JPH0591008U - Antenna feeding circuit - Google Patents

Abstract

(57) [Abstract] [Purpose] An antenna feeding circuit that can be mounted with a simple structure without attaching holes to the board for mounting connectors as input / output ports of the antenna feeding circuit composed of microstrip lines. provide. [Structure] In an antenna feeding circuit composed of microstrip lines used for an array antenna, a microstrip line 11 and a ground conductor 16 are provided on each of the front and back surfaces.
A first Teflon (registered trademark) substrate provided with and a second Teflon substrate provided with the microstrip line 12 and the ground conductor 17 on each of the front and back surfaces and having a connector 15 attached to the ground conductor 17. However, the microstrip lines 11 and 12 are joined to each other and combined.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an antenna feed circuit composed of a microstrip line used for a quasi-microwave or microwave band array antenna (or phased array antenna).

[0002]

[Prior art and its problems]

 Conventionally, as this type of device, there is an antenna feeding circuit shown in FIGS. 4 (A) and 4 (B). That is, generally, when the antenna feeding circuit is configured by the microstrip line, the microstrip line 2 provided on the printed board 1 is connected to the connector (connector connected to the coaxial cable) 3 as the input / output port. At this time, the square hole 4 for mounting the connector 3 on the printed circuit board 1 was opened, and the connector 3 was screwed using an appropriate jig (copper support). There was an inconvenience that it was troublesome to take out.

[0003]

[Means for Solving the Problems]

 The present invention aims to solve the above-mentioned problems of the prior art, and in order to solve the problem, in an antenna feeding circuit composed of a microstrip line used for an array antenna, a microstrip is provided on each of the front and back surfaces. A first Teflon substrate provided with a line and a ground conductor, and a second Teflon substrate provided with a microstrip line and a ground conductor on each of the front and back surfaces, and having a connector attached to the ground conductor, are connected to each other. It features a structure in which strip lines are joined and combined.

[0004]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. In FIGS. 1 to 3, 11 is a microstrip line in an antenna feeding circuit composed of a microstrip line, and 12 is a microstrip line for forming a triplate line together with the microstrip line 11. Reference numerals 13 and 14 are Teflon substrates for supporting the microstrip lines 11 and 12, respectively, and forming a triplet line. In addition, ground conductors (for example, solid earth made of copper foil) 16 and 17 are provided on the Teflon substrates 13 and 14, respectively. Reference numeral 15 denotes a connector (connector connected to the coaxial cable) as an input / output port of the antenna feeding circuit, and the tip of the connector is connected to the microstrip line 12.

In this way, the microstrip lines 11 and 12, the Teflon substrates 13 and 14, and the ground conductors 16 and 17 form a triplate line.

As shown in the disassembled state of the triplate line in FIG. 3, the microstrip line 12 is provided with respect to the structure (first Teflon substrate) including the microstrip line 11, the Teflon substrate 13, and the ground conductor 16. By joining a structure (second Teflon substrate) including the Teflon substrate 14, the ground conductor 17, and the connector 15, the connector can be attached without opening a square hole or the like in the antenna feeding circuit.

[0007]

[Effect of the device]

 As described above, according to the present invention, it is possible to mount a connector as an input / output port of an antenna feeding circuit composed of a microstrip line with a simple structure without making a hole in the substrate.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an antenna feeding circuit according to an embodiment of the present invention.

2 is a plan view of the embodiment of FIG.

FIG. 3 is an exploded sectional view showing the embodiment of FIG. 1 in an exploded manner.

FIG. 4 is a plan view showing a conventional antenna feeding circuit and a side view showing a connector mounting method.

[Explanation of symbols]

 11, 12 Microstrip line 13, 14 Teflon substrate 15 Connector 16, 17 Ground conductor

Claims (1)

[Scope of utility model registration request] 1. An antenna feeding circuit composed of microstrip lines used for an array antenna, wherein a first Teflon substrate provided with a microstrip line and a ground conductor on each of the front and back surfaces, and a microstrip on each of the front and back surfaces. An antenna feeding circuit, wherein a line and a ground conductor are provided, and a second Teflon substrate having a connector attached to the ground conductor is combined by joining the microstrip lines to each other.