RU188349U1 - SUPERWIDEBAND TRANSITION - Google Patents

Abstract

The utility model relates to the field of microwave technology. In particular, the transition can be used in the design of attenuators, loads, dividers. The ultrawideband transition also consists of an asymmetric suspended microstrip line and a pin made in the form of a cone-shaped cylinder with a stepwise varying diameter. A through landing groove is made symmetrically and perpendicular to the axis of the cylinder to secure the asymmetric suspended microstrip line, while the length of one side surface of the landing groove from the bottom is more than twice the length of its other side surface. Technical result - expansion of the arsenal of technical equipment and increase in working frequency range towards the microwave. 3 ill.

Description

The utility model relates to the technical field of the microwave range and can be used to transfer electromagnetic waves from a coaxial channel of circular cross section to an asymmetric suspended microstrip line. In particular, the transition can be used in the design of attenuators, loads, dividers.

Known coaxial attenuator (patent RU 2014675 publ. 06/15/1994), which contains two segments of a coaxial line connected by a line segment with losses formed by a metal sleeve and a thin film resistive line on a dielectric substrate, fixed by housing contacts in the longitudinal slots of the metal sleeve, and central contacts - in the grooves made at the ends of the inner conductors of the segments of coaxial lines. Holes are made in the dielectric substrate of the thin-film resistive line at least on one side of the central contacts at the junction of them with the ends of the inner conductors of the coaxial line segments.

The disadvantage of this device is the relatively small range of operating frequencies, a high level of return and transient losses.

Closest to the claimed utility model is a coaxial attenuator (US patent No. 7839238 publ. 11/23/2010), which is a cartridge made in the form of a cylindrical sleeve, with a coaxial through cylindrical cavity, in the walls of which there are longitudinal grooves of a rectangular shape. In the grooves, coaxially with the sleeve, a dielectric plate is fixed (suspended) with a topological drawing of an asymmetric microstrip line and absorbing sections applied on it. At the end edges of the plate, pins (pins) are soldered to the microstrip line.

The disadvantage of this device is the unreliable fastening of the central conductor of the coaxial line to an asymmetric suspended microstrip line.

This utility model solves the problem of creating a reliable connection with mechanical isolation between the central conductor of the coaxial channel and the asymmetric suspended microstrip line. In this case, the technical result is aimed at expanding the arsenal of technical means and increasing their operating frequency range in the direction of the microwave.

To solve the problem and achieve the technical result, this utility model includes an asymmetric suspended microstrip line and a pin.

A feature of this utility model is that the pin in the ultra-wideband junction is made in the form of a cone-shaped cylinder with a stepwise changing diameter, and a through landing groove is made symmetrically and perpendicular to its axis to secure the asymmetric suspended microstrip line. Moreover, the length of one side surface of the landing groove from the bottom of the landing groove is more than two times the length of the other side surface of the landing groove.

Brief Description of the Drawings

In FIG. 1 is a sectional view of an ultra-wideband junction; FIG. 2 shows a rear view of the pin and in FIG. 3 shows a central sectional view of the attenuator coaxial path in section.

Utility Model Implementation

An ultra-wideband junction consists of pin 1 and an asymmetric suspended microstrip line 2. Pin 1 is made in the form of a cone-shaped cylinder with a stepwise varying diameter. At the base of the cylinder, a through landing groove 3 is symmetrically and perpendicular to its axis for securing the asymmetric suspended microstrip line 2.

Concrete example

An ultra-wideband junction for transmitting an electromagnetic wave from a coaxial circular channel into an asymmetric suspended microstrip line, for example in an attenuator (Fig. 3), is a sliding pin-to-pin type contact connection. The nest is made at the end of the central conductor 4 of the attenuator coaxial channel and represents a cavity coaxial to the conductor, in the walls of which there are longitudinal slots to the conductor, forming contact lugs 5 for connection with the contact surface of pin 6. The asymmetric suspended microstrip line 2 (Fig. 3) is fixed with rations in the landing groove of 3 pins 1.

Pin 1 performs the function of a matching transformer. The length of one side surface of the landing groove 2 of the pin 1 from the bottom is more than twice the length of its other side surface, which allows shifting the resonance in the transmission and reflection coefficients of the device from the operating frequency range.

A pair of ultra-wideband junctions provide an operating frequency range from 0 to 40 GHz and reflection is no worse than minus 20 dB.

The design of the claimed utility model has been successfully tested in production.

Claims (1)

An ultra-wideband transition containing an asymmetric suspended microstrip line and a pin, characterized in that the pin is made in the form of a cone-shaped cylinder with a stepwise varying diameter, and a through landing groove is symmetrically and perpendicular to the axis at the base of the cylinder to secure the asymmetric suspended microstrip side line, while surface of the landing groove from the bottom more than the length of its other lateral surface more than twice.

Images