JPH05191132A - Plane antenna - Google Patents
Plane antennaInfo
- Publication number
- JPH05191132A JPH05191132A JP4006126A JP612692A JPH05191132A JP H05191132 A JPH05191132 A JP H05191132A JP 4006126 A JP4006126 A JP 4006126A JP 612692 A JP612692 A JP 612692A JP H05191132 A JPH05191132 A JP H05191132A
- Authority
- JP
- Japan
- Prior art keywords
- radiating element
- dielectric
- antenna
- slot
- radiating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 25
- 230000003071 parasitic effect Effects 0.000 claims abstract description 14
- 230000005855 radiation Effects 0.000 claims abstract description 6
- 239000003989 dielectric material Substances 0.000 abstract description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
- H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、マイクロ波帯の送受信
に用いられるトリプレート型平面アンテナに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a triplate type planar antenna used for transmitting and receiving in a microwave band.
【０００２】[0002]
【従来の技術】平面アンテナのアンテナ効率を高める手
段として、昭和６３年電子情報通信学会全国大会予稿Ｂ
−３９「トリプレート線路で給電した窓付きマイクロス
トリップアンテナ」に示されるように、トリプレート線
路を用いて給電線路の低損失化を図る方法がある。この
アンテナの構成は、４図(a)及び(b)に示すように、地導
体１と、この地導体１の面上に誘電体２を配置し、この
誘電体１の面上に放射素子４と給電線路５を含むアンテ
ナ回路を形成し、その面上に誘電体２１を形成し、その
面上にスロット３を有する地導体１１をスロット３が放
射素子４の真上となるように配置している。2. Description of the Related Art As a means for improving the antenna efficiency of a flat antenna, the 1988 National Conference of the Institute of Electronics, Information and Communication Proceedings B
As shown in “-39“ Microstrip antenna with a window fed by a triplate line ”, there is a method of reducing the loss of the feed line by using a triplate line. As shown in FIGS. 4A and 4B, this antenna has a ground conductor 1 and a dielectric 2 arranged on the surface of the ground conductor 1, and a radiating element is arranged on the surface of the dielectric 1. 4 and a feeder line 5 are formed, a dielectric 21 is formed on the surface, and a ground conductor 11 having a slot 3 is arranged on the surface so that the slot 3 is directly above the radiating element 4. is doing.
【０００３】[0003]
【発明が解決しようとする課題】ところが、図４に示す
ような従来のアンテナでは、放射素子４から放射される
電力が、図中Ａで示すように、スロット３から空間へ放
射されるのみならず、図中Ｂで示すように、地導体１お
よび地導体１１の間を伝播し、隣接する放射素子４との
物理的な位置関係によっては、放射する電力が低下する
ことも起こる。また、伝播したＢの電力が隣接するスロ
ット３から放射され、アンテナの指向性に乱れを生じる
場合もある。However, in the conventional antenna as shown in FIG. 4, if the power radiated from the radiating element 4 is only radiated from the slot 3 to the space as shown by A in the figure. However, as indicated by B in the figure, the radiated power may decrease depending on the physical positional relationship between the ground conductor 1 and the ground conductor 11 and the adjacent radiating element 4. In addition, the propagating B power may be radiated from the adjacent slot 3 to disturb the directivity of the antenna.
【０００４】このような問題を解決するためには、１つ
の放射素子４から放射される電力と隣接する放射素子４
から地導体１及び地導体１１の間を伝播してくる電力の
位相をあわせなければならず、そのためには、隣接する
放射素子４の間の間隔が一意的に決まってしまうことと
なる。例えば、一定の間隔の格子上に放射素子を配列し
た場合には、この間隔は使用する電波の中心周波数の自
由空間波長λ0の約０．９倍程度である。In order to solve such a problem, electric power radiated from one radiating element 4 and adjacent radiating element 4 are radiated.
Therefore, it is necessary to match the phases of the electric powers propagating between the ground conductor 1 and the ground conductor 11, and for that reason, the interval between the adjacent radiating elements 4 is uniquely determined. For example, when the radiating elements are arranged on a grid with a constant interval, this interval is about 0.9 times the free space wavelength λ 0 of the center frequency of the radio wave used.
【０００５】しかし、アンテナの効率を高めようとする
と、放射素子４の間隔を使用する電波の中心周波数の自
由空間波長λ0の０．７〜０．８倍にしなければなら
ず、このような従来の技術では、前述の理由によって放
射素子４の配列密度を高くすることができない。However, in order to increase the efficiency of the antenna, the distance between the radiating elements 4 must be set to 0.7 to 0.8 times the free space wavelength λ 0 of the center frequency of the radio wave to be used. In the conventional technique, the arrangement density of the radiating elements 4 cannot be increased due to the above reason.
【０００６】本発明は、指向性や放射損失を維持した上
で、効率に優れた平面アンテナを提供することを目的と
するものである。An object of the present invention is to provide a planar antenna which is excellent in efficiency while maintaining directivity and radiation loss.
【０００７】[0007]
【課題を解決するための手段】本発明の平面アンテナ
は、図１(a)および(b)に示すように、地導体１と、この
地導体１の面上に誘電体２を配置し、この誘電体１の面
上に放射素子４と給電線路５を含むアンテナ回路を形成
し、その面上に誘電体２１を形成し、その面上にスロッ
ト３を有する地導体１１をスロット３が放射素子４の真
上となるように配置してなる平面アンテナにおいて、前
記放射素子４及びスロット３の放射面上に誘電体２２を
設け、さらにその面上であって前記放射素子４およびス
ロット３の真上となる位置に無給電素子６を設け、その
面上で前記放射素子４に接続された給電線路５と平行な
２方向と、その方向と直交する２方向に、給電線路８を
ほぼ１／２波長の長さで前記無給電素子６に接続し、そ
の各給電線路８に放射素子７を接続したことを特徴とす
るものである。As shown in FIGS. 1 (a) and 1 (b), a planar antenna of the present invention has a ground conductor 1 and a dielectric 2 arranged on the surface of the ground conductor 1. An antenna circuit including a radiating element 4 and a feed line 5 is formed on the surface of the dielectric 1, a dielectric 21 is formed on the surface, and a ground conductor 11 having a slot 3 on the surface is radiated by the slot 3. In a planar antenna arranged so as to be directly above the element 4, a dielectric 22 is provided on the radiating surface of the radiating element 4 and the slot 3, and the dielectric 22 is provided on the radiating surface of the radiating element 4 and the slot 3. The parasitic element 6 is provided at a position directly above, and the feed line 8 is almost 1 in two directions parallel to the feed line 5 connected to the radiating element 4 on the surface and two directions orthogonal to the direction. / Connect to the parasitic element 6 with a length of 2 wavelengths and radiate to each of the feeder lines 8 It is characterized in that connecting the child 7.
【０００８】また、図２(a)および(b)に示すように、前
記給電線路８を前記放射素子４に接続された給電線路５
と平行な２方向にのみ設け、その各給電線路８に放射素
子７を接続したことを特徴とするものである。Further, as shown in FIGS. 2 (a) and 2 (b), the power feeding line 8 is connected to the radiating element 4 and the power feeding line 5 is connected.
It is characterized in that the radiating element 7 is connected to each of the feeding lines 8 provided only in two directions parallel to the.
【０００９】[0009]
【作用】本発明の構造とすることによって、放射素子４
は従来のアンテナと同じように互いに干渉しない間隔で
設けられ、本発明の特徴である無給電素子６は、従来の
平面アンテナと同様に動作し、その無給電素子６に接続
された放射素子７は、地導体１１と共に動作するアンテ
ナとすることができ、しかも、分岐や曲がりのある給電
線路４は、地導体１と地導体１１によってシールドした
ことによってそこからの不要放射を抑制することができ
る。したがって、放射素子７はその素子間隔を制限され
ず、アンテナの効率を高めるために適した設計が行え
る。また、直線偏波を使用する場合には、図２(a)およ
び(b)に示すように、給電線路４と平行な２方向にのみ
放射素子７を接続することもでき、このときには、無給
電素子６どうしの間隔は、自由に設定できるものとな
る。The radiating element 4 has the structure of the present invention.
Are provided at intervals that do not interfere with each other like the conventional antenna, and the parasitic element 6 that is a feature of the present invention operates in the same manner as the conventional planar antenna, and the radiating element 7 connected to the parasitic element 6 is used. Can be an antenna that operates together with the ground conductor 11, and since the feed line 4 having a branch or a bend is shielded by the ground conductor 1 and the ground conductor 11, unnecessary radiation from the ground can be suppressed. .. Therefore, the radiating element 7 is not limited in its element interval, and can be designed to enhance the efficiency of the antenna. When using linearly polarized waves, the radiating element 7 can be connected only in two directions parallel to the feed line 4 as shown in FIGS. 2 (a) and 2 (b). The distance between the power feeding elements 6 can be freely set.
【００１０】[0010]
【実施例】図１(a)および(b)にしめす構造とし、地導体
１に厚さ３mmのアルミニウム板を使用し、誘電体２に厚
さ２mmの発泡ポリエチレン(比誘電率εr≒１．１）を使
用し、放射素子４として銅箔をエッチング加工して形成
した９．６mm×≦９．６mmの方形のパッチを４つ用い、
素子間隔は４４．７２mmとし、給電線路５は前記放射素
子と同じ材質で同時にエッチング加工したものを用い
た。また、誘電体２１にも誘電体２と同じ厚さ２mmの発
泡ポリエチレン(比誘電率εr≒１．１）を使用し、地導
体１１には厚さ０．５mmのアルミニウム板を用い、１３
mm×１３mmのスロット３を４つ形成した。さらに、誘電
体２２として厚さ２mmの発泡ポリエチレン(比誘電率εr
≒１．１）を使用し、その上に１０mm×１０mmの無給電
素子を４つ形成し、その無給電素子に、１０mm×１０mm
の方形のパッチを接続して放射素子７とした。このとき
に、無給電素子と放射素子７の配列間隔は、２０mmとし
た。この実施例のアンテナは、周波数が１１．８５ＧＨ
ｚにおいて、約２１．５ｄＢの利得を示した。EXAMPLE A structure shown in FIGS. 1 (a) and 1 (b) is used, an aluminum plate having a thickness of 3 mm is used for the ground conductor 1, and a foamed polyethylene having a thickness of 2 mm (dielectric constant εr≈1. 1) is used, and four 9.6 mm × ≦ 9.6 mm rectangular patches formed by etching a copper foil are used as the radiating element 4,
The element spacing was 44.72 mm, and the feed line 5 was made of the same material as the radiating element and etched at the same time. Further, the dielectric material 21 is made of the same foamed polyethylene as the dielectric material 2 and has a thickness of 2 mm (relative permittivity εr≈1.1), and the ground conductor 11 is an aluminum plate having a thickness of 0.5 mm.
Four slots 3 mm × 13 mm were formed. Further, as the dielectric 22, a foamed polyethylene having a thickness of 2 mm (relative dielectric constant εr
≈1.1) is used, and four parasitic elements of 10 mm × 10 mm are formed on it, and 10 mm × 10 mm are formed on the parasitic elements.
The rectangular patch of was connected to form a radiating element 7. At this time, the spacing between the parasitic elements and the radiating elements 7 was set to 20 mm. The antenna of this embodiment has a frequency of 11.85 GHz.
At z, a gain of about 21.5 dB was shown.
【００１１】[0011]
【発明の効果】以上に説明したように、本発明によっ
て、素子間隔の制限が小さくとも、不要放射や指向性の
乱れがなく効率の高いアンテナを提供することができ
る。As described above, according to the present invention, it is possible to provide an antenna with high efficiency without unnecessary radiation or disturbance of directivity even if the restriction on the element spacing is small.
【図１】 (a)は本発明の一実施例を示す上面図であ
り、(b)はその断面図である。FIG. 1A is a top view showing an embodiment of the present invention, and FIG. 1B is a sectional view thereof.
【図２】 (a)は本発明の他の実施例を示す上面図であ
り、(b)はその断面図である。2A is a top view showing another embodiment of the present invention, and FIG. 2B is a sectional view thereof.
【図３】 (a)は従来例を示す上面図であり、(b)はその
断面図である。3A is a top view showing a conventional example, and FIG. 3B is a sectional view thereof.
１，１１．地導体 ２，２１，２２．
誘電体 ３．スロット ４，７．放射素子 ５，８．給電線路1,11. Ground conductor 2, 21, 22.
Dielectric 3. Slots 4,7. Radiating element 5,8. Power supply line
───────────────────────────────────────────────────── フロントページの続き (72)発明者 村田 孝雄 東京都世田谷区砧一丁目10番11号 日本放 送協会 放送技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takao Murata 1-10-11 Kinuta, Setagaya-ku, Tokyo Inside Japan Broadcasting Corporation Broadcasting Technology Laboratory
Claims (2)
電体(2)を配置し、この誘電体(1)の面上に放射素子(4)
と給電線路(5)を含むアンテナ回路を形成し、その面上
に誘電体(21)を形成し、その面上にスロット(3)を有す
る地導体(11)をスロット(3)が放射素子(4)の真上となる
ように配置してなる平面アンテナにおいて、前記放射素
子(4)及びスロット(3)の放射面上に誘電体(22)を設け、
さらにその面上であって前記放射素子(4)およびスロッ
ト(3)の真上となる位置に無給電素子(6)を設け、その面
上で前記放射素子(4)に接続された給電線路(5)と平行な
２方向と、その方向と直交する２方向に、給電線路(8)
をほぼ１／２波長の長さで前記無給電素子(6)に接続
し、その各給電線路(8)に放射素子(7)を接続したことを
特徴とする平面アンテナ。1. A ground conductor (1), a dielectric (2) is arranged on the surface of the ground conductor (1), and a radiating element (4) is arranged on the surface of the dielectric (1).
An antenna circuit including a feed line (5) and a dielectric (21) is formed on the surface of the antenna circuit, and a ground conductor (11) having a slot (3) on the surface is used as a radiating element for the slot (3). (4) In a planar antenna arranged so as to be directly above, a dielectric (22) is provided on the radiation surface of the radiating element (4) and the slot (3),
Further, a parasitic element (6) is provided at a position on the surface and directly above the radiating element (4) and the slot (3), and a feed line connected to the radiating element (4) on the surface. In two directions parallel to (5) and in two directions orthogonal to that direction, the power supply line (8)
Is connected to the parasitic element (6) with a length of about ½ wavelength, and the radiating element (7) is connected to each of the feeding lines (8).
電体(2)を配置し、この誘電体(1)の面上に放射素子(4)
と給電線路(5)を含むアンテナ回路を形成し、その面上
に誘電体(21)を形成し、その面上にスロット(3)を有す
る地導体(11)をスロット(3)が放射素子(4)の真上となる
ように配置してなる平面アンテナにおいて、前記放射素
子(4)及びスロット(3)の放射面上に誘電体(22)を設け、
さらにその面上であって前記放射素子(4)およびスロッ
ト(3)の真上となる位置に無給電素子(6)を設け、その面
上で前記放射素子(4)に接続された給電線路(5)と平行な
２方向に、給電線路(8)をほぼ１／２波長の長さで前記
無給電素子(6)に接続し、その各給電線路(8)に放射素子
(7)を接続したことを特徴とする平面アンテナ。2. A ground conductor (1) and a dielectric (2) arranged on the surface of the ground conductor (1), and a radiating element (4) on the surface of the dielectric (1).
An antenna circuit including a feed line (5) and a dielectric (21) is formed on the surface of the antenna circuit, and a ground conductor (11) having a slot (3) on the surface is used as a radiating element for the slot (3). (4) In a planar antenna arranged so as to be directly above, a dielectric (22) is provided on the radiation surface of the radiating element (4) and the slot (3),
Further, a parasitic element (6) is provided at a position on the surface and directly above the radiating element (4) and the slot (3), and a feed line connected to the radiating element (4) on the surface. The feed line (8) is connected to the parasitic element (6) with a length of about 1/2 wavelength in two directions parallel to (5), and the radiating element is connected to each feed line (8).
A planar antenna characterized in that (7) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4006126A JP3004439B2 (en) | 1992-01-17 | 1992-01-17 | Planar antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4006126A JP3004439B2 (en) | 1992-01-17 | 1992-01-17 | Planar antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05191132A true JPH05191132A (en) | 1993-07-30 |
| JP3004439B2 JP3004439B2 (en) | 2000-01-31 |
Family
ID=11629819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4006126A Expired - Lifetime JP3004439B2 (en) | 1992-01-17 | 1992-01-17 | Planar antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3004439B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006180444A (en) * | 2004-12-22 | 2006-07-06 | Tatung Co | Circularly polarized array antenna |
| EP3686997A4 (en) * | 2017-09-21 | 2021-06-09 | Fujikura Ltd. | Antenna device |
| EP3686998A4 (en) * | 2017-09-21 | 2021-06-09 | Fujikura Ltd. | Antenna device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771075A (en) * | 1971-05-25 | 1973-11-06 | Harris Intertype Corp | Microstrip to microstrip transition |
| SU1185440A1 (en) * | 1982-10-01 | 1985-10-15 | Inst Radiotekh Elektron | Band-pass filter |
| JPS61281704A (en) * | 1985-06-07 | 1986-12-12 | Yagi Antenna Co Ltd | Shf band plane antenna |
| JPS63135003A (en) * | 1986-11-13 | 1988-06-07 | コミュニケイションズ サテライト コーポレーション | Printed circuit antenna and manufacture of the same |
| JPH02252304A (en) * | 1989-03-27 | 1990-10-11 | Hitachi Chem Co Ltd | Planer antenna |
| JPH03101507A (en) * | 1989-09-14 | 1991-04-26 | Yagi Antenna Co Ltd | Planer antenna |
| JPH03151702A (en) * | 1989-11-08 | 1991-06-27 | Sony Corp | Plane array antenna |
| JPH05152830A (en) * | 1991-11-26 | 1993-06-18 | Sharp Corp | Microstrip antenna |
-
1992
- 1992-01-17 JP JP4006126A patent/JP3004439B2/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3771075A (en) * | 1971-05-25 | 1973-11-06 | Harris Intertype Corp | Microstrip to microstrip transition |
| SU1185440A1 (en) * | 1982-10-01 | 1985-10-15 | Inst Radiotekh Elektron | Band-pass filter |
| JPS61281704A (en) * | 1985-06-07 | 1986-12-12 | Yagi Antenna Co Ltd | Shf band plane antenna |
| JPS63135003A (en) * | 1986-11-13 | 1988-06-07 | コミュニケイションズ サテライト コーポレーション | Printed circuit antenna and manufacture of the same |
| JPH02252304A (en) * | 1989-03-27 | 1990-10-11 | Hitachi Chem Co Ltd | Planer antenna |
| JPH03101507A (en) * | 1989-09-14 | 1991-04-26 | Yagi Antenna Co Ltd | Planer antenna |
| JPH03151702A (en) * | 1989-11-08 | 1991-06-27 | Sony Corp | Plane array antenna |
| JPH05152830A (en) * | 1991-11-26 | 1993-06-18 | Sharp Corp | Microstrip antenna |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006180444A (en) * | 2004-12-22 | 2006-07-06 | Tatung Co | Circularly polarized array antenna |
| EP3686997A4 (en) * | 2017-09-21 | 2021-06-09 | Fujikura Ltd. | Antenna device |
| EP3686998A4 (en) * | 2017-09-21 | 2021-06-09 | Fujikura Ltd. | Antenna device |
| US11108166B2 (en) | 2017-09-21 | 2021-08-31 | Fujikura Ltd. | Antenna device |
| US11223132B2 (en) | 2017-09-21 | 2022-01-11 | Fujikura Ltd. | Antenna device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3004439B2 (en) | 2000-01-31 |
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