JPS58127434A - Communication equipment - Google Patents
Communication equipmentInfo
- Publication number
- JPS58127434A JPS58127434A JP1050682A JP1050682A JPS58127434A JP S58127434 A JPS58127434 A JP S58127434A JP 1050682 A JP1050682 A JP 1050682A JP 1050682 A JP1050682 A JP 1050682A JP S58127434 A JPS58127434 A JP S58127434A
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- amplifier
- temperature
- level
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
- H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Transmitters (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は送信部の温度上昇を制限し、装置の信頼度を
高める通信装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a communication device that limits the temperature rise of a transmitter and increases the reliability of the device.
第１図は従来の移動通信装置を示すブロック図である。FIG. 1 is a block diagram showing a conventional mobile communication device.
同図において、（１）は送信データを変調する変調器、
（２）はこの変調器（１）によって変調された送信信号
を増幅する送信増幅器、（３）は方向性結合＠１−風基
重電圧設定回路、６）は方向性結合器０）の出力を検波
する検波器、（６）は基準電圧設定回路（４）で設定し
た基準電圧とこの検波器６）で検出した送信出力レベル
とを比較する送信制御増幅器、ＣＩ）は送信出力端子で
ある。In the figure, (1) is a modulator that modulates transmission data;
(2) is a transmission amplifier that amplifies the transmission signal modulated by this modulator (1), (3) is a directional coupling @1-wind base heavy voltage setting circuit, and 6) is the output of directional coupler 0). (6) is a transmission control amplifier that compares the reference voltage set by the reference voltage setting circuit (4) with the transmission output level detected by this detector 6), and CI) is a transmission output terminal. .
次に、上記構成による移動通信装置の動作について簡単
に説明する。まず−送信データは変調器（１）で変調さ
れたのち、送信増幅器（力で増幅される。Next, the operation of the mobile communication device with the above configuration will be briefly explained. First - the transmitted data is modulated by a modulator (1) and then amplified by a transmit amplifier (power).
そして、この増幅された送信信号は方向性結合器（３）
を介して送信出力端子（７）から出力する。一方、検波
器（５）は方向性結合器（３）の出力を検波し、送信出
力レベルを送信制御増幅器（６）に出力する。したがっ
て、との送信制御増幅器（６）は検波器（５）で検出さ
れる送信出力レベルと基準電圧設定回路（４）で設定さ
れた基準電圧とを比較し、その送信出力レベルが常に基
準電圧と等しくなるように送信増幅器（２）の駆動電流
を制御する。このため、筐体内の温度上昇などによる送
信増幅器（２）の利得変動などにもかかわらず、送信出
力レベルを常に一定にすることができ、回線品質を一定
に保持することができる。This amplified transmission signal is then sent to a directional coupler (3).
The signal is output from the transmission output terminal (7) via. On the other hand, the detector (5) detects the output of the directional coupler (3) and outputs the transmission output level to the transmission control amplifier (6). Therefore, the transmission control amplifier (6) compares the transmission output level detected by the wave detector (5) with the reference voltage set by the reference voltage setting circuit (4), and the transmission output level is always set to the reference voltage. The drive current of the transmission amplifier (2) is controlled so that it is equal to . Therefore, even though the gain of the transmission amplifier (2) fluctuates due to a rise in temperature within the housing, the transmission output level can always be kept constant, and the line quality can be kept constant.
しかしながら、従来の通信装置では小形化によル、放熱
面積が制限されるため、長時間の連続送信によシ、送信
増幅器周辺の温度上昇が極めて高くなシ、装置の信頼度
上問題となるなどの欠点があった。However, due to the miniaturization of conventional communication equipment, the heat dissipation area is limited, making it difficult for long-term continuous transmission, resulting in an extremely high temperature rise around the transmitting amplifier, and causing problems with the reliability of the equipment. There were drawbacks such as.
したがって、この発明の目的は送信部の温度上昇が周囲
温度に比べ一定値以上に達した場合、送信増幅器の送信
出力レベルを低下させて、温度上昇を制限し、装置の信
頼度を高めるようにした通信装置を提供するものである
。Therefore, an object of the present invention is to reduce the transmission output level of the transmission amplifier when the temperature rise in the transmitting section reaches a certain value or more compared to the ambient temperature, thereby limiting the temperature rise and increasing the reliability of the device. The present invention provides a communication device that has the following features.
このような目的を達成するため、この発明は送信増幅器
を含む送信部の温度と周囲温度との温度差が規定値より
高い値になったとき、送信制御増幅器によって送信増幅
器の駆動電流を制限し、送信出力レベルを規定値よシ低
い値にするものであり、以下実施例を用いて詳細に説明
する。In order to achieve such an object, the present invention limits the driving current of the transmitting amplifier by the transmitting control amplifier when the temperature difference between the temperature of the transmitting section including the transmitting amplifier and the ambient temperature becomes higher than a specified value. , which sets the transmission output level to a value lower than the specified value, and will be explained in detail below using an example.
第２図はとの発明に係る通信装置の一実施例を示すブロ
ック図である。同図において、（８）は送信増幅器（２
）の近辺に設置し、送信部の温度を検出するサーミスタ
などの感熱素子を含む送信部温度検出回路、０）は送信
増幅器Ｑ）を含む送信部から離れた場所、例えば、筐体
表面に設置し、周囲温度を検出するサーミスタなどの感
熱素子を含む周囲温度検出回路、（１０）は送信部の温
度と周囲温度との温度差Ｔ・に対してＶｔＸレベルの第
１指示信号および温度差Ｔｌ （Ｔｕ、＞Ｔｏ）に対し
てＶｔＸレベルの第２指示信号を出力する温度差設定回
路、（１１）は送信部の温度と周囲温度との温度差を算
出し、その温度差がＴｏのときにはＶｔ・レベルの第１
指示信号を選択して出力し、その温度差がＴＩのときに
はＶｔＸレベルの第２指示信号を選択して出力する比較
増幅回路、（１２）はこの比較増幅器（１１）の第１指
示信号が入力したときには基準電圧Ｖ。FIG. 2 is a block diagram showing an embodiment of a communication device according to the invention. In the same figure, (8) is the transmission amplifier (2
) is installed near the transmitter, and includes a heat-sensitive element such as a thermistor to detect the temperature of the transmitter. 0) is installed at a location away from the transmitter including the transmitter amplifier Q), for example, on the surface of the housing. An ambient temperature detection circuit including a heat sensitive element such as a thermistor for detecting ambient temperature, (10) is a first instruction signal at VtX level and a temperature difference Tl for a temperature difference T between the temperature of the transmitter and the ambient temperature. A temperature difference setting circuit that outputs a second instruction signal at the VtX level for (Tu, >To), (11) calculates the temperature difference between the temperature of the transmitter and the ambient temperature, and when the temperature difference is To, Vt level 1
A comparison amplifier circuit (12) selects and outputs an instruction signal, and selects and outputs a second instruction signal at the VtX level when the temperature difference is TI, and the first instruction signal of this comparison amplifier (11) is input to (12). When it does, the reference voltage is V.
を出力し、第２指示信号が入力したときには基準あるい
はｖｌと検波器■から入力する送信出力レベルとを比較
し、基準電圧Ｖ・が入力している場合に拡送信出力レベ
ルが規定値Ｐ・になるように送信増幅器（２）の駆動電
流を制御し、基準電圧ｖ１が入力している場合には送信
出力レベルが規定値Ｐ、 よシ低い第２の規定値Ｐ、
になるように送信増幅器０）の駆動電流を制御する送信
制御増幅器である。is output, and when the second instruction signal is input, the reference or vl is compared with the transmission output level input from the detector ■, and when the reference voltage V is input, the spread transmission output level becomes the specified value P. The drive current of the transmission amplifier (2) is controlled so that when the reference voltage v1 is input, the transmission output level is the specified value P, a lower second specified value P,
This is a transmission control amplifier that controls the drive current of the transmission amplifier 0) so that
次に、上記構成による通信装置の動作について第３図お
よび第４図を参照して説明する。まず、送信データは変
調器（１）で変調されたのち、送信増幅器（刀で増幅さ
れる。そして、この増幅された送信信号は方向性結合器
（３）ｔ−介して送信出力端子（′Ｉ）から出力する。Next, the operation of the communication device with the above configuration will be explained with reference to FIGS. 3 and 4. First, the transmission data is modulated by the modulator (1), and then amplified by the transmission amplifier (sword).Then, this amplified transmission signal is passed through the directional coupler (3) to the transmission output terminal (' Output from I).
一方、検波器（５）は方向性結合器（３）の出力を検波
し、送信出力レベルを送信制御増幅器（１３）に出力す
る。したがって、この送信制御増幅器（１３）は検波器
（ジから入力する送信出力レベルと基準電圧設定回路（
１２）から入力する基準電圧（Ｖ＠あるいはＶ、 ）と
を比較し、その送信出力レベルが基準電圧に等しくなる
ように送信増幅器（りの駆動電流を制御する。このため
、送信出力レベルを常に一定にすることができる。そし
て、送信部温度検出器（８）で検出される送信部の温度
と周囲温度検出回路（９）で検出される周囲温度との温
度差が’ｒｅ以下のときには比較増幅回路（１１）は温
度差設定回路（１０）から入力するＶｔＯレベルの第１
指示信号を選択して出力する。このため、基準電圧設定
回路（１２）Ｆｉ、この第１指示信号の入力によって動
作し、対応する基準電圧ｖｏを出力する。On the other hand, the detector (5) detects the output of the directional coupler (3) and outputs the transmission output level to the transmission control amplifier (13). Therefore, this transmission control amplifier (13) is connected to the transmission output level input from the detector (the reference voltage setting circuit (13)).
12) is compared with the reference voltage (V@ or V, When the temperature difference between the transmitter temperature detected by the transmitter temperature detector (8) and the ambient temperature detected by the ambient temperature detection circuit (9) is less than 're, the comparison is made. The amplifier circuit (11) receives the first VtO level input from the temperature difference setting circuit (10).
Select and output the instruction signal. Therefore, the reference voltage setting circuit (12) Fi operates upon input of this first instruction signal and outputs the corresponding reference voltage vo.
したがって、上述したように、送信制御増幅器（１３）
ｔｉ送信出力レベルが規定値Ｐ・（第３図参照）にな
るように送信増幅器（２）の駆動電流を制御する。Therefore, as mentioned above, the transmission control amplifier (13)
The drive current of the transmission amplifier (2) is controlled so that the ti transmission output level becomes a specified value P· (see FIG. 3).
次に、長時間にわた多通信を継続すると、送信増幅器（
２）を含む送信部の温度が上昇する。このため、送信部
温度検出器（８）で検ｉされる送信部の温度と周囲温度
検出回路（９）で検出される周囲温度との温度差が第４
図に示すようにＴｏ （Ｔｔ＞Ｔ・）になったとき、比
較増幅器ｊｌ （１１）は温度差設定回路（１０）から
出力するＶＴルベルの第２指示信号を選択して出力する
。このため、基準電圧設定回路（１２）はこの第２指示
信号の入力によって動作し、対応する基準電圧ｖ１を出
力する。したがって、上述したように、送信制御増幅器
（１３）はこの基準電圧Ｖｌの入力によシ、送信出力レ
ベルを規定値ｐ０より低い第２の規定値Ｐｕ （第３図
参照）になるように送信増幅器（２）の駆動電流を制御
する。このため、送信部の温度が第４図に示すように徐
々に下降し、再び温度差’ｒｅ Ｋなシ、送信出力レベ
ルも規定値Ｐ０にもどる。Next, if multiple communications continue for a long time, the transmitting amplifier (
2) The temperature of the transmitting section including the temperature rises. Therefore, the temperature difference between the temperature of the transmitter detected by the transmitter temperature detector (8) and the ambient temperature detected by the ambient temperature detection circuit (9) is the fourth.
As shown in the figure, when To (Tt>T·), the comparator amplifier jl (11) selects and outputs the second instruction signal of the VT level output from the temperature difference setting circuit (10). Therefore, the reference voltage setting circuit (12) operates upon input of this second instruction signal and outputs the corresponding reference voltage v1. Therefore, as described above, the transmission control amplifier (13) receives the reference voltage Vl and transmits data so that the transmission output level becomes the second specified value Pu (see Fig. 3), which is lower than the specified value p0. Controls the drive current of the amplifier (2). For this reason, the temperature of the transmitting section gradually decreases as shown in FIG. 4, and when the temperature difference becomes Kre K again, the transmitting output level also returns to the specified value P0.
表お、以上の実施例では送信レベルが一定になるように
、制御ループを設けたが、このような制御ループを有し
ない場合についても同様に実施できることはもちろんで
ある。また、移動通信装置について説明したが、小形化
が必要な固定通信装置についても同様に実施できること
はもちろんである。In the above embodiments, a control loop was provided to keep the transmission level constant, but it goes without saying that the same method can be implemented without such a control loop. Further, although the description has been made regarding a mobile communication device, it goes without saying that the present invention can also be implemented in a similar manner to a fixed communication device that needs to be miniaturized.
以上詳細に説明したように、この発明に係る通信装置に
よれば送信部の温度上昇を規定値以下に制限できるため
、装置の信頼度を高めることができる効果がある。As described above in detail, according to the communication device according to the present invention, the temperature rise of the transmitting section can be limited to a specified value or less, so that the reliability of the device can be improved.
第１図は従来の移動通信装置を示すブロック図、第２図
はこの発明に係る通信装置の一実胞例を示すブロック図
、第３図は第２図における温度差と送信出力レベルとの
関係を示す図、第４図は第２図における送信部の温度差
の時間経過を示す因である。
（１）・・・・変調器、（乃・・・・送信増幅器、（（
至）・・・・方向性結合器、（４）・・・・基準電圧設
定回路、６）・・・・検波器、（６）・・・・送信制御
増幅器、（７）・・・・送信出力端子、（８）・・・・
送信部温度検出回路、（９）・・・・周囲温度検出回路
、（１３）・・・・送信部・御増幅器。
なお、図中、同一符号は同一または相当部分を示す。
代理人 葛野信−（外１名）
第１図
第２図
第３図
第４図FIG. 1 is a block diagram showing a conventional mobile communication device, FIG. 2 is a block diagram showing an example of a communication device according to the present invention, and FIG. 3 is a diagram showing the relationship between the temperature difference and the transmission output level in FIG. A diagram showing the relationship, FIG. 4, is a factor showing the time course of the temperature difference of the transmitter in FIG. 2. (1)...Modulator, (No...Transmission amplifier, ((
To)... Directional coupler, (4)... Reference voltage setting circuit, 6)... Detector, (6)... Transmission control amplifier, (7)... Transmission output terminal, (8)...
Transmitter temperature detection circuit, (9)...ambient temperature detection circuit, (13)...transmitter/control amplifier. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Makoto Kuzuno (1 other person) Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
電圧になるように送信制御増幅器によって送信増幅器の
駆動電流を制御し、送信出力レベルを常に一定に維持す
る通信装置において、前記送信増幅器を含む送信部の温
度と周囲温度との温度差が規定値よシ高い値になったと
き、送信制御増幅器によって送信増幅器の駆動電流を制
限し、送信出力レベルを規定値よシ低い値にすることを
特徴とする通信装置。In a communication device that controls a drive current of a transmission amplifier by a transmission control amplifier so that the transmission output level output from the transmission amplifier becomes a set reference voltage, and maintains the transmission output level constant, a transmission section including the transmission amplifier. When the temperature difference between the temperature of communication equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1050682A JPS58127434A (en) | 1982-01-25 | 1982-01-25 | Communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1050682A JPS58127434A (en) | 1982-01-25 | 1982-01-25 | Communication equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58127434A true JPS58127434A (en) | 1983-07-29 |
| JPS6324570B2 JPS6324570B2 (en) | 1988-05-21 |
Family
ID=11752089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1050682A Granted JPS58127434A (en) | 1982-01-25 | 1982-01-25 | Communication equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58127434A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60150833U (en) * | 1984-03-19 | 1985-10-07 | 株式会社ケンウッド | transmitter |
| JPS6271930U (en) * | 1985-10-25 | 1987-05-08 | ||
| JPS62203429A (en) * | 1986-03-04 | 1987-09-08 | Nec Corp | Transmission power control circuit |
| JPS6354026A (en) * | 1986-08-25 | 1988-03-08 | Hitachi Ltd | Temperature rise warning device |
| JPS63127625A (en) * | 1986-11-18 | 1988-05-31 | Nec Corp | On-vehicle adaptor for portable radio equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS479281U (en) * | 1971-02-18 | 1972-10-04 | ||
| JPS5510252A (en) * | 1978-07-10 | 1980-01-24 | Kanda Tsushin Kogyo Kk | Transmission output control circuit |
| JPS5887923A (en) * | 1981-11-19 | 1983-05-25 | Mitsubishi Electric Corp | Transmission controller |
-
1982
- 1982-01-25 JP JP1050682A patent/JPS58127434A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS479281U (en) * | 1971-02-18 | 1972-10-04 | ||
| JPS5510252A (en) * | 1978-07-10 | 1980-01-24 | Kanda Tsushin Kogyo Kk | Transmission output control circuit |
| JPS5887923A (en) * | 1981-11-19 | 1983-05-25 | Mitsubishi Electric Corp | Transmission controller |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60150833U (en) * | 1984-03-19 | 1985-10-07 | 株式会社ケンウッド | transmitter |
| JPS6271930U (en) * | 1985-10-25 | 1987-05-08 | ||
| JPS62203429A (en) * | 1986-03-04 | 1987-09-08 | Nec Corp | Transmission power control circuit |
| JPS6354026A (en) * | 1986-08-25 | 1988-03-08 | Hitachi Ltd | Temperature rise warning device |
| JPS63127625A (en) * | 1986-11-18 | 1988-05-31 | Nec Corp | On-vehicle adaptor for portable radio equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6324570B2 (en) | 1988-05-21 |
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