JP6734209B2 - Power amplification device and power amplification control method - Google Patents

Power amplification device and power amplification control method Download PDF

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JP6734209B2
JP6734209B2 JP2017024445A JP2017024445A JP6734209B2 JP 6734209 B2 JP6734209 B2 JP 6734209B2 JP 2017024445 A JP2017024445 A JP 2017024445A JP 2017024445 A JP2017024445 A JP 2017024445A JP 6734209 B2 JP6734209 B2 JP 6734209B2
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鈴木　義規
義規 鈴木
勝彦 山中
勝彦 山中
皓平 須崎
皓平 須崎
山下　史洋
史洋 山下
直樹 北
直樹 北
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Nippon Telegraph and Telephone Corp
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本発明は、衛星通信システムの基地局における電力増幅装置および電力増幅制御方法に関する。 The present invention relates to a power amplification device and a power amplification control method in a base station of a satellite communication system.

衛星通信は広範なサービスエリアと災害に強い特徴を有しているため、地上回線の使用困難な洋上やデジタルディバイド地域、災害時の通信環境構築に広く利用されている。しかしながら、36,000ｋｍ上空の静止衛星を中継して通信するため、伝搬損失が非常に大きく地球局の性能の向上が求められる。特に、点在する各ユーザ端末からのデータを集約する基地局においては、扱う通信容量が大きく、大きな送信電力が必要となると共に、信頼性の確保や故障時の対応が求められる。 Since satellite communication has a wide service area and is highly resistant to disasters, it is widely used in the offshore and digital divide areas where it is difficult to use terrestrial lines, and in establishing a communication environment during a disaster. However, since it relays and communicates with geostationary satellites above 36,000 km, the propagation loss is very large and the improvement of the performance of the earth station is required. In particular, a base station that collects data from scattered user terminals has a large communication capacity to handle, requires a large amount of transmission power, and is required to ensure reliability and respond to failures.

図８は、衛星通信システムの構成例を示す（非特許文献１）。
図８において、衛星通信システムは、静止衛星ＳＡＴを介してユーザ端末ＵＴと基地局ＢＳが通信する構成である。ここでは、ユーザ端末を２つのグループＡ，Ｂに分け、グループＡのユーザ端末ＵＴ−Ａ１〜ＵＴ−ＡｎおよびグループＢのユーザ端末ＵＴ−Ｂ１〜ＵＴ−Ｂｍとし、各グループのユーザ端末を収容する基地局ＢＳ−Ａ，ＢＳ−Ｂを分散配置する。基地局ＢＳ−Ａ，ＢＳ−ＢはネットワークＮＷを介して接続される。このようなグループ分けおよび基地局の分散配置により、基地局の被災や故障時による回線断の影響を小さくすることができる。さらに、一方の基地局が故障またはメンテナンスにより使用できない状態になった場合に、他方の基地局が両グループの回線を同時に収容可能な性能を有することにより、信頼性を向上させることができる。 FIG. 8 shows a configuration example of a satellite communication system (Non-Patent Document 1).
In FIG. 8, the satellite communication system has a configuration in which a user terminal UT and a base station BS communicate with each other via a geostationary satellite SAT. Here, the user terminals are divided into two groups A and B, which are user terminals UT-A1 to UT-An of group A and user terminals UT-B1 to UT-Bm of group B, and accommodate the user terminals of each group. The base stations BS-A and BS-B are distributed and arranged. The base stations BS-A and BS-B are connected via the network NW. By such grouping and distributed arrangement of the base stations, it is possible to reduce the influence of line disconnection due to damage or failure of the base stations. Further, when one base station becomes unavailable due to a failure or maintenance, the other base station has the capability of simultaneously accommodating the lines of both groups, so that the reliability can be improved.

図９は、衛星通信システムの基地局ＢＳの構成例を示す。
図９において、基地局ＢＳは、アンテナ５１、増幅手段５２、周波数変換手段５３、変復調手段５４を備え、伝送装置５５を介してネットワークＮＷに接続される。複数のユーザ端末を収容する基地局ＢＳは、ユーザ端末に比較して大きな出力と信頼性が求められる。例えば、図１０(1) に示すように２つの増幅手段（＃１）５２−１と増幅手段（＃２）５２−２による冗長構成をとり、切替手段５６，５７を用いて一方の増幅手段（＃１）５２−１が故障したときに、他方の増幅手段（＃２）５２−２に切り替えることにより、信頼性向上が図られる。 FIG. 9 shows a configuration example of the base station BS of the satellite communication system.
In FIG. 9, the base station BS includes an antenna 51, an amplification unit 52, a frequency conversion unit 53, and a modulation/demodulation unit 54, and is connected to the network NW via a transmission device 55. The base station BS accommodating a plurality of user terminals is required to have a large output and reliability as compared with the user terminals. For example, as shown in FIG. 10(1), a redundant configuration of two amplifying means (#1) 52-1 and an amplifying means (#2) 52-2 is used, and one amplifying means is used by using switching means 56 and 57. When the (#1) 52-1 fails, the reliability is improved by switching to the other amplifying means (#2) 52-2.

山本他，ワイドスターII衛星移動通信システム・サービスの概要，NTT DOCOMOテクニカルジャーナル，Vol.18，No.2 pp.37-42Yamamoto et al., Outline of Wide Star II satellite mobile communication system/service, NTT DOCOMO Technical Journal, Vol.18, No.2 pp.37-42

図９に示す基地局ＢＳを構成する機器の中で、増幅手段５２はコストおよび消費電力がともに大きいが、その高出力化に伴ってコストおよび消費電力もさらに大きくなる。 Among the devices constituting the base station BS shown in FIG. 9, the amplifying means 52 has a large cost and power consumption, but the cost and the power consumption increase further as the output power increases.

図８に示す衛星通信システムにおいて、２つの基地局ＢＳ−Ａ，ＢＳ−Ｂがそれぞれ冗長構成の増幅手段を切り替える通常時には、図１０(1) に示すように、各基地局ＢＳの増幅手段は入力Ｐinに対して出力Ｐout となる。 In the satellite communication system shown in FIG. 8, when the two base stations BS-A and BS-B normally switch the amplifying means of the redundant configuration, as shown in FIG. 10(1), the amplifying means of each base station BS is The output Pout is for the input Pin.

ここで、２つの基地局ＢＳ−Ａ，ＢＳ−Ｂが同数のユーザ端末を収容している場合に、一方の基地局が故障またはメンテナンスによりその回線を他方の基地局で収容し、当該基地局の入力信号電力が２倍になる電力増大時には、図１０(2) に示すように、当該基地局の増幅手段は入力２Ｐinに対して出力２Ｐout とする必要がある。すなわち、通常時に比べて増幅手段の利得が変わらないようにするには、２倍の入出力電力に対応する増幅能力が必要となる。このとき、増幅手段が進行波管増幅器のようにアクティブスタンバイを要する場合に、予備系の増幅手段の消費電力も増大することになる。 Here, when two base stations BS-A and BS-B accommodate the same number of user terminals, one base station accommodates the line in the other base station due to failure or maintenance, and the base station concerned. When the power of the input signal is doubled, the amplifying means of the base station must output 2Pout with respect to input 2Pin, as shown in FIG. 10(2). That is, in order to keep the gain of the amplifying means unchanged compared to the normal time, the amplifying ability corresponding to twice the input/output power is required. At this time, when the amplifying means requires active standby like a traveling wave tube amplifier, the power consumption of the amplifying means in the standby system also increases.

本発明は、衛星通信システムの基地局の増幅手段の冗長構成において、通常時と電力増大時の双方に対して消費電力を増大させることなく対応することができる電力増幅装置および電力増幅制御方法を提供することを目的とする。 The present invention provides a power amplification device and a power amplification control method capable of coping with both the normal time and the power increase without increasing the power consumption in the redundant configuration of the amplification means of the base station of the satellite communication system. The purpose is to provide.

第１の発明は、第１の増幅手段および第２の増幅手段を備え、その一方または両方を用いて入力信号を増幅して出力する電力増幅装置において、入力信号を第１の増幅手段に入力する経路または第２の増幅手段に入力する経路を切り替える第１の経路切替モードと、入力信号を第１の増幅手段および第２の増幅手段に等分配して入力する経路を形成する分配モードとのモード切り替えが可能な経路切替分配手段と、第１の増幅手段の出力信号を出力する経路または第２の増幅手段の出力信号を出力する経路を切り替える第２の経路切替モードと、第１の増幅手段および第２の増幅手段の各出力信号を合成した信号を出力する経路を形成する合成モードとのモード切り替えが可能な経路切替合成手段と、経路切替分配手段および経路切替合成手段のそれぞれに、第１の経路切替モードと第２の経路切替モードを同時に設定するか、または分配モードと合成モードを同時に設定する制御を行う制御手段とを備え、制御手段は、入力信号の信号電力が第１の増幅手段および第２の増幅手段で線形増幅可能な許容入力レベルの上限値以下であるときに、経路切替分配手段および経路切替合成手段のそれぞれに第１の経路切替モードと第２の経路切替モードを同時に設定し、入力信号の信号電力が該許容入力レベルの上限値を超えかつ該許容入力レベルの上限値の２倍以下であるときに、経路切替分配手段および経路切替合成手段のそれぞれに分配モードと合成モードを同時に設定する制御を行う。 According to a first aspect of the present invention, in a power amplifying device that includes a first amplifying unit and a second amplifying unit, and uses one or both of them to amplify and output an input signal, the input signal is input to the first amplifying unit. A first path switching mode for switching a path to be input or a path for inputting to the second amplifying means, and a distribution mode for forming a path for equally distributing and inputting an input signal to the first amplifying means and the second amplifying means. A path switching distribution means capable of mode switching, a second path switching mode for switching a path for outputting an output signal of the first amplifying means or a path for outputting an output signal of the second amplifying means, and a first A path switching/combining means capable of mode switching between a combining mode for forming a path for outputting a signal obtained by combining the output signals of the amplifying means and the second amplifying means, and a path switching/distributing means and a path switching/combining means, respectively. , A first route switching mode and a second route switching mode are set at the same time, or a distribution mode and a combination mode are set at the same time . When the allowable input level that can be linearly amplified by the first amplifying means and the second amplifying means is equal to or lower than the upper limit value, the first path switching mode and the second path are respectively provided to the path switching distributing means and the path switching synthesizing means. When the switching modes are set at the same time and the signal power of the input signal exceeds the upper limit value of the allowable input level and is equal to or less than twice the upper limit value of the allowable input level, the route switching distribution means and the route switching synthesizing means respectively. The control for simultaneously setting the distribution mode and the combination mode is performed.

第１の発明の電力増幅装置において、経路切替分配手段は、２つの入力端子と２つの出力端子との間の接続を切り替え可能な経路切替手段と、１つの入力端子に入力する信号を２つの出力端子に等分配して出力する分配手段とを備え、少なくとも２つの該経路切替手段と該分配手段とを組合せ、入力信号を第１の増幅手段または第２の増幅手段のいずれかまたは両方に出力する経路を形成する構成としてもよい。 In the power amplification device according to the first aspect of the present invention, the path switching distribution means includes path switching means capable of switching the connection between the two input terminals and the two output terminals, and two signals input to one input terminal. Distribution means for equally distributing and outputting to output terminals, combining at least two of the path switching means and the distribution means, and inputting the signal to either or both of the first amplification means and the second amplification means. A configuration for forming an output path may be used.

第１の発明の電力増幅装置において、経路切替合成手段は、２つの入力端子と２つの出力端子との間の接続を切り替え可能な経路切替手段と、２つの入力端子に入力する信号を１つの出力端子に合成して出力する合成手段とを備え、少なくとも２つの該経路切替手段と該合成手段とを組合せ、第１の増幅手段または第２の増幅手段のいずれかの出力信号または各出力信号を合成した信号を出力する経路を形成する構成としてもよい。 In the power amplification device according to the first aspect of the present invention, the path switching/combining means is capable of switching the connection between the two input terminals and the two output terminals, and the signal input to the two input terminals is one. An output signal of either the first amplifying means or the second amplifying means, or each output signal. It is also possible to form a path for outputting a signal obtained by combining

第２の発明は、第１の増幅手段および第２の増幅手段を備え、その一方または両方を用いて入力信号を増幅して出力する電力増幅制御方法において、入力信号を第１の増幅手段に入力する経路または第２の増幅手段に入力する経路を切り替える第１の経路切替モードと、第１の増幅手段の出力信号を出力する経路または第２の増幅手段の出力信号を出力する経路を切り替える第２の経路切替モードとを同時に設定する第１のステップを有し、入力信号を第１の増幅手段および第２の増幅手段に等分配して入力する経路を形成する分配モードと、第１の増幅手段および第２の増幅手段の各出力信号を合成した信号を出力する経路を形成する合成モードとを同時に設定する第２のステップを有し、入力信号の信号電力が第１の増幅手段および第２の増幅手段で線形増幅可能な許容入力レベルの上限値以下であり、第１の増幅手段または第２の増幅手段の一方で入力信号の増幅を行う場合に第１のステップを選択し、入力信号の信号電力が許容入力レベルの上限値を超えかつ許容入力レベルの上限値の２倍以下であり、第１の増幅手段および第２の増幅手段の両方で入力信号の増幅を行う場合に第２のステップを選択し、第１のステップにより第１の増幅手段または第２の増幅手段の一方を用いて入力信号の増幅を行うか、または第２のステップにより第１の増幅手段および第２の増幅手段の両方を用いて入力信号の増幅を行う。 A second aspect of the present invention is a power amplification control method that includes a first amplifying unit and a second amplifying unit, and uses one or both of them to amplify and output an input signal. Switching between a first path switching mode for switching an input path or a path for inputting to the second amplifying means and a path for outputting an output signal of the first amplifying means or a path for outputting an output signal of the second amplifying means. A distribution mode having a first step of simultaneously setting the second path switching mode and forming a path for equally distributing and inputting an input signal to the first amplification means and the second amplification means; And a combining mode for forming a path for outputting a signal obtained by combining the output signals of the second amplifying means at the same time, and the signal power of the input signal is the first amplifying means. And the upper limit value of the allowable input level that can be linearly amplified by the second amplifying means, and the first step is selected when the input signal is amplified by either the first amplifying means or the second amplifying means. When the signal power of the input signal exceeds the upper limit value of the allowable input level and is equal to or less than twice the upper limit value of the allowable input level, and the input signal is amplified by both the first amplifying means and the second amplifying means. The second step is selected, and the input signal is amplified using one of the first amplifying means or the second amplifying means in the first step, or the second amplifying means is used in the second step. Amplification of the input signal is performed using both of the second amplification means.

本発明は、２つの増幅手段の一方を選択して信号増幅に用いる経路切替モードと、２つの増幅手段の両方を信号増幅に用いる分配・合成モードの切り替えが可能となる。これにより、２つの基地局の回線を１つの基地局に収容するために入力信号電力が例えば２倍になる電力増大時でも、入力信号を２つの増幅手段に分割して増幅可能となるので、基地局の消費電力を大きくすることなく２倍の回線収容が可能となる。 According to the present invention, it is possible to switch between a path switching mode in which one of the two amplifying means is used for signal amplification and a distribution/combining mode in which both of the two amplifying means are used for signal amplification. This allows the input signal to be divided into two amplifying means and amplified even when the input signal power is doubled, for example, to accommodate the channels of the two base stations in one base station. It is possible to accommodate twice as many lines without increasing the power consumption of the base station.

本発明の基地局増幅装置の構成例を示す図である。It is a figure which shows the structural example of the base station amplifier of this invention. 本発明の基地局増幅装置の制御例を示す図である。It is a figure which shows the example of control of the base station amplifier of this invention. 経路切替分配手段１１および経路切替合成手段１３の構成例１を示す図である。FIG. 3 is a diagram showing a configuration example 1 of a route switching distribution unit 11 and a route switching synthesizing unit 13. 経路切替器の構成例を示す。The structural example of a path switch is shown. 経路切替分配手段１１および経路切替合成手段１３の構成例２を示す図である。7 is a diagram showing a configuration example 2 of a route switching distribution unit 11 and a route switching synthesizing unit 13. FIG. 経路切替分配手段１１および経路切替合成手段１３の構成例１の変形を示す図である。It is a figure which shows the modification of the example 1 of a structure of the path|route switching distribution means 11 and the path|route switching synthetic|combination means 13. 経路切替分配手段１１および経路切替合成手段１３の構成例２の変形を示す図である。FIG. 9 is a diagram showing a modification of the second configuration example of the route switching distribution unit 11 and the route switching synthesizing unit 13. 衛星通信システムの構成例を示す図である。It is a figure which shows the structural example of a satellite communication system. 衛星通信システムの基地局ＢＳの構成例を示す図である。It is a figure which shows the structural example of the base station BS of a satellite communication system. 増幅手段の冗長構成例を示す図である。It is a figure which shows the redundant structural example of an amplification means.

図１は、本発明の基地局増幅装置の構成例を示す。
図１において、基地局増幅装置は、経路切替分配手段１１、増幅手段（＃１）１２−１および増幅手段（＃２）１２−２、経路切替合成手段１３、故障検出手段１４、動作モード制御手段１５により構成される。 FIG. 1 shows a configuration example of a base station amplification apparatus of the present invention.
In FIG. 1, the base station amplification apparatus includes a path switching distribution unit 11, an amplification unit (#1) 12-1 and an amplification unit (#2) 12-2, a path switching synthesis unit 13, a failure detection unit 14, and an operation mode control. It is configured by the means 15.

経路切替分配手段１１は、入力信号を２つの増幅手段の一方に出力する経路切替モードと、入力信号を２つの増幅手段に等振幅かつ等位相で出力する分配モードを切り替える構成である。経路切替合成手段１３は、２つの増幅手段の出力信号の一方を出力する経路切替モードと、２つの増幅手段の出力信号を損失なく合成して出力する合成モードを切り替える構成である。故障検出手段１４は、２つの増幅手段の正常性を検出し、その結果を動作モード制御手段１５に通知する。動作モード制御手段１５は、基地局の通常時または電力増大時の運用状態と故障検出手段１４の検出結果に応じて、経路切替分配手段１１と経路切替合成手段１３の動作モードを制御する。 The path switching distribution means 11 is configured to switch between a path switching mode for outputting an input signal to one of the two amplifying means and a distribution mode for outputting an input signal to the two amplifying means with equal amplitude and same phase. The path switching/combining means 13 is configured to switch between a path switching mode for outputting one of the output signals of the two amplifying means and a combining mode for combining and outputting the output signals of the two amplifying means without loss. The failure detection means 14 detects the normality of the two amplification means and notifies the operation mode control means 15 of the result. The operation mode control unit 15 controls the operation mode of the route switching distribution unit 11 and the route switching synthesizing unit 13 according to the operating state of the base station at the normal time or when the power is increased and the detection result of the failure detection unit 14.

図２は、本発明の基地局増幅装置の制御例を示す。
図２(1) は、２つの基地局ＢＳ−Ａ，ＢＳ−Ｂがそれぞれ冗長構成の増幅手段（＃１）１２−１および増幅手段（＃２）１２−２を切り替える通常時に対応する。このとき、各増幅手段で線形増幅可能な許容入力レベルの上限値をＰinとする。動作モード制御手段１５は、ここでは増幅手段（＃１）１２−１を選択するように、経路切替分配手段１１と経路切替合成手段１３に対して経路切替モードを設定する。また、増幅手段（＃１）１２−１が故障した場合には、故障検出手段１４の検出結果に応じて、予備系の増幅手段（＃２）１２−２に切り替える制御が行われる。これにより、各基地局ＢＳ−Ａ，ＢＳ−Ｂが個々に動作するときに、各増幅手段の許容入力レベルの上限値Ｐinの入力信号電力は、経路切替分配手段１１から損失なく増幅手段（＃１）１２−１または増幅手段１２−２の入力となり、線形増幅された出力信号電力Ｐout は経路切替合成手段１３から損失なく出力される。 FIG. 2 shows a control example of the base station amplifying device of the present invention.
FIG. 2(1) corresponds to a normal time when the two base stations BS-A and BS-B switch between the amplifying means (#1) 12-1 and the amplifying means (#2) 12-2 having a redundant configuration. At this time, the upper limit of the allowable input level that can be linearly amplified by each amplification means is Pin. The operation mode control means 15 sets the route switching mode to the route switching distribution means 11 and the route switching synthesizing means 13 so that the amplifying means (#1) 12-1 is selected here. Further, when the amplifying means (#1) 12-1 fails, control is performed to switch to the amplifying means (#2) 12-2 of the standby system according to the detection result of the failure detecting means 14. As a result, when each of the base stations BS-A and BS-B operates individually, the input signal power of the upper limit value Pin of the allowable input level of each amplification means is not lost from the path switching distribution means 11 and the amplification means (# 1) The output signal power Pout, which is an input to 12-1 or the amplification means 12-2 and is linearly amplified, is output from the path switching/combining means 13 without loss.

図２(2) は、２つの基地局ＢＳ−Ａ，ＢＳ−Ｂがそれぞれ収容するユーザ端末数が同数であり、その一方が故障またはメンテナンスによりその回線を他方の基地局で収容し、当該基地局の収容回線数が２倍になり、当該基地局の入力信号が各増幅手段の許容入力レベルの上限値Ｐinの２倍（２Ｐin）になる電力増大時を想定する。このとき、各増幅手段の許容入力レベルの上限値が１つの基地局の収容回線数に応じたＰinのままとすると、２倍の回線を収容する基地局の入力信号電力２Ｐinを、そのまま一方の増幅手段に入力しても線形増幅ができない。 In FIG. 2(2), the two base stations BS-A and BS-B accommodate the same number of user terminals, and one of them accommodates the line in the other base station due to a failure or maintenance, and the base station concerned. It is assumed that the number of lines accommodated in the station is doubled and the input signal of the base station is doubled (2 Pin) to the upper limit value Pin of the allowable input level of each amplification means. At this time, if the upper limit of the allowable input level of each amplifying means is set to Pin according to the number of lines accommodated in one base station, the input signal power 2Pin of the base station accommodating twice the number of lines is left unchanged. Linear amplification is not possible even if input to the amplification means.

そこで、動作モード制御手段１５は、一方の基地局が他方の基地局の回線を収容して入力信号電力が２Ｐinとなるときに、経路切替分配手段１１に対して入力信号を２つの増幅手段（＃１）１２−１および増幅手段（＃２）１２−２に等振幅かつ等位相で出力する分配モードに設定し、経路切替合成手段１３に対して２つの増幅手段（＃１）１２−１および増幅手段（＃２）１２−２の出力を損失なく合成して出力信号とする合成モードに設定する。これにより、入力信号電力２Ｐinは、経路切替分配手段１１で等分配（３dB減）され、増幅手段（＃１）１２−１および増幅手段１２−２の許容入力レベルの上限値Ｐinになって入力し、それぞれで増幅された出力信号電力Ｐout が経路切替合成手段１３で合成（３dB増）されて出力信号電力２Ｐout として出力される。 Therefore, when one base station accommodates the line of the other base station and the input signal power becomes 2 Pin, the operation mode control means 15 outputs two input signals to the path switching distribution means 11 by two amplifying means ( #1) 12-1 and amplifying means (#2) 12-2 are set to a distribution mode for outputting with equal amplitude and same phase, and two amplifying means (#1) 12-1 are provided for the path switching/combining means 13. Then, the output of the amplifying means (#2) 12-2 is combined without loss to be set as a combined mode in which the output signal is obtained. As a result, the input signal power 2Pin is equally distributed (reduced by 3dB) by the path switching distribution unit 11, becomes the upper limit value Pin of the allowable input level of the amplification unit (#1) 12-1 and the amplification unit 12-2, and is input. Then, the output signal power Pout amplified by each is combined (3 dB increase) by the path switching combining means 13 and output as the output signal power 2Pout.

ここで、２つの基地局ＢＳ−Ａ，ＢＳ−Ｂがそれぞれ収容するユーザ端末数が異なる場合に、その一方の基地局が他方の基地局の回線を収容したときの回線数は２倍未満または２倍を超えることがある。当該基地局の回線数が２倍未満となる場合は、その入力信号電力も２Ｐin未満となるので、経路切替合成手段１１，１３を分配・合成モードを設定すると、増幅手段（＃１）１２−１および増幅手段１２−２の入力信号電力は、許容入力レベルの上限値Ｐin未満となり、許容入力レベルの上限値Ｐinである増幅手段をそのまま使用できる。 Here, when the number of user terminals accommodated in each of the two base stations BS-A and BS-B is different, the number of lines when one of the base stations accommodates the line of the other base station is less than double or It may exceed 2 times. When the number of lines of the base station is less than twice, the input signal power also becomes less than 2 Pin. Therefore, when the path switching/combining means 11 and 13 are set to the distribution/combining mode, the amplifying means (#1) 12- 1 and the input signal power of the amplifying means 12-2 are less than the upper limit value Pin of the allowable input level, and the amplifying means having the upper limit value Pin of the allowable input level can be used as it is.

一方、１つの基地局で収容回線数が２倍を超える場合は、当該基地局の入力信号電力は２Ｐinを超えることになる。このとき、経路切替合成手段１１，１３を分配・合成モードを設定しても、増幅手段（＃１）１２−１および増幅手段１２−２の入力信号電力は、許容入力レベルの上限値Ｐinを超えることになり、増幅手段の増幅能力をアップする必要が生じる。すなわち、許容入力レベルの上限値Ｐinの増幅手段をそのまま使用するためには、基地局の入力信号電力が２Ｐin以下の場合に限定してもよい。 On the other hand, when the number of lines accommodated in one base station exceeds twice, the input signal power of the base station exceeds 2 Pin. At this time, even if the path switching/combining means 11 and 13 are set to the distribution/combining mode, the input signal powers of the amplifying means (#1) 12-1 and the amplifying means 12-2 have the upper limit value Pin of the allowable input level. Therefore, it is necessary to increase the amplification capacity of the amplification means. That is, in order to use the amplifying means for the upper limit value Pin of the allowable input level as it is, the input signal power of the base station may be limited to 2 Pin or less.

以下、本発明における経路切替分配手段１１および経路切替合成手段１３の構成例について説明する。 Hereinafter, a configuration example of the route switching distribution unit 11 and the route switching synthesizing unit 13 in the present invention will be described.

図３は、経路切替分配手段１１および経路切替合成手段１３の構成例１を示す。ここでは、２つの増幅手段の一方を選択する経路切替モードに対応する構成を示す。
図３において、経路切替分配手段１１は経路切替器Ｌ１，Ｌ２と分配手段により構成され、経路切替合成手段１３は経路切替器Ｌ３，Ｌ４と合成手段により構成される。経路切替器Ｌ１〜Ｌ４には、図４に示すロータリー型の経路切替スイッチまたはトランスファー型の経路切替スイッチが用いられる。端子Ａ−Ｂおよび端子Ｃ−Ｄの経路と、端子Ａ−Ｄおよび端子Ｃ−Ｂの経路とを切り替えることができる構成である。 FIG. 3 shows a configuration example 1 of the route switching distribution unit 11 and the route switching synthesizing unit 13. Here, the configuration corresponding to the path switching mode for selecting one of the two amplifying means is shown.
In FIG. 3, the path switching distribution means 11 is composed of the path switching devices L1 and L2 and the distribution means, and the path switching composition means 13 is composed of the path switching devices L3 and L4 and the composition means. For the path changers L1 to L4, the rotary type path changeover switch or the transfer type path changeover switch shown in FIG. 4 is used. This is a configuration in which the paths of the terminals AB and C-D and the paths of the terminals AD and CB can be switched.

図３(1) は増幅手段（＃１）１２−１で増幅する経路である。経路切替分配手段１１では、経路切替器Ｌ１，Ｌ２の設定により分配手段を介さずに、入力信号Ｐinを増幅手段（＃１）１２−１に入力する経路が形成される。経路切替合成手段１３では、経路切替器Ｌ３の設定により合成手段を介さずに、増幅手段（＃１）１２−１の出力信号Ｐout を出力する経路が形成される。 FIG. 3(1) shows a path for amplification by the amplification means (#1) 12-1. In the path switching/distributing means 11, a path for inputting the input signal Pin to the amplifying means (#1) 12-1 is formed by setting the path switching devices L1 and L2 without passing through the distributing means. In the path switching/combining means 13, the path for outputting the output signal Pout of the amplifying means (#1) 12-1 is formed by the setting of the path switching device L3 without passing through the combining means.

図３(2) は増幅手段（＃２）１２−２で増幅する経路である。経路切替分配手段１１では、経路切替器Ｌ１の設定により分配手段を介さずに、入力信号Ｐinを増幅手段（＃２）１２−２に入力する経路が形成される。経路切替合成手段１３では、経路切替器Ｌ３，Ｌ４の設定により合成手段を介さずに、増幅手段（＃２）１２−２の出力信号Ｐout を出力する経路が形成される。 FIG. 3(2) shows a path for amplification by the amplification means (#2) 12-2. In the path switching/distributing means 11, a path for inputting the input signal Pin to the amplifying means (#2) 12-2 is formed by the setting of the path switching device L1 without passing through the distributing means. In the path switching/combining means 13, a path for outputting the output signal Pout of the amplifying means (#2) 12-2 is formed by setting the path switching devices L3 and L4 without going through the combining means.

図５は、経路切替分配手段１１および経路切替合成手段１３の構成例２を示す。ここでは、電力増大時に２つの増幅手段を活用する分配・合成モードに対応する構成を示す。 FIG. 5 shows a configuration example 2 of the route switching distribution unit 11 and the route switching synthesizing unit 13. Here, a configuration corresponding to the distribution/combination mode in which two amplifying means are utilized when the power is increased is shown.

図５において、経路切替分配手段１１は経路切替器Ｌ１，Ｌ２と分配手段により構成され、経路切替合成手段１３は経路切替器Ｌ３，Ｌ４と合成手段により構成されるが、ここでは分配手段および合成手段を通過する経路が形成される。経路切替分配手段１１では、経路切替器Ｌ１，Ｌ２の設定により分配手段を介して、入力信号２Ｐinを増幅手段（＃１）１２−１および増幅手段（＃２）１２−２に分配する経路が形成される。経路切替合成手段１３では、経路切替器Ｌ３，Ｌ４の設定により合成手段を介して、増幅手段（＃１）１２−１および増幅手段（＃２）１２−２の各出力信号Ｐout を合成する経路が形成され、出力信号２Ｐout として出力される。 In FIG. 5, the path switching distribution means 11 is composed of the path switching devices L1 and L2 and the distribution means, and the path switching composition means 13 is composed of the path switching devices L3 and L4 and the composition means. A path is formed through the means. In the path switching/distributing means 11, there is a path for distributing the input signal 2Pin to the amplifying means (#1) 12-1 and the amplifying means (#2) 12-2 via the distributing means by setting the path switching devices L1 and L2. It is formed. In the path switching/combining means 13, a path for combining the output signals Pout of the amplifying means (#1) 12-1 and the amplifying means (#2) 12-2 via the combining means by setting the path switching devices L3 and L4. Are formed and output as the output signal 2Pout.

ここで、図３(1),(2) に示す経路切替モードでは、２つの増幅手段（＃１）１２−１および増幅手段（＃２）１２−２の一方を用いて信号増幅を行うが、他方の増幅手段のメンテナンスのためにその入出力端子を終端させることが好ましい場合がある。その場合には、図６に示すように、経路切替分配手段１１および経路切替合成手段１３にそれぞれ経路切替器を１つ追加することにより対応可能である。 Here, in the path switching mode shown in FIGS. 3(1) and 3(2), signal amplification is performed using one of the two amplifying means (#1) 12-1 and the amplifying means (#2) 12-2. In some cases, it may be preferable to terminate the input/output terminal for maintenance of the other amplifying means. In that case, as shown in FIG. 6, this can be dealt with by adding one path switching device to each of the path switching distribution means 11 and the path switching synthesis means 13.

図６(1),(2) は、増幅手段（＃１）１２−１または増幅手段（＃２）１２−２で増幅する経路である。経路切替分配手段１１では、経路切替器Ｌ１，Ｌ２，Ｌ５の設定により分配手段を介さずに、入力信号Ｐinを増幅手段（＃１）１２−１または増幅手段（＃２）１２−２に入力する経路が形成される。経路切替合成手段１３では、経路切替器Ｌ３，Ｌ４，Ｌ６の設定により合成手段を介さずに、増幅手段（＃１）１２−１または増幅手段（＃２）１２−２の出力信号Ｐout を出力する経路が形成される。 6(1) and 6(2) are paths for amplification by the amplification means (#1) 12-1 or the amplification means (#2) 12-2. In the path switching/distributing means 11, the input signal Pin is input to the amplifying means (#1) 12-1 or the amplifying means (#2) 12-2 without passing through the distributing means by setting the path switching devices L1, L2 and L5. A path is formed. The path switching/combining means 13 outputs the output signal Pout of the amplifying means (#1) 12-1 or the amplifying means (#2) 12-2 without setting the combining means by setting the path switching devices L3, L4, and L6. A path is formed.

ここで、図６(1) では、増幅手段（＃２）１２−２の入力端子は、経路切替分配手段１１の経路切替器Ｌ１，Ｌ２，Ｌ５および分配手段を介して終端され、増幅手段（＃２）１２−２の出力端子は、経路切替合成手段１３の経路切替器Ｌ３，Ｌ４，Ｌ６および合成手段を介して終端される。図６(2) では、増幅手段（＃１）１２−１の入力端子は、経路切替分配手段１１の経路切替器Ｌ１，Ｌ２，Ｌ５および分配手段を介して終端され、増幅手段（＃１）１２−１の出力端子は、経路切替合成手段１３の経路切替器Ｌ３，Ｌ４，Ｌ６および合成手段を介して終端される。 Here, in FIG. 6(1), the input terminal of the amplification means (#2) 12-2 is terminated via the path switching devices L1, L2, L5 of the path switching distribution means 11 and the distribution means, and the amplification means ( #2) The output terminal of 12-2 is terminated via the path switching devices L3, L4, L6 of the path switching synthesizing means 13 and the synthesizing means. In FIG. 6(2), the input terminal of the amplifying means (#1) 12-1 is terminated via the path switching devices L1, L2, L5 and the distributing means of the path switching/distributing means 11, and the amplifying means (#1). The output terminal of 12-1 is terminated via the path switching devices L3, L4, L6 of the path switching synthesizing means 13 and the synthesizing means.

また、図５に示す分配・合成モードに対応する場合でも、経路切替分配手段１１および経路切替合成手段１３にそれぞれ経路切替器を１つ追加した構成でも対応可能であり、その構成例を図７に示す。 Further, even in the case of supporting the distribution/combining mode shown in FIG. 5, a structure in which one path switching device is added to each of the path switching distribution means 11 and the path switching composition means 13 is also applicable, and a configuration example thereof is shown in FIG. Shown in.

図７において、経路切替分配手段１１は経路切替器Ｌ１，Ｌ２，Ｌ５と分配手段により構成され、経路切替合成手段１３は経路切替器Ｌ３，Ｌ４，Ｌ６と合成手段により構成される。経路切替分配手段１１では、経路切替器Ｌ１，Ｌ２，Ｌ５の設定により分配手段を介して、入力信号２Ｐinを増幅手段（＃１）１２−１および増幅手段（＃２）１２−２に分配する経路が形成される。経路切替合成手段１３では、経路切替器Ｌ３，Ｌ４，Ｌ６の設定により合成手段を介して、増幅手段（＃１）１２−１および増幅手段（＃２）１２−２の各出力信号Ｐout を合成する経路が形成され、出力信号２Ｐout として出力される。 In FIG. 7, the path switching distribution means 11 is composed of the path switching devices L1, L2, L5 and the distribution means, and the path switching composition means 13 is composed of the path switching devices L3, L4, L6 and the composition means. In the path switching distribution means 11, the input signal 2Pin is distributed to the amplification means (#1) 12-1 and the amplification means (#2) 12-2 via the distribution means according to the setting of the path switching devices L1, L2 and L5. A path is formed. The path switching/combining means 13 combines the output signals Pout of the amplifying means (#1) 12-1 and the amplifying means (#2) 12-2 via the combining means by setting the path switching devices L3, L4, L6. Path is formed and is output as the output signal 2Pout.

１１ 経路切替分配手段
１２ 増幅手段
１３ 経路切替合成手段
１４ 故障検出手段
１５ 動作モード制御手段 11 Path Switching Distribution Means 12 Amplifying Means 13 Path Switching Synthesizing Means 14 Failure Detecting Means 15 Operation Mode Control Means

Claims (4)

第１の増幅手段および第２の増幅手段を備え、その一方または両方を用いて入力信号を増幅して出力する電力増幅装置において、
前記入力信号を前記第１の増幅手段に入力する経路または前記第２の増幅手段に入力する経路を切り替える第１の経路切替モードと、前記入力信号を前記第１の増幅手段および前記第２の増幅手段に等分配して入力する経路を形成する分配モードとのモード切り替えが可能な経路切替分配手段と、
前記第１の増幅手段の出力信号を出力する経路または前記第２の増幅手段の出力信号を出力する経路を切り替える第２の経路切替モードと、前記第１の増幅手段および前記第２の増幅手段の各出力信号を合成した信号を出力する経路を形成する合成モードとのモード切り替えが可能な経路切替合成手段と、
前記経路切替分配手段および前記経路切替合成手段のそれぞれに、前記第１の経路切替モードと前記第２の経路切替モードを同時に設定するか、または前記分配モードと前記合成モードを同時に設定する制御を行う制御手段と
を備え、
前記制御手段は、前記入力信号の信号電力が前記第１の増幅手段および前記第２の増幅手段で線形増幅可能な許容入力レベルの上限値以下であるときに、前記経路切替分配手段および前記経路切替合成手段のそれぞれに前記第１の経路切替モードと前記第２の経路切替モードを同時に設定し、前記入力信号の信号電力が該許容入力レベルの上限値を超えかつ該許容入力レベルの上限値の２倍以下であるときに、前記経路切替分配手段および前記経路切替合成手段のそれぞれに前記分配モードと前記合成モードを同時に設定する制御を行う
ことを特徴とする電力増幅装置。 In a power amplification device that includes a first amplification means and a second amplification means, and uses one or both of them to amplify and output an input signal,
A first path switching mode for switching a path for inputting the input signal to the first amplifying means or a path for inputting to the second amplifying means, and the input signal for the first amplifying means and the second amplifying means. A path switching distribution means capable of mode switching between a distribution mode in which a path is input which is equally distributed to the amplification means;
A second path switching mode for switching a path for outputting the output signal of the first amplifying means or a path for outputting the output signal of the second amplifying means, and the first amplifying means and the second amplifying means. A path switching synthesizing means capable of mode switching with a synthesizing mode for forming a route for outputting a signal obtained by synthesizing each output signal of
Control for simultaneously setting the first route switching mode and the second route switching mode or setting the distribution mode and the synthesizing mode at the same time is performed in each of the route switching distribution unit and the route switching combining unit. and control means for performing,
The control means, when the signal power of the input signal is equal to or lower than the upper limit value of the allowable input level that can be linearly amplified by the first amplification means and the second amplification means, the path switching distribution means and the path. The first path switching mode and the second path switching mode are simultaneously set in each of the switching synthesis means, and the signal power of the input signal exceeds the upper limit value of the allowable input level and the upper limit value of the allowable input level. The power amplifying apparatus is characterized in that the control is performed to simultaneously set the distribution mode and the combination mode in each of the path switching distribution means and the path switching combining means when the value is equal to or less than twice . 請求項１に記載の電力増幅装置において、
前記経路切替分配手段は、２つの入力端子と２つの出力端子との間の接続を切り替え可能な経路切替手段と、１つの入力端子に入力する信号を２つの出力端子に等分配して出力する分配手段とを備え、少なくとも２つの該経路切替手段と該分配手段とを組合せ、前記入力信号を前記第１の増幅手段または前記第２の増幅手段のいずれかまたは両方に出力する経路を形成する構成である
ことを特徴とする電力増幅装置。 The power amplification device according to claim 1,
The path switching distribution means is capable of switching the connection between the two input terminals and the two output terminals, and the signal input to one input terminal is equally distributed to the two output terminals and output. Distribution means, and combining at least two of the path switching means and the distribution means to form a path for outputting the input signal to either or both of the first amplification means or the second amplification means. A power amplification device having a configuration. 請求項１に記載の電力増幅装置において、
前記経路切替合成手段は、２つの入力端子と２つの出力端子との間の接続を切り替え可能な経路切替手段と、２つの入力端子に入力する信号を１つの出力端子に合成して出力する合成手段とを備え、少なくとも２つの該経路切替手段と該合成手段とを組合せ、前記第１の増幅手段または前記第２の増幅手段のいずれかの出力信号または各出力信号を合成した信号を出力する経路を形成する構成である
ことを特徴とする電力増幅装置。 The power amplification device according to claim 1,
The path switching synthesizing means synthesizes a path switching means capable of switching connection between two input terminals and two output terminals and a signal input to two input terminals to one output terminal and outputs the synthesized signal. Means, and combining at least two of the path switching means and the synthesizing means to output an output signal of either the first amplifying means or the second amplifying means or a signal obtained by synthesizing each output signal. A power amplification device having a configuration that forms a path. 第１の増幅手段および第２の増幅手段を備え、その一方または両方を用いて入力信号を増幅して出力する電力増幅制御方法において、
前記入力信号を前記第１の増幅手段に入力する経路または前記第２の増幅手段に入力する経路を切り替える第１の経路切替モードと、前記第１の増幅手段の出力信号を出力する経路または前記第２の増幅手段の出力信号を出力する経路を切り替える第２の経路切替モードとを同時に設定する第１のステップを有し、
前記入力信号を前記第１の増幅手段および前記第２の増幅手段に等分配して入力する経路を形成する分配モードと、前記第１の増幅手段および前記第２の増幅手段の各出力信号を合成した信号を出力する経路を形成する合成モードとを同時に設定する第２のステップを有し、
前記入力信号の信号電力が前記第１の増幅手段および前記第２の増幅手段で線形増幅可能な許容入力レベルの上限値以下であり、前記第１の増幅手段または前記第２の増幅手段の一方で前記入力信号の増幅を行う場合に前記第１のステップを選択し、
前記入力信号の信号電力が前記許容入力レベルの上限値を超えかつ前記許容入力レベルの上限値の２倍以下であり、前記第１の増幅手段および前記第２の増幅手段の両方で前記入力信号の増幅を行う場合に前記第２のステップを選択し、
前記第１のステップにより前記第１の増幅手段または前記第２の増幅手段の一方を用いて前記入力信号の増幅を行うか、または前記第２のステップにより前記第１の増幅手段および前記第２の増幅手段の両方を用いて前記入力信号の増幅を行う
ことを特徴とする電力増幅制御方法。 A power amplification control method comprising a first amplification means and a second amplification means, and using one or both of them to amplify and output an input signal,
A first path switching mode for switching a path for inputting the input signal to the first amplifying means or a path for inputting to the second amplifying means, and a path for outputting an output signal of the first amplifying means or the A first step of simultaneously setting a second path switching mode for switching a path for outputting the output signal of the second amplifying means,
A distribution mode for forming a path for equally distributing and inputting the input signal to the first amplifying means and the second amplifying means, and output signals of the first amplifying means and the second amplifying means. A second step of simultaneously setting a synthesis mode for forming a route for outputting a synthesized signal,
The signal power of the input signal is less than or equal to the upper limit value of the allowable input level that can be linearly amplified by the first amplifying means and the second amplifying means, and one of the first amplifying means and the second amplifying means Select the first step when amplifying the input signal with
The signal power of the input signal exceeds the upper limit value of the allowable input level and is equal to or less than twice the upper limit value of the allowable input level, and the input signal is applied to both the first amplifying unit and the second amplifying unit. Select the second step when performing amplification of
The first step is used to amplify the input signal by using one of the first amplifying means or the second amplifying means, or the second step is performed by the first amplifying means and the second amplifying means. A power amplification control method, characterized in that the input signal is amplified by using both of the amplification means.
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