SU1277257A1 - Harmonic filter - Google Patents

Abstract

The invention relates to microwave technology and m. Used in high-power transmission devices. The purpose of the invention is to reduce losses. The filter contains a splitter 1, one of the arms to-rogo. Connected by a smooth transition 2 with segment 3 of the outlying waveguide, to which the absorber load is connected 4. The size of the wide wall of transition 2 at its connection to segment 3 is 0.52-0 , 56 wavelengths in free space at the lower operating frequency. 1 il.

Description

37

figure 1

iNd

v4

N9 SP 11 The invention relates to microwave technology and can be used in high-power transmission devices. The aim of the invention is to reduce losses. FIG. 1 shows a harmonic filter, a cut; in fig. 2 - the same, in a different projection. . The harmonic filter contains a splitter 1, one of the arms of which is connected by a smooth transition 2 to segment 3 of an outlying waveguide, to which an absorbing load 4 is connected. The size of the wide wall of the peave transition 2 in its connection to segment 3 of the outlying waveguide is 0.52-0, 56 wavelengths in free space at the lower operating frequency. The harmonic filter works as follows. The microwave power at the operating frequency enters the splitter 1. The shoulder of the splitter 1, to which segment 3 of the limiting waveguide is connected, does not receive power, but reflects from the plane of its connection. Microwave power at harmonic frequencies, on the contrary, enters segment 3 beyond the 7th limiting waveguide and is dissipated in the absorbing load 4. The choice of the size of the wide wall of the smooth transition 2 connected between the shoulder of the splitter 1 and the segment 3 of the transient waveguide within 0.52 - 0.56 wavelength provides good matching at frequencies ha rmonik, as well as reducing the loss of the main signal due to the presence of a step in the plane of connection of segment 3 of the ultimate waveguide. The formula of the invention A harmonic filter containing a splitter, one of the arms of which is connected by a smooth transition to a segment of an outlying waveguide, to which an absorbing load is connected, characterized in that, in order to reduce losses, the size of a wide wall of a smooth transition in its connection to a segment of an outbound waveguide equal to 0.52-0.56 wavelength in free space at the lower operating frequency.

Claims (1)

Claim A harmonic filter containing a splitter, one of the arms of which is connected by a smooth transition with a segment of the transcendental waveguide to which an absorbing load is connected, characterized in that, in order to reduce losses, the size of the wide wall of the smooth transition ²³ and at the point of its connection to the segment of the transcendental waveguide is 0.52-0.56 wavelengths in free space at the lower operating frequency. 0 = ZZZZZZ ^ (jSSSSSSSSXS FIG. 2