JPS6037802A - Multi-beam antenna - Google Patents

Multi-beam antenna

Info

Publication number
JPS6037802A
JPS6037802A JP14622483A JP14622483A JPS6037802A JP S6037802 A JPS6037802 A JP S6037802A JP 14622483 A JP14622483 A JP 14622483A JP 14622483 A JP14622483 A JP 14622483A JP S6037802 A JPS6037802 A JP S6037802A
Authority
JP
Japan
Prior art keywords
antenna
forming circuit
beam forming
frequency band
constitution
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.)
Pending
Application number
JP14622483A
Other languages
Japanese (ja)
Inventor
Seizo Hirose
広瀬　晴三
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP14622483A priority Critical patent/JPS6037802A/en
Publication of JPS6037802A publication Critical patent/JPS6037802A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To simplify the constitution and also to make the phase stable by providing a low noise amplifier amplifying a reception signal of an array antenna element and a beam forming circuit and constituting the system, from the antenna up to the beam forming circuit with the same frequency band. CONSTITUTION:A reception signal of reception array antenna elements A1-AN is amplified by low noise amplifiers B1-BN. The beam forming circuit E forming simultaneously plural beams is connected to the output of the amplifiers. Then the system from the antenna A to the beam forming circuit E is constituted with the same frequency band. Thus, a large-sized multi-beam antenna is constituted with simple constitution.

Description

【発明の詳細な説明】 この発明はアレー形のマルチビームアンテナの改良に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of an array type multi-beam antenna.

まず従来のマルチビームアンテナの構成について受信用
アンテナの例を図を用いて簡単に説明する。First, the configuration of a conventional multi-beam antenna will be briefly described using a diagram as an example of a receiving antenna.

第１図において、Ａ１〜ＡＮ＃ｊ：受信用アレーアンテ
ナ素子＋　Ｂｌ〜ＢＮは低雑音増幅器、ｏｌ−ＯＮは周
波数変換器＋　ＤＩ〜ＤＮは中間周波増幅器、Ｅはビー
ム形成回路、Ｆは電力分配器、Ｇは局部発振器である。In Figure 1, A1 to AN#j: receiving array antenna element + Bl to BN are low noise amplifiers, ol-ON is a frequency converter + DI to DN are intermediate frequency amplifiers, E is a beam forming circuit, and F is power The divider, G, is a local oscillator.

従来のビーム形成回路Ｅは、設計の容易さ及び性能の安
定性を考慮し、主に中間周波帯の抵抗マトリクス型が用
いられてｂる。このビーム形成回路Ｅを用いて、マルチ
ビームアンテナを構成する場合には、アンテナの周波数
を一但。In the conventional beam forming circuit E, a resistor matrix type in an intermediate frequency band is mainly used in consideration of ease of design and stability of performance. When constructing a multi-beam antenna using this beam forming circuit E, the frequency of the antenna must be changed.

中間周波数帯に変換する必要があるため、第１図に示す
ように９周波数変換器０１〜（］Ｎ９局部発振器Ｇ及び
電力分配器Ｆの付加回路を必要とする。しかし、この構
成においては、アンテナ素子数Ｎが多くなると、上記回
路の占める割合が大きくなりシステムが大型化すること
、−！た。Since it is necessary to convert to an intermediate frequency band, additional circuits of nine frequency converters 01 to (]N9 local oscillators G and power divider F are required as shown in FIG. 1. However, in this configuration, As the number N of antenna elements increases, the proportion occupied by the above circuit increases and the system becomes larger.

大型化に伴い局部発振器Ｇ、電力分配器Ｆ及び周波数変
換器０１〜ＯＮ間の接続が長くなり９位相が不安定にな
るという欠点があった。As the size increases, the connections between the local oscillator G, the power divider F, and the frequency converters 01 to ON become longer, resulting in a drawback that the nine phases become unstable.

この発明は、これらの欠点を除去するだめのものであり
、以下に図面を用いてＢ明する。第２図は、この発明に
よるマルチビームアンテナの構成を示したもので、第２
図においてＡ＋　−ＡＮは、受信用アレーアンテナ素子
、Ｂ＋−Ｔｋは低雑音増幅器、Ｅはビーム形成回路であ
る。この発明におけるビーム形成回路Ｅは、従来のもの
が中間周波数帯を用いてｂたのに対し、アンテナ周波数
そのままで、ビーム形成を行うことができるものである
。このビーム形成回路Ｅの構成の一例としては、方向性
結合器と移相器を組合せた第３図の形式のものが考えら
れる。この種のビーム形成回路は近年のマイクロ波１０
回路技術の進捗の結果もたらされたものであシ、小型軽
量なビーム形成回路を製作することが可能である。第３
図において、Ｈ１ｌ〜ＨＩＪ及びＭｌｌ〜ＭＩＪは方向
性結合器、に１！〜ＫＩＪは移相器である０以上述べた
ように、この発明による構成のマルチビームアンテナに
おいては、簡単な構成で、大型のマルチビームアンテナ
も構成することが可能となる・ 以上の実施例は、受信用アンテナを示したものでちるが
、原理上送信用アンテナでも有効なThe present invention is intended to eliminate these drawbacks, and will be explained below with reference to the drawings. Figure 2 shows the configuration of the multi-beam antenna according to the present invention.
In the figure, A+-AN is a receiving array antenna element, B+-Tk is a low noise amplifier, and E is a beam forming circuit. The beam forming circuit E according to the present invention can perform beam forming using the antenna frequency as is, whereas the conventional circuit uses an intermediate frequency band. An example of the configuration of this beam forming circuit E is of the type shown in FIG. 3, which combines a directional coupler and a phase shifter. This type of beam forming circuit is used in recent microwave 10
This is a result of advances in circuit technology, and it is now possible to fabricate small and lightweight beamforming circuits. Third
In the figure, H1l~HIJ and Mll~MIJ are directional couplers, and 1! ~KIJ is a phase shifter 0 As mentioned above, in the multi-beam antenna configured according to the present invention, it is possible to configure a large-sized multi-beam antenna with a simple configuration. , shows a receiving antenna, but in principle it is also effective for a transmitting antenna.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、従来のマルチビームアンテナの構成を示す図
、第２図は、この発明によるマルチビームアンテナの構
成を示す図、第３図は、ビーム形成回路の一構成例を示
す図であり９図中Ａ１〜ＡＮはアレーアンテナ素子、Ｂ
ｌ−ＢＮは低雑音増幅器、ＯＨ−（Ｎは周波数変換器、
Ｄ１〜珈は中間周波増幅器、Ｅはビーム形成回路、Ｆは
電力分配器、Ｇは局部発振器＋　Ｈｌｌ−ＨＩＪ及びＭ
ｌｌ〜ＭｉＪは方向性結合器、Ｋｌｌ〜Ｋｒｓは移相器
である。 なお２図中同一あるいは相当部分には同一符号を付して
示しである。 代理人　大岩増雄 第　２　図 第　３　図FIG. 1 is a diagram showing the configuration of a conventional multi-beam antenna, FIG. 2 is a diagram showing the configuration of a multi-beam antenna according to the present invention, and FIG. 3 is a diagram showing an example of the configuration of a beam forming circuit. 9 In the figure, A1 to AN are array antenna elements, B
l-BN is a low noise amplifier, OH-(N is a frequency converter,
D1~C are intermediate frequency amplifiers, E is a beam forming circuit, F is a power divider, G is a local oscillator + Hll-HIJ and M
ll to MiJ are directional couplers, and Kll to Krs are phase shifters. Note that the same or corresponding parts in the two figures are designated by the same reference numerals. Agent Masuo Oiwa Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] アレーアンテナを用いたマルチビームアンテナにおいて
、アレーアンテナ素子と、上記アレーアンテナ素子の受
信信号を増幅する低雑音増幅器と、上記増幅器出力に接
続され、複数のビームを同時に形成するビーム形成回路
とを有し上記アンテナからビーム形成回路までを同一周
波数帯で構成したことを特徴とするマルチビームアンテ
ナ。A multi-beam antenna using an array antenna includes an array antenna element, a low-noise amplifier that amplifies the received signal of the array antenna element, and a beam forming circuit that is connected to the output of the amplifier and forms multiple beams simultaneously. A multi-beam antenna characterized in that the antenna from the antenna to the beam forming circuit are configured in the same frequency band.
JP14622483A 1983-08-10 1983-08-10 Multi-beam antenna Pending JPS6037802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14622483A JPS6037802A (en) 1983-08-10 1983-08-10 Multi-beam antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14622483A JPS6037802A (en) 1983-08-10 1983-08-10 Multi-beam antenna

Publications (1)

Publication Number Publication Date
JPS6037802A true JPS6037802A (en) 1985-02-27

Family

ID=15402915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14622483A Pending JPS6037802A (en) 1983-08-10 1983-08-10 Multi-beam antenna

Country Status (1)

Country Link
JP (1) JPS6037802A (en)

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