SU1309125A1 - Microstrip filter - Google Patents

Abstract

The invention of m. Is used in frequency-selective chains of miniature paths and devices. The purpose of the invention is to reduce the dimensions while maintaining high attenuation in the barrier band. The microwave signal at the Middle frequency passes through the strip V-shaped conductors (PP) 2, and outside the passband is reflected. It is due to their mutual position. Reducing the dimensions while maintaining a large attenuation in the obstacle band is achieved by making PP 2 quarter-wave, ITO allows the transverse dimension to be no more than 1/8 of the wavelength. The combination of two types of communication (for medium PP 2 open branches (PB) 3, and for the remaining neighboring PP 2 closed and PB C) ensures the high attenuation in the barrier band, i.e. allows you to maintain the desired nature and magnitude of the connection at relatively small distances between PP 2. 1 Il. S SL 1

Description

/

R

/ III

h 5

/ / H 5

11309125

This invention relates to an RFE technique and can be used in frequency-selective circuits of miniature paths and devices.

The aim of the invention is to reduce the size with high attenuation in the barrier line.

The drawing shows the microstrip filter design.

Microstrip filter contains

to

in m

a dielectric substrate 1, on one side of which a grounding base is placed (not shown), and on the other side are stripe V-shaped conductors 2 of quarter-wavelength, the branches 3 adjacent of which are electromagnetically connected to each other, and the ends 4 and 5 are oriented one way. In this case, one of the branches 3 of each strip V-shaped conductor 2 is open (at the end 4), and the other is closed (at the end 5). The two middle strip V-shaped conductors 2 are electromagnetically connected by the open branches 3, and on the other strip-shaped V-shaped conductors 2 are the closed and open branches 3.

Microstrip filter works as follows.

The microwave signal at the center frequency passes through the strip V-shaped conductors 2, and outside the bandwidth is reflected due to their mutual arrangement.

Reducing the dimensions while maintaining a large attenuation in the obstacle band is achieved by performing strip V-shaped pro

Compiled by V.Alybin Editor N. Lazarenko Tekhred L.Oleinik Proofreader G. Reshetnik

Zak 1801/46 Circulation 626 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

2 quarter-wavelength waves, which allows for a transverse dimension of no more than 1/8 of the wavelength. The combination of two types of communication (for medium strip V-shaped conductors 2, open branches 3, and for the remaining adjacent strip V-shaped conductors 2 closed and open branches 3, ensures high attenuation in the obstacle strip, i.e. allowing It preserves the required character and magnitudes at relatively small distances between adjacent strip V-shaped conductors 2.

Claims (1)

Invention Formula 20 25 A microstrip filter containing a dielectric substrate, on one side of which a grounding base is placed, and on the other side - stripe V-shaped conductors, the branches of the neighboring of which are electromagnetically connected to one another, and their ends are oriented in one direction, and one of the branches each strip V-shaped conductor is open, so that it is, in order to reduce its size, the strip V-shaped conductors are made of a quarter-wavelength, the other branch of each of them is closed and V-shaped strip conductors are coupled electromagnetically-open branch, and the remaining V-shaped strip conductors - closed and open branches. 40 thirty