JPS6033705A - Transmission line device - Google Patents

Abstract

PURPOSE:To form a transmission line device whose Q performance is improved and whose transmission line constant is stabilized by providing a main transmission line electrode in a way of connection to an auxiliary conductor provided at a required part of a dielectric substrate. CONSTITUTION:The main transmission line electrodes 8 and 9 are provided respectively in a way of connection on the surface of respective auxiliary conductors 6 and 7 being continuous in parallel with the surface of the dielectric substrate 5. Thus, the main transmission line electrodes are constituted thick so as to improve the Q performance, and the auxiliary conductors acts like connecting installed position deciding marks of the main transmission electrodes so as to stabilize the transmission line constant.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the configuration of a transmission circuit that can be used in transmitters and receivers of televisions, radios, stereo tuners, personal radios, and other communication devices in general.

Conventional configurations and their problems In recent years, the number of broadcast waves from televisions and radios and communication waves from communication devices has increased, and the performance of the transmission circuit that makes up the tuner that selects the desired signal requires high tuning accuracy and stability. Demand for reliability and reliability is increasing. On the other hand, those receivers,
Reducing the manufacturing costs of transmitters and communication devices is also a major issue, and fundamental technological development is required especially for the transmission circuits that make up the tuners in the high-frequency section, which are difficult to rationalize.

A conventional transmission line device will be described below with reference to the drawings. FIG. 1 is a diagram showing the configuration of a conventional transmission line, in which a transmission line 2 is formed by a printed pattern by etching or a thick film pattern by printing on the surface of a dielectric substrate 1, and is connected to turn parts 3 and 4 by other circuits. was formed with.

However, in the above configuration, ■ In the case of printed circuits using the etching method, the transmission line can actually only be formed with a thickness of about 70 μm at most, and the Q performance is significantly degraded due to the skin effect of high frequencies. It had deteriorated.

■ Even in the case of thick film patterns formed by printing, the thickness of the transmission path can only be practically as thin as 160 μm, and furthermore, there is no ideally low conductivity of the printed conductor material. Q performance had deteriorated significantly. Although some printing materials with relatively low conductivity exist, they are very costly and impractical.

■ In the case of thick film patterns produced using printing methods, printing accuracy becomes an issue, and it is difficult to determine the installation accuracy of the transmission line, length, IJ, and thickness, and the transmission line constants may be significantly uneven in mass production. There were problems such as:

Purpose of the Invention The purpose of the present invention is to realize a transmission line formed on a dielectric substrate with a high Q performance with a simple configuration, and to realize a transmission line constant with little variation even when mass-produced. be.

Structure of the Invention The transmission line device of the present invention is configured such that an auxiliary conductor with a desired transmission line shape is provided at a required portion on both sides or any one side of a dielectric substrate, and a main transmission line electrode is connected to the auxiliary conductor. As a result, the main transmission line electrode is made of a thick material, which acts to improve the Q performance, and the auxiliary conductor acts as a connection installation medium for the main transmission line electrode, and also serves as a connection medium for the main transmission line electrode. It functions as an installation position determination mark and acts to stabilize the transmission path constant.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 2 shows a configuration diagram of a transmission line device in an embodiment of the present invention. Main transmission line electrodes 8 and 9 are connected to the surfaces of the respective auxiliary conductors 6 and 9 which are arranged in parallel and continuous on the surface of the dielectric substrate 5.

FIG. 3 shows a configuration diagram of a transmission line device in another embodiment of the present invention. Main transmission line electrodes 16 and 16 are connected and connected to bridge the surfaces of auxiliary electrodes 11 and 13 and 13 and 14, which are arranged in parallel on the surface of dielectric substrate 1Q and are discontinuously divided, respectively. It is something.

FIG. 4 shows a configuration diagram of a transmission line device in another embodiment of the present invention. A main transmission line electrode 20 is connected to the surface of an auxiliary conductor 190 on any one side of the auxiliary conductors 18 and 19 which are arranged in parallel and continuous on the surface of the dielectric substrate 17. In this case, the auxiliary conductor 18 is used as the main transmission path electrode.

On the other hand, although the auxiliary conductor 19 is shown as being continuous, it may be discontinuous as shown in FIG. 3 above.

FIG. 5 shows a configuration diagram of a transmission line device in another embodiment of the present invention. Main transmission line electrodes 26 and 27 are connected to the respective surfaces of auxiliary conductors 24 and 26, which are arranged in parallel on the surface of dielectric substrate 21 and connected to other circuit components 22 and 23. . In this case, both or any one side of the auxiliary conductors 24 and 26 may be discontinuous as shown in FIG. A conductor may be used as the main transmission path electrode.

FIG. 6 shows a side view of the configuration of a transmission line device in another embodiment of the present invention. Main transmission line electrodes 31 and 32 are connected to and installed on the surfaces of continuous auxiliary electrodes 29 and 30 that are placed opposite to each other on the surface of the dielectric substrate 28. In this case, any one of the auxiliary conductors 29 and 30 may act as the main transmission line electrode, and the main transmission line electrode 31 or 32 may not be installed.

FIG. 7 shows a side view of the configuration of a transmission line device in another embodiment of the present invention. Main transmission path electrodes 38 and 39 are connected to the surfaces of discontinuous auxiliary conductors 34 and 35, and 36 and 37, which are disposed opposite to each other on the surface of dielectric substrate 330.

Even if the auxiliary conductor and the main transmission line electrode in the configuration of the embodiment shown in FIGS. 6 and 7 are arranged in a mixed manner on each surface of the dielectric substrate, the desired purpose can be achieved.

FIGS. 8 to 14 show embodiments of the main transmission line electrodes of the transmission line apparatus described in FIGS. 6 and 7. In FIG. 8, (-) shows a front view, (b) shows a side view, and (c) shows a back view. (Figures 9 to 14 below)
In FIG. 8, 100 is a dielectric substrate, and 101 and 102 are main transmission path electrodes. 8th
A side, B shown in Figure (=) and A side, B shown in Figure 8 (C)
correspond to each other.

(The same applies to FIGS. 9 to 14 hereinafter) In FIG. 8, the auxiliary electrode is not shown, as it is assumed that one of the structures shown in FIG. 6 or FIG. 7 is used. (The same applies to FIGS. 9 to 14 below) In FIG. 9, main transmission line electrodes 104 and 105 each having one bend are placed opposite to each other with a dielectric substrate 103 interposed therebetween.

In FIG. 10, main transmission line electrodes 10 and 108 having a plurality of bent portions are placed opposite to each other with a dielectric substrate 106 interposed therebetween.

In FIG. 11, meander-shaped main transmission line electrodes 110 and 111 are placed facing each other with a dielectric substrate 109 in between.

In FIG. 12, spiral-shaped main transmission line electrodes 113 and 114 are placed facing each other by removing a dielectric substrate 112.

In FIG. 13, main transmission line electrodes 119 and 120 are disposed inside a dielectric substrate 118, facing each other.

In FIG. 14, a main transmission line electrode 122 is installed inside a dielectric substrate 121, and on the other hand, a main transmission line electrode 123 is installed on the surface of a dielectric substrate 1210, and the respective main transmission line electrodes 122 and 123 are opposed to each other. .

In the embodiments shown in Figures 8 to 14 above, the main transmission line electrodes installed opposite each other have the same shape and completely face each other, and ζ is an arbitrary one electrode force; Even if they are different, it can still be realized even if the partner electrodes partially face each other. Furthermore, the main transmission line conductivity shapes used in the embodiments shown in FIGS. 13 and 14 can also be realized using those shown in the embodiments shown in FIGS. 9 to 12.

In the embodiments shown in FIGS. 8 to 14, it is also possible to form a transmission path using only continuous auxiliary conductors without installing a main transmission path electrode on any one side (not shown).

In addition, in the embodiments shown in FIGS. 2 to 5, the shapes of the main transmission path electrodes and auxiliary conductors are
It can also be realized by arranging devices similar to those shown in the figures to FIG. 12 in parallel. Furthermore, the discontinuous auxiliary conductors 11, 12, 13, 14, 34, 35, 36, and 37 in the embodiments shown in FIGS. 3 and 7 are each divided into two pieces for each of the main transmission line electrodes. However, the number of divisions is arbitrary as long as it is addressed to two or more.

In each of the above embodiments, the one shown in Fig. 2 can easily realize the position alignment of the main transmission line electrode with respect to the auxiliary conductor, and the one shown in Fig. 3 allows the main transmission to be carried out without the transmission line constant being affected by the auxiliary conductor. The design of the transmission circuit is easy because it is determined by only the line electrodes, the one shown in Figure 4 can omit the main transmission line electrode on one side, reducing costs, and the one shown in Figure 6 is easy to design with other circuits. Connections can be made rationally and the circuit including the transmission line can be operated stably, and the circuits shown in Figures 6 and 7 can accurately set the opposing positional relationship between the main transmission line electrodes. In the case shown in Fig. 8, the auxiliary conductor and the main transmission line electrode can be constructed with a simple pattern, and in the case shown in Figs. The ones shown in Figures 13 and 14 can be used with multilayer boards, and the main transmission line electrodes are built-in, so the performance of the transmission circuit is not affected by external factors and is stable. It has features such as being able to construct circuits of various types.

In each of the above embodiments, a plurality of main transmission line electrodes and an auxiliary conductor are shown, which are installed facing each other or in parallel. The desired purpose can be achieved even with a single combination. Further, the relationship between the size of the area occupied by the main transmission path electrode and the size of the area occupied by the auxiliary conductor is arbitrary depending on the connection conditions.

The auxiliary conductor in each of the above embodiments can be printed metal conductor foil, printed thick film conductor or thin film conductor, and the dielectric substrate can be alumina ceramic, chitavari, glasstic, Teflon, glass, mica, and A resin printed circuit board or the like can be used.

Effects of the Invention As is clear from the above explanation, the present invention has a structure in which a thick main transmission line electrode is connected to an auxiliary conductor having the functions of position determination and connection medium, so that it has a simple structure. It is possible to form a thick transmission path, reduce loss due to skin effect at high frequencies, and improve Q performance.

(2) It becomes possible to effectively increase the thickness of only the portion that functions as the main transmission path, resulting in material savings.

■ Conventional methods such as soldering, brazing, and applying and drying conductive adhesive can be used to connect the auxiliary conductor to the main transmission line electrode, so other circuit components can be connected and installed, making it possible to connect a large amount of equipment including transmission circuits. Production becomes ixJ efficient and can be a harmful bird to reduce costs.

■ The installation position of the main transmission path electrode can be set with high precision.
Transmission circuit constants can be realized accurately, making circuit design easier.

■ Since the installation accuracy of the main transmission line electrodes can be reproduced with high precision using a simple construction method, variations in transmission circuit constants are minimal even in mass production.

This excellent effect can be obtained.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a perspective view of the configuration of a conventional transmission line device, FIGS. 2 to 5 are perspective views of the configuration of a transmission line device in an embodiment of the present invention, and FIGS. FIGS. 8 to 14 are configuration diagrams of the transmission line device in the embodiment of the present invention, in which (a) is a surface view, and (b) is a side view of the transmission line device in the embodiment of the present invention. ) is a side view, and (C) is a back view. 5, 10, 17, 21. 28, 33, 100° 103.
106, 109, 112, 118, 121...
Dielectric substrate, 6,7.11 to 14,18°19.2
4, 25, 29, 30. 34 to 37... Auxiliary conductor 8, 9, 15, 16, 20, 26° 27.31.
32, 38, 39, 101.102゜104.105,
107,108,110,111゜113.114,1
19, 12 (T, 122, 123...Main transmission line electrodes. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 ((14 (b) (C) (t and) [b) (C) Figure 11 Figure 12 (L) Cbノ (C) 13 Figure 14(2) (α) (b) (C)

Claims (1)

[Claims] (1) An auxiliary conductor with a desired transmission line shape is provided at a required portion on both sides or any one side of the dielectric substrate, and a main transmission line electrode is connected to the auxiliary conductor. transmission line equipment. (2) The transmission line device according to claim 1, wherein the main transmission line electrodes are placed opposite to each other via a dielectric substrate or are arranged in parallel on the surface of the dielectric substrate. (3) The transmission line device according to claim 2, wherein the terminals connected to the ground in each of the main transmission line electrodes are set in opposite directions. (4) The transmission line device according to any one of claims 1 and 3, wherein a continuous conductor is used as the auxiliary conductor. (5) The transmission line device according to any one of claims 1 and 3, using a discontinuous shape as the auxiliary conductor. (6) The transmission line device according to any one of claims 1 to 3, wherein any one side of each auxiliary conductor forms the main transmission line electrode. (7) The transmission line device according to any one of claims 1 to 6, which is connected to a circuit section other than the main transmission line electrode via an auxiliary conductor. (8) The transmission according to any one of claims 1 to 7, in which the main transmission line electrode has at least one bending portion exhibiting an arbitrary bending rate and an arbitrary bending direction. road device. (9) The transmission line device according to any one of claims 1 to 7, using a spiral-shaped main transmission line electrode. OQ The transmission line device according to any one of claims 1 to 9, wherein a relatively thick conductor is used for the main transmission line electrode and a relatively thin conductor is used for the auxiliary electrode. 0]) The transmission line according to any one of claims 1 to 10, wherein each main transmission line electrode or a part or all of the main transmission line electrode on any one side is installed inside the dielectric. Device. (6) Claims 1 to 1 in which respective main transmission line electrodes are installed at the inner circumference and/or outer circumference of a cylindrical or prismatic dielectric body.
The transmission line device according to any one of Item 1. θ Field The transmission line device according to any one of claims 3 to 12, wherein the terminals connected to the ground in each of the main transmission line electrodes are not connected to the ground but are made into a common terminal. (14) The transmission line device according to any one of claims 1 to 13, wherein a relatively thick conductor is used for the main transmission line electrode, and a relatively thin conductor is used for the auxiliary electrode.