DE1051914B - Energy output line for a discharge tube for ultra high frequency or super high frequency oscillations - Google Patents

Description

GERMAN

The invention relates to the energy output line of an electrical discharge tube for Ultra high frequency or super high frequency vibrations (decimeter or centimeter waves), their Resonator system is formed by a Lecher line system consisting of two flat conductors, the placed within a conductive shield in the form of a rectangular sleeve and at one end is connected to this. The ladder and the socket are the same length, an odd multiple a quarter of the operating wavelength. The tube has an energy output line that is capacitive is coupled to the Lecher line system.

In the known capacitively coupled energy output lines for tubes of the type mentioned above Art the energy output line is formed by a Lecher system of two flat conductors, which are so in alignment with the conductors arranged inside the socket that only a small one Space between the end faces of the two Lecher systems is open.

A disadvantage of open Lechersystems as an energy output line is that their coupling with some devices and antennas is not easy. In addition, the inevitable radiation is frequent a disadvantage.

The aim of the invention is to provide an energy output line for tubes of the type mentioned, which does not have the disadvantages mentioned or at least to a considerably lesser extent.

The present invention relates to the formation of the power output line for an electric discharge tube for ultra high frequency or super high frequency vibrations. The tube contains in on As is known, a resonator system is made up of a Lecher line system consisting of two flat conductors is formed inside a conductive shield in the shape of a rectangular Bushing is arranged and connected at one end to this, with the conductor and the bushing equal- namely an odd multiple of a quarter of the operating wavelength and the power output line is capacitively coupled to the Lecher line system. In a manner known per se, the Implementation of the output line through the vacuum vessel from several arranged parallel to one another wire-shaped ladders.

According to the invention, six wire-shaped conductors are arranged regularly distributed over a circular cylinder and terminate at a short distance from the resonator system. Four of these conductors make close to an extension of the edges of the two flat conductors, and the other two conductors are in the Planes perpendicular to the flat ladders

Energy output line
for a discharge tube
for ultra high frequency or
Sup high frequency vibrations

Applicant:
NV Philips' Gloeilampenfabrieken,
Eindhoven (Netherlands)

Representative: Dr. rer. nat. P. Roßbach, patent attorney,
Hamburg 1, Mönckebergstr. 7th

Claimed priority:
Netherlands 16 May 1956

Frederik Coeterier, Eindhoven (Netherlands),
has been named as the inventor

extend through their center lines. The flat conductors are flush with the parallel walls of the socket, where the conductors are a quarter wavelength long and then into the outer conductor of a system of coaxial conductors pass over, the inner conductor of which extends almost to the free end of the wire-shaped conductor and with three of these conductors, which are arranged symmetrically to him, is conductively connected.

In the discharge tubes with the described resonator system, the flat conductors vibrate in antiphase, the shielding sleeve as a whole being neutral. The ones near the flat ladder Walls of the can, however, oscillate somewhat, with a lower amplitude and with a phase that is opposite to that of the nearest flat conductor. The phase of the side wall of the Bushing and the most distant flat conductor is thus the same, and for this reason can the wire-shaped conductor, which is capacitively coupled to the side wall, conductively with the wire-shaped Conductors are connected that are capacitively coupled to the farthest flat conductor. The design according to the invention now results in a coaxial decoupling line that does not have any radiation losses has and can be easily adapted to different devices.

«08 768Ή52

Claims (1)

The invention is explained in more detail below with reference to the drawing in which FIGS. 1 and 2 a cut or a cut in a plane guided along a plane containing the axis represent perpendicular to the axis of a corresponding discharge tube. In the figures, 1 denotes the glass bulb wall. Several pins 2 are attached as electrode leads in the base 3 of the piston 1. On a plate 4 , a type of bushing with wide side walls 5 and narrow side walls 6 is built up. Two metal strips 7 are arranged parallel to the wide side walls 5 inside the bushing. Outside the sleeve, a cathode 8 with a focusing electrode 9 and on the other side of the sleeve a pierced brake electrode 10 and a non-pierced brake electrode 11 are arranged on one side of the sleeve. Between the opening in the focusing electrode 9 and the opening in the braking electrode 10 there are aligned openings in the walls 5 of the bushing and the strips 7. During operation of the tube, there is a relatively low voltage on the focusing electrode 9 compared to the hot cathode 8, while on the bushing with the strips 7 is a positive voltage of about 2500 V with respect to the cathode. The first braking electrode 10 has approximately cathode potential, and the second braking electrode 11 has a negative voltage of a few hundred volts with respect to the cathode. Six wire-shaped conductors 13 are passed through the upper side 12 of the piston 1 and end at a short distance from the upper end face of the sleeve and the strip. Outside the tube, these conductors merge into a conductive cylinder 14 which, together with an inner conductor 15, forms a coaxial line. The conductor 15 extends almost to the end of the conductor 13 and is conductively connected to these conductors by means of the strips 16. Claim: Energy output line for a discharge tube for ultra high frequency or super high frequency oscillations, whose resonator system is formed by a Lecher line system consisting of two flat conductors, the inside a conductive shield arranged in the form of a rectangular sleeve and at one end with ίο this is connected, the head and the socket being the same, namely an odd multiple of a quarter of the operating wavelength and the energy output line is capacitively coupled to the Lecher line system, characterized in that the implementation of the output line through the vacuum vessel in a manner known per se consists of several parallel wire-shaped conductors, that six conductors are regularly distributed over a circular cylinder and end at a short distance from the resonator system, four of these conductors almost form the extension of the edges of the two flat conductors and the other two in the central solder planes of the Flat conductors are in alignment with the walls of the socket that are parallel to these flat conductors, the conductors being a quarter wavelength long and then merging into the outer conductor of a coaxial conductor system, the inner conductor of which extends almost to the free end of the wire-shaped conductor and is conductively connected to three of these conductors, which are symmetrical to it. Considered publications: German Patent Nos. 867 705, 931 600;
German patent application L 4843 VIII a / 21 a ⁴ ; 9/01 (published January 8, 1953). 1 sheet of drawings © m 768/352 2.59