JPS59198001A - Method for mounting high frequency circuit - Google Patents

Abstract

PURPOSE:To attain effective utilization of space on device constitution by fitting other components to a metallized side face of a dielectric filter of stable integral form so as to attain an integral structure. CONSTITUTION:A mixer 3 of rectangular parallelepiped shape is fitted to the metallized side face 2 of the dielectric filter 1 and the dielectric filter 1 fitted with the mixer 3 is accommodated in a mounting case 4. The mounting case 4 plays also a role of a shield case. Through the constitution above, the dielectric filter 1 and the mixer 3 are shielded mutually by means of the metallized side face 2 or the like. Then, the space and the accommodating case needed conventionally for mounting a mixer and a synthesis circuit or the like are saved remarkably and further, a coaxial cable for connection is eliminated.

Description

Detailed Description of the Invention (a) 1 Technical Field of the Invention The present invention relates to a method for mounting a high frequency circuit, and in particular to a method for mounting a high frequency circuit by effectively utilizing the metallized surface of a mechanically and electrically stable dielectric filter. It is about the method.

(b), Prior Art and Problems In mobile radio systems such as automobile radio systems, in response to the demand for an increase in the number of channels, ultra-high frequencies are being shifted from the VHF band to the UHF band and then to the microwave band. Mobile devices for mobile radio systems are required to be smaller and more economical.

Conventionally, filters, mixers, etc. used in these radio devices are housed in separate cases, and the cases are connected by coaxial cables or the like.

This requires a very large space in terms of equipment configuration, and has the disadvantage that each circuit is connected with a coaxial cable, which requires time and effort to implement.

(C)9 Purpose of the Invention The purpose of the present invention is to eliminate the above-mentioned drawbacks of the prior art;
An object of the present invention is to provide a method for mounting a high-frequency circuit that is lightweight, compact, and requires no effort in mounting.

(d) 1 Configuration of the Invention According to the present invention, a plurality of holes are formed at predetermined intervals on any one surface of a rectangular parallelepiped dielectric block, and the inner surface of the hole and the open end of the resonant element are connected to each other. In the dielectric filter formed by metallizing all surfaces of the dielectric block other than the surface of the dielectric block, another high frequency circuit unit is attached to the metalized surface by screwing or welding. This is achieved by providing a method for mounting a high frequency circuit including a dielectric filter.

(e) 6 Embodiments of the Invention The present invention provides an integrated structure by attaching other parts to the metallized sides of a conventionally used electrically and mechanically stable integrated dielectric filter, which takes up less space in terms of equipment configuration. This aims to make effective use of.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

+8+ in FIG. 1 is a diagram in which a mixer composed of a dielectric filter and a micro-strip line is integrated and housed in one case, and (bl is the electrical circuit diagram).

In this case, the mixer ■ having a rectangular parallelepiped shape is attached to the metalized side surface ■ of the dielectric filter ■, and the mixer ■
The dielectric filter (■) with which it is attached is housed in the mounting case (■). It is installed in a case, which also serves as a shielding case.

In such a configuration, the dielectric filter (2) and the mixer (2) are shielded from each other by the metallized side surface (2) and the like, and both are shielded from each other when mounted outside the case (2).

Conventionally, as shown by the dotted line in FIG. are no longer required.

Since the mixer ■ is attached to the metalized side surface ■ of the Bungo electronic filter ■, the distance between both circuits is very short, so it can be connected with a strump wire, for example, and there is no need to connect it with a coaxial cable like in the past. becomes easy.

ta) in Fig. 2 is a band pass filter composed of a dielectric filter and a micro strip line 717.
6 is a diagram in which six low-pass filters are integrated and housed in one case, and (b) is an electrical circuit diagram of this case.

In the case of Fig. 2, a micro-slip with a rectangular parallelepiped shape is attached to the metallized side surface ■ of the dielectric filter ■.
A line low pass filter ■ is installed, and the installation is housed in a case ■.

In this case as well, the dielectric filter (2) and the micro-strip line low-pass filter (2) are shielded from each other by the metallized side surface (2), and the mounting is shielded from the outside by the case (2).

Bungo electronic filter ■ and micro strip line
Since the distance between the two circuits of the low pass filter (2) is very short, they are connected, for example, with a strap wire, and there is no need to connect them with a coaxial cable as in the past, making the implementation simple.

In Figure 3 (al) is a micro-strip line fill and a composite circuit composed of micro-strip lines mounted on the metallized A-law surface of a dielectric filter, making it compact and lightweight. (bl is this electrical circuit diagram.

Metallized Ill of receiving dielectric filter ■; 1
Attach a transmitting micro-strip line filter ■ with a rectangular parallelepiped shape to the surface [phase], and attach a synthetic circuit @ composed of a rectangular parallelepiped micro-strip line to the other metalized side surface @, and then attach the case. (2) and used as a duplexer.

Therefore, the receiving dielectric filter ■ and the transmitting micro-slip line filter ■ are shielded from each other by the metallized side surface [phase], and the receiving dielectric filter ■ and micro・
The composite circuits O constructed of strip lines are shielded from each other and shielded from the outside by a case 0. Due to your reasons, we have installed a coaxial cable between the receiving dielectric filter ■ and the transmitting micro strip line filter 0, and a coaxial cable between the receiving dielectric filter ■ and the composite circuit 0 consisting of the micro strip line. Cables are no longer required and connections can be made using strump wires.

(f) 1. Effects of the Invention As explained in detail above, according to the present invention, the space and housing case conventionally used to mount mixers, synthesis circuits, etc. can be significantly saved, and furthermore, the coaxial cable for connection can be saved. It has the great effect of being able to remove.

[Brief explanation of drawings]

FIG. 1(a) is a diagram in which a mixer composed of a dielectric filter and a microstrip line is integrated and housed in one case, and FIG. 1(b) is an electrical circuit diagram thereof. fal in Fig. 2 is a diagram in which a hand bass filter composed of a dielectric filter and a low bass filter composed of a microstrip line are integrated and housed in one case, and (b) shows this. FIG. In Figure 3 (al), a composite circuit consisting of a micro-strip line filter and a micro-slip line is installed on the meklyzed side of the dielectric filter to make it smaller and lighter. It is a wave machine, (bl
is this electrical circuit diagram. See 1 (σ) 昂3 (1)) Diagram C, b)

Claims (1)

[Claims] A plurality of holes are formed at predetermined intervals on any one surface of a rectangular parallelepiped dielectric block, and all surfaces of the dielectric block other than the inner surface of the hole and the curve that becomes the open end of the resonant element are metallized. A method for mounting a high frequency circuit including a dielectric filter, characterized in that, in the dielectric filter, another high frequency circuit unit is attached to the metallized surface by screwing or welding.