PL157285B1 - Connection between coaxial transmission line and overhead symmetric transmission line - Google Patents

Abstract

Conversion from the coaxial line to symmetric shielded suspended substrate stripline, containing connection of the suspended stripline and coaxial line casings and connection of both triangular endings divided by dielectric carrier, internal lead of the symmetric shielded suspended substrate stripline with the internal lead of the coaxial line; it is characterised in that casing of the coaxial line (1) is connected with the casing of symmetric shielded suspended substrate stripline, while the internal lead of the coaxial line (3) is connected to the triangular ending of the internal lead of the symmetric shielded suspended substrate stripline (2), while both conducting surfaces of the symmetric shielded suspended substrate stripline internal lead are coupled along the edge of the triangular lead ending.<IMAGE>

Description

The object of the invention is the transition from a coaxial line to a symmetrical suspended line.

The hitherto known transitions from the coaxial line to the two-plane suspension line have a direct connection between the suspended stripline housing and the coaxial line and the connection of both triangular-ended planes, separated by a dielectric carrier, of the inner conductor of the symmetrical suspension line with the inner conductor of the coaxial line. The dielectric carrier of the inner conductor of the symmetrical suspension line is brought to the boundaries of the housing of the symmetrical suspension line and comes to the input plane of the coaxial line.

The known transition is characterized by the power strength significantly lower than the power strength of the connected coaxial line and symmetrical suspended line. It is caused by the surface breakthrough of a symmetrical suspended line between the sharp edges of the triangular end of both planes of the symmetrical suspended line and the line of penetration of the suspended line body with the outer conductor housing of the coaxial line.

The transition from a coaxial line to a symmetrical suspension line according to the invention has a body of the coaxial line connected to the body of the symmetrical suspension line, and the inner conductor of the coaxial line is connected to the triangularly terminated inner conductor of the symmetrical suspension line. Both conductive planes of the inner conductor of the symmetrical suspended line are short-circuited along the edge of the triangular end of the conductor.

The coaxial line arrangement according to the invention allows the use of a symmetrical suspension line at higher power levels.

The invention is explained in more detail in the drawing in which Fig. 1 is a longitudinal section of the passage, and Fig. 2 is a cross section thereof.

The transition from the coaxial line to the two-plane symmetrical suspended line consists of the body 1 constituting the housing of the symmetrical suspended line and the coaxial line, and connected both planes of the inner conductor of the symmetrical suspension line 2, the inner conductor of the coaxial line 3 and the inner conductor of the symmetrical suspended line 4. End of the conductive planes of the inner conductor of the symmetrical suspension line 2 is shaped in the form of a triangle to enable connection of the inner conductors of the coaxial line and the symmetrical suspension line with significantly different dimensions.

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The dielectric carrier of the inner conductor of the symmetrical suspension line 4 is removed along the line embracing the triangular end of the conductive planes of the inner conductor and its extension and the body of both lines near the triangular end of the inner conductor of the suspension line. Both conductive planes of the inner conductor of the symmetrical suspension line 2 are compact along the edge of its triangular end. In this way, a threefold increase in the power strength of the transition was achieved.

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Department of Publishing of the UP RP. Circulation of 90 copies

Price PLN 5,000.

Claims (1)

Patent claim Transition from a coaxial line to a symmetrical suspension line containing the connection of the suspended stripline casing and the coaxial line and the connection of both triangular-ended planes separated by a dielectric carrier, the inner conductor of the symmetrical suspension line with the inner conductor of the coaxial line, characterized in that the body of the coaxial line (1) is connected with the body of the symmetrical suspension line, and the inner conductor of the coaxial line (3) is connected to the triangularly terminated inner conductor of the symmetrical suspension line (2), both conducting planes of the inner conductor of the symmetrical suspension line are short-circuited along the edge of the triangular end of the conductor.