DE146303C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

The effect of the optical concave mirror can be determined with the use of Huyghens Understand the principle as if the individual parts of the mirror were independent light sources which, however, have a phase difference caused by the different distance of the parts from the radiation source is determined. This phase difference resulting from the geometrical relationships

ίο produce themselves directly with electric waves, without a single source of radiation, as is the case with optical phenomena must go out. As a result, greater energy radiation can be emitted in this way enable. This direct excitation of a concave mirror composed of individual conductors in a known manner can z. B. can be achieved by connecting them to the pathogen by means of wires, the phase shifts then being achieved by the different lengths of the connecting wires. Instead of the direct Excitation can also be inductive excitation through transformation or with influential electricity can be selected with the aid of capacitors.

Some embodiments of the invention are shown in the accompanying drawings brought.

The strips U ₁ a. ₂ a _s (Fig. 1) are arranged perpendicular to the plane of the drawing on a parabola; each of the strips is connected to the focal point of the parabola by a straight conductor. If the whole thing is discharged from the focal point f by sparks there, the discharge pulse along the connecting wires will be Ja ₁ fa. ₂ .... reproduce and cause the individual stripes to oscillate in different phases. The energy will then be emitted to a greater extent by the individual strips in a certain direction.

Another embodiment of the invention is shown in FIG. 2. α _τ a. ₂ a _s denote in a suitable manner, e.g. B. on the surface of a cylinder arranged resonators, each of which is connected to a special, tuned to the same frequency oscillation circuit _{^ 1} ^ _{2 .....} On the other hand, these oscillation circuits are connected to the main oscillation circuit or excitation circuit c common to all resonators by means of wires of different lengths. By suitably dimensioning the connecting wires between the excitation circuit and the individual oscillation circuits O ₁ b ₂ . . . . it can then be achieved that the resonators vibrate in the phase difference required for the mirror effect, ie that the waves emanating from the strips, for example with reference to FIG. 1, in a plane JP ₁ n> perpendicular to the axis of the parabola. ₂ .... arrive in phase again, ie W ₁ n>. ₂ .... is a wave plane. In this way the same thing is achieved as with the well-known Hertzian mirror, with the difference, however,

Claims (3)

that the energy of the waves can be made much larger, since it depends on the total energy caused by the charges of the individual strips.
An embodiment of the invention with inductive excitation is shown in Fig. 3. The individual air conductors are each mediated by a transformer with the parallel branches of a vibration circle d connected. With this arrangement, too, the required phase difference between the individual air conductors can be achieved by including suitable, appropriately balanced means in the individual coil branches of the oscillation circuit can be achieved. As such a means of induction of phase shifts, as tests in this regard have shown, primarily ohmic resistance comes into consideration. The same can be inserted into the oscillation circles alone or in connection at the same time with capacitance and also with self-induction. In the circuit according to Fig. 2, the individual air conductors vibrate in a quarter wave, while, according to the arrangement in FIG. 3, they oscillate in half a wave. Of course can bezw the lower air conductor in the circuit of FIG. the lower halves of the air conductors when switching Fig. 3 are omitted and the earth step in its place. By means of earthed, good or moderately good conductors attached to the side of the transmitter mirror (Experience has shown that, for example, people posted there are sufficient) Scattering of the transmitter mirror can be eliminated. How the vibrations are excited, whether directly through connection or indirectly by induction, is indifferent to the basic idea. This consists in that one those patches of surface which, according to the H uy gh en see principle, are independent Radiation sources are treated directly as such, but with an appropriate one Phase shift establishes. In the case of electrical vibrations, this is possible and because of useful for the increased energy output. With a corresponding modification, the arrangement can also be used for the receiver. The mirrors are mainly for waves of the now common ones in spark telegraphy Length (order of magnitude 100 m) and dimensioned accordingly. Godfather ν τ-An Proverbs: ι. Connected to a concave mirror composed of individual conductors Transmitter and receiver for wireless telegraphic characterized in that the individual oscillation paths of the Mirror not by air waves, but directly by a metallic connection, possibly with the interposition of Capacitors or indirectly using transformers in the appropriate Phase are excited. 2. An embodiment of the encoder according to claim 1, characterized in that that the scattering of the transmitter mirror is prevented by side-mounted, earthed, good or moderately good conductors. 1 sheet of drawings.