JPS61245705A - Flat antenna - Google Patents

Abstract

PURPOSE:To form the size of a microstrip line with high accuracy by sticking a printed board on which the microstrip line is printed by a conductive paint or a conductive adhesives to the surface of the dielectric base. CONSTITUTION:The printed board 4 on which the microstrip line 3 is printed by a conductive paint or a conductive adhesives is stuck to the surface of the dielectric base 2 stuck to the surface of the grounding conductor 1, and the microstrip line 3 is formed by printing. The microstrip line 3 on the printed board 4 is formed by printing the conductive paint or the conductive adhesives to the protection film 8, then no many processes such as printing, sticking, etching, rinsing and drying are not required in comparison with the forming of the microstrip line by means of the etching.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field 1 The present invention relates to a flat antenna used for microwave communications, satellite communications, and the like.

1 Background Art] As shown in FIG. 3, the antenna circuit board 6 constituting the planar antenna includes a microstrip line 7 and a protective film 8 for protecting the microstrip line 7.
The dielectric substrate 2 is laminated on the ground conductor 1 via the adhesive film 11, and the printed board 9 and the dielectric substrate 2 are bonded together by hot pressing and bonding with the adhesive film 10 and 11. And the conventional upward and protective film 8
The fabrication of the printed circuit board 9 formed by the microstrip lines 7 and 7 was carried out in the following manner. That is, a microstrip line antenna circuit is printed on a conductive metal foil such as copper foil or aluminum foil using rennost ink, and the printed conductive metal foil is pasted onto the protective film 8 by adhesive or the like, and then the conductive metal The foil is etched to form a micro-lip line 7 on one side of the protective film 8,
Finally, the printed board 9 is finished by cleaning.

In this way, the printed board 9 is created through many processes such as printing, laminating, etching, washing and drying, and the size of the microstrip line 7 that will form the antenna circuit is determined. ”No Nao No
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There was a problem that the manufacturing cost was high.

[Objective of the Invention J The present invention has been made in view of the above points, and an object of the present invention is to provide a planar antenna that can be produced by a simple manufacturing process and has a highly accurate microstrip line. This is the purpose.

[Disclosure of the Invention] In the planar antenna according to the present invention, microstrip lines 3 are printed and formed on the surface of a dielectric substrate 2 that is adhered to the surface of a ground conductor 1 using a conductive paint or a conductive adhesive. The present invention is characterized in that a printed board 4 is bonded to it, and the above object is achieved by forming the microstrip line 3 by printing.The present invention will be described in detail below with reference to Examples.

The printed board 4 is on one side of the protective film 8 (the inner side)
It is formed by providing a microstrip line 3 in the film, and a visible film such as polyethylene terephthalate can be used as the lubricant film 8, for example. Furthermore, the microstrip line 3 is formed by printing conductive paint or conductive adhesive such as silver paste or copper paste on the surface of the protective film 8, and screen printing or gravure printing is used as the printing method. However, it is not particularly limited to this.

As shown in FIG. 1, the printed board 4 thus formed is then bonded to a dielectric material made of a low dielectric constant 77-based resin (such as Teflon), polyethylene, etc. via an adhesive film 10 such as a urethane adhesive sheet. The adhesive films 10, 11 are stacked on the surface of the substrate 2, and then the dielectric substrate 2 is stacked on the surface of the ground conductor 1, such as an aluminum plate, via an adhesive film 11 such as a urethane adhesive sheet, and hot pressed. The ground conductor 1, dielectric substrate 2, and printed board 4 are laminated and bonded together to form an antenna circuit board 6 constituting a planar antenna as shown in FIG. 2.

In this device, the microstrip line 3 on the printed board 41 is created by printing conductive paint or conductive adhesive on the protective film 8, so the microstrip line 3 is formed by etching. Compared to those that create lines, printing, pasting,
It does not require multiple steps such as etching, washing and drying.

[Effects of the Invention] As described above, the present invention provides a printed board in which microstrip lines are printed with conductive paint or conductive adhesive on the surface of a dielectric substrate that is adhered to the surface of a ground conductor. Since the microstrip fins are glued together, microstrip fins on printed boards can be created by printing conductive paint or conductive adhesive, and microstrip lines can be created using conventional etching methods. In comparison, it does not require multiple processes such as printing, laminating, etching, washing and drying, and does not require large-scale microstripline manufacturing equipment (it is possible to reduce manufacturing costs). It is possible.

[Brief explanation of the drawing]

FIG. 1 is an exploded sectional view of one embodiment of the present invention, FIG. 2 is a perspective view of the same, and FIG. 3 is an exploded sectional view of a conventional example. 1 is a ground conductor, 2 is a dielectric substrate, 3 is a microstrip line, and 4 is a printed board.

Claims (1)

[Claims] (1) A planar antenna characterized in that a printed board on which microstrip lines are printed with conductive paint or conductive adhesive is adhered to the surface of a dielectric substrate that is adhered to the surface of a ground conductor.