JPH03236611A - Phased array antenna system - Google Patents

Phased array antenna system

Info

Publication number
JPH03236611A
JPH03236611A JP2032734A JP3273490A JPH03236611A JP H03236611 A JPH03236611 A JP H03236611A JP 2032734 A JP2032734 A JP 2032734A JP 3273490 A JP3273490 A JP 3273490A JP H03236611 A JPH03236611 A JP H03236611A
Authority
JP
Japan
Prior art keywords
transmitting
digital
phase
transmission
reception
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
Application number
JP2032734A
Other languages
Japanese (ja)
Other versions
JP2993510B2 (en
Inventor
Yasuo Kato
康男 加藤
Masaomi Kawachi
河内 正臣
Terumasa Takahashi
高橋 輝正
Yoshitaka Sasaki
喜隆 佐々木
Yoshihiko Tanaka
田中 慶彦
Yuji Shitomi
蔀 裕司
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.)
Toshiba Corp
Japan Steel Works Ltd
Technical Research and Development Institute of Japan Defence Agency
Original Assignee
Toshiba Corp
Japan Steel Works Ltd
Technical Research and Development Institute of Japan Defence Agency
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 Toshiba Corp, Japan Steel Works Ltd, Technical Research and Development Institute of Japan Defence Agency filed Critical Toshiba Corp
Priority to JP2032734A priority Critical patent/JP2993510B2/en
Publication of JPH03236611A publication Critical patent/JPH03236611A/en
Application granted granted Critical
Publication of JP2993510B2 publication Critical patent/JP2993510B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To improve the reception quality without affecting a transmission pattern by controlling an exciting phase in a different bit number from a transmission system and a reception system. CONSTITUTION:A transmission signal fed to the terminal 33 of a digital transmission reception module is subjected to exciting phase control in 4-bit by a digital phase shifter 31 and power-amplified by a power amplifier 34 and led to a radiation element from a terminal 36 via a circulator 35. Moreover, a reception signal from the radiation element fed to the terminal 36 is fed to a low noise amplifier 38 via circulators 35, 37 and amplified therein and fed to a digital phase shifter 32 whose exciting phase is controlled in 6-bit and phase-controlled and the result is led to a receiver from a terminal 39. That is, the transmission system and the reception system are completely isolated in the digital transmission reception module and higher resolution of the reception system is higher in the exciting phase and the reception quality is improved without affecting the transmission system.

Description

【発明の詳細な説明】 [発明の目的〕 (産業上の利用分野) この発明は、例えば各放射素子毎に送受信モジュールを
用いたアクティブ方式のフェーズドアレイアンテナ装置
に関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an active type phased array antenna device using, for example, a transmitting/receiving module for each radiating element.

(従来の技術) 周知のようにアクティブ方式のフェーズドアレイアンテ
ナ装置にあっては、アレイ状に配置した多数の放射素子
への送信信号、及び各素子からの受信信号の励振を位相
制御し、所望の送信パターン、受信パターンを形成して
いる。この場合、送信系及び受信系について、各放射素
子毎に設けられた送受信モジュール内のデジタル移相器
により励振位相をデジタル制御をしている。第4図に一
般的なアクティブ方式のフェーズドアレイアンテナ装置
の構成を示し、第5図に従来のデジタル位相制御を行う
送受信モジュールの構成を示す。
(Prior Art) As is well known, in an active type phased array antenna device, the excitation of a transmission signal to a large number of radiating elements arranged in an array and a reception signal from each element is controlled in phase to obtain a desired signal. The transmission pattern and reception pattern are formed. In this case, the excitation phase of the transmitting system and the receiving system is digitally controlled by a digital phase shifter in a transmitting/receiving module provided for each radiating element. FIG. 4 shows the configuration of a general active type phased array antenna device, and FIG. 5 shows the configuration of a conventional transmitting/receiving module that performs digital phase control.

第4図において、送信機(励振器)11から出力される
送信信号は送信系給電回路12によってn分配され、そ
れぞれ送受信モジュール131〜13nにより所定の送
信パターンに対応した励振位相制御がなされた後、放射
素子141〜14nに送られる。
In FIG. 4, a transmission signal output from a transmitter (exciter) 11 is divided into n by a transmission system power supply circuit 12, and after each is subjected to excitation phase control corresponding to a predetermined transmission pattern by transmission/reception modules 131 to 13n. , to the radiating elements 141 to 14n.

また、放射素子141〜14nで得られた各受信信号は
それぞれ送受信モジュール131〜13nにより所定の
受信パターンに対応した励振位相制御がなされた後、受
信系給電回路15で合成されて受信111Bに送られる
Further, each reception signal obtained by the radiating elements 141 to 14n is subjected to excitation phase control corresponding to a predetermined reception pattern by the transmission and reception modules 131 to 13n, and then combined by the reception system power supply circuit 15 and sent to the reception 111B. It will be done.

ここで、上記送受信モジュール131〜13n内のデジ
タル移相器はそれぞれ走査制御器17からの制御信号に
よってそれぞれ独立した制御がなされる。
Here, the digital phase shifters in the transmitting/receiving modules 131 to 13n are independently controlled by control signals from the scanning controller 17, respectively.

すなわち、走査制御器17により所望の送信パターン、
受信パターンに応じた各モジュール131〜18nの位
相量を求めて対応する制御信号を生成し、さらにこの制
御信号を走査範囲に応じて変化させることにより、所望
の送信パターン、受信パターンを形成し、任意の範囲で
走査することができる。
That is, the scan controller 17 determines the desired transmission pattern,
By determining the phase amount of each module 131 to 18n according to the reception pattern and generating a corresponding control signal, and further changing this control signal according to the scanning range, a desired transmission pattern and reception pattern are formed, Any range can be scanned.

第5図において、21.22は送信、受信を選択するた
めのスイッチで、各スイッチ21.22を送信側に切換
えた場合、端子23に供給される送信機からの送信信号
がデジタル移相器24に供給され、ここで励振位相の制
御が行われた後、パワーアンプ25で電力増幅され、サ
ーキュレータ2Bを介して端子27より対応する放射素
子へ送られる。また、各スイッチ21.22を受信側に
切換えた場合、端子27に供給される放射素子からの信
号がサーキュレータ26、28を介してローノイズアン
プ29で増幅され、デジタル移相器24に供給され、こ
こで励振位相の制御が行われ、端子30より受信機へ送
られる。
In FIG. 5, 21 and 22 are switches for selecting transmission and reception, and when each switch 21 and 22 is switched to the transmission side, the transmission signal from the transmitter supplied to the terminal 23 is transferred to the digital phase shifter. 24, where the excitation phase is controlled, the power is amplified by the power amplifier 25, and the signal is sent from the terminal 27 to the corresponding radiating element via the circulator 2B. Further, when each switch 21 and 22 is switched to the receiving side, the signal from the radiating element supplied to the terminal 27 is amplified by the low noise amplifier 29 via the circulators 26 and 28, and is supplied to the digital phase shifter 24, Here, the excitation phase is controlled and sent from the terminal 30 to the receiver.

ところで、上記のフェーズドアレイアンテナ装置はレー
ダシステムによく用いられる。このシステムでは、送信
品質よりも受信品質を上げて信号を処理することが多く
、アンテナサイドローブを低くして受信信号の品質を上
げるために、もっばらアンテナ開口における励振振幅分
布によっている。このようなレーダシステムに対し、上
記アンテナ装置、特に送受信モジュールにおいて、例え
ば4ビツトのデジタル移相器を使用している場合、デジ
タル制御ゆえ±11.25度の量子化位相誤差が生じ、
この誤差によってアンテナサイドローブが劣化してしま
い、受信信号の品質向上が図りにくい。これを改善する
ためにはビット数を上げる必要があるが、上述したよう
に従来のアンテナ装置では、特に送受信モジュールでデ
ジタル移相器を送信系、受信系で共用しているため、デ
ジタル移相器のビット数を上げると信号品質を上げる必
要のない送信系まで波及されてしまい、材料費、測定・
試験のための費用等に無駄なコストがかかってしまう。
Incidentally, the phased array antenna device described above is often used in radar systems. In this system, signals are often processed to improve reception quality rather than transmission quality, and in order to lower antenna side lobes and improve reception signal quality, the excitation amplitude distribution in the antenna aperture is mainly used. For such a radar system, if a 4-bit digital phase shifter is used in the antenna device, especially in the transmitter/receiver module, a quantization phase error of ±11.25 degrees will occur due to digital control.
This error causes the antenna sidelobes to deteriorate, making it difficult to improve the quality of the received signal. In order to improve this, it is necessary to increase the number of bits, but as mentioned above, in conventional antenna equipment, the digital phase shifter is shared between the transmitting and receiving systems, especially in the transmitting and receiving module. Increasing the number of bits in the device will affect the transmission system, which does not need to improve signal quality, resulting in lower material costs, measurement and
Unnecessary costs are incurred for testing costs, etc.

(発明が解決しようとする課題) 以上述べたように従来のフェーズドアレイアンテナ装置
では、受信パターンのサイドローブを低くして受信信号
の品質向上を図るために受信系のビット数をあげると、
受信系のみならず送信系のビット数をも上げなければな
らず、必要のない送信パターンにまで波及してコスト増
となる。
(Problems to be Solved by the Invention) As described above, in the conventional phased array antenna device, if the number of bits in the receiving system is increased in order to lower the sidelobes of the receiving pattern and improve the quality of the received signal,
It is necessary to increase the number of bits not only in the receiving system but also in the transmitting system, which extends to unnecessary transmission patterns and increases costs.

この発明は上記の課題を解決するためになされたもので
、コスト増を最小限に抑えて、送信パターンに影響を与
えることなく受信パターンのサイドローブのみを低くす
ることができるフェーズドアレイアンテナ装置を提供す
ることを目的とする。
This invention was made to solve the above problems, and provides a phased array antenna device that can minimize cost increase and lower only the sidelobes of the reception pattern without affecting the transmission pattern. The purpose is to provide.

[発明の構成コ (課題を解決するための手段) 上記課題を解決するためにこの発明に係るフェーズドア
レイアンテナ装置は、 (1)複数の放射素子をアレイ状に配置し、各素子への
送信信号、各素子からの受信信号を位相制御して任意の
送信パターン、受信パターンを生成するフェーズドアレ
イアンテナ装置において、送信系と受信系とで互いに異
なるビット数で励振位相を制御するようにしたことを第
1の特徴とし、(2)第1の特徴とする構成において、
前記送信系及び受信系は各放射素子毎に共通の送受信モ
ジュールを用いて構成し、このデジタル送受信モジュー
ルは互いにビット数の異なる2つのデジタル移相器を備
え、一方のデジタル移相器で送信系の励振位相を制御し
、他方のデジタル移相器で受信系の励振位相を制御する
ことを第2の特徴とする。
[Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, the phased array antenna device according to the present invention includes: (1) arranging a plurality of radiating elements in an array, and transmitting data to each element. In a phased array antenna device that generates arbitrary transmission patterns and reception patterns by controlling the phase of signals and reception signals from each element, the excitation phase is controlled using mutually different numbers of bits in the transmission system and reception system. (2) In a configuration having the first feature as the first feature,
The transmitting system and the receiving system are configured using a common transmitting/receiving module for each radiating element, and this digital transmitting/receiving module is equipped with two digital phase shifters having different bit numbers, and one digital phase shifter is used to control the transmitting system. The second feature is that the excitation phase of the receiving system is controlled by the other digital phase shifter.

また、 (3)複数の放射素子をアレイ状に配置し、各素子への
送信信号、各素子からの受信信号を位相制御して任意の
送信パターン、受信パターンを生成するフェーズドアレ
イアンテナ装置において、送信系と受信系とで互いに異
なるビット数で励振位相を制御し、かつ、送信系と受信
系とで互いに異なるビット数で励振振幅を制御するよう
にしたことを第3の特徴とし、 (4)第3の特徴とする構成において、前記送信系及び
受信系は各放射素子毎に共通の送受信モジュールを用い
て構成し、この送受信モジュールはそれぞれ互いにビッ
ト数の異なる2つのデジタル移相器及び2つのデジタル
アッテネータを備え、−方のデジタル移相器で送信系の
励振位相を制御し、他方のデジタル移相器で受信系の励
振位相を制御し、一方のデジタルアッテネータで送信系
の励振振幅を制御し、他方のデジタルアッテネータで受
信系の励振位相を制御することを第4の特徴とする。
(3) In a phased array antenna device that arranges a plurality of radiating elements in an array and controls the phase of the transmission signal to each element and the reception signal from each element to generate arbitrary transmission patterns and reception patterns, The third feature is that the excitation phase is controlled by different numbers of bits in the transmitting system and the receiving system, and the excitation amplitude is controlled by different numbers of bits in the transmitting system and the receiving system, (4 ) In the third characteristic configuration, the transmitting system and the receiving system are configured using a common transmitting/receiving module for each radiating element, and each of the transmitting/receiving modules includes two digital phase shifters and two digital phase shifters each having a different number of bits. One digital phase shifter controls the excitation phase of the transmitting system, the other digital phase shifter controls the excitation phase of the receiving system, and one digital attenuator controls the excitation amplitude of the transmitting system. The fourth feature is that the other digital attenuator controls the excitation phase of the receiving system.

(作用) 第1の特徴とする構成では、送信系と受信系とで異なる
ビット数で励振位相を制御するようにして送信系と受信
系を独立させ、受信系のみ高いビット数で励振位相を制
御して受信パターンのサイドロープを低くし、受信品質
を向上させる。
(Function) In the first characteristic configuration, the transmitting system and the receiving system are made independent by controlling the excitation phase with a different number of bits in the transmitting system and the receiving system, and only the receiving system controls the excitation phase with a high number of bits. control to lower the side lobes of the reception pattern and improve reception quality.

第2の特徴とする構成では、デジタル送受信モジュール
において、互いにビット数の異なる2つのデジタル移相
器を送信系、受信系に割当てて両者を独立させ、ビット
数の多い方のデジタル移相器で受信系の励振位相を制御
して、受信パターンのサイドローブを低くし、受信品質
を向上させる。
In the second feature, in the digital transmitting/receiving module, two digital phase shifters with different numbers of bits are assigned to the transmitting system and the receiving system to make them independent, and the digital phase shifter with the larger number of bits is used as the digital phase shifter. The excitation phase of the receiving system is controlled to lower the sidelobes of the receiving pattern and improve the receiving quality.

第3の特徴とする構成では、送信系と受信系とで異なる
ビット数で励振位相及び励振振幅を制御するようにして
送信系と受信系を独立させ、受信系のみ高いビット数で
励振位相、励振振幅を制御して受信パターンのサイドロ
ーブを低くし、受信品質を向上させる。
In the configuration characterized by the third feature, the transmitting system and the receiving system are made independent by controlling the excitation phase and excitation amplitude using different numbers of bits in the transmitting system and the receiving system, and only the receiving system controls the excitation phase and excitation amplitude with a higher number of bits. Control the excitation amplitude to lower the sidelobes of the reception pattern and improve reception quality.

第4の特徴とする構成では、デジタル送受信モジュール
において、互いにビット数の異なる2つのデジタル移相
器、2つのデジタルアッテネータを送信系、受信系に割
当てて両者を独立させ、ビット数の多い方のデジタル移
相器で受信系の励振位相を制御し、かつビット数の多い
方のデジタルアッテネータで受信系の励振振幅を制御し
て、受信パターンのサイドロープを低くし、受信品質を
向上させる。
In the configuration characterized by the fourth characteristic, in the digital transmitting/receiving module, two digital phase shifters and two digital attenuators with different numbers of bits are assigned to the transmitting system and the receiving system to make them independent, and the one with the larger number of bits is assigned to the transmitting system and the receiving system. A digital phase shifter controls the excitation phase of the receiving system, and a digital attenuator with a larger number of bits controls the excitation amplitude of the receiving system, thereby lowering the side lobes of the receiving pattern and improving reception quality.

(実施例) 以下、第1図乃至第5図を参照してこの発明の一実施例
を説明する。
(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

第1図は第4図に示したアクティブ方式のフェーズドア
レイアンテナ装置に好適する送受信モジュールの構成を
示すものである。このモジュールは互いにビット数の異
なる第1、第2のデジタル移相器31.32を備え、ビ
ット数の少ない方のデジタル移相器(ここでは4ビツト
)31を送信系に用い、ビット数の多い方のデジタル移
相器(ここでは6ビツト)32を受信系に用いて構成さ
れる。すなわち、端子33に供給される送信信号は第1
のデジタル移相器31により4ビツトで励振位相の制御
を受け、パワーアンプ34により電力増幅された後、サ
ーキュレータ35を介して、端子86から放射素子ヘ導
出される。また、端子36に供給される放射素子からの
受信信号はサーキュレータ35.37を介してローノイ
ズアンプ88に供給され、ここで増幅され、励振位相が
6ビツトで制御される第2のデジタル移相器32に供給
されて位相の制御を受け、端子39から受信機へ導出さ
れる。
FIG. 1 shows the configuration of a transmitting/receiving module suitable for the active type phased array antenna device shown in FIG. 4. This module is equipped with first and second digital phase shifters 31 and 32 having different numbers of bits, and uses the digital phase shifter 31 with the smaller number of bits (here, 4 bits) in the transmission system, The reception system is constructed using the digital phase shifter (here, 6 bits) 32, which is larger in number. That is, the transmission signal supplied to the terminal 33 is the first
The excitation phase is controlled by a digital phase shifter 31 using 4 bits, the power is amplified by a power amplifier 34, and then the signal is led out from a terminal 86 to a radiating element via a circulator 35. In addition, the received signal from the radiating element supplied to the terminal 36 is supplied to the low noise amplifier 88 via the circulator 35, 37, where it is amplified and driven by a second digital phase shifter whose excitation phase is controlled by 6 bits. 32 and undergoes phase control, and is led out from a terminal 39 to the receiver.

すなわち、このデジタル送受信モジュールでは、送信系
と受信系が完全に分離しており、位相制御が送信系では
4ビツト構成、受信系では6ビツト構成となっている。
That is, in this digital transmitting/receiving module, the transmitting system and the receiving system are completely separated, and the phase control has a 4-bit configuration in the transmitting system and a 6-bit configuration in the receiving system.

このため、励振位相の制御は受信系の方が分解能が高く
、送信系に比べて細かく制御することができる。したが
って、受信パターンの形成において、送信系に影響を与
えることなくアンテナサイドローブを低減することがで
き、これによって受信品質を向上させることができる。
Therefore, the excitation phase can be controlled more precisely in the receiving system than in the transmitting system because it has higher resolution. Therefore, in forming a reception pattern, antenna side lobes can be reduced without affecting the transmission system, thereby improving reception quality.

なお、この構成ではデジタル移相器が2個必要になるが
、送信・受信を切換えるためのスイッチが不要となるの
で部品点数が少なくなり、結果的にアンテナ装置全体の
コストを低減し、最小限に抑えることができる。
Note that this configuration requires two digital phase shifters, but since there is no need for a switch to switch between transmission and reception, the number of parts is reduced, and as a result, the cost of the entire antenna device is reduced and the cost is reduced to a minimum. can be suppressed to

第2図はこの発明に係る他の実施例をふすもので、同じ
く第4図に示したアクティブ方式のフェーズドアレイア
ンテナ装置に好適する送受信モジュールの構成を示すも
のである。第2図において、第1図と同一部分には同一
符号を付してその説明を省略する。このモジュールは互
いにビット数の異なる第1、第2のデジタル移相器31
.32を備えると共に、互いにビット数の異なる第1、
第2のデジタルアッテネータ40.41を備え、ビット
数の少ない方のデジタルアッテネータ(ここでは4ビツ
ト) 31を送信系に用い、ビット数の多い方のデジタ
ルアッテネータ(ここでは6ビツト)32を受信系に用
いて構成される。
FIG. 2 shows another embodiment of the present invention, and shows the configuration of a transmitting/receiving module suitable for the active phased array antenna device shown in FIG. 4. In FIG. 2, the same parts as in FIG. 1 are given the same reference numerals, and the explanation thereof will be omitted. This module includes first and second digital phase shifters 31 having different bit numbers.
.. 32, and the first one having a different number of bits,
A second digital attenuator 40, 41 is provided, in which the digital attenuator 31 with the smaller number of bits (here 4 bits) is used for the transmission system, and the digital attenuator 32 with the larger number of bits (here 6 bits) is used for the receiving system. It is configured for use in

このように送信系と受信系を独立させ、デジタルアッテ
ネータを含めて受信系のビット数を上げることにより、
励振位相制御と同時に励振振幅制御についてもきめ細か
く制御することができ、これによってアンテナサイドロ
ーブの低減を図り、受信品質を一層向上させることがで
きる。
By making the transmitting system and receiving system independent in this way and increasing the number of bits in the receiving system by including a digital attenuator,
Simultaneously with excitation phase control, excitation amplitude control can be finely controlled, thereby reducing antenna side lobes and further improving reception quality.

ところで、この発明は上記のように送受信モジュールへ
の適用に限定されるものではない。例えば第3図に示す
ように、送受信モジュール131〜13n内で送信系の
み4ビツトのデジタル移相器を設け、また受信系で得ら
れた受信信号をビーム形成器42に送り、ここで各モジ
ュール131−13nからの信号についてデジタル位相
制御、デジタル振幅制御を行うことにより任意の受信パ
ターンを形成し、受信機1Bに送出するように構成する
ことができる。この場合も、送信系と受信系とが独立し
ており、受信系のみビット数を上げることができるので
、アンテナサイドローブの低減、受信品質の向上を図る
ことができる。このように、デジタル移相器やデジタル
アッテネータは必ずしもモジュールに内蔵させていなく
てもよく、さらに、例えば必ずしもRF(高周波帯)段
で位相制御、振幅制御を行う必要はなく、少なくともビ
ームパターンの形成直前までに行われればよい。このこ
とは送信系についても同様である。
By the way, the present invention is not limited to application to the transmitting/receiving module as described above. For example, as shown in FIG. 3, a 4-bit digital phase shifter is provided only in the transmitting system in the transmitting/receiving modules 131 to 13n, and the received signal obtained in the receiving system is sent to the beamformer 42, where it is sent to each module. By performing digital phase control and digital amplitude control on the signals from 131-13n, it is possible to form an arbitrary reception pattern and send it to the receiver 1B. In this case as well, the transmitting system and the receiving system are independent, and the number of bits can be increased only in the receiving system, so it is possible to reduce antenna side lobes and improve reception quality. In this way, the digital phase shifter and digital attenuator do not necessarily need to be built into the module, and furthermore, it is not always necessary to perform phase control and amplitude control at the RF (high frequency band) stage, but at least to form a beam pattern. It should be done just before. This also applies to the transmission system.

以上の他、送信モジュールと受信モジュールを別々に設
けてアンテナ装置を構成したり、送受信モジュール、送
信モジュール、受信モジュールの全て、もしくはこれら
を混在させてアンテナ装置を構成しても同様に実施可能
である。さらに、例えば振幅制御については、デジタル
アッテネータを送受信モジュールに内蔵させなくても、
その枠を外して送信系、受信系のどこかに介在させるよ
うにしてもよい。また、この振幅制御はデジタルアッテ
ネータによらず、送信系のパワーアンプ、受信系のロー
ノイズアンプの利得制御であっても同様の効果が得られ
る。
In addition to the above, it is also possible to construct an antenna device by separately providing a transmitting module and a receiving module, or by constructing an antenna device by constructing a transmitting/receiving module, all of a transmitting module, a receiving module, or a mixture of these. be. Furthermore, for example, for amplitude control, it is possible to
It is also possible to remove this frame and interpose it somewhere in the transmission system or reception system. Moreover, this amplitude control is not based on a digital attenuator, but the same effect can be obtained even when the gain is controlled on a transmitting system power amplifier and a receiving system low noise amplifier.

[発明の効果] 以上のようにこの発明によれば、コスト増を最小限に抑
えて、送信パターンに影響を与えることなく受信パター
ンのサイドローブのみを低くすることができ、これによ
って受信品質を向上させることができるフェーズドアレ
イアンテナ装置を提供することができる。
[Effects of the Invention] As described above, according to the present invention, it is possible to minimize the cost increase and lower only the sidelobes of the reception pattern without affecting the transmission pattern, thereby improving the reception quality. It is possible to provide a phased array antenna device that can be improved.

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

第1図はこの発明の一実施例なるフェーズドアレイアン
テナ装置の送受信モジュールの構成を示すブロック回路
図、第2図はこの発明に係る他の実施例なる送受信モジ
ュールの構成を示すブロック回路図、第3図はこの発明
に係る他の実施例なるフェーズドアレイアンテナ装置の
構成を示すブロック回路図、第4図は従来のフェーズド
アレイアンテナ装置の構成を示すブロック回路図、第5
図は第4図のアンテナ装置に用いられる送受信モジュー
ルの構成を示すブロック回路図である。 11・・・送信機(励振器)、12・・・送信系給電回
路、131〜13n−・・送受信モジュール、141−
14n −・・放射素子、15・・・受信系給電回路、
16・・・受信機、17・・・走査制御器、21.22
・・・デジタルスイッチ、24・・・デジタル移相器、
25・・・デジタルパワーアンプ、26、28・・・サ
ーキュレータ、29・・・ローノイズアンプ、31、3
2・・・デジタル移相器、34・・・デジタルパワーア
ンプ、35.37・・・サーキュレータ、38・・・ロ
ーノイズアンプ、40.41・・・デジタルアッテネー
タ、42・・・ビーム形成器。
FIG. 1 is a block circuit diagram showing the configuration of a transmitting/receiving module of a phased array antenna device according to an embodiment of the present invention, and FIG. 2 is a block circuit diagram showing the configuration of a transmitting/receiving module according to another embodiment of the present invention. 3 is a block circuit diagram showing the configuration of a phased array antenna device according to another embodiment of the present invention, FIG. 4 is a block circuit diagram showing the configuration of a conventional phased array antenna device, and FIG.
This figure is a block circuit diagram showing the configuration of a transmitting/receiving module used in the antenna device of FIG. 4. 11... Transmitter (exciter), 12... Transmission system power supply circuit, 131-13n-... Transmission/reception module, 141-
14n - radiating element, 15... receiving system power supply circuit,
16...Receiver, 17...Scanning controller, 21.22
...Digital switch, 24...Digital phase shifter,
25... Digital power amplifier, 26, 28... Circulator, 29... Low noise amplifier, 31, 3
2...Digital phase shifter, 34...Digital power amplifier, 35.37...Circulator, 38...Low noise amplifier, 40.41...Digital attenuator, 42...Beam former.

Claims (4)

【特許請求の範囲】[Claims] (1)複数の放射素子をアレイ状に配置し、各素子への
送信信号、各素子からの受信信号を位相制御して任意の
送信パターン、受信パターンを生成するフェーズドアレ
イアンテナ装置において、送信系と受信系とで互いに異
なるビット数で励振位相を制御するようにしたことを特
徴とするフェーズドアレイアンテナ装置。
(1) In a phased array antenna device that arranges multiple radiating elements in an array and controls the phase of the transmitted signal to each element and the received signal from each element to generate arbitrary transmission patterns and reception patterns, the transmission system 1. A phased array antenna device characterized in that the excitation phase is controlled using different numbers of bits in the receiving system and the receiving system.
(2)前記送信系及び受信系は各放射素子毎に共通の送
受信モジュールを用いて構成し、この送受信モジュール
は互いにビット数の異なる2つのデジタル移相器を備え
、一方のデジタル移相器で送信系の励振位相を制御し、
他方のデジタル移相器で受信系の励振位相を制御するこ
とを特徴とする請求項1記載のフェーズドアレイアンテ
ナ装置。
(2) The transmitting system and the receiving system are configured using a common transmitting/receiving module for each radiating element, and this transmitting/receiving module is equipped with two digital phase shifters having different bit numbers, and one digital phase shifter is used. Controls the excitation phase of the transmission system,
2. The phased array antenna device according to claim 1, wherein the other digital phase shifter controls the excitation phase of the receiving system.
(3)複数の放射素子をアレイ状に配置し、各素子への
送信信号、各素子からの受信信号を位相制御して任意の
送信パターン、受信パターンを生成するフェーズドアレ
イアンテナ装置において、送信系と受信系とで互いに異
なるビット数で励振位相を制御し、かつ、送信系と受信
系とで互いに異なるビット数で励振振幅を制御するよう
にしたことを特徴とするフェーズドアレイアンテナ装置
(3) In a phased array antenna device that arranges a plurality of radiating elements in an array and controls the phase of the transmission signal to each element and the reception signal from each element to generate arbitrary transmission patterns and reception patterns, the transmission system A phased array antenna device characterized in that the excitation phase is controlled by different numbers of bits in the transmitting system and the receiving system, and the excitation amplitude is controlled by different numbers of bits in the transmitting system and the receiving system.
(4)前記送信系及び受信系は各放射素子毎に共通の送
受信モジュールを用いて構成し、この送受信モジュール
はそれぞれ互いにビット数の異なる2つのデジタル移相
器及び2つのデジタルアッテネータを備え、一方のデジ
タル移相器で送信系の励振位相を制御し、他方のデジタ
ル移相器で受信系の励振位相を制御し、一方のデジタル
アッテネータで送信系の励振振幅を制御し、他方のデジ
タルアッテネータで受信系の励振位相を制御することを
特徴とする請求項3記載のフェーズドアレイアンテナ装
置。
(4) The transmitting system and the receiving system are configured using a common transmitting/receiving module for each radiating element, and each of the transmitting/receiving modules is equipped with two digital phase shifters and two digital attenuators each having a different number of bits. One digital phase shifter controls the excitation phase of the transmitting system, the other digital phase shifter controls the excitation phase of the receiving system, one digital attenuator controls the excitation amplitude of the transmitting system, and the other digital attenuator controls the excitation phase of the transmitting system. 4. The phased array antenna device according to claim 3, wherein the phased array antenna device controls the excitation phase of the receiving system.
JP2032734A 1990-02-14 1990-02-14 Phased array antenna device Expired - Lifetime JP2993510B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2032734A JP2993510B2 (en) 1990-02-14 1990-02-14 Phased array antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2032734A JP2993510B2 (en) 1990-02-14 1990-02-14 Phased array antenna device

Publications (2)

Publication Number Publication Date
JPH03236611A true JPH03236611A (en) 1991-10-22
JP2993510B2 JP2993510B2 (en) 1999-12-20

Family

ID=12367067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2032734A Expired - Lifetime JP2993510B2 (en) 1990-02-14 1990-02-14 Phased array antenna device

Country Status (1)

Country Link
JP (1) JP2993510B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009159430A (en) * 2007-12-27 2009-07-16 Mitsubishi Electric Corp Antenna device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009159430A (en) * 2007-12-27 2009-07-16 Mitsubishi Electric Corp Antenna device

Also Published As

Publication number Publication date
JP2993510B2 (en) 1999-12-20

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