RU2577805C1 - Device for characterization of microwave devices - Google Patents

Abstract

FIELD: measuring equipment.

SUBSTANCE: invention relates to electrical engineering, radio engineering, electronic industry and can be used in the process of setting and checking efficiency of microwave devices (a few microwave devices) for the removal of his (their) performance over a wide frequency range. Device for characterization of microwave devices containing base and coaxial-microstrip transition (KMPP). Thus each KMPP mounted on a bracket that moves along the axis, movable in a plane parallel to the base, and microwave devices motion perpendicular to the base is carried out pushers.

EFFECT: technical result is to enable the characterization of microwave devices, regardless of its size, the thickness of the board, the number and location pins.

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Description

The invention relates to the electrical, radio engineering, electronic industries and can be used in the process of setting up or checking the operability of a microwave device (several microwave devices) to remove its (their) characteristics in a wide frequency range.

For microwave devices made on a microstrip line or made using another technology, but having microstrip leads (hereinafter referred to as microwave devices), especially at the pilot production stage, adjustment is often required. Tuning is usually carried out using indium and dielectric overlays, as well as by trimming the tracks of the printed circuit board. In this case, the removal of the necessary frequency characteristics of the tuned device is performed using hard-mounted coaxial microstrip transitions (KMPP) or devices made in the form of metal bases with similar transitions fixed to them. Before installing a microwave device in the product’s case, it is also checked for its operability by a similar characterization.

The prior art design of devices in which in a production environment checks and adjusts microstrip microwave devices before they are installed in the product [1]. The device is a base having a recess for mounting a microwave device into it. The base is made of conductive material or covered with a conductive coating. On the device in certain places fixed KMPP, allowing to remove the characteristics of the installed microwave device.

The disadvantage of the device is the need to manufacture various designs, depending on the dimensions and thickness of the board of the microwave device, the number and location of the terminals.

The objective of the invention is to provide the ability to take characteristics of a microwave device, regardless of its dimensions, board thickness, number and location of conclusions.

This task is achieved by the fact that in the device for characterizing microwave devices containing a base and coaxial microstrip junctions, in addition each KMPP is mounted on an arm that moves along an axis moving in a plane parallel to the base, and the movement of microwave devices perpendicular to the base is carried out pushers. If the findings of the tuned microwave device are located on four sides, then the brackets for the KMPP have two versions, and in one version the hole for the axis is made parallel to the KMPP axis of symmetry, and in the second - perpendicularly. To enhance the fixation of the microwave device on the device in the pushers, mounting holes are made, which are used to attract the microwave device with fasteners.

The proposed device allows, due to the brackets with KMPPs mounted on them, moving in a plane parallel to the base, and pushers moving perpendicular to the base, to remove the characteristics of microwave devices having different dimensions and thickness of the board, differing in the number and location of the terminals. At the same time, it is possible to configure a microwave device. Characterization and, accordingly, tuning, when using the corresponding manual transmissions, are performed in a wide frequency range. In addition, the device allows you to install several microwave devices together and take characteristics from them, which can be useful when they are configured together.

In FIG. 1 shows a general view of the proposed device with a microwave device installed on it; FIG. 2 and FIG. 3 - two versions of the bracket with fixed KMPP.

To enable placement of microwave devices of various sizes, the proposed device provides the possibility of moving the KMPP in a horizontal plane. For this, each KMPP 1 is mounted on a bracket 2, which moves along the axis 3, which is moved in turn in a plane parallel to the base 4 (Fig. 1). The thickness of the circuit board of the microwave device 5 is taken into account by the pusher 6, lifting the microwave device 5 to the required height. As a result of this, the device is not tied to the thickness of the board of the microwave device. The microwave device 5 is fixed by pressing the pusher 6 against the central terminals 7 of the coaxial microstrip transitions 1 protruding from the brackets 2. There may be several pushers 6 depending on the dimensions of the microwave device 5. The electrical contact of the microwave device 5 and the device is provided using metal materials of the device elements or conductive coatings.

The findings of the tunable microwave device 5 can be located on four sides, so the brackets 2 for KMPP 1 can have two designs, with the hole for the axis in one design parallel to the KMPP axis of symmetry 1 (Fig. 2), and in the second perpendicular (Fig. 3).

The strengthening of the fixation of the microwave device 5 on the device is due to the mounting holes in the pushers 6 (not shown conditionally), which are used to attract the microwave device 5 by fasteners (not shown conventionally).

When used in the device for characterizing microwave devices of domestic KMPP type SRG-50-751 PV for each KMPP, it is possible to obtain a standing wave voltage coefficient (VSWR) of no more than 1.5 in the range from 0 to 18 GHz. Through the use of other KMPP, it is possible to expand the frequency range with an acceptable value of VSWR.

The operation of the device for characterizing microwave devices is as follows. The microwave device 5 is placed on the device. The characterization of the microwave device 5 is carried out by connecting its microstrip terminals with coaxial microstrip transitions 1 from the composition of the device. Therefore, then, to the terminals on the edges of the circuit board of the microwave device 4, pull the axles 3, on which the brackets 2 are mounted with the KMPP 1 attached to them. The brackets 2 are oriented so that the central conclusions 7 of the KMPP 1 are located above the terminals of the microwave device 5. Tighten the axis 3 and the brackets 2 until the brackets 2 are pressed closely against the edges of the board of the microwave device 5. After that, the position of the bracket 2 is fixed on the axis 3 by fasteners (not shown conditionally in Fig. 1). Depending on the thickness of the board, the microwave device 5 is lifted to the desired height by the pushers 6. In this case, the terminals 7 of the KMPP 1 should be compatible with the conclusions on the board of the microwave device 5. At the same time, the microwave device 5 is fixed by pressing the pushers 6 against the central terminals 7 of the coaxial microstrip transitions 1, protruding from the brackets 2. To reduce the errors of the recorded characteristics, as well as to strengthen the fixation after pressing, additional fixation of the KMPP 1 to the microwave device 5 can be carried out with jumpers or soldering. In FIG. 1, arrows conventionally indicate the directions in which efforts are applied to ensure fixation.

Example. The device is implemented using domestic KMPP type SRG-50-751 FV. The minimum distance between the terminals on one side of the device is determined by the width of the brackets, depending on the diameter of the KMPP, and when using these KMPP was 8 mm. The maximum thickness of the board of the device to be tuned is determined by the distance between the base and the central conductor of the KMPP and in this embodiment was 18 mm. The minimum dimensions of the installed microwave device were approximately 3 × 5 mm, the maximum - 200 × 280 mm. For convenience, the pushers are mounted on four plates that have the ability to move parallel to the base.

Information sources

1. Dzhurinsky K.B. Miniature coaxial radio components for microwave microelectronics. - M.: Technosphere, 2006 .-- 216 p.

Claims (3)

1. A device for characterizing microwave devices containing a base and coaxial microstrip transitions (KMPP), characterized in that each KMPP is mounted on a bracket that moves along an axis that moves in a plane parallel to the base, and the movement of the microwave devices is perpendicular to the base carried out by pushers. 2. The device according to claim 1, characterized in that the brackets for KMPP have two versions, moreover, in one version, the hole for the axis is made parallel to the KMPP axis of symmetry, and in the second - perpendicularly. 3. The device according to p. 1, characterized in that the pushers contain mounting holes for fixing the microwave device.

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