SU1319119A1 - Microstrip directional coupler - Google Patents

Abstract

The invention relates to radio engineering and provides an increase in communication. The microstrip directional coupler is a diel. substrate 1, on one side of which a metallized base is applied, and on the other side - two segments of connected lines (OSL) 1/8 wavelength in length, connected in cascade and bent in different directions. Conductors 3, 4 and 5, 6 respectively. The OSLs are made in the form of a two-way spiral and are connected by jumpers 7 to the 8–1 G segments of supply lines. The segments 8, 9 and the conductors 3, 5 connected between them form the primary line, and the segments 10, 11 and the conductors 4, 6 form the secondary one. Part of the high-frequency power extending from segment 8 to segment 9 along the primary line branches into the secondary line and stands out in segment 10. The bending of conductors 3-6 in different directions leads to an increase in directivity. The level of communication determines the width of the conductors 3-6 and the size of the gap between them. By making the OSL conductors in the form of a two-way helix, the coefficients further increase. power transmission from the primary to the secondary. 2 Il. i (L with with

Description

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The invention relates to radio engineering, namely to power distribution devices between two transmission lines.

The aim of the invention is to increase communication.

Figure 1 shows a microstrip directional coupler, viewed from the side of the conductors of connected lines; figure 2 - section aa in figure 1 „

The microstrip directional coupler contains a dielectric substrate 1, on one surface of which a metallized base 2 is deposited, and on the other surface there are conductors

3 and 4 of the first and conductors 5 and 6 of the second segments of the connected lines, the length of 1/8 of the wavelength, connected in cascade and curved in different directions. The conductors 3, 4 and 5, 6 of each segment of the connected lines are extended in the form of a two-way spiral and are connected by conductive spans 7 to the segments 8-11 of the supply lines.

Microstrip directional coupler works as follows.

Segments 8 and 9 and the interconnected conductors of the 3 and 5 segments of the connected lines, which are included between them, form the primary line, and the segments 10 and 11 and the conductors

4 and 6 - the secondary line of the microstrip directional communication area from 92

The branch line, high-frequency power, is supplied to segment 8, spreads along the primary line and enters segment 9. Part of this power, due to electromagnetic coupling, responds to the secondary line, found in section 10 "Bend of conductors 3, 4 and 5, 6 in different directions helps to equalize the phase velocities with even and odd types of excitation, leads to an increase in directivity. The level of communication is determined by the width of the conductors 3-6 and the size of the gap between them. A further increase in the power transfer ratio from the primary to the secondary line is achieved due to the additional connection between adjacent turns of the two-way helix.

Claims (1)

Invention Formula A microstrip directional coupler containing a dielectric substrate, on one surface of which a metallized base is applied, and on the other - conductors of the first and second segments of connected lines, equal to 1/8 of the wavelength, connected in cascade and different directions. so that, in order to increase the connection, the conductors of each segment of the connected lines are made in the form of a two - way spiral. Compiled by A. Malovichko Editor O. Golovach Tehred N. Glushchenko Proofreader M. Demchik Order 2519/48 Circulation 625 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, F-33, Rauschska nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Phage. 2