JPH01113404U

JPH01113404U -

Info

Publication number: JPH01113404U
Application number: JP861288U
Authority: JP
Priority date: 1988-01-26
Filing date: 1988-01-26
Publication date: 1989-07-31
Anticipated expiration: 2003-01-26
Also published as: JPH055687Y2

Description

[Brief explanation of drawings]

第１図は、本考案の一実施例の要部を示す正面
図、第２図は側面図、第３図は背面図、第４図は
、本考案の他の実施例の要部を示す正面図、第５
図は背面図、第６図は、本案アンテナのインピー
ダンス特性の一例を示す図、第７図は、通常のプ
リントダイポールアンテナのインピーダンス特性
の一例を示す図、第８図及び第９図は、従来のア
ンテナを示す要部概略図で、１……誘電体基板、
２……ストリツプ導体、２_１及び２_２……帯状導
体、３……接地導体、４及び５……放射素子、６
_１及び６_２……折返し線路、７_１乃至７_４，８_１及び８_２……放射素子、Ｐ……給電点である。 Fig. 1 is a front view showing the main parts of one embodiment of the present invention, Fig. 2 is a side view, Fig. 3 is a rear view, and Fig. 4 is a main part of another embodiment of the invention. Front view, 5th
The figure is a rear view, FIG. 6 is a diagram showing an example of the impedance characteristics of the antenna of the present invention, FIG. 7 is a diagram showing an example of the impedance characteristics of a normal printed dipole antenna, and FIGS. This is a schematic diagram of main parts showing the antenna of 1... dielectric substrate,
2...Strip conductor, 2 ₁ and 2 ₂ ...Strip conductor, 3...Grounding conductor, 4 and 5...Radiating element, 6
₁ and 6 ₂ ... return track, 7 ₁ to 7 ₄ , 8 ₁ and 8 ₂ ... radiating element, P ... feeding point.

Claims

[Claims for Utility Model Registration] (1) Consisting of a metal coating deposited on the surface of a dielectric substrate, the upper edge of which is located approximately 1/4 below the resonant wavelength from the upper edge of the dielectric substrate. It consists of a strip conductor and a metal coating deposited on the surface of the dielectric substrate above the strip conductor. It consists of a plurality of radiating elements electrically connected to a strip conductor, and a metal coating deposited on the back surface of the dielectric substrate, the position of the upper edge approximately coincides with the position of the upper edge of the strip conductor, and , a grounding conductor provided parallel to the strip conductor, and a folded line made of a metal coating branched downward from both corners of the upper edge of the grounding conductor, and having a length of both folded lines. is selected to be approximately 1/4 of the intermediate wavelength between the longest resonant wavelength and the shortest resonant wavelength among the resonant wavelengths of the plurality of radiating elements. (2) A first layer consisting of a metal coating deposited on the surface of a dielectric substrate, the upper edge of which is located approximately 1/4 of the resonant wavelength below the upper edge of the dielectric substrate.
and a metal coating deposited on the surface of the dielectric substrate above the first band-shaped conductor, and are arranged in parallel with each other at appropriate intervals, and have different lengths. It consists of a plurality of radiating elements whose lower ends are electrically connected to the first strip-shaped conductor, and a metal coating deposited on the back surface of the dielectric substrate, and whose upper edge is located at the first strip-shaped conductor. A second band-shaped conductor that is substantially aligned with the position of the upper edge and parallel to the first band-shaped conductor, and a branched conductor that extends downward from both corners of the upper edge of the second band-shaped conductor. and a folded line made of a thin metal coating, and the length of both folded lines is approximately 1/4 of the wavelength between the longest resonant wavelength and the shortest resonant wavelength among the resonant wavelengths of the plurality of radiating elements. A wideband printed antenna characterized by being made of selected materials.