JP2004080803A - Wireless communication device - Google Patents
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- 238000004891 communication Methods 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 99
- 230000033228 biological regulation Effects 0.000 claims description 14
- 230000001681 protective effect Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 description 8
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
Description
本発明は無線通信機の高周波電力増幅（終段）回路に用いられる電力増幅（終段）素子の保護に関するものである。 The present invention relates to protection of a power amplifying (final stage) element used in a high frequency power amplifying (final stage) circuit of a wireless communication device.
無線通信機の高周波電力増幅回路の電力増幅素子においては、入力電力と出力電力の差が内部損失となり、これが熱となって素子全体を暖める。これを処置しないまま放置すると、半導体素子内部の接合部の温度が上がりすぎて、最後には半導体が破壊される。それを防ぐため、ある程度以上の大きさの電力増幅素子には、その発熱量に応じた大きさの放熱器が取り付けられるのが普通である。また、それでも発熱量が放熱量より大きくて温度が上昇する時は、冷却用のファンが取り付けられ、強制的に冷却されることもある。 に お い て In the power amplifier element of the radio frequency power amplifier circuit of the wireless communication device, the difference between the input power and the output power becomes an internal loss, which becomes heat and heats the entire element. If this is left untreated, the temperature of the junction inside the semiconductor element will rise too high, eventually breaking the semiconductor. In order to prevent this, a radiator having a size corresponding to the calorific value is usually attached to the power amplifying element having a certain size or more. Further, when the heat generation amount is still larger than the heat release amount and the temperature rises, a cooling fan may be attached and the cooling may be performed forcibly.
しかし、何らかの故障で設計放熱値以上に発熱したり、ファンが停止したりすると、熱暴走を起こして電力増幅素子が壊れることがあった。その対策として従来より幾つかの方法が提案されていた。例えば、実公平６−２３０６７号公報に開示されるように、温度を検出する感温素子を電力増幅素子のケースに密着させ、その検出温度に応じて冷却ファンを回したり、前段の励振電力を小さく出力電力を下げ発熱量を小さくしたりして出力増幅素子を保護する保護回路があった。また、特公平７−３８５９４号公報や特開平６−８５７１１号公報の無線通信機においても、感温素子を用いて電力増幅素子の発熱状態を感知し、出力増幅素子を保護していた。
また、上述したような保護回路の動作中に、その動作を中断する機能に関しては、例えば、特開平６−８５７１１号公報（特許文献１）等に記載されている。
However, when a heat is generated beyond a designed heat radiation value or a fan stops due to some failure, thermal runaway may occur and the power amplification element may be broken. As a countermeasure, several methods have been conventionally proposed. For example, as disclosed in Japanese Utility Model Publication No. 6-23067, a temperature sensing element for detecting a temperature is brought into close contact with a case of a power amplification element, and a cooling fan is turned according to the detected temperature, or excitation power of a preceding stage is reduced. There has been a protection circuit that protects an output amplifying element by lowering the output power and reducing the amount of heat generated. Also, in the wireless communication devices disclosed in Japanese Patent Publication No. 7-38594 and Japanese Patent Application Laid-Open No. 6-85711, the output amplifier element is protected by detecting the heat generation state of the power amplifier element using a temperature sensitive element.
The function of interrupting the operation of the above-described protection circuit during operation is described in, for example, Japanese Patent Application Laid-Open No. 6-85711 (Patent Document 1).
前記特許文献１の機能は、特開平６−８５７１１号公報の図４と段落００１４に記載されているように、送信中に、温度の状態が予め設定された加熱点を過ぎると送信保護回路が働き自動的に受信状態に切り換わるように構成されている。そして、前記送信保護回路が働いている状態であっても一時的に送信可能とするように構成されているものである。 As described in FIG. 4 and paragraph 0014 of Japanese Patent Application Laid-Open No. 6-85711, the function of the above-mentioned Patent Document 1 is that the transmission protection circuit is activated when the temperature condition exceeds a preset heating point during transmission. It is configured to automatically switch to the receiving state. Then, even when the transmission protection circuit is in operation, transmission is enabled temporarily.
しかし、手軽に使えて小さく安価な感温素子、例えばサーミスタは温度特性が安定していないので、電力増幅素子を熱破壊から保護する保護回路の動作点の調整が大変難しく、誤動作も多かった。かといって、精度・安定度の高い感温素子を用いれば、コストが高くつくという問題があった。
また、前記特許文献１に記載された機能は、送信中に、前記送信保護回路が動作して受信状態になっているとき、一時的には送信が可能となるが、送信禁止一時解除タイマーがタイムオーバーになると、前記送信保護回路が動作しない状況になっていても、送信が中断されて強制的に受信状態となるように制御される。
このように、送信途中で強制的に受信状態に切り換わって通話が中断するので、あわてて、送信に切り換える操作を行わなければならないという問題があった。
However, since the temperature characteristics of an easily usable and small and inexpensive thermosensitive element such as a thermistor are not stable, it is very difficult to adjust the operating point of a protection circuit for protecting the power amplifying element from thermal destruction, and there are many malfunctions. However, there is a problem that the cost is high if a thermosensitive element having high accuracy and stability is used.
In addition, the function described in Patent Document 1 enables transmission temporarily when the transmission protection circuit is operating and in a reception state during transmission, but a transmission prohibition temporary release timer is provided. When the time is over, even if the transmission protection circuit is not operating, transmission is interrupted and control is performed so as to forcibly enter the reception state.
As described above, since the communication is forcibly switched to the reception state during the transmission and the call is interrupted, there is a problem that the operation for switching to the transmission must be performed in a hurry.
本発明は、上記の問題点にかんがみて提案されたもので、微調整が不要で、確実に動作し、しかも、保護回路が動作中であっても、緊急事態等においてはフルパワーで送信することが可能であるとともに、通話の中断を最小限にすることのできる無線通信機を提供することを目的としている。 The present invention has been proposed in view of the above problems, and does not require fine adjustment, operates reliably, and even when the protection circuit is operating, transmits at full power in an emergency or the like. It is an object of the present invention to provide a wireless communication device capable of minimizing interruption of a call while being able to perform the communication.
上記課題を解決するために、請求項１の無線通信機は、
連続して送信される時間が規制時間に到達したとき制御信号を出力する計測手段と、
制御信号が入力されたとき送信出力を低減させ、設定された保護時間を経過したときに低減させていた送信出力を元に戻すように制御する保護手段と、
を備えた無線通信機において、
送信出力低減中にフルパワーで送信する必要が生じたときに使うためのキャンセルキーを備えるとともに、
前記保護手段は、
制御信号が入力されて送信出力を低減させている状態で、前記キャンセルキーが押されたときには、低減させていた送信出力を一時的に元の大きさに戻し、設定された許容時間が経過すれば再び送信出力を低減させて送信継続するが、
前記許容時間が経過したときは送信停止せずに送信出力を低減させ、その時点で前記保護時間が既に経過しているときには低減させた送信出力を元に戻すように構成されている。
In order to solve the above problem, a wireless communication device according to claim 1 is
Measuring means for outputting a control signal when the time of continuous transmission reaches the regulation time,
Protection means for reducing the transmission output when the control signal is input, and controlling to return the transmission output that has been reduced when the set protection time has elapsed,
In a wireless communication device equipped with
With a cancel key to use when it is necessary to transmit at full power while reducing the transmission output,
The protection means,
When the cancel key is pressed while the control signal is being input and the transmission output is being reduced, the reduced transmission output is temporarily returned to the original size, and the set allowable time elapses. If the transmission power is reduced again and transmission continues,
When the permissible time has elapsed, the transmission output is reduced without stopping transmission, and at that time, when the protection time has already elapsed, the reduced transmission output is restored.
本発明に係る無線通信機は、
送信出力低減中にフルパワーで送信する必要が生じたときに使うためのキャンセルキーを備えるとともに、保護手段は、制御信号が入力されて送信出力を低減させている状態で、前記キャンセルキーが押されたときには、低減させていた送信出力を一時的に元の大きさに戻して送信を可能とする。
そして、送信中に前記許容時間が経過したときは送信停止せずに送信出力を低減させて送信状態を継続するので、通話の中断は防止できる。
さらに、送信中に前記許容時間が経過した時点で前記保護時間が既に経過しているときには低減させた送信出力を元に戻すので、何らかの操作を行わなくても、元の送信出力で継続して送信でき、送信出力が低減される時間は短時間にできる。
従って、保護回路の微調整の必要がなく、確実に動作するとともに、緊急事態等においては、保護回路が動作中であっても通話が中断することなくできるので、確実な通信が可能となる。
The wireless communication device according to the present invention,
In addition to providing a cancel key to be used when it is necessary to transmit at full power while the transmission output is being reduced, the protection means presses the cancel key while the control signal is being input to reduce the transmission output. When the transmission is performed, the reduced transmission output is temporarily returned to the original size to enable transmission.
Then, when the permissible time has elapsed during the transmission, the transmission output is reduced and the transmission state is continued without stopping the transmission, so that the interruption of the call can be prevented.
Furthermore, when the protection time has already elapsed at the time when the permissible time has elapsed during transmission, the reduced transmission output is returned, so that even if no operation is performed, the transmission output is continued at the original transmission output. The time during which transmission can be performed and the transmission output is reduced can be shortened.
Therefore, the protection circuit does not need to be finely adjusted and operates reliably, and in an emergency or the like, the communication can be performed without interruption even when the protection circuit is operating, so that reliable communication is possible.
以下に本発明の無線通信機の実施例を、図面に基づいて、詳細に説明する。
（実施例１）
図１は本発明にかかる無線通信機の実施例１のブロック図、図２は図１の無線通信機のフローチャートである。
無線通信機１１は，電力増幅部１２と、この電力増幅部１２を小出力（２Ｗ），中出力（７Ｗ），大出力（１０Ｗ）の３段階の送信出力モードに切り換える出力設定スイッチ（図示せず）と、送信時に押す送信スイッチ１４とを備えている。
更に、出力設定スイッチが切り換える出力モードに応じて送信規制をする時間を決定しデータとして出力する規制時間設定回路１５と、電力増幅部１２の連続送信時間が送信規制をする時間を越えたとき制御信号を出力するタイマー回路１６と、制御信号が入力されたとき電力増幅部１２へのドライブ電力をしぼって出力を小さくし電力増幅（終段）素子を保護する終段保護回路１７をも備えている。
また、送信出力低減中にフルパワーで送信する必要が生じたときに使うためのキャンセルキー１３を備えている。
そして、前記終段保護回路１７は、制御信号が入力されて送信出力を低減させている状態で、前記キャンセルキー１３が押されたときには、低減させていた送信出力を一時的に元の大きさに戻し、設定された許容時間が経過すれば再び送信出力を低減させて送信継続するが、前記許容時間が経過したときは送信停止せずに送信出力を低減させ、その時点で前記保護時間が既に経過しているときには低減させた送信出力を元に戻すように構成されている。
Hereinafter, embodiments of the wireless communication device of the present invention will be described in detail with reference to the drawings.
(Example 1)
FIG. 1 is a block diagram of a wireless communication device according to a first embodiment of the present invention, and FIG. 2 is a flowchart of the wireless communication device of FIG.
The wireless communication device 11 includes a power amplifying unit 12 and an output setting switch (shown in the figure) for switching the power amplifying unit 12 to a three-stage transmission output mode of small output (2 W), medium output (7 W), and large output (10 W). ), And a transmission switch 14 to be pressed during transmission.
Further, a regulation time setting circuit 15 for determining a time for restricting transmission according to the output mode switched by the output setting switch and outputting the data as data, and a control when the continuous transmission time of the power amplifier 12 exceeds the time for restricting transmission. It also includes a timer circuit 16 that outputs a signal, and a final-stage protection circuit 17 that, when a control signal is input, squeezes the drive power to the power amplification unit 12 to reduce the output and protect the power amplification (final-stage) element. I have.
In addition, a cancel key 13 is provided for use when it becomes necessary to transmit at full power while the transmission output is being reduced.
When the control signal is input to reduce the transmission output and the cancel key 13 is pressed, the last-stage protection circuit 17 temporarily reduces the reduced transmission output to the original size. When the set permissible time elapses, the transmission output is reduced again and transmission is continued.However, when the permissible time elapses, the transmission output is reduced without stopping transmission, at which point the protection time is reduced. When the elapsed time has elapsed, the reduced transmission output is restored.
なお、図１のブロック図においては、動作を説明しやすいように各処理手段を独立した回路として表したが、実際はＣＰＵとメモリーとでソフトウェアで処理される。ここで、タイマー回路１６が計測手段に、終段保護回路１７が保護手段に対応している。 In the block diagram of FIG. 1, each processing means is shown as an independent circuit for easy explanation of the operation, but is actually processed by software in the CPU and the memory. Here, the timer circuit 16 corresponds to the measuring means, and the last-stage protection circuit 17 corresponds to the protecting means.
前記無線通信機１１の電力増幅部１２には電池電圧がそのまま入力されるので、取り付ける電池の電圧によって送信出力が変化する。例えば、大出力用の１３．８Ｖの電池９ａを取り付ければ送信出力は１０Ｗに、中出力用の９Ｖの電池９ｂを取り付ければ７Ｗに、小出力用の３Ｖの電池９ｃを取り付ければ２Ｗになる。無線通信機１１においては、出力設定スイッチによって、上記の送信出力より小さくすることも可能である。 (4) Since the battery voltage is directly input to the power amplifying unit 12 of the wireless communication device 11, the transmission output changes depending on the voltage of the attached battery. For example, the transmission output is 10 W when a 13.8 V battery 9 a for large output is attached, 7 W when a 9 V battery 9 b for medium output is attached, and 2 W when a 3 V battery 9 c for small output is attached. In the wireless communication device 11, it is possible to make the transmission output smaller than the above-mentioned transmission output by an output setting switch.
次に、図２のフローチャートに基づいて終段保護動作の説明をする。先ず、無線通信機１１に上記の３つの電池のいずれかを取り付ける。電圧検出回路１８は、取り付けた電池の電圧をステップＳ１１，Ｓ１２で４Ｖ以下、４Ｖから１３Ｖ，１３Ｖ以上の３段階に分けて判別し、その電圧データを規制時間設定回路１５に出力する。もちろん、電圧検出回路１８の代わりにコンパレータを用い、電圧に応じて連続的に変化したデータを出力してもよい。規制時間設定回路１５からは、その電圧データに対応する規制時間がステップＳ１３，Ｓ１４，Ｓ１５で設定され、タイマー回路１６に出力される。ステップＳ１６では送信スイッチ１４がチェックされる。送信スイッチ１４が押され、送信状態であれば、ステップＳ１７でタイマー回路１６が送信時間をチェックする。送信時間が規制時間より小さいときは、ステップＳ１６とＳ１７とを周回チェックする。 Next, the last-stage protection operation will be described with reference to the flowchart of FIG. First, any one of the above three batteries is attached to the wireless communication device 11. The voltage detection circuit 18 determines the voltage of the attached battery in three steps of 4 V or less and 4 V to 13 V or 13 V or more in steps S11 and S12, and outputs the voltage data to the regulation time setting circuit 15. Of course, a comparator may be used instead of the voltage detection circuit 18 to output data that continuously changes according to the voltage. The regulation time setting circuit 15 sets the regulation time corresponding to the voltage data in steps S13, S14, and S15, and outputs the regulation time to the timer circuit 16. In step S16, the transmission switch 14 is checked. If the transmission switch 14 is pressed and the transmission is in the transmission state, the timer circuit 16 checks the transmission time in step S17. If the transmission time is shorter than the regulation time, the process goes around steps S16 and S17.
ステップＳ１６で送信中でない（受信中）と判断されたときは、ステップＳ１８で休止時間が設定される。休止時間とは、瞬間的な送信解除によって規制時間がリセットされるのを防止するためのもので、その休止時間（約２，３秒間）は既にタイマー１９内で設定されている。この時間経過と送信状態とをステップＳ１９，Ｓ２０でチェックする。休止時間中に送信されれば、ステップＳ１６に戻り、規制時間の残り時間経過がチェックされる。また、送信停止が休止時間を経過すれば、規制時間はリセットされ、図２の終段保護動作は終了する。 If it is determined in step S16 that transmission is not being performed (receiving), a pause time is set in step S18. The pause time is for preventing the restriction time from being reset due to instantaneous transmission cancellation, and the pause time (about 2 or 3 seconds) is already set in the timer 19. The elapsed time and the transmission state are checked in steps S19 and S20. If the transmission is performed during the suspension time, the process returns to step S16 and the remaining time of the regulation time is checked. When the suspension of transmission elapses after the suspension time, the regulation time is reset, and the end-stage protection operation in FIG. 2 ends.
送信時間が規制時間を経過すれば、タイマー回路１６から制御信号が終段保護回路１７に向けて出力され、ステップＳ２１で終段保護回路１７が動作して電力増幅部１２の送信出力を低下させる。続いて、ステップＳ２２で熱くなった電力増幅部１２を保護するための保護時間が設定される。この値も既に設定されている。ステップＳ２３ではフラグを０とし、強制的にステップＳ２４からステップＳ２５に進める。 When the transmission time exceeds the regulation time, a control signal is output from the timer circuit 16 to the last-stage protection circuit 17, and the last-stage protection circuit 17 operates to reduce the transmission output of the power amplification unit 12 in step S21. . Subsequently, a protection time for protecting the power amplifying unit 12 heated in step S22 is set. This value has already been set. In step S23, the flag is set to 0, and the process forcibly proceeds from step S24 to step S25.
ステップＳ２５ではキャンセルキー１３が押されたかチェックする。キャンセルキー１３は、終段保護回路１７が動作して送信出力低下中に緊急事態が起こり、どうしてもフルパワーで送信する必要が生じたときに使うものである。このキャンセルキー１３が押されていたら、ステップＳ２６で送信出力が一時的に元の大きさになる。しかし、この状態を続ければ電力増幅部１２が熱で破壊されるおそれがあるので、それを防ぐためステップＳ２７で許容時間が設定される。この許容時間は定数である。 In step S25, it is checked whether the cancel key 13 has been pressed. The cancel key 13 is used when an emergency situation occurs while the final-stage protection circuit 17 is operating and the transmission output is reduced, and it is necessary to transmit at full power. If the cancel key 13 has been pressed, the transmission output temporarily returns to the original size in step S26. However, if this state is continued, the power amplifying unit 12 may be destroyed by heat. Therefore, in order to prevent this, the allowable time is set in step S27. This allowable time is a constant.
そして、タイマー１９内で許容時間経過がチェックされる（ステップＳ２８）。許容時間が経過すればステップＳ２９で再び送信出力が低下する。そして、ステップＳ３０でフラグを１とし、ステップＳ２４に戻される。そして、ステップＳ２４からステップＳ３１に送られ、保護時間の経過がチェックされる。
ステップＳ３１で保護時間が既に経過していた場合には、ステップＳ３２で送信出力が元の大きさに戻るので、送信出力が低減される時間は、前記ステップＳ２９、３０、２４、３１、３２までの間の一瞬である。そして、終段保護動作が終了する。
Then, the elapse of the allowable time is checked in the timer 19 (step S28). If the permissible time has elapsed, the transmission output decreases again in step S29. Then, the flag is set to 1 in step S30, and the process returns to step S24. Then, the process is sent from step S24 to step S31, and the elapse of the protection time is checked.
If the protection time has already elapsed in step S31, the transmission output returns to the original size in step S32, so the time for reducing the transmission output is the same as in steps S29, 30, 24, 31, and 32 described above. It is a moment between. Then, the last-stage protection operation ends.
ステップＳ２５でキャンセルキー１３が押されていなかった場合にもステップＳ３１に送られ、保護時間の経過がチェックされる。また、ステップＳ３１では、保護時間がまだ経過していなければ、ステップＳ２４に戻され、出力低下の状態が続く。 に も Even if the cancel key 13 has not been pressed in step S25, the process is sent to step S31, and the elapse of the protection time is checked. In step S31, if the protection time has not yet elapsed, the process returns to step S24, and the state of output reduction continues.
以上の動作を図３のタイムチャートを参照しながら説明する。
図３の（Ａ）に示したように、フルパワーでの送信状態が継続しているとき、規制時間に到達した時点（Ｔ１）で終段保護回路が動作して、送信出力を低減させる。このとき、保護時間の計測がスタートする。（図２のステップＳ17、21、22参照）
そして、前記保護時間を越えた時点（Ｔ２）で前記終段保護回路の動作は終了して、低減されていた送信出力が元の大きさに戻る。（図２のステップＳ24、31、32参照）
The above operation will be described with reference to the time chart of FIG.
As shown in FIG. 3A, when the transmission state at the full power is continued, at the time (T1) when the regulation time is reached, the final stage protection circuit operates to reduce the transmission output. At this time, the measurement of the protection time starts. (See steps S17, S21, S22 in FIG. 2)
Then, when the protection time is exceeded (T2), the operation of the last-stage protection circuit ends, and the reduced transmission output returns to the original magnitude. (See steps S24, 31, 32 in FIG. 2)
次に、図３の（Ｂ）に示したように、前記終段保護回路の動作中にキャンセルキー１３が押された場合には、その時点（Ｔ３）で、低減されていた送信出力は一時的に元の大きさに戻る（図２のステップＳ25、26参照）。また、前記時点（Ｔ３）で許容時間の計測がスタートする（図２のステップＳ27参照）。そして、許容時間を越えた時点（Ｔ４）で送信出力は低減される。（図２のステップＳ28、29参照）
この時点（Ｔ４）で前記保護時間をまだ越えていない場合には送信出力は低減されたままであるが（図２のステップＳ24、31参照）、前記時点（Ｔ４）で前記保護時間を既に越えている場合には送信出力は直ちに元の大きさに戻る。（図２のステップＳ24、31、32参照）
Next, as shown in FIG. 3B, when the cancel key 13 is pressed during the operation of the last-stage protection circuit, the transmission output that has been reduced at that time (T3) is temporarily reduced. It returns to its original size (see steps S25 and S26 in FIG. 2). At the time (T3), the measurement of the allowable time starts (see step S27 in FIG. 2). Then, the transmission output is reduced at the time (T4) when the allowable time is exceeded. (See steps S28 and S29 in FIG. 2)
At this time (T4), if the protection time has not yet been exceeded, the transmission output remains reduced (see steps S24 and S31 in FIG. 2), but the transmission time has already been exceeded at the time (T4). If so, the transmission output immediately returns to its original size. (See steps S24, 31, 32 in FIG. 2)
上記の実施例では、いずれも電池を電源とする携帯用無線通信機の場合で、電池の電圧に基づいて制御する場合を想定して説明したが、電圧ではなく電池容量によって、送信出力が指定されるような無線通信機においては、取り付ける電池に突起を設け、無線通信機本体のスイッチを切り換えて終段保護の規制時間を切り換えるようにしてもよい。また、プラス・マイナスの電極とは別の送信出力検出電極を設け、その検出電圧によって規制時間を切り換えるようにしてもよい。 In the above-described embodiment, the description has been made on the assumption that the control is performed based on the voltage of the battery in the case of a portable wireless communication device that uses a battery as a power supply, but the transmission output is designated by the battery capacity instead of the voltage. In such a wireless communication device, the battery to be attached may be provided with a protrusion, and a switch of the wireless communication device body may be switched to switch the regulation time of the final stage protection. Further, a transmission output detection electrode different from the plus and minus electrodes may be provided, and the regulation time may be switched according to the detection voltage.
１１ 無線通信機
１２ 電力増幅部
１３ キャンセルキー
１４ 送信スイッチ
１５ 規制時間設定回路
１６ タイマー回路、計測手段
１７ 終段保護回路、保護手段
REFERENCE SIGNS LIST 11 wireless communication device 12 power amplifying unit 13 cancel key 14 transmission switch 15 regulated time setting circuit 16 timer circuit, measuring means 17 final stage protection circuit, protection means
Claims (1)
制御信号が入力されたとき送信出力を低減させ、設定された保護時間を経過したときに低減させていた送信出力を元に戻すように制御する保護手段と、
を備えた無線通信機において、
送信出力低減中にフルパワーで送信する必要が生じたときに使うためのキャンセルキーを備えるとともに、
前記保護手段は、
制御信号が入力されて送信出力を低減させている状態で、前記キャンセルキーが押されたときには、低減させていた送信出力を一時的に元の大きさに戻し、設定された許容時間が経過すれば再び送信出力を低減させて送信継続するが、
前記許容時間が経過したときは送信停止せずに送信出力を低減させ、その時点で前記保護時間が既に経過しているときには低減させた送信出力を元に戻すように構成されていることを特徴とする無線通信機。
Measuring means for outputting a control signal when the time of continuous transmission reaches the regulation time,
Protecting means for reducing the transmission output when the control signal is input, and controlling to return the transmission output that has been reduced when the set protection time has elapsed,
In a wireless communication device equipped with
With a cancel key to use when it is necessary to transmit at full power while reducing the transmission output,
The protection means,
When the cancel key is pressed while the control signal is being input and the transmission output is being reduced, the reduced transmission output is temporarily returned to the original size, and the set allowable time elapses. If the transmission power is reduced again and transmission continues,
When the permissible time has elapsed, the transmission output is reduced without stopping transmission, and at that time, the reduced transmission output is restored when the protection time has already elapsed. Wireless communication device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003320574A JP3735623B2 (en) | 2003-09-12 | 2003-09-12 | Wireless communication device |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2003320574A JP3735623B2 (en) | 2003-09-12 | 2003-09-12 | Wireless communication device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1575796A Division JP3591792B2 (en) | 1996-01-31 | 1996-01-31 | Wireless communication equipment |
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| Publication Number | Publication Date |
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| JP2004080803A true JP2004080803A (en) | 2004-03-11 |
| JP3735623B2 JP3735623B2 (en) | 2006-01-18 |
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| JP2003320574A Expired - Lifetime JP3735623B2 (en) | 2003-09-12 | 2003-09-12 | Wireless communication device |
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