The delay device can also be constructed so that ion sources can be used which are similar to the electron sources described above are constructed and act. The vacuum environment is then created by an appropriate Replaced protective gas environment. If the polarity of the deflection and acceleration voltages remain the same, they become negative Ions radiated onto the transducer. When the voltage is reversed, it is the positive ions that reach the converter. In either case, however, the operation and required elements are the same as above in connection with one

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Describe electron beam. -

As mentioned, the Wanüler 15 is an electroacoustic transducer and consists of a material that under the influence of electrical Impulse gets into acoustic resonance and creates an acoustic wave passing from the point of impact of the impulse to another Points in the converter is running. These materials also include those that cause a generate acoustic or "slow wave". Generally speaking Materials that are useful as acoustic transducers have one or more of the following properties: They are piezoelectric, pyroelectric, thermoelastic, piezomagnetic, magnetoelastic, thermomagnetic, electrostatic or ferroelectric. As an example of materials that are "piezo-electric, Have pyroelectric and thermoelastic properties, fine crystalline quartz and cadmium sulfide may be mentioned. Examples of materials with ferroelectric properties are lead zirconate, barium titanate and sodium-potassium niobate. An example of a material with magnetoelastic shafts is yttrium iron garnet, commonly known as "YIG". . :: - ■■■

It will be understood by those skilled in the art that although the

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Delay device of the type described is continuously adjustable, and a tube is also possible with a fixed set delay by applying a constant voltage to the deflection system or by creating a deflection system to which a fixed DC voltage is fed. It will also be understood that the invention can be used as a feedback delay device or those with an echo effect can be used. It then only needs the output signal from the output terminals 42 and 44 are fed back to the input for the source of the charged particles via a feedback line 4j5, as this is shown in dashed lines in Fig. 1 to a return of the signal.

Fig. 2 shows a modified embodiment of the acoustic delay element 14, which is used in a delay device of the type described in FIG. 1 can be used. The electroacoustic converter 15 is also on here a base plate 40 is arranged. The removal connector strips 42 and 44 and the acoustic end pieces 46 and 48 have the same Construction and the same mode of operation as those described in FIG. In this embodiment, however, there is a thin layer of insulating material 58 with high secondary emission placed on the side of the beam incidence of the transducer 15. These

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Layer is made of a material such as sodium chloride, Barium fluoride, magnesium oxide or aluminum oxide, to name just a few of the possible materials. In this way the amplitude of the electrical impulses generated by the impact of the charged particles is increased, so that signals of high intensity arise. The secondary electrons emitted by layer 58 in the direction away from transducer I5 are emitted with the help of a secondary electron collector grid 6O picked up at which one from a voltage source 62 applied positive voltage is; in actual embodiments, this voltage source can be the same such as the voltage source 22 required for the acceleration voltage in FIG. 1. The secondary electrons are captured that they do not fall back on the transducer 15 and then may generate false acoustic waves that the Would interfere with the perfection of the device in the same way as reflected acoustic waves.

In addition, another feature is shown in Fig. 2, by which several signals can be delayed and mixed at the same time. A second source of electrical input signals 63 may be provided to one of the extraction ports 42 or 44

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can be connected, and the two signals can be in the converter 15 mixed and the combined signal can then be removed from the other extraction port ■ 42 or 44.

Fig. 5 shows schematically a further embodiment of the electroacoustic delay element, which can be used with advantage in the invention. In this embodiment the eiktroacoustic transducer 15 is in the form of a Spiral on the base plate 4O. In this way it is possible to have a spatially very long delay element in a small volume accommodate. . ■.

A further exemplary embodiment of the invention is shown in FIG. 4, in which the same parts are also denoted by the same reference numerals. In this embodiment, a DC voltage source 22 is connected to the cathode 16 and the anode 20, and a DC voltage originating from the voltage source 64 is between the cathode 16 and the grid 18. The delay device is in this way provided with bias voltage, that it is constantly in a conductive state. The voltage sources 22 and 64 are drawn separately here, but in reality they can be used in a single voltage ---

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source exist. Another voltage source 36 with variable Voltage is applied to Q.uerablenkplatten J2 and 34, see above that, if no voltage is applied as an input signal, the particle beam 26 impinges on a spot 52a which leads to a Side of the 'converter I5 is. Another voltage source 38 leads a voltage for the longitudinal deflection to the plates 28 and 30, whereby the particle beam 26 with a certain distance meets the converter at the extraction connections 42 and 44, where are the distances of the delay imparted to an input signal should be communicated are directly proportional.

In operation, the voltage source 24 is the input signals connected to the transverse baffles 32 and 34. Is not an input signal is present, the particle beam strikes a spot 52a, which lies laterally next to the transducer 15, and No signal can be picked up at the extraction connections 42 and 44 are «The variable voltage 38 is used for the longitudinal deflection of the partial beam to a position 52b, which the the desired distance from the extraction connections 42 and 44 results. When there is an input signal from the voltage source 24 is the tension on the transverse baffles 32 and changed so that the particle beam is deflected in the transverse direction and hits the transducer 15, for example in the spot 52. One

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acoustic VJeIle is thus generated in the transducer 15, as has already been done has been described above, and the delayed signal can be taken from the take-out terminals 42 and 44. It will Input signal from the transverse deflection plates 32 and 34 removed again, so the particle beam leaves the spot 52 and returns to the layer 52a laterally next to the transducer 15 back.

This embodiment of the invention can also be used as Echo delay device can be used when providing feedback 4j is provided by then adding the delayed signal is fed back to the input of the delay device.

Figure 5 is a further schematic illustration of another embodiment of the invention by which an input signal can receive multiple different delays. In this exemplary embodiment, the delay element 14 has a plurality of transducers JO, 72 and 74, which all consist of different electroacoustic materials and are arranged on a base plate 40. The acoustic waves that are generated in these transducers travel from the point at which the particle beam strikes the transducers at a speed i which is characteristic of the individual materials of the transducers 70, 72 and 74. In those shown in FIG

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three transducers, an input signal from the source 24 can receive six different delay times. The delayed signals can be from each individual or from all extraction connections 76 to 86 removed v / earth. Acoustic end pieces 88 and 90 are also provided here to prevent unwanted reflections to avoid.

A further embodiment of the invention is shown in FIG. 6, in which several input signals can be delayed and mixed at the same time. The same parts are denoted here with the same reference numerals. In this embodiment there are several particle sources 10 and 10 ', each of which is assigned a deflection system 12 and 12', so that they both work together with a delay element ~ \ h . In many cases it is desirable to mix a plurality of signals. To make this possible, a first signal from a first signal source 24 is fed to the cathode 16 and the grid 18. The intensity-modulated first particle beam 26 is then deflected by the first deflection system 12 to a specific point 52 on the transducer 15. In this way, a first acoustic wave is generated in the transducer, which is then transmitted in the described manner in the longitudinal direction to the extraction connections

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k2 and 44 is coming. The second particle source 10 'with the associated deflection system 12' works in the same way and generates and deflects a second particle beam 26 ', which is also intensity-modulated by a second signal from the signal source 24'. In the drawing, the second particle beam 26 ′ strikes the point 52 ′ on the transducer 15, which point is at a certain distance from the point 52 of the first particle beam 26. It is of course also possible for the two points 52 "and 52 'to coincide if it is desired that the two input signals have the same delay time. The waves generated by the impingement of the first and second particle beams 26 and 26' in the acoustic transducer are now received the desired delay so that the delayed signals can then be tapped mixed at the extraction connections 42 and 44. The acoustic end pieces 46 and 48 have the same structure and the same mode of operation as was already described above with reference to FIG. 6 Child shows the two particle sources 10 and 10 'with their two deflection systems 12 and 12' only with a simple delay element 14, but within the scope of the invention it is also possible, in the presence of several particle sources according to Pig also to use several delay elements, as shown in FIG.

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Fig. 7 shows schematically a so-called reverse beam retardation device, which works according to the basic idea of the invention. Again, like parts are the same Reference numerals denoted. In this embodiment, a visual writing beam 26 of charged particles in a .Teilchenquelle 10 and generated by input signals 24 of a signal source modulated and deflected by the deflection system 108, so that the write beam on the electroacoustic transducer 15 hits. The transducer 15 lies on a base plate 40 acoustic end pieces 46 and 48 on both ends and a coating 58 made of secondary electron donating material. 'As already explained earlier, the impact of the charged particles on the transducer 15 causes acoustic signals Waves generated which travel in the longitudinal direction through the "transducer starting from the point of impact of the particle beam 26. In Connection with this acoustic wave is also running electric charge wave along the surface of the transducer 15. This charge has the same polarity as the charged particles of the beam 26. If an acoustic wave has been generated in the transducer 15, the beam can be charged by Particles are deflected in such a way that it takes approximately the course 26a, a corresponding distance X in the longitudinal direction from the point of impact of the write beam 26 corresponds. The acoustic wave in the transducer and the associated electric charge wave

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runs through the distance X from the point of impact of the write beam in a precisely known time. If now the charged reading beam 26a is deflected in the manner shown and hits the transducer at the moment when the electric charge wave passes this point, the electric charge wave exerts a repulsive electric force on the particles of the beam and the beam 26a essentially reflected back onto the particle source. The returning beam 26b then left a modulation in the acoustic wave that was originally in the input. signal was present. A type of screen 100 is attached in front of the particle source 10 in order to prevent the charged particles of the returning beam 26b from being able to directly enter the particle source 10 again. The returning beam 26b then reaches a plurality of diodes 102a to 102e, which multiply the charged particles, and then to a particle detector anode 104, where the corresponding delayed signal is then picked up via an output line 106. In Fig. H- only a simple particle source is shown, but several particle sources can also be used, as shown in Fig. 6, so that several signals can be applied to the transducer and also removed from the transducer at the same time.

In the reverse jet device shown here according to FIG

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Invention is the preferred magnetic deflection system 108 shown, such an arrangement has the advantage that the returning Beam 26b practically does not affect beam 26a.

The goals listed in the introductory section are like the Description has shown, achieved and numerous changes are possible without departing from the spirit of the invention is left. The exemplary embodiments are only available as Explanations, but in no way to be understood as a limitation of the invention.

■. - 23 - ■ • "" Claims

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Claims (1)

PATENT CLAIMS (1J device for delaying an electrical input signal, characterized by at least one device (10) for generating a beam (26) of electrically charged particles as a function of the input signal, at least one converter (ΐ4) with at least one extraction outlet line connected to it (42, 44), which depends on the occurrence of the Electrically charged particles generated a signal from the point of impact (52) to the Eritnahmeausgangsleitung (42, 44) with running at a certain speed, and means (12) for directing the charged particle beam so that it hits the transducer (14) meets on any desired point that is a distance from the extraction output terminal, so that the input signal is delayed by a period equal to the distance between the On troff puiikt and the withdrawal of the output ski is proportional. 2. Device according to claim 1, characterized in that they are enclosed in a housing (50) with certain conditions is. 3 · Device according to claim 2, characterized in that the electrically charged particles electrons and the ambient 009819/1376 - 24 - conditions are essentially a vacuum. 4. Device according to claim 2, characterized in that the electrically charged particles are ions and the ambient conditions are a gas. 5. Device according to claim 3> characterized in that the means for generating the electron beam is an electron source (16), means for accelerating the electrons (20) and means for focusing the electrons. 6. Device according to claim 1, characterized in that that the deflection means (12) are changeable, so that .der. At the JF point (52) of the beam on the transducer (14) in relation to the
Output terminal (42, 44) can be changed, whereby the delay time of the input signal is variable. That the beam deflector comprises Ruch 6, characterized in that (1.2) electrostatic deflection plates (28, 30), (32, 3 ² O, the variable to a voltage source voltage (36, 38) are connected |: 7. Device according to Ans. 8th. . Device according to claim 6, characterized in that the variable deflector comprises an electromagnetic deflection coil (108). 009019 / $ 137 9. Device according to claim 1, characterized in that the converter (14) has a plurality of output tapping connections (42, 44). - 10. Device according to claim 1, characterized in that deß the transducer is an electroacoustic transducer in which a acoustic wave is generated, which then from the point of impact (52) migrates towards the pick-up output terminals (42, 44) at a fixed, known speed and produces an electrical signal at them. 11. Device according to one of claims 1 to 10, characterized by acoustic end pieces (46, 48) at the ends of the Converter (15)> in which the acoustic wave after passing through of the transducer is absorbed to the end, so that no reflection takes place. 12. Device according to claim 1, characterized by a feedback (43) with a withdrawal output line (42, 54) the device (10) generating the particle beam, so that the signal is again input into the device. 13. Device according to one of the preceding claims, 00 ** 10/137 * -26- characterized in that on the surface of the transducer (15) a layer (58) is arranged which emits secondary electrons. "· 14. Device according to claim Ό, characterized by a Secondary electron collector (6O, 62), the charged particles emitted by the cover layer, which are directed away from the transducer, intercepts and prevents their return to the converter. 15 · Device according to claim 1, characterized in that the transducer (15) is designed in a spiral shape, so that a large transducer length can be accommodated in a small volume can (Fig. 3). . "- 16. Device according to claim 1, characterized by several parallel transducers (70, 72, 7 ^) with which the input signal can be delayed in many ways. - ■■■■ -. - ^ 17 · Device according to claim 16, characterized in that that each transducer (70, 72, 74) from a different electroacoustic view Material with the material's own speed of propagation for the acoustic waves. 18,. Device according to Claim 1, characterized by an additional signal input device (10 ¹ ) connected to the converter 009819 / $ 137 (14) is in connection and the an additional input signal is zugführt, whereby the first input signal and said additional input signal are combined in the converter (14), and the combined signal at the sampling output terminals (l \ j? 44) is removable (Figure 6). 19. Device according to claim 1, characterized in that a plurality of beam-generating devices (10, 10 ') are provided which each generate a beam of electrically charged particles (26, 26') as a function of one of a plurality of electrical input signals (24, 24 ') ), and means (1?., 12 ') are provided for deflecting the beams so that each ¹ beam (26, 26') hits the transducer (14) at a certain point (52, 52 ') at a distance of the extraction output terminal (42, ^ 2 ') - hits, whereby a plurality of input signals are delayed and in the ^ converter (1 ^). is combined. 20. Device for delaying an electrical input signal, characterized by at least one device for Generating a substantially uniform beam electrically charged particles, at least one transducer with at least one extraction output terminal connected to it, which in dependence from the impact of the electrically charged particles 00 9 819/1376 - ^ - BATH ORIGINAL a signal generated from the point of impact in the direction of the Withdrawal output terminal at a certain speed: running ^. and means (12) for deflecting the beam of electrically charged particles to which the input signal (24) is switched, i which deflect the particles across the transducer in the absence of an input signal and direct the particles in the presence of an input signal to be at any desired point at a distance ^from the extraction output terminals. ; ,, '/ ■ ■ {, converter hit, thereby converting the input signal. a tent, -, ..-'..- ■ ·. span is delayed, which is proportional to the distance between the point of impact (52) and the removal output terminal (42, 44), (Fig, 4),. _. ■ - 21. Device according to claim 20, characterized in that that it is inserted in a housing with certain environmental conditions,. . ■ .-- ': .- ■■ -' "..... .- 22, device according to claim 21, characterized in that dä3 the electrically charged particles are electrons, and the ambient conditions are essentially a vacuum.,. , 25. Device according to claim 21, characterized in that ,,> that the electrically charged particles are ions and the ambient conditions are a gas,. ..-. ".-. V." "- '009810/137 $ - 29 ■' - :. ^ .. ■ '. ■ ßAD OHlGlNAL 24. Device according to claim 22, characterized by a Electron source (16), means (20) for accelerating the electrons and means to focus on them. 25. Device according to claim 20, characterized in that the deflecting device (12) is variable in order to guide the beam (26) to an impingement point (52) on the transducer (15) which is at a different distance from the extraction output terminal (44) , whereby the delay time of the input signal can be changed. 26. The device according to claim 25, characterized in that the deflection device (12) transversely and longitudinally deflecting electrostatic deflection plates (34, 32,30, 28), wherein the
Transverse deflection plates (32, 34) the input signal (24) is switched on and the longitudinal deflection plates (28, 30) are connected to a voltage source of variable voltage (38). 27. Device according to claim 25, characterized in that that the deflector is an electromagnetic yoke. 28. Device according to claim 20, characterized in that the converter has a plurality of output extraction connections. 00981β / 137g "■" _ir -. ORIGINAL 29 · Device according to claim 20, characterized in ;, that the transducer is an electroacoustic transducer in which when an electrically charged particle hits an acoustic Wave is generated, and the acoustic wave then from the point of impact migrates to the output terminals at a certain known speed and generates an electrical signal there. 30. Device according to claim 29, characterized by acoustic End pieces (46, 48) at the ends of the "transducer (15) in which the acoustic waves are absorbed to the end after passing through the transducer, so that practically no reflection takes place. 31. Device according to claim 20, characterized by a ' Feedback 4j5 from the extraction output terminals (42, 54) to Signal input, which causes the signal to be repeated in the device direction is entered. 32. Device according to claim 20, characterized in that the surface * of the transducer (15) is covered with a secondary electron-emitting layer (58). 33. A device according to claim 32, characterized by a Seködärelektronenkollektor (60, 62) emanating from the emission layer, from the transducer entferntnde charged particles - 009119/1378 - • - *.;. M. \, <, «. I. . BADORlGfNAL -31- so that they do not fall back on the converter. 34 ·. Device according to claim 20, characterized in that that the transducer is constructed in a spiral, so that a considerable Length can be accommodated in a small volume. ^ · 35. Device according to claim 20, characterized in that that several transducers (70, 72, 74) are arranged parallel to one another are, which allows the input signal to have multiple delay values. 36. Device according to claim 35, characterized in that that the transducers are made of different electroacoustic material exist with different wave propagation speeds. yj . Device according to Claim 20, characterized by a further signal input device (24 *) which works together with the converter (14) and to which an additional input signal is fed, whereby the first and second input signals are combined with one another in the converter and the combined signal is picked up at the extraction output terminals will.. 009819/1376 BATH ORIGINAL j8. Device according to Claim 20, characterized in that several beam generating devices (10, 10 ') are provided, all of which generate beams (26, 26') of electrically charged particles as a function of several electrical input signals and deflection devices (12, 12 ') generate the beams so that they hit the transducer (14) at certain points (52, 52 ') at a distance from the extraction output terminals (42, 44), whereby several input signals are delayed and combined with one another in the transducer. 39 · Device for delaying an electrical input signal, characterized by means (10) for generating a Beam of electrically charged particles (26) in dependence on the input signal, at least one transducer (14), the at least has a removal output terminal (42, 44) and depending on the The impact of the electrically charged particles generates a signal. that in the transducer from the point of impact gu of the removal outlet terminal (42, 44) runs at a certain speed, means to the Beam of electrically charged particles to a given first and second point at a distance from the 'Entnahmeausgangskiemrrje and steer at a distance from each other, making the electric charged particles at the second point of the signal ^ the one in front of the first Point running through the transducer, reflected 009819/1376 and means (104) for detecting the reflected charged Tdlchen so that the input signal by a period of time is delayed, which is proportional to the distance between the first and second points. 40. Device according to claim j59 / characterized in that that they are housed in a housing with certain environmental conditions is. 41. Device according to claim 40, characterized in that the electrically charged particles are electrons and the ambient conditions are a vacuum. 42. Device according to claim 40, characterized in that the electrically charged particles are ions and the ambient conditions are a gas. 4; 5. Device according to claim 4.1, characterized in that that the means for generating an electron beam is an electron source (16), means for accelerating the electrons (20) and means for focusing the electrons. 009819/1376 BATH ORIGINAL 44. Device according to claim 39, characterized in that that the beam deflector is variably adjustable to direct the beam direction onto the points on the transducer (14) to be able to each other and to the Entnahmeausgangsklemraen (42, 44) have a variable distance, so that the size of the Time delay of the input signal is variable. 45. Device according to claim 44, characterized in that that the beam deflectors have electrostatic deflectors that are connected to voltage sources of variable voltage are. - * 46. Device according to claim 44, characterized in that that the variable deflection devices include an electromagnetic deflection yoke (108). 47. 'Device according to claim 41, characterized in that that the detection means a plurality of electron multiplier diodes (102) in the vicinity of the electron generation device (10) and an electron-sensitive anode, which depends on the reflected electrically charged particles generates an output signal. • ■ '■' ■ '.. _ ■■■' ■ -35 - 00981971378 - ■ ■ .-. ' BATH 48th. Device according to claim 39 * characterized in that that the transducer is an electroacoustic transducer in which one acoustic wave due to the impact of the electrically charged particles generated viird, and the acoustic wave in the transducer one electric charge of the same polarity of electrically charged particles is generated, so that the reflection of the electrically charged particles are effected by Coulomb's forces. 49 · Device according to claim 48, characterized in that that acoustic end pieces (46, 48) are provided at the ends of the transducer, which the acoustic waves after passing through of the handler and thus avoid reflections. 50. Device according to claim 39 * characterized by a feedback (4j) of the sensing device (104) with the beam generating device (10), which enables the signal to be fed back into the device. 51. Device according to claim 39, characterized by a Secondary electrons emitting layer on the incoming one Electron beam facing transducer side. 52. Eini'ichturg according to claim 51 * characterized by a ..vekuuärelektiOiienkollektor (60, 62), which the from the pavement ■ - 36 - 009819/137 6 BATH ORIGINAL - -36 - layer catches charged particles flying away so that these cannot fall back on the converter. 0098 19/13 76