JPH08125598A - Mobil body communication equipment - Google Patents
Mobil body communication equipmentInfo
- Publication number
- JPH08125598A JPH08125598A JP6255271A JP25527194A JPH08125598A JP H08125598 A JPH08125598 A JP H08125598A JP 6255271 A JP6255271 A JP 6255271A JP 25527194 A JP25527194 A JP 25527194A JP H08125598 A JPH08125598 A JP H08125598A
- Authority
- JP
- Japan
- Prior art keywords
- transmission power
- circuit
- battery
- transmission
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Transmitters (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電池を電源とする携帯
電話機などの小型移動体通信装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small mobile communication device such as a mobile phone which uses a battery as a power source.
【０００２】[0002]
【従来の技術】近来、電池を電源とする携帯電話機など
の小型移動体通信装置は、小型化，低消費電力化が進
み、使用可能時間の延長が図られている。移動体通信装
置の送信可能時間の延長を図るためには、送信時に最も
多くの電力を消費する送信電力増幅器の電力効率を向上
させることが重要となる。2. Description of the Related Art Recently, a small mobile communication device such as a mobile phone using a battery as a power source has been downsized and reduced in power consumption, and its usable time has been extended. In order to extend the transmittable time of the mobile communication device, it is important to improve the power efficiency of the transmission power amplifier that consumes the most power during transmission.
【０００３】以下、図面を参照しながら従来の移動体通
信装置の一例について説明する。An example of a conventional mobile communication device will be described below with reference to the drawings.
【０００４】図４は従来のこの種の移動体通信装置にお
ける電源と送信電力増幅回路及びその制御回路の関係を
示すものである。図中、１は送信信号入力端子、２は送
信電力増幅回路、３は送信電力出力端子、４は送信電力
増幅回路２の電池電源回路、５は送信電力レベル制御回
路である。この図４から明らかなように、送信信号入力
端子１から入力される送信信号は、送信電力増幅回路２
により増幅されて送信電力出力端子３へ出力され、アン
テナ等の電波放射部材(図示省略)へと導かれる。ここ
で、送信電力増幅回路２の電池電源回路４の電圧を一定
として、送信電力レベル制御回路５により、送信出力レ
ベルを変化させた場合の送信電力増幅回路２の電力効率
の変化を図５に示す。この図５から明らかなように、送
信電力レベルの高いときに較べて、送信電力レベルが低
いときの方が明らかに電力効率が悪いことが判る。FIG. 4 shows the relationship between a power supply, a transmission power amplifier circuit and its control circuit in a conventional mobile communication device of this type. In the figure, 1 is a transmission signal input terminal, 2 is a transmission power amplification circuit, 3 is a transmission power output terminal, 4 is a battery power supply circuit of the transmission power amplification circuit 2, and 5 is a transmission power level control circuit. As is apparent from FIG. 4, the transmission signal input from the transmission signal input terminal 1 is transmitted by the transmission power amplifier circuit 2
Is amplified by and output to the transmission power output terminal 3, and is guided to a radio wave radiating member (not shown) such as an antenna. Here, FIG. 5 shows changes in the power efficiency of the transmission power amplification circuit 2 when the transmission power level control circuit 5 changes the transmission output level while the voltage of the battery power supply circuit 4 of the transmission power amplification circuit 2 is kept constant. Show. As is clear from FIG. 5, the power efficiency is clearly lower when the transmission power level is lower than when the transmission power level is high.
【０００５】[0005]
【発明が解決しようとする課題】上記の通り、従来の移
動体通信装置においては、送信電力レベルの高いときに
較べて、送信電力レベルが低いときの方が明らかに電力
効率が落ちており、この点を改善しない限り、移動体通
信装置の低消費電力化は図れない。As described above, in the conventional mobile communication device, the power efficiency is obviously lower when the transmission power level is lower than when the transmission power level is high, Unless this point is improved, the power consumption of the mobile communication device cannot be reduced.
【０００６】本発明は、このような従来の問題を解決す
るものであり、送信電力レベルの低下に伴う電力効率の
低下を抑え、送信可能時間の延長を図ることができる移
動体通信装置を提供することを目的とする。The present invention solves such a conventional problem, and provides a mobile communication apparatus capable of suppressing a decrease in power efficiency due to a decrease in transmission power level and extending a transmittable time. The purpose is to do.
【０００７】[0007]
【課題を解決するための手段】本発明は、複数個の電池
を有する電池電源回路と、前記電池電源回路から電力を
供給される送信電力増幅回路と、前記電池電源回路内の
複数個の電池を直列接続及び並列接続に切り換える電池
切換手段と、前記送信電力増幅回路の送信電力レベルの
制御を行うとともに、前記送信電力のレベル変化に対応
して前記電池切換手段を制御する送信電力レベル制御回
路とより成り、送信電力のレベル変化に対応した送信電
力増幅回路の高電力効率を得るようにしたものである。SUMMARY OF THE INVENTION The present invention is a battery power supply circuit having a plurality of batteries, a transmission power amplifier circuit supplied with power from the battery power supply circuit, and a plurality of batteries in the battery power supply circuit. And a transmission power level control circuit for controlling the transmission power level of the transmission power amplification circuit and controlling the battery switching means in response to the change in the transmission power level. And the high power efficiency of the transmission power amplifier circuit corresponding to the change in the level of the transmission power is obtained.
【０００８】[0008]
【作用】上記構成により、送信電力レベルに応じて電源
電池の接続を変えて送信電力増幅回路の電源電圧を制御
することにより、送信電力レベルの低下に伴う電力効率
の低下を抑える。With the above configuration, the connection of the power supply battery is changed according to the transmission power level to control the power supply voltage of the transmission power amplifier circuit, thereby suppressing the decrease in power efficiency due to the decrease in the transmission power level.
【０００９】[0009]
【実施例】以下、本発明の第１実施例について図面を参
照しながら説明する。図中、前記従来例と同一の部分は
同一符号を付すものとする。図１(a)は本発明の移動体
通信装置の第１実施例を示す回路構成図であり、図中、
１は送信信号入力端子、２は送信電力増幅回路、３は送
信電力出力端子、６は送信電力増幅回路２の電池電源回
路で、電源ライン７により送信電力増幅回路２に接続さ
れている。８は送信電力レベル制御回路で、電力レベル
制御ライン９を通して送信電力増幅回路２を制御すると
ともに、電源制御ライン10を通して電池電源回路６を制
御する。この電池電源回路６の具体的回路は図１(b)に
示すようになっており、図２において、Ｂ1，Ｂ2は電
池、ＳＷはスイッチ回路で、互いに連動するスイッチＳ
Ｗ1，ＳＷ2により構成され、それぞれ図示のように接続
されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. In the figure, the same parts as those in the conventional example are designated by the same reference numerals. FIG. 1 (a) is a circuit configuration diagram showing a first embodiment of a mobile communication device of the present invention.
Reference numeral 1 is a transmission signal input terminal, 2 is a transmission power amplification circuit, 3 is a transmission power output terminal, 6 is a battery power supply circuit of the transmission power amplification circuit 2, and is connected to the transmission power amplification circuit 2 by a power supply line 7. A transmission power level control circuit 8 controls the transmission power amplification circuit 2 through a power level control line 9 and a battery power supply circuit 6 through a power supply control line 10. The specific circuit of the battery power supply circuit 6 is as shown in FIG. 1 (b). In FIG. 2, B 1 and B 2 are batteries, SW is a switch circuit, and a switch S interlocking with each other.
It is composed of W 1 and SW 2 , and is connected as shown in the drawing.
【００１０】次にその動作を説明する。まず、高い送信
電力レベルが必要になったときには、送信電力レベル制
御回路８が電池電源回路６内のスイッチ回路ＳＷを制御
してスイッチＳＷ1，ＳＷ2を図示の位置に設定する。こ
の設定位置においては電池Ｂ1，Ｂ2は直列接続となり、
送信電力増幅回路２にその電圧が供給され、送信信号入
力端子１から入力される送信信号は、この状態の送信電
力増幅回路２により増幅されて送信電力出力端子３へ出
力される。このときの送信電力レベルと電力効率の関係
は図２に示す特性曲線Ａに示すようになる。また、低い
送信電力レベルのときには、同様にスイッチ回路ＳＷが
制御されてスイッチＳＷ1，ＳＷ2は図示と反対の位置に
設定される。この設定位置においては電池Ｂ1，Ｂ2は並
列接続となり、送信電力増幅回路２にはその電圧が供給
され、前記送信信号は、この状態の送信電力増幅回路２
により増幅されて送信電力出力端子３へ出力される。こ
のときの送信電力レベルと電力効率の関係は図２に示す
特性曲線Ｂに示すようになり、高い送信電力レベルは出
力できないが、低い送信電力レベルの所で電力効率は高
くなる。Next, the operation will be described. First, when a high transmission power level is required, the transmission power level control circuit 8 controls the switch circuit SW in the battery power supply circuit 6 to set the switches SW 1 and SW 2 to the positions shown in the figure. At this setting position, batteries B 1 and B 2 are connected in series,
The voltage is supplied to the transmission power amplification circuit 2, and the transmission signal input from the transmission signal input terminal 1 is amplified by the transmission power amplification circuit 2 in this state and output to the transmission power output terminal 3. The relationship between the transmission power level and the power efficiency at this time is as shown by the characteristic curve A shown in FIG. Further, when the transmission power level is low, the switch circuit SW is similarly controlled to set the switches SW 1 and SW 2 to positions opposite to those shown in the figure. At this set position, the batteries B 1 and B 2 are connected in parallel, the voltage is supplied to the transmission power amplification circuit 2, and the transmission signal is transmitted in this state.
Is amplified and output to the transmission power output terminal 3. The relationship between the transmission power level and the power efficiency at this time is as shown by the characteristic curve B in FIG. 2, and although the high transmission power level cannot be output, the power efficiency becomes high at the low transmission power level.
【００１１】このように、本実施例によれば、送信電力
レベル変化に対応して電源電圧を変えることにより、低
い送信電力レベルの場合にも送信電力増幅回路２の高電
力効率化を達成することができる。As described above, according to the present embodiment, by changing the power supply voltage in response to the change in the transmission power level, the transmission power amplifier circuit 2 can be made highly efficient even when the transmission power level is low. be able to.
【００１２】図３は本発明の移動体通信装置の第２実施
例を示す回路構成図である。図中、前記従来例，第１実
施例と同一の部分は同一符号を付すものとする。図３に
おいて、１は送信信号入力端子、11は大電力時に高電力
効率となるように設計された大電力用送信電力増幅回
路、12は小電力時に高電力効率となるように設計された
小電力用送信電力増幅回路、３は送信電力出力端子、６
は大電力用送信電力増幅回路11と小電力用送信電力増幅
回路12の電池電源回路で、スイッチＳＷ3を介して電源
ライン７により各送信電力増幅回路11，12に接続されて
いる。なお、この電池電源回路６の内部構造は前記図１
(b)に示したものと同一である。ＳＷ4，ＳＷ5もスイッ
チで、スイッチＳＷ3と互いに連動する。８は送信電力
レベル制御回路で、電力レベル制御ライン９を通して各
送信電力増幅回路11，12を制御するとともに、電源制御
ライン10を通して電池電源回路６を制御し、更に切換制
御ライン13を通してスイッチＳＷ3，ＳＷ4，ＳＷ5を切
換制御する。FIG. 3 is a circuit configuration diagram showing a second embodiment of the mobile communication device of the present invention. In the figure, the same parts as those in the conventional example and the first embodiment are designated by the same reference numerals. In FIG. 3, 1 is a transmission signal input terminal, 11 is a high power transmission power amplifier circuit designed to have high power efficiency at high power, and 12 is a small circuit designed to have high power efficiency at low power. Power transmission power amplifier circuit, 3 is a transmission power output terminal, 6
Is a battery power supply circuit for the large power transmission power amplification circuit 11 and the small power transmission power amplification circuit 12, and is connected to the respective transmission power amplification circuits 11, 12 by the power supply line 7 via the switch SW 3 . The internal structure of the battery power supply circuit 6 is shown in FIG.
It is the same as shown in (b). SW 4 and SW 5 are also switches, and are interlocked with the switch SW 3 . A transmission power level control circuit 8 controls each transmission power amplification circuit 11 and 12 through a power level control line 9, a battery power supply circuit 6 through a power supply control line 10, and a switch SW 3 through a switching control line 13. , SW 4 and SW 5 are switched and controlled.
【００１３】次にその動作を説明する。まず、高い送信
電力レベルが必要になったときには、送信電力レベル制
御回路８が前記各スイッチＳＷ3，ＳＷ4，ＳＷ5を図示
の位置に設定し、電池電源回路６内のスイッチ回路ＳＷ
を制御してスイッチＳＷ1，ＳＷ2を図１(b)図示の位置
に設定する。この設定位置においては電池Ｂ1，Ｂ2は直
列接続となり、大電力用送信電力増幅回路11にその電圧
が供給され、送信信号入力端子１から入力される送信信
号は、大電力用送信電力増幅回路11により増幅されて送
信電力出力端子３へ出力される。また、低い送信電力レ
ベルのときには、同様に送信電力レベル制御回路８が前
記各スイッチＳＷ3，ＳＷ4，ＳＷ5を図示と反対の位置
に設定し、また電池電源回路６内のスイッチＳＷ1，Ｓ
Ｗ2を図１(b)図示の位置とは反対の位置に設定する。こ
の設定位置においては電池Ｂ1，Ｂ2は並列接続となり、
小電力用送信電力増幅回路12にはその電圧が供給され、
前記送信信号は、小電力用送信電力増幅回路12により増
幅されて送信電力出力端子３へ出力される。このように
すれば、前記第１実施例に対して、電力効率を考えて設
計された大電力，小電力専用の各送信電力増幅回路11，
12による電力効率の改善効果が更に加わった形となり、
電力効率はより高くなる。Next, the operation will be described. First, when a high transmission power level is required, the transmission power level control circuit 8 sets the switches SW 3 , SW 4 , and SW 5 to the positions shown in the figure, and the switch circuit SW in the battery power supply circuit 6 is set.
To set the switches SW 1 and SW 2 to the positions shown in FIG. 1 (b). At this setting position, the batteries B 1 and B 2 are connected in series, the voltage is supplied to the high power transmission power amplifier circuit 11, and the transmission signal input from the transmission signal input terminal 1 is amplified by the high power transmission power amplifier. The signal is amplified by the circuit 11 and output to the transmission power output terminal 3. Further, when the transmission power level is low, the transmission power level control circuit 8 similarly sets the switches SW 3 , SW 4 , and SW 5 to positions opposite to those shown in the drawing, and the switch SW 1 in the battery power supply circuit 6 S
W 2 is set at a position opposite to the position shown in FIG. At this setting position, batteries B 1 and B 2 are connected in parallel,
The voltage is supplied to the small power transmission power amplifier circuit 12,
The transmission signal is amplified by the low power transmission power amplifier circuit 12 and output to the transmission power output terminal 3. With this configuration, compared with the first embodiment, the transmission power amplifier circuits 11 for high power and low power, which are designed in consideration of power efficiency,
It becomes a form that the effect of improving power efficiency by 12 is further added,
Power efficiency will be higher.
【００１４】なお、上記第２実施例においては、送信電
力増幅回路を２系統使用したが、これは３系統以上で構
成してもよい。In the second embodiment, the transmission power amplifier circuit is used in two systems, but it may be composed of three or more systems.
【００１５】[0015]
【発明の効果】本発明は、上記実施例から明らかなよう
に、送信電力レベルの変化に応じて電源電池の接続を変
え、送信電力増幅回路の電源電圧を制御することによ
り、送信電力レベル変化に応じた送信電力増幅回路の高
効率化を達成することができ、移動体通信装置としての
送信可能時間の延長を図ることができる。As is apparent from the above embodiments, the present invention changes the transmission power level by changing the connection of the power supply battery according to the change in the transmission power level and controlling the power supply voltage of the transmission power amplifier circuit. It is possible to achieve high efficiency of the transmission power amplifier circuit according to the above, and it is possible to extend the transmittable time of the mobile communication device.
【図１】本発明の移動体通信装置の第１実施例を示す回
路構成図である。FIG. 1 is a circuit configuration diagram showing a first embodiment of a mobile communication device of the present invention.
【図２】本発明の実施例における送信電力レベルと電力
効率の関係を示す曲線図である。FIG. 2 is a curve diagram showing the relationship between transmission power level and power efficiency in the embodiment of the present invention.
【図３】本発明の移動体通信装置の第２実施例を示す回
路構成図である。FIG. 3 is a circuit configuration diagram showing a second embodiment of the mobile communication device of the present invention.
【図４】従来の移動体通信装置の一例を示す回路構成図
である。FIG. 4 is a circuit configuration diagram showing an example of a conventional mobile communication device.
【図５】従来例における送信電力レベルと電力効率の関
係を示す曲線図である。FIG. 5 is a curve diagram showing the relationship between transmission power level and power efficiency in a conventional example.
１…送信信号入力端子、 ２…送信電力増幅回路、 ３
…送信電力出力端子、４，６…電池電源回路、 ５，８
…送信電力レベル制御回路、 ７…電源ライン、 ９…
電力レベル制御ライン、 10…電源制御ライン、 11…
大電力用送信電力増幅回路、 12…小電力用送信電力増
幅回路、 13…切換制御ライン、 ＳＷ…スイッチ回
路、 ＳＷ1，ＳＷ2，ＳＷ3，ＳＷ4，ＳＷ5…スイッ
チ、 Ｂ1，Ｂ2…電池。1 ... Transmission signal input terminal, 2 ... Transmission power amplifier circuit, 3
… Transmission power output terminals, 4,6… Battery power supply circuit, 5,8
... Transmission power level control circuit, 7 ... Power supply line, 9 ...
Power level control line, 10 ... Power control line, 11 ...
Transmission power amplifying circuit for high-power, 12 ... small power transmission power amplifying circuit, 13 ... switching control line, SW ... switching circuit, SW 1, SW 2, SW 3, SW 4, SW 5 ... Switch, B 1, B 2 ... Batteries.
Claims (2)
前記電池電源回路から電力を供給される送信電力増幅回
路と、前記電池電源回路内の複数個の電池を直列接続及
び並列接続に切り換える電池切換手段と、前記送信電力
増幅回路の送信電力レベルの制御を行うとともに、前記
送信電力のレベル変化に対応して前記電池切換手段を制
御する送信電力レベル制御回路とより成り、送信電力の
レベル変化に対応した送信電力増幅回路の高電力効率を
得ることを特徴とする移動体通信装置。1. A battery power supply circuit having a plurality of batteries,
A transmission power amplification circuit supplied with power from the battery power supply circuit, a battery switching means for switching a plurality of batteries in the battery power supply circuit between serial connection and parallel connection, and control of transmission power level of the transmission power amplification circuit And a transmission power level control circuit for controlling the battery switching means in response to the change in the level of the transmission power to obtain high power efficiency of the transmission power amplifier circuit corresponding to the change in the level of the transmission power. A characteristic mobile communication device.
前記電池電源回路から電力を供給される複数の送信電力
増幅回路と、前記電池電源回路内の複数個の電池を直列
接続及び並列接続に切り換える電池切換手段と、前記複
数の送信電力増幅回路を前記電池切換手段と連動して選
択する回路切換手段と、前記各送信電力増幅回路の送信
電力レベルの制御を行うとともに、前記送信電力のレベ
ル変化に対応して前記電池切換手段及び回路切換手段を
制御する送信電力レベル制御回路とより成り、送信電力
のレベル変化に対応した送信電力増幅回路の高電力効率
を得ることを特徴とする移動体通信装置。2. A battery power supply circuit having a plurality of batteries,
A plurality of transmission power amplification circuits supplied with power from the battery power supply circuit; a battery switching means for switching a plurality of batteries in the battery power supply circuit between serial connection and parallel connection; and the plurality of transmission power amplification circuits. The circuit switching means for selecting in cooperation with the battery switching means and the transmission power level of each of the transmission power amplifier circuits are controlled, and the battery switching means and the circuit switching means are controlled in response to the change in the transmission power level. A mobile communication device, comprising: a transmission power level control circuit for controlling the transmission power level, and obtaining a high power efficiency of the transmission power amplification circuit corresponding to a change in the transmission power level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6255271A JPH08125598A (en) | 1994-10-20 | 1994-10-20 | Mobil body communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6255271A JPH08125598A (en) | 1994-10-20 | 1994-10-20 | Mobil body communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08125598A true JPH08125598A (en) | 1996-05-17 |
Family
ID=17276434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6255271A Pending JPH08125598A (en) | 1994-10-20 | 1994-10-20 | Mobil body communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08125598A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004112730A (en) * | 2002-06-11 | 2004-04-08 | Tai-Her Yang | Wireless information device |
-
1994
- 1994-10-20 JP JP6255271A patent/JPH08125598A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004112730A (en) * | 2002-06-11 | 2004-04-08 | Tai-Her Yang | Wireless information device |
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