SU1392606A1 - Device for coupling electric waveguide with concentrated load - Google Patents

Abstract

This invention relates to a microwave technique. The purpose of the invention is to reduce losses. The device contains a segment of 1 Diel. the waveguide, one side of which is covered with a layer 2 of metallization, in which rum is made slit 3. The slit 3 has the shape of a zigzag, the axis of which is located in the plane of the longitudinal symmetry of the segment I. The period L of the zigzag is A

Description

but

This invention relates to a microwave technique and can be removed at. building devices on dielectric waveguides.

The aim of the invention is to reduce losses.

The drawing schematically shows a coupling device of a dielectric waveguide with a concentrated load.

A coupling device with a concentrated load contains a segment I of a dielectric waveguide, one side of which is covered with a metallization layer 2, in which slot 3 is made. Slot 3 has a zigzag shape, whose axis is located in the plane of longitudinal symmetry of segment 1 of a dielectric waveguide, period L zigzag equals

l

 LU

W,

and.

where is ti

- wavelength in free space;

L is the length of the gap within the period;

UgiUj. - slowing factors for the phase velocity of the wave in the dielectric waveguide and in the slot, respectively. The concentrated load 4 is connected to the edges of the slit 3 at the end 5 of segment 1 of the dielectric waveguide, which is its input.

The coupling device of a dielectric waveguide with a concentrated load operates as follows.

The microwave signal arriving at the input of segment 1 of the dielectric waveguide excites the slit 3 at points located near the L of the zigzag, since at these points the gap 3 of the longitudinal currents flowing in

0

50

five

layer 2 metallization. When the condition specified for the slot period is fulfilled, the partial waves excited in the slot are folded in phase in the direction of the entrance of segment 1 of the dielectric waveguide. When choosing a sufficient number of zigzags of the slit 3, conditions are created for the full transfer of the microwave signal arriving at the end 5 of segment 1 of the dielectric waveguide into a concentrated load 4.

Claims (1)

Invention Formula The communication device of a dielectric waveguide with a concentrated load, containing a segment of a dielectric waveguide, one side of which is covered with a metallization layer, in which a slot is made, the edges of which serve to connect a concentrated load, differing in that, in order to reduce losses, the gap has the shape of the zigzag whose axis is located in the plane of the longitudinal symmetry of the dielectric waveguide segment, the period A of the zigzag is equal to l where is the wavelength in the free space; L is the length of the gap within the period;  Je Ui are the deceleration coefficients of the phase velocity of the wave in the dielectric waveguide and in the slot, respectively, and the end of the dielectric waveguide, on the side of which the concentrated load is connected, is its input.