JPH01305708A - Electric power amplifier - Google Patents

Abstract

PURPOSE:To detect whether the action of an electric power amplifier is normal or abnormal and to discriminate a fault amplification system when the amplifier is abnormal by setting plural comparison detection levels to values corresponding to the outputs of respective amplifier systems when they are abnormal. CONSTITUTION:Action is supervised by inputting monitor signals from a detector 8 to comparators 9-11 whose detection levels respectively differ. In the setting of respective detection levels of the comparators 9-11, the detection level of the comparator 9 corresponds to a state where one of amplification elements 3 has a fault, the detection level of the comparator 10 to the state where one of amplification elements 2 has the fault, and the detection level of the comparator 11 to the state where an amplification element 1 has the fault. The amplitude of the monitor signals are always compared by the comparators 9-11. The fault part of the amplification system in three levels is partitioned by the difference of the comparator which detects the fault when the amplification element has the fault.

Description

Translated fromJapanese

【発明の詳細な説明】〔産業上の利用分野〕本発明は電力増幅器に関し９％に高周波電力増幅素子の
出力を多並列合成して出力する電力増幅器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power amplifier, and relates to a power amplifier that combines the outputs of high-frequency power amplification elements into 9% in parallel and outputs the result.

〔従来の技術〕[Conventional technology]

従来、高周波電力増幅素子の出力を多並列合成して出力
す、るこの種の電力増幅器は、第２図にその一例を示す
如く、たとえば８出力を多並列合成する場合には、高周
波電力増幅素子としての増幅素子１．増幅素子２．増幅
素子３を利用し、最終電力増幅段の増幅素子３０８個の
出力を８合成器６で多並列合成して出力信号とし、出力
端子７０１から出力している。８個の増＠索子３は２個
の４分配器５の出力を受け、筐たＣれら２個の分配器の
人力は２個の増幅素子２の出力をそれぞれ２分配器４か
ら受け、さらに２分配器４の入力は、入力端子１０１を
介して人力する人力信号を増＠素子１で増幅して得られ
る。Conventionally, this type of power amplifier synthesizes the outputs of high-frequency power amplification elements in parallel and outputs the result.As shown in FIG. 2, for example, when combining eight outputs in parallel, Amplifying element as an element 1. Amplifying element 2. Using the amplifying element 3, the outputs of 308 amplifying elements of the final power amplifying stage are multi-parallel synthesized by an 8 combiner 6 to form an output signal, which is output from an output terminal 701. The eight amplifiers 3 receive the outputs of the two 4-way dividers 5, and the power of these two dividers receives the outputs of the two amplifier elements 2 from the 2-way divider 4, respectively. Furthermore, the input of the two-way divider 4 is obtained by amplifying the human input signal input via the input terminal 101 with the amplification element 1.

このような電力増幅器の動作監視は、８合成器６の出力
する出力信号の一部をカップラーｑで抽出し、これを検
波器８で検波したものをモニタ信号として比較器１２に
供給する。比較器１２は。To monitor the operation of the power amplifier in this manner, a part of the output signal output from the 8-combiner 6 is extracted by the coupler q, detected by the detector 8, and supplied to the comparator 12 as a monitor signal. The comparator 12 is.

人力したモニタ信号を基準値とレベル比較し、動作の正
常か異常を検出していた。比較器１２における基準値は
、電力増＠器の正常動作状態における出力信号にもとづ
いて設定される。The level of the manually generated monitor signal was compared with a reference value to detect whether the operation was normal or abnormal. The reference value in the comparator 12 is set based on the output signal of the power booster under normal operating conditions.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来の電力増幅器は、動作の監視の範囲が出力
電力の正常、異常の判定だけにとどまっていたため、故
障時に増幅器内部のどの系統の故障であるかの判断がで
きないという欠点がある。The above-mentioned conventional power amplifier has the disadvantage that when a failure occurs, it is not possible to determine which system within the amplifier is at fault because the scope of operation monitoring is limited to determining whether the output power is normal or abnormal.

本発明の目的は上述した欠点を除去し、電力増鳴器内部
の故障系統の判断も含む動作モニタ可能な電力増幅器を
提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a power amplifier whose operation can be monitored, including determination of faulty systems within the power amplifier.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の電力増幅器は、高周波電力増幅素子の出力を多
並列合成して出力する′成力増幅器において、出力電力
の一部を抽出して動作監視のモニタ信号を発生する手段
と、前記モニタ信号のレベルを増幅系統ごとにそれぞれ
異なる故障時出力に対応した複数の検出レベルで検出す
る手段とを備えて構成される。The power amplifier of the present invention is a power amplifier that synthesizes the outputs of high-frequency power amplification elements in parallel and outputs the resultant output, and includes a means for extracting a part of the output power to generate a monitor signal for monitoring operation, and a means for generating a monitor signal for monitoring the operation. and a means for detecting the level at a plurality of detection levels corresponding to different failure outputs for each amplification system.

〔実施例〕〔Example〕

次に１図面を参照して本発明の詳細な説明する。The present invention will now be described in detail with reference to one drawing.

第１図は本発明の一実施例の構成図であシ、高周波電力
増幅素子を利用し電力増幅器を構成する増幅素子１，２
および３．２分配器４，４分配器５．８合成器６．出力
の一部を抽出して動作監視のモニタ信号を発生する手段
としてのカップラー７および検波器８のほか、モニタ信
号のレベルを複数の互いに異なる検出レベル、本実施例
では３個の検出レベルで検出するための一点鎖線で示す
３個の比較器９〜１１を備えて構成される。FIG. 1 is a block diagram of an embodiment of the present invention, in which amplifying elements 1 and 2 constitute a power amplifier using high-frequency power amplifying elements.
and 3.2 distributor 4, 4 distributor 5.8 combiner 6. In addition to the coupler 7 and the detector 8 as means for extracting a part of the output and generating a monitor signal for operation monitoring, the level of the monitor signal is set at a plurality of mutually different detection levels, three detection levels in this embodiment. It is configured with three comparators 9 to 11 shown by dashed lines for detection.

上述した構成要素中、記号１の増幅素子から記号８の検
波器までは第２図に示す従来例の同一記号のものと同一
内容であるので、これらに関する詳細な説明は省略する
。Among the above-mentioned components, the components from the amplifying element with symbol 1 to the detector with symbol 8 have the same contents as those with the same symbols in the conventional example shown in FIG. 2, so detailed explanations regarding these will be omitted.

次に第１図の実施例の動作について説明する。Next, the operation of the embodiment shown in FIG. 1 will be explained.

第１図に示す実施例は、第２図に示す従来例と同じく、
増幅系統は、増＠素子１〜３と、電力分配器４．５と電
力合成器６によシ構成される３段増幅系統の終段８並列
合成タイプである。The embodiment shown in FIG. 1 is similar to the conventional example shown in FIG.
The amplification system is a final-stage 8-parallel combination type of a three-stage amplification system consisting of amplifier elements 1 to 3, a power divider 4.5, and a power combiner 6.

動作監視は、検波器８からのモニタ信号を互いに検出レ
ベルの異なる比較器９〜１１に人力することによシ行な
う。Operation monitoring is performed by manually inputting a monitor signal from the detector 8 to comparators 9 to 11 having different detection levels.

８個の電力を合成する８合成器６の８つの人力ボート間
が完全に絶縁されている限シ、増幅素子３の故障数と出
力電力の低下は第３図に示す特性を持つ２０１０ｇ　ｔ
ｏ　（１４）で示される曲線となる。As long as the eight power boats of the eight combiner 6 that combine the eight power sources are completely insulated, the number of failures of the amplifying element 3 and the decrease in output power will be 2010 g t with the characteristics shown in Fig. 3.
o (14).

ここで、比較器９〜１１の検出レベルを次のように設定
しておく。Here, the detection levels of the comparators 9 to 11 are set as follows.

すなわち、比較器９の検出レベルは第３図のＡ点で、こ
れは故障ボート数（Ｎ）が１．つまシ増幅素子３が１個
故障した状態に対応する。That is, the detection level of the comparator 9 is point A in FIG. 3, which means that the number of failed boats (N) is 1. This corresponds to a state in which one of the amplifying elements 3 has failed.

また、比較器１０の検出レベルは第３図のＢ点とし、こ
れは故障ボート数（Ｎ）が４で増幅索子２が１個故障し
た状態に対応する。Further, the detection level of the comparator 10 is set to point B in FIG. 3, which corresponds to a state where the number of failed ports (N) is 4 and one amplifier cable 2 has failed.

また、比較′ａ１１の検出レベルは第３図の０点で、こ
れは増＠素子１が故障した状態に対応し。Further, the detection level of comparison 'a11 is 0 point in FIG. 3, which corresponds to a state in which the increase element 1 has failed.

相対電力が一２０ｄＢ低下する点として設定している。It is set as the point at which the relative power decreases by 120 dB.

モニタ信号は比較器９〜１０により常に振幅比較されて
いる。増＠素子が故障した時に検出する比較器の違いに
よシ、３段増幅系統の故障部位が切分けられる。The monitor signals are constantly compared in amplitude by comparators 9-10. Depending on the comparator used to detect a failure in an amplifier element, the failure location of the three-stage amplification system can be isolated.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、複数出力を多並列合成す
る電力増幅器において、出力電力に対する複数の検出レ
ベルを用意し、その比較検出レベルを各増幅系統それぞ
れの故障時の出力に対応する値に設定しておくことによ
り、電力増幅器の動作の正常、異常の検出の他、異常時
には故障増幅系統の弁別ができるという効果がある。As explained above, the present invention provides a plurality of detection levels for output power in a power amplifier that synthesizes multiple outputs in parallel, and sets the comparison detection level to a value corresponding to the output at the time of failure of each amplifier system. By setting this, in addition to detecting whether the power amplifier is operating normally or abnormally, it is also possible to distinguish between a faulty amplification system in the event of an abnormality.

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

Ｎ１図は本発明の電力増幅器の一実施例の構成図、第２
図は従来の電力増幅器の一例を示す構成図、第３図は第
１図の実施例の故障ポート数対出力電力低下特性図であ
る。１・・・増幅索子、２・・・増幅素子、３・・・増幅素
子、４・・・２分配器、５・・・４分配器、６・・・８
合成器、７・・・カップラー、８・・・検波器、９〜１
２・・・比較器。代理人　弁理士　　内　原　　　晋Diagram N1 is a configuration diagram of an embodiment of the power amplifier of the present invention.
The figure is a block diagram showing an example of a conventional power amplifier, and FIG. 3 is a characteristic diagram of the number of failed ports versus output power drop of the embodiment of FIG. 1. DESCRIPTION OF SYMBOLS 1... Amplifying element, 2... Amplifying element, 3... Amplifying element, 4... 2 distributor, 5... 4 distributor, 6... 8
Combiner, 7... Coupler, 8... Detector, 9-1
2... Comparator. Agent Patent Attorney Susumu Uchihara

Claims (1)

Translated fromJapanese

【特許請求の範囲】[Claims]高周波電力増幅素子の出力を多並列合成して出力する電
力増幅器において、出力電力の一部を抽出して動作監視
のモニタ信号を発生する手段と、前記モニタ信号のレベ
ルを増幅系統ごとにそれぞれ異なる故障時出力に対応し
た複数の検出レベルで検出する手段とを備えて成ること
を特徴とする電力増幅器。In a power amplifier that synthesizes and outputs the outputs of high-frequency power amplification elements in parallel, there is a means for extracting a part of the output power to generate a monitor signal for operation monitoring, and a means for generating a monitor signal for operation monitoring, and a means for generating a monitor signal for operation monitoring, and a method for making the level of the monitor signal different for each amplification system. 1. A power amplifier comprising: means for detecting at a plurality of detection levels corresponding to outputs at the time of failure.