JP3063472B2

JP3063472B2 - Antenna device

Info

Publication number: JP3063472B2
Application number: JP5199710A
Authority: JP
Inventors: 康司渡辺; 米彦砂原; 誠松永; 裕幸大嶺; 孝至片木
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1992-08-20
Filing date: 1993-08-11
Publication date: 2000-07-12
Anticipated expiration: 2015-07-12
Also published as: JPH06120729A

Description

DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】この発明は、ノッチアンテナの面
内に円偏波を放射・受信するアンテナ装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device for radiating and receiving circularly polarized waves in the plane of a notch antenna.

【０００２】[0002]

【従来の技術】図２３は例えば電子通信学会編「アンテ
ナ工学ハンドブック」（昭和５５年１０月３０日発
行）、７３ページに開示されたヘリカルアンテナであ
る。図において、１は放射導体、２は同軸線路、３は地
板である。2. Description of the Related Art FIG. 23 shows a helical antenna disclosed on page 73 of "Antenna Engineering Handbook" edited by the Institute of Electronics and Communication Engineers, published on October 30, 1980. In the figure, 1 is a radiation conductor, 2 is a coaxial line, and 3 is a ground plane.

【０００３】図２３に示すヘリカルアンテナにおいて、
ヘリカル導体である放射導体１の全長が波長に対して短
く、ヘリカルの直径をＤ、ヘリックス線路の間隔Ｓ、波
長λとした時に２Ｓλ＝（πＤ）２なる関係を満たすと
き（Ｗｈｅｅｌｅｒｈｅｌｉｘ）ヘリカル部に定在波
電流が流れ、地板を含む水平面内に円偏波を放射する。In the helical antenna shown in FIG.
When the total length of the radiating conductor 1 as a helical conductor is shorter than the wavelength, and the diameter of the helical is D, the interval S between the helical lines, and the wavelength λ, the relationship 2Sλ = (πD) 2 is satisfied (Wheeler helix). A standing wave current flows through the substrate and radiates a circularly polarized wave in a horizontal plane including the ground plane.

【０００４】[0004]

【発明が解決しようとする課題】従来のアンテナ装置は
ヘリカル導体の全長が波長に対して短く構成されている
ので、周波数帯域が非常に狭くかつアンテナ効率が低い
という問題点があった。The conventional antenna device has a problem in that the frequency band is very narrow and the antenna efficiency is low because the entire length of the helical conductor is configured to be shorter than the wavelength.

【０００５】この発明は上記のような問題点を解決する
ためになされたもので、アンテナ効率が高く周波数帯域
も広く水平面内に方向性を持たない円偏波放射特性を持
つアンテナを得ることを目的とする。The present invention has been made to solve the above problems, and an object of the present invention is to provide an antenna having a circularly polarized wave radiation characteristic having high antenna efficiency, a wide frequency band, and no directivity in a horizontal plane. Aim.

【０００６】[0006]

【課題を解決するための手段】請求項１のアンテナ装置
は、第一の面状導体と、上記第一の面状導体と概略平行
に対向させて配置された第二の面状導体と、上記第一の
面状導体と第二の面状導体を同電位とする接続導体と、
上記第一の面状導体と第二の面状導体の対応する位置に
放射状に形成され、一端が面状導体の縁部まで及ぶ開放
端とされた複数のスロットと、上記第一の面状導体と第
二の面状導体の間に、それぞれの面状導体と絶縁され、
上記複数のスロットのそれぞれを電磁結合により励振
し、上記複数のスロットの開放端から同相で電波を放射
させるように配置されたストリップ導体とを備えたノッ
チアンテナである第一のアンテナと、上記第一のアンテ
ナの放射する電波の偏波方向と略直交する偏波方向の電
波を上記第一のアンテナの存在する面内に放射するよう
上記第一の面状導体に略垂直に上記放射状に形成された
複数のスロットの中央部に配置されたモノポールアンテ
ナである第二のアンテナとを備え、上記第一のアンテナ
と第二のアンテナを上記第一のアンテナの面内に円偏波
を形成する概略９０度の位相差で励振することを特徴と
するものである。An antenna device according to a first aspect of the present invention includes a first planar conductor, and a second planar conductor arranged substantially parallel to and opposed to the first planar conductor. A connection conductor that makes the first planar conductor and the second planar conductor have the same potential,
A plurality of slots radially formed at corresponding positions of the first planar conductor and the second planar conductor, one end of which is an open end extending to an edge of the planar conductor; Between the conductor and the second planar conductor, insulated from each planar conductor,
A first antenna which is a notch antenna having a strip conductor arranged to excite each of the plurality of slots by electromagnetic coupling and to emit radio waves in the same phase from the open ends of the plurality of slots; and The radio wave is formed substantially perpendicularly to the first planar conductor so as to radiate a radio wave in a polarization direction substantially orthogonal to a polarization direction of a radio wave radiated by one antenna into a plane where the first antenna is present, in the radial shape. A second antenna that is a monopole antenna disposed in the center of the plurality of slots formed, the first antenna and the second antenna form a circularly polarized wave in the plane of the first antenna It is characterized in that it is excited with a phase difference of about 90 degrees.

【０００７】請求項２のアンテナ装置は、第一の面状導
体と、上記第一の面状導体と概略平行に対向させて配置
された第二の面状導体と、上記第一の面状導体と第二の
面状導体を同電位とする接続導体と、上記第一の面状導
体と第二の面状導体の対応する位置に放射状に形成さ
れ、一端が面状導体の縁部まで及ぶ開放端とされた複数
のスロットと、上記第一の面状導体と第二の面状導体の
間に、それぞれの面状導体と絶縁され、上記複数のスロ
ットのそれぞれを電磁結合により励振し、上記複数のス
ロットの開放端から同相で電波を放射させるように配置
されたストリップ導体とを備えたノッチアンテナである
第一のアンテナと、上記第一のアンテナの放射する電波
の偏波方向と略直交する偏波方向の電波を上記第一のア
ンテナの存在する面内に放射するよう上記第一の面状導
体に略垂直に上記複数のスロットのそれぞれの開放端の
近くにそれぞれ配置された複数のモノポールアンテナで
ある第二のアンテナと、上記第一の面状導体に略垂直に
上記放射状に形成された複数のスロットの中央部に配置
された上記モノポールアンテナの反射板とを備え、上記
第一のアンテナと第二のアンテナを上記第一のアンテナ
の面内に円偏波を形成する概略９０度の位相差で励振す
ることを特徴とするものである。According to a second aspect of the present invention, there is provided an antenna device comprising: a first planar conductor; a second planar conductor arranged substantially parallel to the first planar conductor so as to face the first planar conductor; A connection conductor having the same potential as the conductor and the second planar conductor, and the first planar conductor and the second planar conductor are radially formed at corresponding positions of the planar conductor, and one end is extended to the edge of the planar conductor. A plurality of slots that are open ends extending between the first planar conductor and the second planar conductor, and are insulated from the respective planar conductors, and each of the plurality of slots is excited by electromagnetic coupling. A first antenna that is a notch antenna having a strip conductor arranged to emit radio waves in phase from the open ends of the plurality of slots, and a polarization direction of radio waves emitted by the first antenna. A radio wave in a polarization direction substantially orthogonal to the plane where the first antenna is located A second antenna that is a plurality of monopole antennas respectively disposed near the respective open ends of the plurality of slots substantially perpendicular to the first planar conductor so as to radiate the first planar conductor; A reflector of the monopole antenna disposed at a central portion of the plurality of radially formed slots substantially perpendicular to a conductor, wherein the first antenna and the second antenna are provided on a surface of the first antenna. It is characterized in that it is excited with a phase difference of about 90 degrees which forms a circularly polarized wave.

【０００８】請求項３のアンテナ装置は、第一の面状導
体と、上記第一の面状導体と概略平行に対向させて配置
された第二の面状導体と、上記第一の面状導体と第二の
面状導体を同電位とする接続導体と、上記第一の面状導
体と第二の面状導体の対応する位置に放射状に形成さ
れ、一端が面状導体の縁部まで及ぶ開放端とされた複数
のスロットと、上記第一の面状導体と第二の面状導体の
間に、それぞれの面状導体と絶縁され、上記複数のスロ
ットのそれぞれを電磁結合により励振し、上記複数のス
ロットの開放端から同相で電波を放射させるように配置
されたストリップ導体とを備えたノッチアンテナである
第一のアンテナと、上記第一の面状導体と概略平行に配
置された第三の面状導体を放射導体、上記第一の面状導
体を地導体として形成され、同軸給電線路で高次モード
励振されて上記第一のアンテナの放射する電波の偏波方
向と略直交する偏波方向の電波を上記第一のアンテナの
存在する面内に放射するマイクロストリップアンテナで
ある第二のアンテナとを備え、上記第一のアンテナと第
二のアンテナを上記第一のアンテナの面内に円偏波を形
成する概略９０度の位相差で励振することを特徴とする
ものである。According to a third aspect of the present invention, there is provided the antenna device, wherein the first planar conductor, the second planar conductor arranged substantially in parallel with the first planar conductor, and the first planar conductor, A connection conductor having the same potential as the conductor and the second planar conductor, and the first planar conductor and the second planar conductor are radially formed at corresponding positions of the planar conductor, and one end is extended to the edge of the planar conductor. A plurality of slots that are open ends extending between the first planar conductor and the second planar conductor, and are insulated from the respective planar conductors, and each of the plurality of slots is excited by electromagnetic coupling. A first antenna which is a notch antenna including a strip conductor arranged to emit radio waves in phase from the open ends of the plurality of slots, and the first antenna is arranged substantially in parallel with the first planar conductor. The third planar conductor is a radiation conductor, and the first planar conductor is a ground conductor. A microstrip excited in a higher-order mode by a coaxial feed line and radiating a radio wave in a polarization direction substantially orthogonal to the polarization direction of the radio wave radiated by the first antenna into a plane in which the first antenna exists. A second antenna that is an antenna, wherein the first antenna and the second antenna are excited with a phase difference of about 90 degrees that forms a circularly polarized wave in the plane of the first antenna. Is what you do.

【０００９】請求項４のアンテナ装置は、第一の面状導
体と、上記第一の面状導体と概略平行に対向させて配置
された第二の面状導体と、上記第一の面状導体と第二の
面状導体を同電位とする接続導体と、上記第一の面状導
体と第二の面状導体の対応する位置に放射状に形成さ
れ、一端が面状導体の縁部まで及ぶ開放端とされた複数
のスロットと、上記第一の面状導体と第二の面状導体の
間に、それぞれの面状導体と絶縁され、上記複数のスロ
ットのそれぞれを電磁結合により励振し、上記複数のス
ロットの開放端から同相で電波を放射させるように配置
されたストリップ導体とを備えたノッチアンテナである
第一のアンテナと、上記第一のアンテナの放射する電波
の偏波方向と略直交する偏波方向の電波を上記第一のア
ンテナの存在する面内に放射するようそれぞれ上記第一
の面状導体および第二の面状導体に略垂直に上記第一の
面状導体および第二の面状導体の上記放射状に形成され
た複数のスロットの中央部に上記ストリップ導体の設け
られた面に対して対称に配置された２つのモノポールア
ンテナである第二のアンテナとを備え、上記第一のアン
テナと第二のアンテナを上記第一のアンテナの面内に円
偏波を形成する概略９０度の位相差で励振することを特
徴とするものである。According to a fourth aspect of the present invention, there is provided the antenna device, wherein the first planar conductor, the second planar conductor arranged substantially in parallel with the first planar conductor, and the first planar conductor are provided. A connection conductor having the same potential as the conductor and the second planar conductor, and the first planar conductor and the second planar conductor are radially formed at corresponding positions of the planar conductor, and one end is extended to the edge of the planar conductor. A plurality of slots that are open ends extending between the first planar conductor and the second planar conductor, and are insulated from the respective planar conductors, and each of the plurality of slots is excited by electromagnetic coupling. A first antenna that is a notch antenna having a strip conductor arranged to emit radio waves in phase from the open ends of the plurality of slots, and a polarization direction of radio waves emitted by the first antenna. A radio wave in a polarization direction substantially orthogonal to the plane where the first antenna is located A central portion of the plurality of radially formed slots of the first planar conductor and the second planar conductor substantially perpendicular to the first planar conductor and the second planar conductor, respectively; A second antenna which is two monopole antennas symmetrically arranged with respect to the plane on which the strip conductor is provided, and the first antenna and the second antenna are arranged on the surface of the first antenna. It is characterized in that it is excited with a phase difference of about 90 degrees which forms a circularly polarized wave.

【００１０】請求項５のアンテナ装置は、第一の面状導
体と、上記第一の面状導体と概略平行に対向させて配置
された第二の面状導体と、上記第一の面状導体と第二の
面状導体を同電位とする接続導体と、上記第一の面状導
体と第二の面状導体の対応する位置に放射状に形成さ
れ、一端が面状導体の縁部まで及ぶ開放端とされた複数
のスロットと、上記第一の面状導体と第二の面状導体の
間に、それぞれの面状導体と絶縁され、上記複数のスロ
ットのそれぞれを電磁結合により励振し、上記複数のス
ロットの開放端から同相で電波を放射させるように配置
されたストリップ導体とを備えたノッチアンテナ２台
を、互いに概略平行に対向させて配置した第一のアンテ
ナと、上記第一のアンテナの放射する電波の偏波方向と
略直交する偏波方向の電波を上記第一のアンテナの存在
する面に概略平行な面内に放射するよう上記ノッチアン
テナの存在する面に略垂直に上記２台のノッチアンテナ
の間の上記放射状に形成された複数のスロットの中央部
に配置されたモノポールアンテナである第二のアンテナ
とを備え、上記第一のアンテナと第二のアンテナを上記
第一のアンテナの存在する面に概略平行な面内に円偏波
を形成する概略９０度の位相差で励振することを特徴と
するものである。According to a fifth aspect of the present invention, there is provided the antenna device, wherein the first planar conductor, the second planar conductor arranged substantially in parallel with the first planar conductor, and the first planar conductor, A connection conductor having the same potential as the conductor and the second planar conductor, and the first planar conductor and the second planar conductor are radially formed at corresponding positions of the planar conductor, and one end is extended to the edge of the planar conductor. A plurality of slots that are open ends extending between the first planar conductor and the second planar conductor, and are insulated from the respective planar conductors, and each of the plurality of slots is excited by electromagnetic coupling. A first antenna in which two notch antennas each having a strip conductor arranged to emit radio waves in the same phase from the open ends of the plurality of slots are arranged so as to be substantially parallel to each other, and Of the direction of polarization that is approximately orthogonal to the A plurality of slots formed radially between the two notch antennas so as to radiate a wave in a plane substantially parallel to the plane where the first antenna is located, and substantially perpendicular to the plane where the notch antennas are located; A second antenna that is a monopole antenna disposed in the center of the antenna, and the first antenna and the second antenna are circularly polarized in a plane substantially parallel to a plane in which the first antenna exists. Are excited with a phase difference of about 90 degrees.

【００１１】請求項６のアンテナ装置は、第一の面状導
体と、上記第一の面状導体と概略平行に対向させて配置
された第二の面状導体と、上記第一の面状導体と第二の
面状導体を同電位とする接続導体と、上記第一の面状導
体と第二の面状導体の対応する位置に放射状に形成さ
れ、一端が面状導体の縁部まで及ぶ開放端とされた複数
のスロットと、上記第一の面状導体と第二の面状導体の
間に、それぞれの面状導体と絶縁され、上記複数のスロ
ットのそれぞれを電磁結合により励振し、上記複数のス
ロットの開放端から同相で電波を放射させるように配置
されたストリップ導体とを備えたノッチアンテナである
第一のアンテナと、上記第一の面状導体を放射導体、上
記第二の面状導体を地導体として形成され、上記第一の
面状導体の上記放射状に形成された複数のスロットの中
央部に内導体、上記第二の面状導体に外導体を接続した
同軸給電線路で成る上記第一の面状導体と第二の面状導
体間に電界を励振させる励振手段を有し、上記第一のア
ンテナの放射する電波の偏波方向と略直交する偏波方向
の電波を上記第一のアンテナの存在する面内に放射する
マイクロストリップアンテナである第二のアンテナとを
備え、上記第一のアンテナと第二のアンテナを上記第一
のアンテナの面内に円偏波を形成する概略９０度の位相
差で励振することを特徴とするものである。According to a sixth aspect of the present invention, there is provided the antenna device, wherein the first planar conductor, the second planar conductor arranged substantially in parallel with the first planar conductor and facing the first planar conductor, and the first planar conductor A connection conductor having the same potential as the conductor and the second planar conductor, and the first planar conductor and the second planar conductor are radially formed at corresponding positions of the planar conductor, and one end is extended to the edge of the planar conductor. A plurality of slots that are open ends extending between the first planar conductor and the second planar conductor, and are insulated from the respective planar conductors, and each of the plurality of slots is excited by electromagnetic coupling. A first antenna that is a notch antenna having a strip conductor arranged to emit radio waves in phase from the open ends of the plurality of slots, a first antenna that is a notch antenna, a radiation conductor, Is formed as a ground conductor, and the radiation of the first planar conductor is An electric field is applied between the first planar conductor and the second planar conductor formed of a coaxial feed line in which an inner conductor is connected to the center of the plurality of slots formed in the second planar conductor and an outer conductor is connected to the second planar conductor. A microstrip antenna having excitation means for exciting, and radiating a radio wave in a polarization direction substantially orthogonal to the polarization direction of the radio wave radiated by the first antenna into a plane in which the first antenna exists. A second antenna, wherein the first antenna and the second antenna are excited with a phase difference of about 90 degrees that forms a circularly polarized wave in the plane of the first antenna. .

【００１２】請求項７のアンテナ装置は、第一の面状導
体と、上記第一の面状導体と概略平行に対向させて配置
された第二の面状導体と、上記第一の面状導体と第二の
面状導体の対応する位置に放射状に形成され、一端が面
状導体の縁部まで及ぶ開放端とされた複数のスロット
と、上記第一の面状導体と第二の面状導体の間に、それ
ぞれの面状導体と絶縁され、上記複数のスロットのそれ
ぞれを電磁結合により励振し、上記複数のスロットの開
放端から同相で電波を放射させるように配置されたスト
リップ導体とを備えたノッチアンテナから成り、上記第
一の面状導体と第二の面状導体の間に生じる電位差によ
り発生し、上記ノッチアンテナの存在する面内に放射さ
れる上記電波の偏波方向と略直交する偏波方向成分の電
波を利用し、上記ノッチアンテナの存在する面内に円偏
波を形成することを特徴とするものである。According to a seventh aspect of the present invention, there is provided the antenna device, wherein the first planar conductor, the second planar conductor arranged substantially in opposition to the first planar conductor, and the first planar conductor; A plurality of slots radially formed at corresponding positions of the conductor and the second planar conductor, one end of which is an open end extending to an edge of the planar conductor, the first planar conductor and the second surface A strip conductor that is insulated from each planar conductor between the conductors, excites each of the plurality of slots by electromagnetic coupling, and emits radio waves in the same phase from the open ends of the plurality of slots. The notch antenna with a, generated by the potential difference between the first planar conductor and the second planar conductor, the polarization direction of the radio wave radiated in the plane where the notch antenna exists and Utilizing radio waves of polarization components that are substantially orthogonal, It is characterized in that to form the present circularly polarized wave in a plane of Chiantena.

【００１３】請求項８のアンテナ装置は、第一の誘電体
基板に設けられた第一の面状導体と、上記第一の誘電体
基板と厚みの異なる第二の誘電体基板に設けられ、上記
第一の誘電体基板と第二の誘電体基板を対面させて上記
第一の面状導体と概略平行に配置された第二の面状導体
と、上記第一の面状導体と第二の面状導体を同電位とす
る接続導体と、上記第一の面状導体と第二の面状導体の
対応する位置に放射状に形成され、一端が面状導体の縁
部まで及ぶ開放端とされた複数のスロットと、上記第一
の誘電体基板と第二の誘電体基板の間に、上記複数のス
ロットのそれぞれを電磁結合により励振し、上記複数の
スロットの開放端から同相で電波を放射させるように配
置されたストリップ導体とを備えたノッチアンテナから
成り、上記第一の誘電体基板と第二の誘電体基板の厚み
が異なることによる励振条件の非対称性により発生し、
上記ノッチアンテナの存在する面内に放射される上記電
波の偏波方向と略直交する偏波方向成分の電波を利用
し、上記ノッチアンテナの存在する面内に円偏波を形成
することを特徴とするものである。An antenna device according to an eighth aspect of the present invention is provided on a first planar conductor provided on a first dielectric substrate, and on a second dielectric substrate having a different thickness from the first dielectric substrate, A second planar conductor arranged so as to be substantially parallel to the first planar conductor with the first dielectric substrate and the second dielectric substrate facing each other, and the first planar conductor and the second planar conductor. A connection conductor having the same planar conductor as the same potential, an open end formed radially at a corresponding position of the first planar conductor and the second planar conductor, and having one end reaching the edge of the planar conductor. The plurality of slots, and between the first dielectric substrate and the second dielectric substrate, each of the plurality of slots is excited by electromagnetic coupling, and radio waves are transmitted in phase from the open ends of the plurality of slots. A notch antenna with a strip conductor arranged to radiate, Generated by the asymmetry of the excitation conditions by different it is collector substrate and the second dielectric thickness of the substrate,
It is characterized in that a circularly polarized wave is formed in a plane where the notch antenna exists by using a radio wave of a polarization direction component substantially orthogonal to a polarization direction of the radio wave radiated in a plane where the notch antenna exists. It is assumed that.

【００１４】請求項９のアンテナ装置は、第一の面状導
体と、上記第一の面状導体と概略平行に対向させて配置
された第二の面状導体と、上記第一の面状導体と第二の
面状導体を同電位とする接続導体と、上記第一の面状導
体と第二の面状導体の対応する位置に放射状に形成さ
れ、一端が面状導体の縁部まで及ぶ開放端とされた複数
のスロットと、上記第一の面状導体と第二の面状導体の
間に、それぞれの面状導体と絶縁され、上記複数のスロ
ットのそれぞれを電磁結合により励振し、上記複数のス
ロットの開放端から同相で電波を放射させるように配置
されたストリップ導体とを備えたノッチアンテナである
第一のアンテナと、上記第一のアンテナの放射する電波
の偏波方向と略直交する偏波方向の電波を上記第一のア
ンテナの存在する面内に放射するよう上記第一の面状導
体に略垂直に上記第一の面状導体側の上記放射状に形成
された複数のスロットの中央部に配置され、同軸線路の
グランド側導体から引き続き折り返され、電気的な長さ
を概略１／４波長とする位置で開放終端するスカートが
上記第二の面状導体へ至る手前の位置に設けられた同軸
線路で上記第二の面状導体側から給電されたモノポール
アンテナである第二のアンテナとを備え、上記第一のア
ンテナと第二のアンテナを上記第一のアンテナの面内に
円偏波を形成する概略９０度の位相差で励振することを
特徴とするものである。According to a ninth aspect of the present invention, there is provided the antenna device, wherein the first planar conductor, the second planar conductor disposed substantially in parallel with the first planar conductor, and the first planar conductor, A connection conductor having the same potential as the conductor and the second planar conductor, and the first planar conductor and the second planar conductor are radially formed at corresponding positions of the planar conductor, and one end is extended to the edge of the planar conductor. A plurality of slots that are open ends extending between the first planar conductor and the second planar conductor, and are insulated from the respective planar conductors, and each of the plurality of slots is excited by electromagnetic coupling. A first antenna that is a notch antenna having a strip conductor arranged to emit radio waves in phase from the open ends of the plurality of slots, and a polarization direction of radio waves emitted by the first antenna. A radio wave in a polarization direction substantially orthogonal to the plane where the first antenna is located The first planar conductor is disposed substantially perpendicularly to the first planar conductor at the center of the plurality of radially formed slots on the first planar conductor side, and is continuously folded back from the ground-side conductor of the coaxial line. A skirt that terminates open at a position where the electrical length is approximately 1/4 wavelength is supplied from the second planar conductor side by a coaxial line provided at a position just before reaching the second planar conductor. A second antenna that is a monopole antenna, and excites the first antenna and the second antenna with a phase difference of about 90 degrees that forms a circularly polarized wave in the plane of the first antenna. It is characterized by the following.

【００１５】[0015]

【作用】請求項１のアンテナ装置においては、放射状に
形成された一端開放の複数のスロットを有し、対称に形
成されたノッチアンテナから成る第一のアンテナと、上
記第一のアンテナの放射する電波の偏波方向と略直交す
る偏波方向の電波をノッチアンテナの面内に放射するよ
う配置された第二のアンテナとを備え、上記第一のアン
テナと第二のアンテナを上記面内に円偏波を形成する概
略９０度の位相差で励振するので、ノッチアンテナの面
内に方向性を持たない円偏波放射特性を持つアンテナ装
置を得られる。According to the antenna device of the first aspect, a first antenna having a plurality of slots formed radially and having one end open and comprising a notch antenna formed symmetrically, and the first antenna radiates. A second antenna arranged to radiate radio waves in a polarization direction substantially orthogonal to the polarization direction of the radio waves in the plane of the notch antenna, and the first antenna and the second antenna are arranged in the plane. Since the excitation is performed with a phase difference of about 90 degrees forming a circularly polarized wave, an antenna device having a circularly polarized wave radiation characteristic having no directivity in the plane of the notch antenna can be obtained.

【００１６】請求項２のアンテナ装置においては、放射
状に形成された一端開放の複数のスロットを有し、対称
に形成されたノッチアンテナから成る第一のアンテナ
と、上記第一のアンテナの放射する電波の偏波方向と略
直交する偏波方向の電波をノッチアンテナの面内に放射
する放射部が上記複数のスロットのそれぞれの開放端の
近くに配置された複数の第二のアンテナと、反射板とを
備え、上記第一のアンテナと第二のアンテナを上記面内
に円偏波を形成する概略９０度の位相差で励振するの
で、ノッチアンテナの面に直交する面内での設定位相の
ずれを低減でき、ノッチアンテナの面内において無指向
性の垂直偏波を生じるので、ノッチアンテナの面に直交
する面内での円偏波放射特性の劣化が低減されたアンテ
ナ装置を得られる。According to a second aspect of the present invention, there is provided a first antenna having a plurality of symmetrically formed notch antennas having a plurality of radially-opened one-end open slots, and radiating the first antenna. A plurality of second antennas arranged near the open end of each of the plurality of slots have a radiating portion for radiating radio waves in a polarization direction substantially orthogonal to the polarization direction of the radio waves in the plane of the notch antenna, and Plate, and the first antenna and the second antenna are excited with a phase difference of about 90 degrees forming a circular polarization in the plane, so that a set phase in a plane perpendicular to the plane of the notch antenna is set. Deviation can be reduced, and omni-directional vertical polarization occurs in the plane of the notch antenna, so that an antenna device with reduced deterioration of circularly polarized wave radiation characteristics in a plane orthogonal to the plane of the notch antenna can be obtained. .

【００１７】請求項３のアンテナ装置においては、放射
状に形成された一端開放の複数のスロットを有し、対称
に形成されたノッチアンテナから成る第一のアンテナ
と、第一のアンテナの第一の面状導体と概略平行に対向
させて配置された第三の面状導体と、上記第一の面状導
体を地導体として形成され、上記第一のアンテナの放射
する電波の偏波方向と略直交する偏波方向の電波を上記
第一のアンテナの存在する面内に放射するマイクロスト
リップアンテナである第二のアンテナとを備え、上記第
一のアンテナと第二のアンテナを上記面内に円偏波を形
成する概略９０度の位相差で励振するので、ノッチアン
テナの面内に方向性を持たない円偏波放射特性を持つ平
板なアンテナ装置を得られる。In the antenna device of the third aspect, a first antenna having a plurality of slots formed radially and having one end open and comprising a notch antenna formed symmetrically, and a first antenna of the first antenna. A third planar conductor arranged so as to be substantially parallel to and opposed to the planar conductor, the first planar conductor is formed as a ground conductor, and the polarization direction of a radio wave radiated by the first antenna is substantially the same as the polarization direction. A second antenna that is a microstrip antenna that radiates radio waves in the orthogonal polarization direction to the plane where the first antenna is located, and the first antenna and the second antenna are circularly arranged in the plane. Since the excitation is performed with a phase difference of about 90 degrees that forms a polarized wave, a flat antenna device having a circularly polarized wave radiation characteristic having no directivity in the plane of the notch antenna can be obtained.

【００１８】請求項４のアンテナ装置においては、第一
の面状導体と、上記第一の面状導体と概略平行に対向さ
せて配置された第二の面状導体と、上記第一の面状導体
と第二の面状導体の対応する位置に放射状に形成され、
一端が面状導体の縁部まで及ぶ開放端とされた複数のス
ロットと、上記第一の面状導体と第二の面状導体の間
に、それぞれの面状導体と絶縁され、上記複数のスロッ
トのそれぞれを電磁結合により励振し、上記複数のスロ
ットの開放端から同相で電波を放射させるように配置さ
れたストリップ導体とを備えた第一のアンテナと、上記
第一のアンテナの放射する電波の偏波方向と略直交する
偏波方向の電波を上記第一のアンテナの存在する面内に
放射するよう上記ストリップ導体の設けられた面に対し
て対称に配置された複数の第二のアンテナとを備え、上
記第一のアンテナと第二のアンテナを上記面内に円偏波
を形成する概略９０度の位相差で励振するので、第一の
アンテナの面に直交する面内の放射特性の良い円偏波放
射特性を持つアンテナ装置を得られる。In the antenna device according to a fourth aspect of the present invention, the first planar conductor, the second planar conductor arranged substantially in parallel with the first planar conductor, and the first planar conductor, Is formed radially at a corresponding position of the second conductor and the second conductor,
A plurality of slots, one end of which is an open end extending to the edge of the planar conductor, between the first planar conductor and the second planar conductor, are insulated from the respective planar conductors, and A first antenna having a strip conductor arranged to excite each of the slots by electromagnetic coupling and to emit radio waves in the same phase from the open ends of the plurality of slots; and a radio wave emitted by the first antenna. A plurality of second antennas symmetrically arranged with respect to the plane on which the strip conductor is provided so as to radiate radio waves in a polarization direction substantially orthogonal to the polarization direction of the first antenna. And the first antenna and the second antenna are excited with a phase difference of about 90 degrees forming a circularly polarized wave in the plane, so that radiation characteristics in a plane orthogonal to the plane of the first antenna are provided. With good circularly polarized radiation characteristics It obtained the equipment.

【００１９】請求項５のアンテナ装置においては、放射
状に形成された一端開放の複数のスロットを有し、対称
に形成されたノッチアンテナから成り、互いに概略平行
に配置された２台の第一のアンテナと、上記第一のアン
テナの放射する電波の偏波方向と略直交する偏波方向の
電波を上記第一のアンテナの存在する面に概略平行な面
内に放射するよう上記２台の第一のアンテナの間に配置
された第二のアンテナとを備え、上記第一のアンテナと
第二のアンテナを上記面内に円偏波を形成する概略９０
度の位相差で励振するので、第一のアンテナの面に直交
する面内の放射特性の良い円偏波放射特性を持つアンテ
ナ装置を得られる。According to a fifth aspect of the present invention, there is provided an antenna apparatus comprising a plurality of radially formed open-ended slots, notch antennas formed symmetrically, and two first notches arranged substantially parallel to each other. An antenna, and the two first antennas radiating a radio wave in a polarization direction substantially orthogonal to the polarization direction of the radio wave radiated by the first antenna in a plane substantially parallel to a plane in which the first antenna exists. A second antenna disposed between one antenna, and the first antenna and the second antenna forming a circular polarization in the plane.
Since excitation is performed with a phase difference of degrees, an antenna device having good circularly polarized wave radiation characteristics in a plane orthogonal to the plane of the first antenna can be obtained.

【００２０】請求項６のアンテナ装置においては、第一
のアンテナと、上記第一のアンテナの第一の面状導体と
第二の面状導体間に電界を励振させる励振手段を有し、
上記第一のアンテナの放射する電波の偏波方向と略直交
する偏波方向の電波を上記第一のアンテナの存在する面
内に放射するマイクロストリップアンテナである第二の
アンテナとを備え、上記第一のアンテナと第二のアンテ
ナを上記面内に円偏波を形成する概略９０度の位相差で
励振するので、第一のアンテナと第二のアンテナを共通
の構造で形成でき、小形の平板なアンテナ装置を得られ
る。The antenna device according to the present invention has a first antenna and excitation means for exciting an electric field between the first planar conductor and the second planar conductor of the first antenna.
A second antenna that is a microstrip antenna that radiates radio waves in a polarization direction substantially orthogonal to the polarization direction of the radio waves radiated by the first antenna into a plane in which the first antenna is present, Since the first antenna and the second antenna are excited with a phase difference of about 90 degrees that forms a circularly polarized wave in the plane, the first antenna and the second antenna can be formed with a common structure, and small-sized. A flat antenna device can be obtained.

【００２１】請求項７のアンテナ装置においては、放射
状に形成された一端開放の複数のスロットを有し、対称
に形成されたノッチアンテナから成る第一のアンテナに
おいて、第一の面状導体と第二の面状導体を同電位とす
る接続導体を用いていないため、上記第一の面状導体と
第二の面状導体の間に電位差が生じることにより、上記
ノッチアンテナの主偏波方向と略直交する偏波方向成分
の電波を上記ノッチアンテナの存在する面内に放射さ
せ、上記面内に円偏波を形成するので、ノッチアンテナ
のみでその面内に方向性を持たない円偏波放射特性を持
つアンテナ装置を得られる。According to a seventh aspect of the present invention, in the first antenna comprising a plurality of symmetrically formed notch antennas having a plurality of radially formed slots with one end open, a first planar conductor and a second Since the connection conductor having the same potential as the two planar conductors is not used, a potential difference is generated between the first planar conductor and the second planar conductor, and the main polarization direction of the notch antenna and A substantially orthogonal polarization direction component is radiated in the plane where the notch antenna is present, and circular polarization is formed in the plane. Therefore, only the notch antenna has no directionality in the plane. An antenna device having radiation characteristics can be obtained.

【００２２】請求項８のアンテナ装置においては、第一
の誘電体基板に設けられた第一の面状導体と、上記第一
の誘電体基板と厚みの異なる第二の誘電体基板に設けら
れ、上記第一の誘電体基板と第二の誘電体基板を対面さ
せて上記第一の面状導体と概略平行に配置された第二の
面状導体と、上記第一の面状導体と第二の面状導体を同
電位とする接続導体と、上記第一の面状導体と第二の面
状導体の対応する位置に放射状に形成され、一端が面状
導体の縁部まで及ぶ開放端とされた複数のスロットと、
上記第一の誘電体基板と第二の誘電体基板の間に、上記
複数のスロットのそれぞれを電磁結合により励振し、上
記複数のスロットの開放端から同相で電波を放射させる
ように配置されたストリップ導体とを備えたノッチアン
テナから成り、上記第一の誘電体基板と第二の誘電体基
板の厚みが異なることによる励振条件の非対称性により
発生し、上記ノッチアンテナの存在する面内に放射され
る上記電波の偏波方向と略直交する偏波方向成分の電波
を利用し、ノッチアンテナの存在する面内に円偏波を形
成するので、ノッチアンテナのみでその面内に方向性を
持たない円偏波放射特性を持つアンテナ装置を得ること
ができる。In the antenna device of the present invention, the first planar conductor provided on the first dielectric substrate and the second dielectric substrate having a thickness different from that of the first dielectric substrate are provided. A second planar conductor that is arranged substantially parallel to the first planar conductor with the first dielectric substrate and the second dielectric substrate facing each other, and the first planar conductor and A connection conductor having the same potential as the two planar conductors, and an open end radially formed at a corresponding position between the first planar conductor and the second planar conductor and having one end reaching the edge of the planar conductor. And multiple slots
Between the first dielectric substrate and the second dielectric substrate, each of the plurality of slots is excited by electromagnetic coupling, and arranged so as to emit radio waves in the same phase from the open ends of the plurality of slots. A notch antenna having a strip conductor, which is generated due to asymmetry of the excitation condition due to the difference in thickness between the first dielectric substrate and the second dielectric substrate, and radiates in a plane where the notch antenna exists. Utilizing a radio wave of a polarization direction component substantially orthogonal to the polarization direction of the radio wave to be formed, a circularly polarized wave is formed in a plane where the notch antenna exists, so that only the notch antenna has directivity in the plane. An antenna device having no circularly polarized radiation characteristics can be obtained.

【００２３】請求項９のアンテナ装置においては、第一
の面状導体と、上記第一の面状導体と概略平行に対向さ
せて配置された第二の面状導体と、上記第一の面状導体
と第二の面状導体を同電位とする接続導体と、上記第一
の面状導体と第二の面状導体の対応する位置に放射状に
形成され、一端が面状導体の縁部まで及ぶ開放端とされ
た複数のスロットと、上記第一の面状導体と第二の面状
導体の間に、それぞれの面状導体と絶縁され、上記複数
のスロットのそれぞれを電磁結合により励振し、上記複
数のスロットの開放端から同相で電波を放射させるよう
に配置されたストリップ導体とを備えたノッチアンテナ
である第一のアンテナと、上記第一のアンテナの放射す
る電波の偏波方向と略直交する偏波方向の電波を上記第
一のアンテナの存在する面内に放射するよう上記第一の
面状導体に略垂直に上記第一の面状導体側の上記放射状
に形成された複数のスロットの中央部に配置され、同軸
線路のグランド側導体から引き続き折り返され、電気的
な長さを概略１／４波長とする位置で開放終端するスカ
ートが上記第二の面状導体へ至る手前の位置に設けられ
た同軸線路で上記第二の面状導体側から給電されたモノ
ポールアンテナである第二のアンテナとを備え、上記第
一のアンテナと第二のアンテナを上記第一のアンテナの
面内に円偏波を形成する概略９０度の位相差で励振する
ので、上記第一のアンテナの面に対する垂直方向の対称
性が良く、第一のアンテナの面に直交する面内の放射特
性の良い円偏波放射特性を持つアンテナ装置を得られ
る。In the antenna device according to the ninth aspect, the first planar conductor, the second planar conductor arranged substantially in parallel with the first planar conductor, and the first planar conductor, Connecting conductors having the same potential as the planar conductor and the second planar conductor, and radially formed at corresponding positions of the first planar conductor and the second planar conductor, one end of which is an edge of the planar conductor. A plurality of slots, each of which has an open end extending between the first and second planar conductors, are insulated from the respective planar conductors, and each of the plurality of slots is excited by electromagnetic coupling. A first antenna which is a notch antenna having a strip conductor arranged to emit radio waves in the same phase from the open ends of the plurality of slots, and a polarization direction of the radio waves radiated by the first antenna; Radio waves in the polarization direction substantially orthogonal to It is arranged in the center of the plurality of radially formed slots on the first planar conductor side substantially perpendicular to the first planar conductor so as to radiate in a plane to be radiated from the ground side conductor of the coaxial line. The second planar conductor is a coaxial line provided with a skirt that is folded back and has a skirt that terminates open at a position where the electrical length is approximately 波長 wavelength and that is provided before the second planar conductor. A second antenna which is a monopole antenna fed from the side, and the first antenna and the second antenna form a phase difference of about 90 degrees forming a circularly polarized wave in the plane of the first antenna. , The symmetry in the vertical direction with respect to the surface of the first antenna is good, and an antenna device having good circularly polarized radiation characteristics in a plane perpendicular to the surface of the first antenna can be obtained.

【００２４】[0024]

【実施例】実施例１以下、この発明に係わるアンテナ装置の一実施例を図に
よって説明する。図１はアンテナ装置の斜視図である。
図２は図１のＡ−Ａにおける断面図である。図３はアン
テナ装置の構成を示すための分解図である。図において
４は第二のアンテナであるモノポールアンテナであり、
以下は第一のアンテナである。５は上面にある第一の導
体、６ａ〜６ｄは導体の各辺上にある一端を導体端部ま
で延長し開放端にするとともに一端を短絡したスロッ
ト、７は誘電体、８は誘電体、９は下面にある第二の導
体、１０は同軸線路で給電するときの同軸線路をトリプ
レート線路に変換するために第一の導体と第二の導体を
同電位にするための導体、１１ａ〜１１ｄは下面の導体
９の各辺上にある一端を導体端部まで延長し開放端にす
るとともに一端を短絡したスロット、１２ａ〜１２ｄは
スロット６ａ〜６ｄ，１１ａ〜１１ｄに給電するストリ
ップ線路、１３はストリップ線路の給電点である。Embodiment 1 An embodiment of an antenna device according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the antenna device.
FIG. 2 is a sectional view taken along line AA of FIG. FIG. 3 is an exploded view showing the configuration of the antenna device. In the figure, 4 is a monopole antenna which is a second antenna,
The following is the first antenna. 5 is a first conductor on the upper surface, 6a to 6d are slots in which one end on each side of the conductor is extended to the conductor end to make it an open end and one end is short-circuited, 7 is a dielectric, 8 is a dielectric, 9 is a second conductor on the lower surface, 10 is a conductor for making the first conductor and the second conductor have the same potential in order to convert a coaxial line into a triplate line when power is supplied by the coaxial line, and 11a to 11a to 11d is a slot in which one end on each side of the conductor 9 on the lower surface is extended to the conductor end to be an open end and one end is short-circuited, 12a to 12d are strip lines for supplying power to the slots 6a to 6d and 11a to 11d, 13 Is a feed point of the strip line.

【００２５】図４は同軸線路で給電する時の構成を示す
図であり、図１のＢ−Ｂにおける断面図である。図４に
おいて１４はモノポールアンテナに給電するための同軸
線路、１５は内導体、１６はモノポールアンテナの給電
点である。１７はストリップ線路を給電するための同軸
線路、１８は内導体である。３７は同軸線路１４，１７
に電力を分配する分配器、３８はこのアンテナ装置に電
力を供給する同軸線路である。誘電体７の一面に第一の
導体５があり、他の面にストリップ線路１２ａ〜１２ｄ
が設けられ、ストリップ線路１２ａ〜１２ｄは誘電体８
の一面にあり、誘電体８の他の面には第二の導体９が設
けられていて第一の導体５と第二の導体９は同じ形状を
していてかつ、概略平行に配置されている。また、スロ
ット６ａ〜６ｄ，１１ａ〜１１ｄは対向して設けられて
いる。FIG. 4 is a diagram showing a configuration when power is supplied by a coaxial line, and is a cross-sectional view taken along line BB of FIG. In FIG. 4, 14 is a coaxial line for feeding power to the monopole antenna, 15 is an inner conductor, and 16 is a feeding point of the monopole antenna. Reference numeral 17 denotes a coaxial line for feeding a strip line, and reference numeral 18 denotes an inner conductor. 37 is the coaxial line 14, 17
And a coaxial line 38 for supplying power to the antenna device. The first conductor 5 is provided on one surface of the dielectric 7, and the strip lines 12a to 12d are provided on the other surface.
Are provided, and the strip lines 12a to 12d
The second conductor 9 is provided on the other surface of the dielectric 8, and the first conductor 5 and the second conductor 9 have the same shape and are arranged substantially in parallel. I have. The slots 6a to 6d and 11a to 11d are provided to face each other.

【００２６】次に動作について説明する。このアンテナ
装置は第一のアンテナが第一の導体５、第二の導体９、
スロット６ａ〜６ｄおよび１１ａ〜１１ｄ、ストリップ
線路１２ａ〜１２ｄ及び、誘電体７，８より構成されて
おりトリプレート構造となっている。したがって同軸線
路３８から分配器３７により分配された電力はストリッ
プ線路１２ａ〜１２ｄを介してスロット６ａ〜６ｄ，１
１ａ〜１１ｄ々へ電磁結合されスロット間に電界を生じ
スロット６ａ〜６ｄ，１１ａ〜１１ｄが設けられている
水平面内へ放射される。ストリップ線路１２ａ〜１２ｄ
の線路長は等しい。これより、各結合点において同相と
なり上記水平面内において無指向性の水平偏波を生じ
る。第二のアンテナであるモノポールアンテナ４は同軸
線路３８から分配器３７により分配された電力を上記水
平面内へ放射し無指向性の垂直偏波を生じる。したがっ
て、上記ストリップ線路１２ａ〜１２ｄの長さを調整し
て上記第一のアンテナと上記第二のアンテナから放射す
る電波の位相に９０度の差をつけることにより水平面内
に無指向性の円偏波特性を生じる。Next, the operation will be described. In this antenna device, the first antenna has a first conductor 5, a second conductor 9,
Slots 6a to 6d and 11a to 11d, strip lines 12a to 12d, and dielectrics 7 and 8 form a triplate structure. Therefore, the power distributed from the coaxial line 38 by the distributor 37 is transmitted to the slots 6a to 6d, 1 via the strip lines 12a to 12d.
Electromagnetically coupled to each of the slots 1a to 11d, an electric field is generated between the slots and radiated into a horizontal plane provided with the slots 6a to 6d and 11a to 11d. Strip lines 12a to 12d
Are equal. As a result, in-phase occurs at each coupling point, and omnidirectional horizontal polarization occurs in the horizontal plane. The monopole antenna 4, which is the second antenna, radiates the electric power distributed by the distributor 37 from the coaxial line 38 into the horizontal plane to generate omnidirectional vertical polarization. Therefore, by adjusting the lengths of the strip lines 12a to 12d to give a phase difference of 90 degrees between the radio waves radiated from the first antenna and the second antenna, a non-directional circularly polarized Generates wave characteristics.

【００２７】実施例２図５はこの発明に係るアンテナ装置の他の実施例であ
り、図６は同軸線路で給電する時の構成を示す図であ
り、図５のＣ−Ｃ断面図である。図中、１９ａ〜１９ｄ
はモノポールアンテナ、２０は反射板、２１はモノポー
ルアンテナ１９ｄを給電するための同軸線路、２２は内
導体、２３は給電点、２４はモノポールアンテナ１９ｂ
を給電するための同軸線路、２５は内導体、２６は給電
点である。上記実施例１の第二のアンテナをモノポール
アンテナとしてモノポールアンテナ１９ａ〜１９ｄ及
び、反射板２０を用いた実施例である。図において同記
号は同じものを示す。また、第一のアンテナの構造は実
施例１と同じである。Embodiment 2 FIG. 5 shows another embodiment of the antenna device according to the present invention. FIG. 6 is a diagram showing a configuration when power is supplied by a coaxial line, and is a cross-sectional view taken along the line CC of FIG. . In the figure, 19a to 19d
Is a monopole antenna, 20 is a reflector, 21 is a coaxial line for feeding a monopole antenna 19d, 22 is an inner conductor, 23 is a feeding point, and 24 is a monopole antenna 19b.
, 25 is an inner conductor, and 26 is a feeding point. This is an embodiment using the monopole antennas 19a to 19d and the reflector 20 as the second antenna of the first embodiment as a monopole antenna. In the figures, the same symbols indicate the same items. The structure of the first antenna is the same as that of the first embodiment.

【００２８】次に動作について説明する。第二の導体９
の中心はストリップ線路１２ａ〜１２ｄの給電点１３が
あるため実施例１のようにモノポールアンテナ４を給電
すると水平面において対称性がくずれる。そのためモノ
ポールアンテナ１９ａ〜１９ｄ及び、反射板２０を設け
ることにより水平面内において無指向性の垂直偏波を生
じる。他は実施例１と同じである。Next, the operation will be described. Second conductor 9
Is located at the feed point 13 of the strip lines 12a to 12d, so that feeding the monopole antenna 4 as in the first embodiment breaks the symmetry in the horizontal plane. Therefore, by providing the monopole antennas 19a to 19d and the reflector 20, omnidirectional vertical polarization occurs in a horizontal plane. Others are the same as the first embodiment.

【００２９】実施例３図７はこの発明に係るアンテナ装置の他の実施例であ
り、図８は同軸線路で給電する時の構成を示す図であ
り、図７のＤ−Ｄ断面図である。図中、２７は誘電体、
２８は上記第一の面状導体の上側に概略平行に配置され
た第三の導体、２９は第三の導体をＴＭ０１モードを励
振するための給電線路である同軸線路、３０は内導体、
３１は給電点である。図において同記号は同じものを示
す。また、第一のアンテナの構造は実施例１と同じであ
り、第一の導体５と第二の導体９はスロットの設けられ
た導体であり、第三の導体２８は第二のアンテナとする
ためのマイクロストリップアンテナである。Embodiment 3 FIG. 7 shows another embodiment of the antenna device according to the present invention, and FIG. 8 is a diagram showing a configuration when power is supplied by a coaxial line, and is a sectional view taken along the line DD of FIG. . In the figure, 27 is a dielectric,
28 is a third conductor arranged substantially in parallel on the first planar conductor, 29 is a coaxial line which is a feed line for exciting the third conductor in the TM01 mode, 30 is an inner conductor,
31 is a feeding point. In the figures, the same symbols indicate the same items. Further, the structure of the first antenna is the same as that of the first embodiment, the first conductor 5 and the second conductor 9 are conductors provided with slots, and the third conductor 28 is a second antenna. For a microstrip antenna.

【００３０】第一のアンテナの動作は実施例１と同じで
ある。第二のアンテナは第一の導体５を地板とし第三の
導体２８を放射導体とするマイクロストリップアンテナ
として動作させＴＭ₀₁モードで励振するため、上記第一
のアンテナの交差偏波である垂直偏波を水平面内に生
じ、実施例１と同じように位相差を９０度つけることに
より水平面内に無指向性の円偏波を生じる。The operation of the first antenna is the same as in the first embodiment. Second antenna for exciting in TM ₀₁ mode is operated as a microstrip antenna for radiating conductor and third conductor 28 and the ground plane of the first conductor 5, vertically polarized a cross polarization of the first antenna A wave is generated in a horizontal plane, and a non-directional circularly polarized wave is generated in the horizontal plane by giving a phase difference of 90 degrees as in the first embodiment.

【００３１】実施例４図９はこの発明に係るアンテナ装置の他の実施例であ
り、図１０はアンテナ装置の構成を示す図、図１１は図
９のＥ−Ｅ断面図である。図中、２９ａ，２９ｂは第二
のアンテナであるモノポールアンテナ、３０は給電線
路、３１ａはモノポールアンテナ２９ａを給電する給電
線路、３１ｂはモノポールアンテナ２９ｂを給電する給
電線路である。図において同記号は同じものを示す。ま
た、第一のアンテナの構造は実施例１と同じである。Embodiment 4 FIG. 9 shows another embodiment of the antenna device according to the present invention. FIG. 10 is a diagram showing the configuration of the antenna device, and FIG. 11 is a sectional view taken along line EE of FIG. In the figure, 29a and 29b are monopole antennas as second antennas, 30 is a feed line, 31a is a feed line for feeding the monopole antenna 29a, and 31b is a feed line for feeding the monopole antenna 29b. In the figures, the same symbols indicate the same items. The structure of the first antenna is the same as that of the first embodiment.

【００３２】次に動作について説明する。給電点１３に
おいて給電線路３０からの電流が６分配されストリップ
線路１２ａ〜１２ｄと給電線路３１ａ，３１ｂにわか
れ、ストリップ線路１２ａ〜１２ｄはスロット６ａ〜６
ｄ，１１ａ〜１１ｄへ電磁結合されスロット間に電界を
生じ水平偏波を水平面内に放射する。また、給電線路３
１ａ，３１ｂはそれぞれモノポールアンテナ２９ａ，２
９ｂを励振し、第一のアンテナと交差する垂直偏波を水
平面内に放射し、また垂直面内に対称性良く放射する。
ストリップ線路１２ａ〜１２ｄを用いて第二のアンテナ
と位相差を９０度付けることにより無指向性の円偏波が
得られる。Next, the operation will be described. At the feeding point 13, the current from the feeding line 30 is divided into six and divided into strip lines 12a to 12d and feeding lines 31a and 31b. The strip lines 12a to 12d are divided into slots 6a to 6d.
d, 11a to 11d are electromagnetically coupled to each other to generate an electric field between the slots, and radiate a horizontally polarized wave into a horizontal plane. Feeding line 3
1a and 31b are monopole antennas 29a and 2 respectively.
9b is excited to radiate a vertically polarized wave crossing the first antenna in a horizontal plane and symmetrically in a vertical plane.
A non-directional circularly polarized wave can be obtained by giving a phase difference of 90 degrees with the second antenna using the strip lines 12a to 12d.

【００３３】実施例５図１２はこの発明に係るアンテナ装置の他の実施例であ
り、アンテナの構成を示す図である。図中、３２は第一
のアンテナであるノッチアンテナ２台の間に配置された
モノポールアンテナである。図において同記号は同じも
のを示す。また、ノッチアンテナの構造は実施例１と同
じである。Embodiment 5 FIG. 12 shows another embodiment of the antenna device according to the present invention, and is a view showing the configuration of the antenna. In the figure, reference numeral 32 denotes a monopole antenna arranged between two notch antennas, which are first antennas. In the figures, the same symbols indicate the same items. The structure of the notch antenna is the same as that of the first embodiment.

【００３４】次に動作について説明する。第一のアンテ
ナであるノッチアンテナの動作は実施例１と同じであ
る。２台のノッチアンテナ間にあるモノポールアンテナ
がノッチアンテナの交差偏波を放射するため位相差を９
０度付けることにより無指向性の円偏波が得られる。Next, the operation will be described. The operation of the notch antenna as the first antenna is the same as that of the first embodiment. Since the monopole antenna between the two notch antennas radiates the cross polarization of the notch antenna, the phase difference is 9
Non-directional circularly polarized waves can be obtained by attaching 0 degrees.

【００３５】実施例６図１３はこの発明に係るアンテナ装置の他の実施例であ
り、アンテナの構成を示す斜視図であり、図１４は一本
の同軸線路で給電する時の構成を示す図で図１３のＦ−
Ｆ断面図であり、３３は第一の導体５の給電点である。
図１５は二本の同軸線路で給電する時の構成を示す図で
図１３のＦ−Ｆ断面図であり、３４は同軸線路、３５は
第一の導体５の給電線路である。図において同記号は同
じものを示す。Embodiment 6 FIG. 13 shows another embodiment of the antenna device according to the present invention, and is a perspective view showing the configuration of the antenna, and FIG. 14 is a diagram showing the configuration when power is supplied by one coaxial line. And F- of FIG.
It is F sectional drawing, 33 is a feeding point of the 1st conductor 5. FIG.
FIG. 15 is a diagram showing a configuration when power is supplied by two coaxial lines. FIG. 15 is a cross-sectional view taken along the line FF of FIG. In the figures, the same symbols indicate the same items.

【００３６】次に動作について説明する。第一のアンテ
ナは実施例１と同じである。第一の導体５は中央で給電
されるため第二の導体９と第一の導体５から成るアンテ
ナは第二の導体９を地導体とし第一の導体５を放射導体
とするマイクロストリップアンテナとして動作しＴＭ₀₁
モード励振により第一のアンテナに対して交差偏波を生
じる。したがって、実施例１と同じくストリップ線路１
２ａ〜１２ｄの長さを調整して垂直、水平偏波の位相に
９０度の差をつけることにより水平面内に無指向性の円
偏波特性を生じる。Next, the operation will be described. The first antenna is the same as in the first embodiment. Since the first conductor 5 is fed at the center, the antenna composed of the second conductor 9 and the first conductor 5 is a microstrip antenna having the second conductor 9 as a ground conductor and the first conductor 5 as a radiation conductor. Works TM ₀₁
The mode excitation produces cross polarization for the first antenna. Therefore, the strip line 1 is the same as in the first embodiment.
By adjusting the lengths of 2a to 12d to make a 90 degree difference between the phases of the vertical and horizontal polarizations, a non-directional circular polarization characteristic is generated in the horizontal plane.

【００３７】実施例７図１６はこの発明に係るアンテナ装置の他の実施例であ
り、アンテナの構成を示す斜視図であり、図１７は同軸
線路で給電する時の構成を示す図で図１６のＧ−Ｇ断面
図である。図において同記号は同じものを示す。また、
実施例１の第一のアンテナの導体１０の無い形状であ
る。Embodiment 7 FIG. 16 shows another embodiment of the antenna device according to the present invention, and is a perspective view showing the configuration of the antenna. FIG. 17 is a diagram showing the configuration when power is supplied through a coaxial line. GG sectional view of FIG. In the figures, the same symbols indicate the same items. Also,
This is a shape without the conductor 10 of the first antenna of the first embodiment.

【００３８】次に動作について説明する。このアンテナ
装置は第一の導体５、第二の導体９、スロット６ａ〜６
ｄ，１１ａ〜１１ｄ、ストリップ線路１２ａ〜１２ｄ及
び、誘電体７，８より構成されており、ストリップ線路
１２ａ〜１２ｄを介してスロット６ａ〜６ｄ，１１ａ〜
１１ｄへ電磁結合によりスロット間に電界を生じ水平面
内に水平偏波を放射する。ストリップ線路１２ａ〜１２
ｄの線路長は等しく、これより各スロットから放射する
電波は同相となり水平面内において無指向性の水平偏波
を生じる。また上記第一、第二の導体間は同電位とする
手段を備えていないので電位差が生じるため垂直偏波が
生じる。したがって、実施例１と同じくストリップ線路
１２ａ〜１２ｄの長さを調整することにより水平偏波と
垂直偏波に位相差を９０度つけることにより円偏波特性
が得られる。Next, the operation will be described. This antenna device has a first conductor 5, a second conductor 9, slots 6a to 6
d, 11a to 11d, strip lines 12a to 12d, and dielectrics 7, 8 and slots 6a to 6d, 11a to 11d through the strip lines 12a to 12d.
An electromagnetic field is generated between the slots by electromagnetic coupling to 11d, and horizontally polarized waves are radiated in a horizontal plane. Strip lines 12a-12
The line lengths of d are equal, whereby the radio waves radiated from each slot become in-phase and generate non-directional horizontal polarization in the horizontal plane. In addition, since there is no means for equalizing the potential between the first and second conductors, a potential difference occurs, and vertical polarization occurs. Therefore, circular polarization characteristics can be obtained by adjusting the lengths of the strip lines 12a to 12d to provide a phase difference of 90 degrees between the horizontal polarization and the vertical polarization as in the first embodiment.

【００３９】実施例８図１８はこの発明に係るアンテナ装置の他の実施例であ
り、アンテナの構成を示す斜視図である。この実施例は
誘電体７，８の厚さが等しい実施例７に対して誘電体
７，８の厚さが異なる例である。図１９は同軸線路で給
電する時の構成を示す図で図１８のＨ−Ｈ断面図であ
る。図において同記号は同じものを示す。Embodiment 8 FIG. 18 shows another embodiment of the antenna device according to the present invention, and is a perspective view showing the structure of the antenna. This embodiment is an example in which the thicknesses of the dielectrics 7 and 8 are different from those of the embodiment 7 in which the thicknesses of the dielectrics 7 and 8 are equal. FIG. 19 is a diagram showing a configuration when power is supplied by a coaxial line, and is a sectional view taken along line HH of FIG. In the figures, the same symbols indicate the same items.

【００４０】次に動作について説明する。水平偏波の動
作原理は実施例７と同じである。誘電体７，８の厚さが
異なるため垂直偏波を生じる。したがって、実施例１と
同じくストリップ線路１２ａ〜１２ｄの長さを調整する
ことにより水平偏波と垂直偏波に位相差を９０度つける
ことにより円偏波特性が得られる。Next, the operation will be described. The operation principle of horizontal polarization is the same as that of the seventh embodiment. Since the thicknesses of the dielectrics 7 and 8 are different, vertical polarization occurs. Therefore, circular polarization characteristics can be obtained by adjusting the lengths of the strip lines 12a to 12d to provide a phase difference of 90 degrees between the horizontal polarization and the vertical polarization as in the first embodiment.

【００４１】実施例９図２０はこの発明に係るアンテナ装置の他の実施例であ
り、アンテナの構成を示す斜視図である。３６ａ〜３６
ｄは第一の導体５に設けた円形の切り取り穴である。図
において同記号は同じものを示す。Embodiment 9 FIG. 20 shows another embodiment of the antenna device according to the present invention, and is a perspective view showing the structure of the antenna. 36a-36
d is a circular cutout hole provided in the first conductor 5. In the figures, the same symbols indicate the same items.

【００４２】次に動作について説明する。第一の導体５
と第二の導体９の形状が非対称であるため垂直偏波を生
じる。したがって、実施例１と同じくストリップ線路１
２ａ〜１２ｄの長さを調整することにより水平偏波と垂
直偏波に位相差を９度つけることにより円偏波特性が得
られる。ここでは円形の切り取り穴の例を示したが、他
の形状でも同じである。Next, the operation will be described. First conductor 5
And the second conductor 9 is asymmetric in shape, which causes vertical polarization. Therefore, the strip line 1 is the same as in the first embodiment.
By adjusting the lengths of 2a to 12d to give a phase difference of 9 degrees between the horizontal polarization and the vertical polarization, circular polarization characteristics can be obtained. Here, an example of a circular cutout hole is shown, but the same applies to other shapes.

【００４３】実施例１０図２１はこの発明に係るアンテナ装置の他の実施例であ
り、アンテナの構成を示す斜視図、図２２は図２１のＩ
−Ｉ断面図である。図中、３９は同軸励振電流モノポー
ルアンテナ、４０は概略１／４波長のスカート、４１は
同軸励振電流モノポールアンテナ３９を給電する同軸線
路である。４２は内導体、４３はストリップ線路を給電
するための同軸線路、４４は内導体、４５は同軸線路４
１，４３に電力を分配する分配器、４６はこのアンテナ
装置に電力を供給する同軸線路である。図において同記
号は同じものを示す。また、第一のアンテナの構造は実
施例１と同じである。Embodiment 10 FIG. 21 shows another embodiment of the antenna device according to the present invention. FIG. 21 is a perspective view showing the structure of the antenna. FIG.
FIG. 2 is a sectional view taken along the line I. In the figure, 39 is a coaxial excitation current monopole antenna, 40 is a skirt of approximately 1/4 wavelength, and 41 is a coaxial line for feeding the coaxial excitation current monopole antenna 39. 42 is an inner conductor, 43 is a coaxial line for feeding a strip line, 44 is an inner conductor, 45 is a coaxial line 4
A distributor for distributing power to the antennas 43 is a coaxial line for supplying power to the antenna device. In the figures, the same symbols indicate the same items. The structure of the first antenna is the same as that of the first embodiment.

【００４４】次に動作について説明する。同軸線路４６
から分配器４５により同軸線路４３に分配された電力に
より第一のアンテナは動作する。第一のアンテナの動作
は実施例１と同じである。第二のアンテナであるスカー
ト４０付同軸励振電流モノポールアンテナ３９は同軸線
路４６から分配器４５により同軸線路４１に分配された
電力を第一のアンテナと交差する垂直偏波として水平面
内に放射する。また、第一のアンテナの第一の面状導体
と第二の面状導体で分けられた空間の一方に同軸励振電
流モノポールアンテナ３９を配置し、他方の空間に上記
同軸励振電流モノポールアンテナ３９に対称性良くスカ
ート４０を設けているため垂直面内に対称性良く放射す
る。ストリップ線路１２ａ〜１２ｄを用いて第二のアン
テナと位相差を９０度付けることにより無指向性の円偏
波が得られる。なお、ここでは円筒状のスカートを示し
たが、これに限らず複数個の線状導体を用いても上記同
様の効果が得られる。Next, the operation will be described. Coaxial line 46
Then, the first antenna operates by the power distributed to the coaxial line 43 by the distributor 45. The operation of the first antenna is the same as in the first embodiment. A coaxial excitation current monopole antenna 39 with a skirt 40, which is a second antenna, radiates the power distributed from the coaxial line 46 to the coaxial line 41 by the distributor 45 as a vertically polarized wave crossing the first antenna in a horizontal plane. . Further, a coaxial excitation current monopole antenna 39 is disposed in one of the spaces divided by the first planar conductor and the second planar conductor of the first antenna, and the coaxial excitation current monopole antenna 39 is disposed in the other space. Since the skirt 40 is provided with symmetry in 39, radiation is symmetrically emitted in a vertical plane. A non-directional circularly polarized wave can be obtained by giving a phase difference of 90 degrees with the second antenna using the strip lines 12a to 12d. Although the cylindrical skirt is shown here, the same effect can be obtained by using a plurality of linear conductors.

【００４５】[0045]

【発明の効果】以上のように、この発明によれば、ノッ
チアンテナを用いてその面内に円偏波を放射できるよう
構成したので、アンテナ効率が高く周波数帯域も広く水
平面内に方向性を持たない円偏波放射特性を持つアンテ
ナ装置を得られる。As described above, according to the present invention, the notch antenna is used to radiate a circularly polarized wave in the plane, so that the antenna efficiency is high, the frequency band is wide, and the directionality in the horizontal plane is improved. It is possible to obtain an antenna device having circularly polarized wave radiation characteristics that does not have it.

【００４６】また、請求項１のアンテナ装置によれば、
第一のアンテナの面内に方向性を持たない円偏波放射特
性を持つアンテナ装置を得られる効果がある。According to the antenna device of the first aspect,
There is an effect that an antenna device having a circularly polarized wave radiation characteristic having no directivity in the plane of the first antenna can be obtained.

【００４７】また、請求項２のアンテナ装置によれば、
第一のアンテナの面に直交する面内での円偏波放射特性
の劣化が低減されたアンテナ装置を得られる効果があ
る。According to the antenna device of the second aspect,
This has the effect of obtaining an antenna device in which the deterioration of the circularly polarized wave radiation characteristic in a plane orthogonal to the plane of the first antenna is reduced.

【００４８】また、請求項３のアンテナ装置によれば、
第一のアンテナの面内に方向性を持たない円偏波放射特
性を持つ平板なアンテナ装置を得られる効果がある。According to the antenna device of the third aspect,
There is an effect that a flat antenna device having circularly polarized wave radiation characteristics having no directivity in the plane of the first antenna can be obtained.

【００４９】また、請求項４のアンテナ装置によれば、
第一のアンテナの面に直交する面内の放射特性の良い円
偏波放射特性を持つアンテナ装置を得られる効果があ
る。According to the antenna device of the fourth aspect,
There is an effect that an antenna device having good circularly polarized wave radiation characteristics with good radiation characteristics in a plane orthogonal to the plane of the first antenna is obtained.

【００５０】また、請求項５のアンテナ装置によれば、
第一のアンテナの面に直交する面内の放射特性の良い円
偏波放射特性を持つアンテナ装置を得られる効果があ
る。According to the antenna device of the fifth aspect,
There is an effect that an antenna device having good circularly polarized wave radiation characteristics with good radiation characteristics in a plane orthogonal to the plane of the first antenna is obtained.

【００５１】また、請求項６のアンテナ装置によれば、
第一のアンテナと第二のアンテナを共通の構造で形成で
き、小形の平板なアンテナ装置を得られる効果がある。According to the antenna device of the sixth aspect,
Since the first antenna and the second antenna can be formed with a common structure, there is an effect that a small flat antenna device can be obtained.

【００５２】また、請求項７のアンテナ装置によれば、
ノッチアンテナのみでその面内に方向性を持たない円偏
波放射特性を持つアンテナ装置を得られる効果がある。According to the antenna device of the seventh aspect,
There is an effect that an antenna device having circularly polarized wave radiation characteristics having no directivity in the plane can be obtained by using only the notch antenna.

【００５３】また、請求項８のアンテナ装置によれば、
ノッチアンテナのみでその面内に方向性を持たない円偏
波放射特性を持つアンテナ装置を得られる効果がある。According to the antenna device of the eighth aspect,
There is an effect that an antenna device having circularly polarized wave radiation characteristics having no directivity in the plane can be obtained by using only the notch antenna.

【００５４】また、請求項９のアンテナ装置によれば、
第一のアンテナの面に直交する面内の対称性が良く放射
特性の良い円偏波放射特性を持つアンテナ装置を得られ
る効果がある。According to the antenna device of the ninth aspect,
This has the effect of obtaining an antenna device having good circular symmetry in a plane orthogonal to the plane of the first antenna and having circularly polarized radiation characteristics with good radiation characteristics.

[Brief description of the drawings]

【図１】この発明に係わるアンテナ装置の一実施例を示
す斜視図である。FIG. 1 is a perspective view showing an embodiment of an antenna device according to the present invention.

【図２】図１の実施例のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of the embodiment of FIG.

【図３】図１の実施例のアンテナ装置の構造を示すため
の分解図である。FIG. 3 is an exploded view showing a structure of the antenna device of the embodiment of FIG. 1;

【図４】図１の同軸線路で給電する例を示すためのＢ−
Ｂ断面図である。FIG. 4 is a cross-sectional view illustrating an example of power supply through the coaxial line of FIG. 1;
It is B sectional drawing.

【図５】この発明に係わるアンテナ装置の他の実施例を
示す斜視図である。FIG. 5 is a perspective view showing another embodiment of the antenna device according to the present invention.

【図６】図５の同軸線路で給電する例を示すためのＣ−
Ｃ断面図である。FIG. 6 is a diagram illustrating an example of power supply using the coaxial line in FIG. 5;
It is C sectional drawing.

【図７】この発明に係わるアンテナ装置の他の実施例を
示す斜視図である。FIG. 7 is a perspective view showing another embodiment of the antenna device according to the present invention.

【図８】図８の同軸線路で給電する例を示すためのＤ−
Ｄ断面図である。FIG. 8 is a diagram showing a D-line for illustrating an example in which power is supplied by the coaxial line in FIG. 8;
It is D sectional drawing.

【図９】この発明に係わるアンテナ装置の他の実施例を
示す斜視図である。FIG. 9 is a perspective view showing another embodiment of the antenna device according to the present invention.

【図１０】図９の実施例のアンテナ装置の構造を示すた
めの分解図である。FIG. 10 is an exploded view showing the structure of the antenna device of the embodiment shown in FIG. 9;

【図１１】図９のＥ−Ｅ断面図である。FIG. 11 is a sectional view taken along the line EE of FIG. 9;

【図１２】この発明に係わるアンテナ装置の他の実施例
を示す斜視図である。FIG. 12 is a perspective view showing another embodiment of the antenna device according to the present invention.

【図１３】この発明に係わるアンテナ装置の他の実施例
を示す斜視図である。FIG. 13 is a perspective view showing another embodiment of the antenna device according to the present invention.

【図１４】図１３の実施例の一本の同軸線路で給電する
場合を示すためのＦ−Ｆ断面図である。FIG. 14 is a sectional view taken along line FF for illustrating a case where power is supplied by one coaxial line in the embodiment of FIG.

【図１５】図１３の実施例の二本の同軸線路で給電する
場合を示すためのＦ−Ｆ断面図である。FIG. 15 is a cross-sectional view taken along line FF for illustrating a case where power is supplied by two coaxial lines in the embodiment of FIG. 13;

【図１６】この発明に係わるアンテナ装置の他の実施例
を示す斜視図である。FIG. 16 is a perspective view showing another embodiment of the antenna device according to the present invention.

【図１７】図１６の同軸線路で給電する例を示すための
Ｇ−Ｇ断面図である。17 is a GG sectional view showing an example in which power is supplied by the coaxial line in FIG. 16;

【図１８】この発明に係わるアンテナ装置の他の実施例
を示す斜視図である。FIG. 18 is a perspective view showing another embodiment of the antenna device according to the present invention.

【図１９】図１８の同軸線路で給電する例を示すための
Ｈ−Ｈ断面図である。19 is an HH cross-sectional view showing an example in which power is supplied by the coaxial line in FIG. 18;

【図２０】この発明に係わるアンテナ装置の他の実施例
を示す斜視図である。FIG. 20 is a perspective view showing another embodiment of the antenna device according to the present invention.

【図２１】この発明に係わるアンテナ装置の他の実施例
を示す斜視図である。FIG. 21 is a perspective view showing another embodiment of the antenna device according to the present invention.

【図２２】図２１の実施例のＩ−Ｉ断面図である。FIG. 22 is a sectional view taken along the line II of the embodiment in FIG. 21;

【図２３】従来のアンテナ装置を示す構成図である。FIG. 23 is a configuration diagram showing a conventional antenna device.

[Explanation of symbols]

１放射導体２同軸線路３地板４モノポールアンテナ５第一の導体６ａスロット線路６ｂスロット線路６ｃスロット線路６ｄスロット線路７誘電体８誘電体９第二の導体１０導体１１ａスロット線路１１ｂスロット線路１１ｃスロット線路１１ｄスロット線路１２ａストリップ線路１２ｂストリップ線路１２ｃストリップ線路１２ｄストリップ線路１３給電点１４同軸線路１５内導体１６給電点１７同軸線路１８内導体１９ａモノポールアンテナ１９ｂモノポールアンテナ１９ｃモノポールアンテナ１９ｄモノポールアンテナ２０反射板２１同軸線路２２内導体２３給電点２４同軸線路２５内導体２６給電点２７誘電体２８第三の導体２９ａモノポールアンテナ２９ｂモノポールアンテナ３０給電線路３１ａ給電線３１ｂ給電線３２モノポールアンテナ３３給電点３４同軸線路３５給電線３６ａ切り取り穴３６ｂ切り取り穴３６ｃ切り取り穴３６ｄ切り取り穴３７分配器３８同軸線路３９同軸励振電流モノポールアンテナ４０概略１／４波長のスカート４１同軸線路４２内導体４３同軸線路４４内導体４５分配器４６同軸線路 REFERENCE SIGNS LIST 1 radiating conductor 2 coaxial line 3 ground plane 4 monopole antenna 5 first conductor 6 a slot line 6 b slot line 6 c slot line 6 d slot line 7 dielectric 8 dielectric 9 second conductor 10 conductor 11 a slot line 11 b slot line 11 c slot Line 11d Slot line 12a Strip line 12b Strip line 12c Strip line 12d Strip line 13 Feed point 14 Coaxial line 15 Inner conductor 16 Feed point 17 Coaxial line 18 Inner conductor 19a Monopole antenna 19b Monopole antenna 19c Monopole antenna 19d Monopole antenna DESCRIPTION OF SYMBOLS 20 Reflector 21 Coaxial line 22 Inner conductor 23 Feeding point 24 Coaxial line 25 Inner conductor 26 Feeding point 27 Dielectric 28 Third conductor 29a Monopole antenna 29b Monopole antenna Tena 30 Feed line 31a Feed line 31b Feed line 32 Monopole antenna 33 Feed point 34 Coaxial line 35 Feed line 36a Cut hole 36b Cut hole 36c Cut hole 36d Cut hole 37 Distributor 38 Coaxial line 39 Coaxial exciting current monopole antenna 40 Outline 1/4 wavelength skirt 41 coaxial line 42 inner conductor 43 coaxial line 44 inner conductor 45 distributor 46 coaxial line

───────────────────────────────────────────────────── フロントページの続き (72)発明者大嶺裕幸鎌倉市大船五丁目１番１号三菱電機株式会社電子システム研究所内 (72)発明者片木孝至鎌倉市大船五丁目１番１号三菱電機株式会社電子システム研究所内 (56)参考文献特開平１−293704（ＪＰ，Ａ) 特開昭54−41051（ＪＰ，Ａ) 特開平３−3404（ＪＰ，Ａ) (58)調査した分野(Int.Cl.⁷，ＤＢ名) H01Q 21/00 - 21/30 H01Q 13/10 ──────────────────────────────────────────────────続き Continuing on the front page (72) Inventor Hiroyuki Omine 5-1-1 Ofuna, Kamakura City Inside Mitsubishi Electric Corporation Electronic Systems Research Laboratory (72) Inventor Takashi Katagi 5-1-1 Ofuna, Kamakura City Mitsubishi (56) References JP-A-1-293704 (JP, A) JP-A-54-41051 (JP, A) JP-A-3-3404 (JP, A) (58) Survey Field (Int.Cl. ⁷ , DB name) H01Q 21/00-21/30 H01Q 13/10

Claims

(57) [Claims]

1. A first planar conductor, and a second planar conductor arranged substantially parallel to and opposed to the first planar conductor,
The first and second planar conductors have the same potential.
Continuous conductor, a plurality of slots radially formed at corresponding positions of the first planar conductor and the second planar conductor, and one end of which is an open end extending to an edge of the planar conductor; Between the one planar conductor and the second planar conductor, the respective planar conductors are insulated from each other, each of the plurality of slots is excited by electromagnetic coupling, and radio waves are transmitted in phase from the open ends of the plurality of slots. A first antenna, which is a notch antenna having a strip conductor arranged to radiate, and the first antenna transmits radio waves in a polarization direction substantially orthogonal to the polarization direction of radio waves radiated by the first antenna. Radially shaped substantially perpendicular to the first planar conductor so as to radiate in the plane where the antenna is located
The mono port located in the center of the
A second antenna that is a multi- antenna, and exciting the first antenna and the second antenna with a phase difference of about 90 degrees that forms a circularly polarized wave in the plane of the first antenna. Antenna device.

2. A first planar conductor, and a second planar conductor arranged substantially parallel to and opposed to the first planar conductor,
The first and second planar conductors have the same potential.
Continuous conductor, a plurality of slots radially formed at corresponding positions of the first planar conductor and the second planar conductor, and one end of which is an open end extending to an edge of the planar conductor; Between the one planar conductor and the second planar conductor, the respective planar conductors are insulated from each other, each of the plurality of slots is excited by electromagnetic coupling, and radio waves are transmitted in phase from the open ends of the plurality of slots. A first antenna, which is a notch antenna having a strip conductor arranged to radiate, and the first antenna transmits radio waves in a polarization direction substantially orthogonal to the polarization direction of radio waves radiated by the first antenna. A second antenna, which is a plurality of monopole antennas respectively arranged near the open ends of the plurality of slots substantially perpendicular to the first planar conductor so as to radiate in a plane where the antenna is present , the above
The plurality formed radially substantially perpendicular to the first planar conductor
Monopole antenna located in the center of the slot
An antenna device comprising: a first reflector and a second reflector which excite the first antenna and the second antenna with a phase difference of about 90 degrees forming a circularly polarized wave in the plane of the first antenna. .

3. A first planar conductor, and a second planar conductor arranged substantially parallel to and opposed to the first planar conductor,
The first and second planar conductors have the same potential.
Continuous conductor, a plurality of slots radially formed at corresponding positions of the first planar conductor and the second planar conductor, and one end of which is an open end extending to an edge of the planar conductor; Between the one planar conductor and the second planar conductor, the respective planar conductors are insulated from each other, each of the plurality of slots is excited by electromagnetic coupling, and radio waves are transmitted in phase from the open ends of the plurality of slots. release the first antenna is a notch antenna having a strip conductor disposed so as to emit, the first planar conductor and schematic third planar conductors arranged in parallel with
A radiation conductor , the first planar conductor is formed as a ground conductor,
A microstrip antenna that is excited in a higher-order mode by a coaxial feed line and radiates a radio wave in a polarization direction substantially orthogonal to the polarization direction of the radio wave radiated by the first antenna into a plane in which the first antenna exists. and a certain second antenna, the first antenna and the second antenna the first
An antenna device characterized in that it is excited with a phase difference of about 90 degrees to form a circularly polarized wave in the plane of the antenna.

4. A first planar conductor, and a second planar conductor arranged substantially parallel to and opposed to the first planar conductor,
The first and second planar conductors have the same potential.
Continuous conductor, a plurality of slots radially formed at corresponding positions of the first planar conductor and the second planar conductor, and one end of which is an open end extending to an edge of the planar conductor; Between the one planar conductor and the second planar conductor, the respective planar conductors are insulated from each other, each of the plurality of slots is excited by electromagnetic coupling, and radio waves are transmitted in phase from the open ends of the plurality of slots. A first antenna, which is a notch antenna having a strip conductor arranged to radiate, and the first antenna transmits radio waves in a polarization direction substantially orthogonal to the polarization direction of radio waves radiated by the first antenna. The first planar conductor and the second planar conductor are respectively radiated in the plane where the antenna exists.
The first planar conductor and the second planar conductor are substantially perpendicular to the conductor.
A second antenna that is two monopole antennas disposed symmetrically with respect to a plane provided with the strip conductor in a central portion of the plurality of radially formed slots of the body; Connect the first antenna and the second antenna
An antenna device characterized in that it is excited with a phase difference of about 90 degrees to form a circularly polarized wave in the plane of the first antenna.

5. A first planar conductor, and a second planar conductor substantially parallel to and opposed to the first planar conductor,
The first and second planar conductors have the same potential.
Continuous conductor, a plurality of slots radially formed at corresponding positions of the first planar conductor and the second planar conductor, and one end of which is an open end extending to an edge of the planar conductor; Between the one planar conductor and the second planar conductor, the respective planar conductors are insulated from each other, each of the plurality of slots is excited by electromagnetic coupling, and radio waves are transmitted in phase from the open ends of the plurality of slots. Two notch antennas each having a strip conductor arranged to radiate and
A first antenna disposed in a direction, and radiates a radio wave in a polarization direction substantially orthogonal to the polarization direction of the radio wave radiated by the first antenna in a plane substantially parallel to a plane in which the first antenna exists. So that it is almost perpendicular to the surface where the notch antenna is
Radially formed between the two notch antennas
Monopole antenna located in the center of multiple slots
A second antenna that is an antenna, the first antenna and the second antenna on the surface where the first antenna exists
An antenna device which is excited by a phase difference of about 90 degrees to form a circularly polarized wave in a substantially parallel plane.

6. A first planar conductor, and a second planar conductor arranged substantially parallel to and opposed to the first planar conductor,
The first and second planar conductors have the same potential.
Continuous conductor, a plurality of slots radially formed at corresponding positions of the first planar conductor and the second planar conductor, and one end of which is an open end extending to an edge of the planar conductor; Between the one planar conductor and the second planar conductor, the respective planar conductors are insulated from each other, each of the plurality of slots is excited by electromagnetic coupling, and radio waves are transmitted in phase from the open ends of the plurality of slots. a first antenna is a notch antenna having a strip conductor disposed so as to emit, the first
The planar conductor is a radiation conductor, and the second planar conductor is a ground conductor.
Formed radially of the first planar conductor
Inner conductor in the center of the plurality of slots, the second surface
An exciting means for exciting an electric field between the first planar conductor and the second planar conductor, which comprises a coaxial feed line in which an outer conductor is connected to the planar conductor, and biases an electric wave radiated by the first antenna. A second antenna that is a microstrip antenna that radiates radio waves in a polarization direction substantially orthogonal to the wave direction in a plane where the first antenna exists, and the first antenna and the second antenna An antenna device characterized in that it is excited with a phase difference of about 90 degrees to form a circularly polarized wave in the plane of the first antenna.

7. A first planar conductor, and a second planar conductor arranged substantially parallel to and opposed to the first planar conductor,
A plurality of slots radially formed at corresponding positions of the first planar conductor and the second planar conductor, one end of which is an open end extending to an edge of the planar conductor; Between the conductor and the second planar conductor, insulated from each planar conductor,
The plurality of the respective slots excited by electromagnetic coupling, and a placement strip conductor so as to radiate radio waves in phase from the open end of the plurality of slots notch
Generated by the potential difference between the first planar conductor and the second planar conductor, and the notch antenna
Using radio waves in the polarization direction component substantially perpendicular to the polarization direction of the radio waves radiated to the present plane of container, the Notchia
Antenna apparatus characterized by forming the circular polarized into existing within the plane of antenna.

8. A first planar conductor provided on a first dielectric substrate, and a second planar conductor having a thickness different from that of the first dielectric substrate.
The first dielectric substrate and the second dielectric substrate are provided on a dielectric substrate.
With the dielectric substrate facing , approximately parallel to the first planar conductor
A second planar conductor that is placed on, and the first planar conductor
A connection conductor having the same potential as the second planar conductor, and an opening formed radially at a corresponding position between the first planar conductor and the second planar conductor, and having one end reaching an edge of the planar conductor. A plurality of terminated slots, the first dielectric substrate and the second dielectric
During the body substrate, each of the upper Symbol plurality of slots excited by electromagnetic coupling consists notch antenna with a placement strip conductor so as to radiate radio waves in phase from the open end of the plurality of slots, The above first dielectric base
Excitation due to thickness difference between plate and second dielectric substrate
Of the notch antenna caused by the asymmetry
An antenna device characterized in that a circularly polarized wave is formed in a plane in which the notch antenna is present by using a radio wave having a polarization direction component substantially orthogonal to a polarization direction of the radio wave radiated in a plane where the notch exists.

9. A first planar conductor, and a second planar conductor arranged substantially parallel to and opposed to the first planar conductor,
Contact to the same potential to the first planar conductor and a second planar conductor
Continuous conductor, a plurality of slots radially formed at corresponding positions of the first planar conductor and the second planar conductor, and one end of which is an open end extending to an edge of the planar conductor; Between the one planar conductor and the second planar conductor, the respective planar conductors are insulated from each other, each of the plurality of slots is excited by electromagnetic coupling, and radio waves are transmitted in phase from the open ends of the plurality of slots. a first antenna is a notch antenna having a strip conductor disposed so as to emit, on Symbol the first radio waves polarization direction substantially orthogonal to the polarization direction of the radio wave radiated from the first antenna The first planar conductor substantially perpendicular to the first planar conductor so as to radiate in the plane where the antenna exists.
The center of the plurality of radially formed slots on the conductor side
And continue from the ground side conductor of the coaxial line.
Turned back to make the electrical length approximately 1/4 wavelength
The skirt that is open-ended at the end reaches the second planar conductor.
In the coaxial line provided at the previous position, the second planar conductor side
And a second antenna that is a monopole antenna fed from the first antenna, the first antenna and the second antenna with a phase difference of about 90 degrees to form a circular polarization in the plane of the first antenna An antenna device characterized by being excited.