SU1471236A1 - Microstrip filter - Google Patents

Abstract

This invention relates to a microwave technique. The purpose of the invention is to increase the selectivity. The filter contains a dielectric substrate 1 with holes 7, a grounding base 2, strip conductors (PP) 3, 4 and 5 with external edges and an output line. The microwave signal is applied to PP 5, which is the inner ring, and transmitted to PP 3, which is the outer ring, and then to the output line. The transmission of the microwave signal in the passband is due to the fact that the concentric PPs 3, 4 and 5 are resonators on the radial line segments. The electrical length of each of the PP 3, 4 and 5 can be adjusted and be the same due to the inductance formed by connecting the outer edges of the PP 3, 4 and 5 on the part of the circumference with the grounding base 2 through the holes 7. The goal is achieved due to the high quality of the resonators formed PP 3, 4 and 5. 2 Il.

Description

0112.1

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The invention relates to a microwave technique and can be used in miniature frequency selective devices.

The aim of the invention is to increase the selectivity.

FIG. 1 shows the microstrip filter design; on fit.2-vnd A in FIG. one.

The microstrip filter contains a dielectric substrate 1, on one side of which a zazen-implanting base 2 is placed, and on the other side are strip conductors 3-5, made in j-shaped rings arranged centrally, with the outer edge 6 of at least one ring (3-5) is connected on a part of a circle to the grounding base 2 through aperture 7, jg made in the dielectric substrate 1. The first and last conductors 3 and 5 (which are respectively the outer and inner rings) are connected respectively to the input line (not shown jj ) and output line 8.

14712362

The glossy conductors 3-5 are resonators on radial line segments, the electrical length of each of the stripline conductors 3-5 can be adjusted and made the same by the inductances formed by connecting the outer edges 6 of the striping conductors 3-5 (or Some of them are) with a grounding base 2 through the hole 7, filled in the dielectric substrate 1.

The increase in selectivity is achieved due to the fact that the quality factor of the resonators formed by the strip conductors 3-5 is high.

Claims (1)

Invention Formula A microstrip containing dielectric substrate, on one side of which a grounding base is placed, and on the other side are strip conductors, the first and last of which are connected to the input and output lines, respectively, characterized in that, to increase the selectivity, the strip conductors are smoked in the form of rings arranged concentrically, with the outer edge of at least one ring on a part of the circumference connected to the grounding base through an aperture additionally formed in the dielectric l llozhke. Microstrip filter works as follows. The microwave signal is supplied, for example, to the conductor 5, which is the inner ring, and is transmitted to the conductor 3, which is the outer ring, and then to the output line 8. The transmission of the microwave signal in the bandwidth is due to the fact that Invention Formula A microstrip containing dielectric substrate, on one side of which a grounding base is placed, and on the other side are strip conductors, the first and last of which are connected to the input and output lines, respectively, characterized in that, to increase the selectivity, the strip conductors are smoked in the form of rings arranged concentrically, with the outer edge of at least one ring on a part of the circumference connected to the grounding base through an aperture additionally formed in the dielectric l llozhke. Type A