JPH01180139A - Power monitoring circuit - Google Patents
Power monitoring circuitInfo
- Publication number
- JPH01180139A JPH01180139A JP63004136A JP413688A JPH01180139A JP H01180139 A JPH01180139 A JP H01180139A JP 63004136 A JP63004136 A JP 63004136A JP 413688 A JP413688 A JP 413688A JP H01180139 A JPH01180139 A JP H01180139A
- Authority
- JP
- Japan
- Prior art keywords
- reference voltage
- voltage
- power
- switch
- power amplifier
- 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
- 238000012544 monitoring process Methods 0.000 title abstract description 4
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 101710178035 Chorismate synthase 2 Proteins 0.000 abstract 1
- 101710152694 Cysteine synthase 2 Proteins 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 241001181114 Neta Species 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/02—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings
- C07D263/08—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D263/16—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D263/18—Oxygen atoms
- C07D263/20—Oxygen atoms attached in position 2
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電力モニタ回路に関し、特に無線送信機などが
規定レベル以上で電力を出力しているかあるいはオフに
なっているかをモニタする電力モニタ回路に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a power monitor circuit, and particularly to a power monitor circuit that monitors whether a wireless transmitter or the like is outputting power above a specified level or is turned off. Regarding.
従来のかかる電力モニタ回路は、モニタすべき電力の一
部を分岐し、分岐出力を検波して得た検波電圧と基準電
圧とを比較して電力の有無をモニタしていた。Such a conventional power monitor circuit branches out a part of the power to be monitored and monitors the presence or absence of power by comparing the detected voltage obtained by detecting the branched output with a reference voltage.
ところが、従来の電力モニタ回路は、基準電圧が固定で
あるため、その基準電圧に対応するレベルより高いか低
いかの単一の判断しかできず、回路定数の変化や外部じ
ょう乱の影響を受けて動作が不確実になる欠点がある。However, in conventional power monitor circuits, the reference voltage is fixed, so only a single judgment can be made as to whether the level is higher or lower than the level corresponding to the reference voltage, and it is not affected by changes in circuit constants or external disturbances. The disadvantage is that the operation becomes uncertain.
本発明の目的は、動作の確実な電力モニタ回路を提供す
ることにある。An object of the present invention is to provide a power monitor circuit that operates reliably.
本発明の電力モニタ回路は、高周波電力の一部を分岐す
る結合器と、この結合器が分岐した出力を検波する検波
部と、この検波部の出力電圧と基準電圧とを比較す比較
部とを備える電力モニタ回路において、前記基準電圧を
変化せしめるスイッチを含んで構成される。The power monitor circuit of the present invention includes a coupler that branches part of high-frequency power, a detection section that detects the branched output of the coupler, and a comparison section that compares the output voltage of the detection section with a reference voltage. The power monitor circuit includes a switch that changes the reference voltage.
以下図面を参照して本発明について詳細に説明する。 The present invention will be described in detail below with reference to the drawings.
第１図は本発明の電力モニタ回路の一実施例を示すブロ
ック図である。FIG. 1 is a block diagram showing an embodiment of the power monitor circuit of the present invention.
１は無線送信機の電力増幅器であり、変調部（図示せず
）から入力する高周波信号を増幅し、送信信号として出
力する。２はカップラであり、送信信号の一部を分岐す
る。３はアンテナであり、カップラ２を通過した送信信
号を送出する。４は検波部であり、カップラ２の分岐出
力を検波して検波電圧ＶＤを出力する。５はＡＬＣ部で
あり、検波電圧ＶＤに基づき電力増幅器１の出力レベル
を規定値に制御する。６は比較部として動作する差動増
幅器であり、検波電圧Ｖ、と基準電圧ｖ３とを比較する
。７は監視制御部であり、差動増幅器６出力の正負から
電力増幅器１のオンオフをモニタし、また、電力増幅器
１０オンオフを制御する制御信号Ｃ８Ｉと切替信号Ｃ３
２とを出力する。Reference numeral 1 denotes a power amplifier of a wireless transmitter, which amplifies a high frequency signal input from a modulation section (not shown) and outputs it as a transmission signal. A coupler 2 branches a part of the transmission signal. 3 is an antenna, which sends out the transmission signal that has passed through the coupler 2. A detection section 4 detects the branched output of the coupler 2 and outputs a detected voltage VD. 5 is an ALC section, which controls the output level of the power amplifier 1 to a specified value based on the detected voltage VD. Reference numeral 6 denotes a differential amplifier that operates as a comparison section and compares the detected voltage V and the reference voltage v3. Reference numeral 7 denotes a supervisory control unit which monitors the on/off of the power amplifier 1 based on the positive and negative outputs of the differential amplifier 6, and also outputs a control signal C8I and a switching signal C3 for controlling the on/off of the power amplifier 10.
Outputs 2 and 2.
ＳＷは切替信号Ｃ３２に制御されて開閉するスイッチで
ある。SW is a switch that opens and closes under the control of the switching signal C32.
Ｒ１−Ｒ３は定電圧ｖ０゜から基準電圧Ｖ、をつくるた
めの抵抗である。スイッチＳＷが開いているとき、定電
圧■。。が抵抗Ｒ１と抵抗Ｒ２とで分圧されて基準電圧
Ｖ、となる。スイッチＳＷが閉じているときは、抵抗Ｒ
１，Ｒ３の並列回路と抵抗Ｒ２とで定電圧ｖ０゜が分圧
されて基準電圧ｖ３となる。したがって、切替信号Ｃ８
２によりスイッチＳＷを開閉することによって、基準電
圧ｖ３を２段階に変化できる。R1-R3 are resistors for creating a reference voltage V from a constant voltage v0°. When switch SW is open, constant voltage ■. . is divided by resistor R1 and resistor R2 to become reference voltage V. When switch SW is closed, resistance R
The constant voltage v0° is divided by the parallel circuit of 1 and R3 and the resistor R2 to become the reference voltage v3. Therefore, switching signal C8
By opening and closing the switch SW in accordance with 2, the reference voltage v3 can be changed in two stages.
制御信号Ｃ８ＩによりＡＬＣ部５を介して電力増幅器ｌ
を制御して送信オンにするとき、切替信号Ｃ３２により
スイッチＳＷを開き、基準電圧ｖ３を検波電圧ＶＤより
十分に下げ、また、送信オフのときはスイッチＳＷを閉
じて基準電圧■３を検波電圧ＶＤにより十分に上げる。The control signal C8I connects the power amplifier l via the ALC section 5.
When turning on transmission by controlling the switching signal C32, the switch SW is opened and the reference voltage v3 is sufficiently lowered than the detection voltage VD. When the transmission is off, the switch SW is closed and the reference voltage ■3 is set as the detection voltage. Increase it sufficiently by VD.
このようにして基準電圧Ｖ、と検波電圧ＶＤとの差を大
きくすることにより、電力増幅器１のオンオフを確実に
七二夕できる。By increasing the difference between the reference voltage V and the detected voltage VD in this manner, the power amplifier 1 can be turned on and off reliably on Tanabata.
電力増幅器１の出力レベルの規定値に対応する検波電圧
ＶＤよりどれだけ低く、あるいはどれだけ高く基準電圧
ｖ３を設定するかは、オンオフ判定をする出力レベルの
精度要求に対応して定める。How much lower or higher the reference voltage v3 should be set than the detected voltage VD corresponding to the specified value of the output level of the power amplifier 1 is determined in accordance with the accuracy requirement of the output level for on/off determination.
以上詳細に説明したように本発明の電力モニタ回路は、
スイッチによって基準電圧を変化できるので、モニタす
べき電力の有無、例えば、電力増幅器のオンの指令に対
して電力増幅器がオンになったかどうか、あるいはオフ
の指令に対してオフになったかどうかを確実にモニタで
きる効果がある。As explained in detail above, the power monitor circuit of the present invention has the following features:
The switch allows the reference voltage to be varied, ensuring that there is no power to monitor, e.g., whether the power amplifier is turned on in response to a command to turn the power amplifier on, or whether it is turned off in response to a command to turn it off. There are effects that can be monitored.
第１図は、本発明の電力モニタ回路の一実施例を示すブ
ロック図である。
１・・・・・・出力増幅器、２・・・・・・カップラ、
３・・・・・・アンテナ、４・・・・・・検波部、５・
・・・・・ＡＬＣ部、６・・・・・・差動増幅器、７・
・・・・・監視制御部、Ｒ１−Ｒ３・・・・・・抵抗、
ＳＷ・・・・・・スイッチ。
代理人 弁理士 内 原 音
Ｃ３７”、 やト制御イ１シでテ
ＶＤ ： ネタ１叉１慣シ日巳Ｃ５２−＋刀習信号
Ｖｓ：基準電圧Ｖｃｃ ：定電圧
箭１図FIG. 1 is a block diagram showing an embodiment of the power monitor circuit of the present invention. 1...Output amplifier, 2...Coupler,
3...Antenna, 4...Detection section, 5.
...ALC section, 6...Differential amplifier, 7.
...Monitoring control unit, R1-R3...Resistance,
SW...Switch. Agent Patent Attorney Uchihara Oto C37”
VD: Neta 1 or 1 practice Hijimi C52- + sword training signal
Vs: Reference voltage Vcc: Constant voltage diagram 1
Claims (1)
岐した出力を検波する検波部と、この検波部の出力電圧
と基準電圧とを比較す比較部とを備える電力モニタ回路
において、前記基準電圧を変化せしめるスイッチを含む
ことを特徴とする電力モニタ回路。The power monitor circuit includes a coupler that branches part of the high-frequency power, a detection unit that detects the branched output of the coupler, and a comparison unit that compares the output voltage of the detection unit and a reference voltage. A power monitor circuit characterized by including a switch that changes a reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63004136A JPH01180139A (en) | 1988-01-11 | 1988-01-11 | Power monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63004136A JPH01180139A (en) | 1988-01-11 | 1988-01-11 | Power monitoring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01180139A true JPH01180139A (en) | 1989-07-18 |
Family
ID=11576364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63004136A Pending JPH01180139A (en) | 1988-01-11 | 1988-01-11 | Power monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01180139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0548356A (en) * | 1991-08-09 | 1993-02-26 | Matsushita Electric Ind Co Ltd | High frequency power amplifier |
-
1988
- 1988-01-11 JP JP63004136A patent/JPH01180139A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0548356A (en) * | 1991-08-09 | 1993-02-26 | Matsushita Electric Ind Co Ltd | High frequency power amplifier |
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