SU1762353A1 - Microwave power divider - Google Patents

Abstract

Usage: signal division in microwave amplifiers and phased antenna arrays. SUMMARY OF THE INVENTION: The device comprises input and p output strip transmission lines located on a shielded magnetized ferrite substrate and electromagnetically connected by side edges of the strip conductors, the other side edges of these conductors are connected to the screen. In the ferrite substrate, holes are made at each of the output lines. In each hole, a rod of magnetic material is mounted for axial movement. 3 il.

Description

The invention relates to the field of radio engineering, in particular, to devices of the ultra-high frequency (microwave) range and can be used in phased antenna arrays (HEADLIGHTS) and microwave amplifiers.

Microwave power dividers are known that contain a stripline conductor of the primary line located on a shielded magnetized ferrite substrate, electrically connected along the end of the substrate to the shield and a stripline conductor of the primary line electrically connected along the end of the substrate to the screen and the stripline conductor of the output line electromagnetically connected by one side edge to strip conductor of the primary line.

The disadvantages of the prototype design are:

low efficiency due to absorption of a portion of the useful power in the ballast resistors;

uneven division of power depending on the frequency that occurs

because of the reflections from the discontinuities in

OUTPUT LINE

complexity of adjustment and adjustment due to the scatter of the magnetic parameters of the ferrite substrate and the magnetic system.

The aim of the invention is to increase the efficiency and reduce the unevenness of the power division, as well as simplify the setting and adjustment of parameters in the microwave power divider.

To this end, in a power divider containing a strip conductor of the primary line located on a shielded magnetized ferrite substrate electrically connected at the end of the substrate with a screen, and n strip conductors of output lines electrically connected by a single side edge to the strip conductor of the primary line, the other side edge of the strip the conductor of each of the output lines is connected to the shield by means of a conductive jumper located on the side wall

VI

Os

to have eaten

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hole, which is made in the ferrite substrate;

In addition, the axis of each hole in the ferrite substrate is mounted with the possibility of moving a rod of magnetic material.

FIG. 1 shows the construction of a power splitter with three directional responses; in fig. 2 shows the construction of a single directional coupler: in FIG. 3 - section aa of FIG.

The directional couplers 1,2,3 are made on a ferrite substrate 4 magnetized by an external magnetic field H. The current carrying conductor of the primary strip line 5 (FIG. 2) of each directional coupler is electrically connected to the screen 6 through the edge of the substrate 7. The current carrying conductor of the output line 8 ( Fig. 2) is electrically connected to the screen through the end face 9 of the hole 10 made in the ferrite substrate 4. A rod 11 is installed in the hole (Fig. 2,3) made of magnetic material. To divert power from the divider, a transition 12 is made to the standard strip line.

The construction of a power divider with an arbitrary number of directional actuators is similar to that described above.

The power divider works as follows. Let the microwave power is supplied to the primary strip line 5 of the first directional coupler 1 in the direction away from the observer (see FIG. 1). In the region of the first directional coupler 1, the power is divided between the primary 5 and secondary lines 8. In the general case, waves can propagate along the lines in the forward and reverse directions in a system of connected lines. The proposed design uses the property of unidirectionality in a system of non-uniformly connected microstrip lines. This means that in a system of connected microstrip lines, in which the current-carrying conductors are connected to a shield, as shown in FIG. 1-3, the reverse wave in the primary line 5 (in the direction towards the observer in Figure 1) and the forward wave in the secondary line 8 (in the clockwise direction in Figure 1) are practically not excited. Therefore, the division of power in the first and subsequent directed couplers occurs without

losses, which significantly increases the efficiency of the divider. The power coupled by each directional coupler enters the standard strip line through the junction.

A portion of the power that is not branched off by the first directional coupler 1 goes to the second directional coupler 2, and so on. A part of the power that is not branched off by the last directional coupler enters the output of the power splitter. Due to the property of one-pointedness in the power divider, there are no internal primary reflections between

directional couplers and other elements of the power splitter design, which significantly reduces the unevenness of the power division and increases the efficiency compared to the prototype.

The main radio characteristic of the divider is the division factor, which depends on the magnitude of the connection between the primary and secondary lines in the directional couplings. By installing a rod of magnetic material along the axis of each hole in the ferrite substrate, the magnitude of the connection between the lines is effectively changed, which greatly simplifies the setting and adjustment of the divider.

Claims (2)

1. Microwave power divider containing located on a shielded magnetized ferrite substrate a strip conductor of the input line electrically connected at the end of the substrate with a screen, and n strip conductors of output lines electromagnetically connected by one side edge to the strip conductor of the input line, characterized in that, in order to increase the efficiency and reduce the unevenness of power division, the other side edge on / sue conductor of each of the weekend lines are connected to the screen by means of a conductive jumper located on the side walls of the holes, which are made in the ferrite substrate, 2. The power divider according to claim 1, from l and h and-y u and. and in order to simplify adjusting and adjusting the parameters; a rod of magnetic material is mounted along the axis of each hole in the ferrite substrate. & i / e.1 A 4-5 7Fig. Z A-A Fig.Z