JPH0458602A - Delay line device - Google Patents

Abstract

PURPOSE:To make the device small by overlapping microwave integrated circuits to form a delay line and forming a characteristic deterioration compensating circuit integrally. CONSTITUTION:Plural microwave integrated circuit boards 1a-1c each having a signal strip signal line for delay purpose on other side and insulation boards 2a-2c are overlapped alternately and another insulation board 5 is overlapped at the outside and they are integrated to form a delay circuit. The board 5 is integrated with a compensation circuit 7 compensating the deterioration in the electric characteristic due to delay. The delay line circuit device is made small through the adoption of the integral configuration of employment of the strip line and the plural overlapped boards.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a delay line used in microwave communication devices and the like.

[Prior art] Conventionally, the delay line used in microwave communication equipment, etc.
For example, as shown in FIG. 3, the structure is based on a coaxial line 14 wound into a coil, and a desired delay time can be obtained by adjusting the length of the union. In addition, as an advanced form of the microwave integrated circuit 15, as shown in FIG.
In recent years, a structure in which a desired delay time can be obtained by adjusting the combination length of the strip lines 16 has been widely applied.

[Problem to be solved by the invention Ma1 By the way, since the above-mentioned conventional strip line history delay line can only be formed on a flat surface, if a longer delay time is required, the strip line can be formed while inserting an insulating substrate. By stacking several 1M sheets and electrically connecting the ground plane of each strip line and the signal line through the through holes provided on each board, it is possible to obtain more delay time with the total length of the connected signal lines. . However, a strip line has a larger conductor resistance than a coaxial line, and therefore has a large passing loss, and in terms of frequency characteristics, the passing loss increases as the frequency becomes higher, resulting in an amplitude characteristic with a -th order slope.

Therefore, when applying the multilayer stripline delay line to a microwave communication device, an amplifier circuit to compensate for the passing loss and an amplitude equalization circuit to compensate for the primary slope are required as external circuits, and these circuits are printed separately. Since it has to be installed in a large area, a large space is required, which is an obstacle to high integration.

The present invention has been made in view of the above problems, and
The purpose of this invention is to provide a delay line device that can be made more compact.

[! ! Means for Solving WJ] In order to solve such problems, the delay line device of the present invention has a ground plane made of a full conductor on one side of a plate-shaped insulating substrate, and a ground plane made of a conductor on the other side. A microwave integrated circuit board provided with a signal line consisting of a strip line and a plurality of insulating substrates whose front and back sides are insulated are stacked alternately and arranged in a row, and each of the micro-waves is connected through a through hole provided in each substrate. a delay line device configured to electrically connect the ground plane of a wave integrated circuit board and a signal line to obtain a desired delay time with the total length of the connected signal lines, Another insulating substrate is attached to the outside of the delay line, and an amplification and amplitude equalization circuit for compensating for deterioration of the electrical characteristics of the delay line is formed on this insulating substrate.

Further, the above-mentioned separate insulating substrate is provided with a ground terminal and an input/output terminal, which are connected to the ground plane and signal line of each microwave integrated circuit board through through holes. Providing a terminal is effective.

[Function] According to the delay line device of the present invention, a delay line is formed in which microwave integrated circuits are arranged in a row to obtain a desired delay time, and amplification and amplitude compensation are performed to compensate for deterioration of the electrical characteristics of this delay line. The equalization circuit is integrally formed, and the device can be made smaller.

[Example] Hereinafter, a delay line device according to an example of the present invention will be described with reference to the drawings.

1 and 2 show one embodiment of the invention.

FIG. 1 is a perspective view of the overall configuration, and FIG. 2 is a partially exploded perspective view.

In these figures, the delay line device includes a plurality of (here, three) microwave integrated circuit (MIC) substrates 1a to 1.
lc and three insulating substrates 2 a S 2 c, these substrates are stacked alternately and arranged in a row, and another insulating substrate 5 is stacked on the outside to integrate them. It is configured.

The microwave integrated circuit boards 1a-1c have ground planes 11a-11c made of conductors all over the surface on one surface, and strip lines 10a=10 as signal lines on the other surface.
It forms c. Further, the strip lines 10a of each microwave integrated circuit board 1a-1c are passed through the through holes 9a to 9f provided in the insulating substrates 2a to 2C.
10c are electrically connected, and the total length of the connected strip lines 10a to 10c constitutes a delay line that obtains a desired delay time.

Further, the respective ground planes 11a to 11cft are connected through through holes 8a to 8g similarly provided in the insulating substrates 28 to 2C. Further, the strip line 10c of the microwave integrated circuit board 1c closest to the insulating substrate 5 is connected to the thick circuit 13 on the insulating substrate 5 through the through hole 9d.

A compensation circuit 7 is formed on the insulating substrate 5 to compensate for electrical characteristics. This compensation circuit 12!7 constitutes an amplifier Ila and an amplitude equalization circuit for compensating for deterioration of the electrical characteristics of the delay line.

These microwave integrated circuit boards 1a to lc and insulating substrates 2a to 2C are desirably made of, for example, ceramic, and are integrated by firing or the like.

Then, strip-shaped connection pieces are connected to appropriate parts guided to the microwave 11 spear circuit board 1a and the insulating board 5 through the through holes 8a to 8g and 9a to 9f to form input/output terminals 3a and 3b. At the same time, connect the connecting piece to the ground terminal 4a.

It is set as 4b. Further, a connecting piece 6 is connected to the insulating substrate 5, and is configured as a bias terminal of a compensation circuit 7.

Therefore, according to the delay line device having this configuration, since the multiple boards are stacked and integrated, and the compensation circuit 7 is added to compensate for the deterioration of the electrical characteristics, the delay line device is small and takes up little space. , moreover, there is less deterioration of characteristics.

Further, since the strip line 10 a = l Oc can be formed by printing or the like, its length can be controlled with high precision, and the delay time can be adjusted with high precision.

[Effects of the Invention] Hereinafter, according to the delay line device of the present invention, a plurality of microwave integrated circuit boards and insulating substrates are alternately stacked and arranged in a row, so that each microwave The ground plane of the integrated circuit board and the signal line are each electrically connected, the total length of the connected signal lines constitutes a desired delay line, and further,
Since a compensation circuit that compensates for the deterioration of the characteristic characteristics is integrally added, it is possible to form a compact delay line without deterioration of the characteristics, and the length of the delay line can be formed with high precision, reducing the delay time. Time adjustment can be made with high precision.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a 'N delay line device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a delay line pasted according to an embodiment, and FIGS. 3 and 4 are conventional delay lines. It is a perspective view showing an example of a device. la-1c: Microwave integrated circuit board 2a-2c: Insulating substrate 3a, 3b: Input/output terminal 4a, 4b: Ground terminal 5: Insulating substrate 6: Bias terminal 7: Compensation circuit 8a-8g, 9a-9f Varnished through hole 10a~
10C strip line 11a ~ llc: Laying ground Figure 1

Claims (2)

[Claims] (1) A microwave integrated circuit board that has a ground plane made of a full conductor on one side of a plate-shaped insulating substrate and a signal line made of a strip line on the other side, and the front and back sides are insulated. A plurality of insulating substrates are alternately stacked and arranged in a row, and the ground plane of each of the microwave integrated circuit boards and the signal line are electrically connected through through holes provided in each of the substrates, and the connected signal line is formed. A delay line device comprising a delay line that obtains a desired delay time with a total length of 1. A delay line device comprising an amplification and amplitude equalization circuit that compensates for deterioration of the signal. (2) A connection terminal connected to the ground plane of each microwave integrated circuit board through a through hole and an input/output terminal connected to a signal line are provided on the above-mentioned separate insulating substrate, and the above-mentioned amplification and amplitude equalization circuit are provided. 2. The delay line device according to claim 1, further comprising a bias terminal.