JPS62210701A - Method for adjusting microwave integrated circuit - Google Patents

Abstract

PURPOSE:To facilitate the minute adjustment by providing many adjusting lands around an open stub added to a main line formed on a circuit board. CONSTITUTION:The main line 2 added with the open stub 3 is formed on the circuit board 1 and a MIC circuit 6 is mounted on the circuit board 1, where plural lengthwise adjusting lands in the lengthwise direction and plural adjusting lands 5 of the open stub 3 are provided. In adjusting the MIC circuit 6, the adjusting lands 4, 5 are connected or the open stub 3 is disconnected. Through the provision of the adjusting lands 5, the Q is lowered.

Description

[Detailed Description of the Invention] [Summary] A method for adjusting a microwave integrated circuit, in which a large number of adjustment lands are provided around an open stub attached to a main line formed on a circuit board on which a microwave integrated circuit is mounted. Fine adjustments can be made by connecting or disconnecting this adjustment land to an open stub.

[Industrial application field]

The present invention relates to a method for adjusting a microwave integrated circuit, and more particularly to a method for adjusting a microwave integrated circuit in which an adjustment land is provided around an open stub.

In recent years, there has been a trend toward higher frequencies used in wireless communication devices. As the frequency becomes higher, the sensitivity becomes higher (and finer adjustments are required), so there is a strong demand for the development of a method for adjusting microwave integrated circuits that allows fine adjustments to be made easily.

[Conventional technology]

FIG. 2 is a plan view of essential parts for explaining a conventional method for adjusting a microwave integrated circuit.

In the figure, a main line 2 with an open stub 3 is formed on a circuit board made of ceramic or the like, and a plurality of longitudinal adjustment lands 4 (two shown in the figure) are provided in the longitudinal direction of the open stub 3. - A microwave integrated circuit (hereinafter referred to as MIC circuit) 6 is mounted on the circuit board l.

To adjust the MIC circuit 6, a method is adopted in which the longitudinal adjustment lands 4 formed in the longitudinal direction of the open stub 3 are connected by soldering or the like, or the open stub 3 is separated.

[Problem that the invention seeks to solve]

In the above conventional adjustment method for microwave integrated circuits,
Although coarse adjustment can be easily performed, there is a problem in that fine adjustment cannot be performed because as the frequency used increases, so does the sensitivity.

[Means for solving problems]

The present invention solves the above-mentioned problems and provides a method for adjusting a microwave integrated circuit that allows fine adjustment to be easily performed.

That is, in a microwave integrated circuit in which an open stub is attached to a main line formed on a circuit board, a plurality of adjustment rounds are provided on both sides of the open stub in the width direction,
The solution is to perform the adjustment by connecting or disconnecting the adjustment land to the open stub.

[Effect]

The method for adjusting the microwave integrated circuit described above includes not only forming a plurality of longitudinal adjustment lands in the longitudinal direction of the open stub, but also forming a plurality of adjustment lands on both sides in the width direction, and connecting or connecting these adjustment lands to the open stub. Fine adjustments can be easily made by separating the open stub.

〔Example〕

FIG. 1 is a plan view of essential parts explaining one embodiment of the present invention.
Parts equivalent to those in FIG. 2 are given the same reference numerals.

In the figure, a main line 2 with an open stub 3 is formed on a circuit board 1 made of ceramic or the like, and a plurality of longitudinal adjustment lands 4 (two are shown in the figure) in the longitudinal direction of the open stub 3, A MIC circuit 6 is mounted on a circuit board 1 on which a plurality of adjustment rounds 5 (three on each side in the drawing) are provided on both sides in the width direction. To adjust the MIC circuit 6, the longitudinal adjustment lands 4 formed in the longitudinal direction of the open stub 3 and the adjustment lands 5 provided on both sides in the width direction are connected, or the open stub 3 is separated. be.

By providing the adjustment land 5 in the horizontal direction in this way, the Q
can be lowered. In addition, there are 6 adjustment lands in place of the 2 adjustment lands.
By increasing the number of units, the adjustment range is quadrupled.

In this embodiment, two longitudinal adjustment lands 4 and three width adjustment lands 5 are provided on each side, but the number is not limited to this number depending on the purpose. I don't mind.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, fine adjustment can be easily performed, so that it is extremely effective when applied to microwave integrated circuits with higher frequencies.

[Brief explanation of drawings]

FIG. 1 is a plan view of a main part explaining an embodiment of the present invention, and FIG. 2 is a plan view of a main part explaining a conventional method for adjusting a microwave integrated circuit. In the figure, 1 is a circuit board, 2 is a main circuit, 3 is an open stub, 4 is a longitudinal adjustment land, 5 is an adjustment land, and 6
indicate MIC circuits, respectively.

Claims (1)

[Claims] In a microwave integrated circuit in which an open stub (3) is attached to a main line (2) formed on a circuit board (1), a plurality of adjustments are provided on both sides in the width direction of the open stub (3). A method for adjusting a microwave integrated circuit, characterized in that adjustment is performed by providing a land (5) and connecting or disconnecting the adjustment land (5) to the open stub (3).