RU2707244C1 - Ultra-wideband stripline power divider - Google Patents

Abstract

FIELD: measuring equipment.

SUBSTANCE: device housing has one input and two output coaxial connectors. In the base and cover of the body there are through threaded holes for tuning screws. Dielectric plate fixed in slots of pins connected to collet sockets of the first sections of central conductors, which are connected to the second sections of central conductors, is suspended in the passage chamber having the shape of a rectangular parallelepiped with two rounded angles. Second sections of central conductors are pressed into large dielectric supports pressed into rings. On both sides of the dielectric plate there is a topological pattern comprising an input and two output supply lines, between each pair of input-output supply lines resistors are connected, and output supplying lines are made with chamfers-transformers.

EFFECT: technical result when implementing proposed solution is expansion of working frequencies range towards microwave frequency.

1 cl, 6 dwg, 1 tbl

Description

Field of application

The invention relates to the field of measurement technology and can be used in radar, radio navigation, communication, antenna-feeder and measuring systems for dividing the power of a microwave signal.

State of the art

A known power divider (patent RU No. 2492559 publ. 11/29/2011), which consists of a triangular shape with rounded corners, three coaxial flange connectors spaced 120 ° apart from each other, two covers forming a passage chamber inside the housing, in which it is suspended a dielectric plate with a topological pattern of a resistive power divider on it based on a triangular circuit, the central conductors of the coaxial channels are connected to the plate through coaxial microstrip junctions.

The closest analogue is a power divider (patent RU No. 2412507 publ. 02/01/2011), which is a rectangular case, in the ends of which three coaxial flange connectors are fixed, two of which (outputs) are located coaxially on opposite ends of the case, and the third (input) is perpendicular axis of exits. Inside the case there is a passage chamber, top and bottom limited by covers; in the cavity there is a dielectric plate with a topological pattern printed on it containing two resistors; the central conductors of the coaxial channels are connected to the plate through coaxial microstrip transitions.

The disadvantages of the devices are the relatively low range of operating frequencies and a high level of return and transmission losses.

SUMMARY OF THE INVENTION

The technical result of the proposed solution is to expand the range of operating frequencies in the direction of the microwave.

The technical result is achieved in that in an ultrawideband strip power splitter comprising a housing with one input and two output coaxial connectors, mounted on three outer side surfaces of the housing, in which a passage chamber is formed with a dielectric plate suspended from it with a topological pattern applied to it, and stepped cylindrical holes are made, two of which are aligned and the third perpendicular to them, according to the proposed solution, the housing is formed by with screw base and cover, on the mating surfaces of the base and cover there are three stepwise changing depressions of a semicylindrical shape, forming stepped cylindrical holes, and recesses in the form of rectangular parallelepipeds with two rounded corners, forming a passage chamber, a topological drawing is applied on both sides of the dielectric plate, containing input and two output supply lines, and resistors are connected between each pair of input-output supply lines, and output the other supply lines are made with transformer bevels, while the dielectric plate is fixed in the grooves cut in the flat ends of the pins pressed into small dielectric supports, and the rounded ends of the pins are connected to the collet sockets of the first segments of the central conductors, connected by thread to the second segments of the central conductors pressed into large dielectric supports, pressed into rings that are sandwiched between the bushings and the flange bushings, are made in the base and cover oznye threaded holes for the tuning screws.

Brief Description of the Drawings

In FIG. 1 shows the appearance of an ultra-wideband power strip splitter; FIG. 2 is a side view; FIG. 3 shows a longitudinal section of the device AA, in FIG. 4 shows a view B, FIG. 5 is a longitudinal section of a BB device. In FIG. 6 shows a topological drawing on a dielectric plate.

The implementation of the invention

Figure 1 - 5 indicated:

1 - base;

2 - cover;

3 - tuning screw;

4 - screw;

5 - camera through passage;

6 - a cylindrical hole;

7 - dielectric plate;

8 - pin;

9 - small dielectric support;

10 - collet nest;

11 - the first segment of the Central conductor;

12 - the second segment of the Central conductor;

13 - a large dielectric support;

14 - rings;

15 - sleeve;

16 - flange sleeve;

17 - screw;

18 - coaxial connector;

19 - resistor;

20 - input supply line;

21 - output supply line;

22 - bevel transformer.

The ultrawideband stripe power splitter is a housing consisting of a base 1 and a cover 2, which are connected by screws 4. The tuning screws 3 are screwed into through threaded holes made in the base 1 and cover 2 perpendicular to their bases. On the mating surfaces of the base 1 and the cover 2, recesses are made in the form of rectangular parallelepipeds with rounded corners, forming a passage chamber 5, and three stepwise-changing recesses of a semicylindrical shape, forming three step cylindrical holes 6, two of which are aligned and the third perpendicular to them. In the passage chamber 5, a dielectric plate 7 is suspended, which is fixed by soldering in the grooves of the pins 8. Each pin 8 is pressed into a small dielectric support 9, which is pressed in diameter by the semicylindrical surfaces of the base 1 and the cover 2. Some of the inner surfaces of the cylindrical holes 6 act as external conductors of coaxial channels, which begin with coaxial-strip junctions formed by a dielectric plate 7 with a resistor deposited on it on both sides 19, the input 20 and output 21 feeders. Moreover, the output supply lines 21 are made with bevel transformers 22, necessary for matching the resistors 19 with the output supply lines 21, as well as to ensure electrical isolation between the outputs at frequencies above 30 GHz. Schematically, the topological drawings on both sides of the plate represent one input 20 and two output 21 supply lines, and resistors 19 with a nominal resistance of 100 Ohms are connected between each pair of input-output supply lines (Fig. 6). The rounded ends of the pins 8 are connected to the collet sockets 10 of the first segments 11 of the Central conductors, which are threadedly connected to the second segments 12 of the Central conductors. The second segments 12 of the Central conductors are pressed into large dielectric supports 13, which in turn are pressed into rings 14, from the ends of the rings 14 are clamped between the bushings 15, partially penetrating into the holes of the housing and resting against the ends in the steps of the cylindrical holes 6, and flange bushings 16. Flange the sleeves 16 are pressed against the housing by screws 17. The flange sleeves 16 having a thread and a supporting plane together with collet sockets 10 of the second segments 12 of the central conductors form coaxial connectors 18 of the socket type. The first and second segments 11 and 12 of the central conductors are formed by the cylindrical surfaces of the rods in which brush (collet) nests are made on one end, which are blind holes with perpendicular longitudinal slots, and on the other end are threaded ends (second segments) or blind threaded holes (first segments). With socket ends, the first segments of the 11 central conductors are mounted on the rounded ends of the pins 8, forming a sliding detachable connection, and threaded - are screwed onto the threaded shanks of the second segments of the 12 central conductors.

The inventive ultra-wideband strip power splitter provides an operating frequency range from 0 to 50 GHz.

The table shows the characteristics of the closest analogue and the claimed ultra-wide strip power strip splitter.

Table

Electrical characteristic Prototype
(calculated values) The inventive device
(measured values) Range of working frequencies, GHz 0-20 0-50 VSWR input from 1.0 to 1.12 no more than 1.3 VSWR outputs from 1.67 to 1.97 no more than 1,7 Input-output transfer coefficient, dB no more minus 6.0
no less minus -6.8 no more minus 5.8
not less minus 6.5 Output-output transfer coefficient, dB no more than minus 10.8
no more minus 12.0 no more minus 12.0
no more minus 15.0 The difference in the amplitudes of the input-output transfer coefficient, dB - no more than 0.3 The difference in the phase component of the input-output transfer coefficient, deg. - no more than 5

The proposed solution allows to reduce the return and transmission losses of an ultra-wideband strip power splitter. In addition, the invention provides mechanical isolation between the dielectric plate and coaxial connectors.

Claims (2)

An ultrawideband strip power splitter comprising a housing with one input and two output coaxial connectors mounted on three outer side surfaces of the housing, in which a passage chamber is formed with a dielectric plate suspended in it with a topological pattern deposited on it, and stepwise cylindrical holes are made, two of which which are located coaxially, and the third perpendicular to them, characterized in that the housing is formed by connected screws base and cover on mating on the surfaces of the base and the cover there are three stepwise-changing depressions of a semicylindrical shape, forming stepped cylindrical holes, and depressions in the form of rectangular parallelepipeds with two rounded corners, forming a passage chamber, on both sides of the dielectric plate there is a topological drawing containing an input and two output supply lines, moreover, between each pair of input-output supply lines connected resistors, and the output supply lines are made with bevels-transformation tori, while the dielectric plate is fixed in the grooves cut in the flat ends of the pins, pressed into small dielectric supports, and the rounded ends of the pins are connected to the collet sockets of the first segments of the Central conductors connected by thread to the second segments of the Central conductors, pressed into large dielectric supports , pressed into rings that are sandwiched between the bushings and the flange bushings, through threaded holes for tuning screws are made in the base and the cover.

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