JPH01293016A - Circuit for controlling output of transmitter - Google Patents
Circuit for controlling output of transmitterInfo
- Publication number
- JPH01293016A JPH01293016A JP12358488A JP12358488A JPH01293016A JP H01293016 A JPH01293016 A JP H01293016A JP 12358488 A JP12358488 A JP 12358488A JP 12358488 A JP12358488 A JP 12358488A JP H01293016 A JPH01293016 A JP H01293016A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- frequency
- output
- amplifier
- control
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 230000003321 amplification Effects 0.000 claims abstract description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 2
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 abstract 1
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 9
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Transmitters (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は送信器出力制御回路に関し、特罠広帯域送信機
の出力安定化制御回路に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transmitter output control circuit, and more particularly to an output stabilization control circuit for a special broadband transmitter.
従来の送信機出力制御回路の一例を第３図に示す。シン
セサイザ１は制御電圧ｖＡＰｃヲ入カとする電圧制御発
振器（以下、 ＶＣＯと称す）２を有する。An example of a conventional transmitter output control circuit is shown in FIG. The synthesizer 1 has a voltage controlled oscillator (hereinafter referred to as VCO) 2 which inputs a control voltage vAPc.
ＶＣＯ２の発振信号は増幅器３で増幅され、さらに高周
波増幅部４で増幅された後マイクロストリップライン７
を通り、アイソレータ又は送信フィルタ等へ入力される
。ここで、高周波増幅部４は高周波増幅器５．６の２段
構成とする。The oscillation signal of the VCO 2 is amplified by the amplifier 3, and further amplified by the high frequency amplification section 4, and then sent to the microstrip line 7.
and is input to an isolator or transmission filter. Here, the high frequency amplification section 4 has a two-stage configuration of high frequency amplifiers 5 and 6.
送信出力信号検出器８により検出された検波電圧ｖＤＩ
ｃＴと予め定められた基準電圧”１８Ｆとが差動増幅器
１３にて比較され、比較結果である差動増幅出力電圧ｖ
Ｃｃ、が１段目の高周波増幅器５に印加される。この印
加電圧を制御することにょシ送信機の高周波出力を制御
している。Detection voltage vDI detected by transmission output signal detector 8
cT and a predetermined reference voltage "18F" are compared in the differential amplifier 13, and the comparison result is the differential amplified output voltage v.
Cc is applied to the first stage high frequency amplifier 5. By controlling this applied voltage, the high frequency output of the transmitter is controlled.
二連した従来の送信機出力制御回路では、送信出力信号
検出器８は通常、マイクロストリップライン１０等で送
信出力を結合させ、結合信号を整流検波器９等で電圧変
換している。（ス） ＩＪツブラインの他にコンデンサ
結合も一般的である）しかしながら、送信機が広帯域に
なってくると上記結合の結合度に周波数特性が生じ、検
出電圧ＶＤＥＴも第５図のごとく周波数に対し一定値が
保てなくなる。この周波数に対する一定化が保てなくな
ると、第７図のごとく送信出力Ｐ。ＩＪＴにも周波数特
性が生じ、帯域内での一定化が損われるという欠点があ
った。In a conventional dual transmitter output control circuit, the transmission output signal detector 8 usually combines the transmission outputs using a microstrip line 10 or the like, and converts the combined signal into a voltage using a rectifier detector 9 or the like. (S) In addition to IJ tube lines, capacitor coupling is also common.) However, as the transmitter becomes broadband, the degree of coupling described above has a frequency characteristic, and the detection voltage VDET also varies with frequency as shown in Figure 5. A constant value cannot be maintained. If this frequency cannot be kept constant, the transmission output P will decrease as shown in FIG. IJT also has the disadvantage that frequency characteristics occur and stability within the band is impaired.
本発明による送信出力制御回路は、従来の構成に加えて
、送信出力を制御する予め定められた基準電圧を入力と
し、 ＶＣＯの制御電圧に応じて増幅度が変化する制御
増幅器と、該制御増幅器の出力電圧と送信出力を検出す
る出力検出器の検出電圧とを比較する差動増幅器とを有
する。In addition to the conventional configuration, the transmission output control circuit according to the present invention includes a control amplifier whose input is a predetermined reference voltage for controlling the transmission output and whose amplification degree changes according to the control voltage of the VCO, and the control amplifier. and a differential amplifier that compares the output voltage of the transmitter with the detection voltage of the output detector that detects the transmission output.
本発明の送信出力制御回路は、 ＶＣＯの制御電圧にて
従来、差動増幅器に加えられていた基準電圧に周波数補
正を施すことによシ、その出力である制御・電圧を送信
出力信号検出器の検波電圧の周波数特性に合せて変化さ
せ、送信出力の周波数特性上一定化するものである。The transmission output control circuit of the present invention applies frequency correction to the reference voltage conventionally applied to the differential amplifier using the control voltage of the VCO, and uses the control voltage that is the output thereof to the transmission output signal detector. The output voltage is changed according to the frequency characteristics of the detected voltage, and is kept constant based on the frequency characteristics of the transmitted output.
次に本発明の実施例について図面全参照して説明する。 Next, embodiments of the present invention will be described with reference to all the drawings.
第１図は本発明の一実施例の回路図である。第２図は第
１図の制御増幅器１２の一実施例の回路図である。FIG. 1 is a circuit diagram of an embodiment of the present invention. FIG. 2 is a circuit diagram of one embodiment of the control amplifier 12 of FIG.
第１図の実施例の動作例を説明する。第４図〜第７図の
周波数九において３（Ｗ）の送信出力があったとする。An example of the operation of the embodiment shown in FIG. 1 will be explained. Assume that there is a transmission output of 3 (W) at frequency 9 in FIGS. 4 to 7.
このとき第１図のマイクロストリップライン７→１０に
て結合された電力が整流検波器９にて検出され、出力電
圧ＶＤＥＴは送信出力３（Ｗ）に相当する電圧が発生す
る。一方、 ＶＣＯ２の制御電圧ｖＡＰｏと基準電圧ｖ
ＲＥＦが入力される制御増幅器１２のダインが０であっ
たとすると、制御増幅器１２の出力電圧ｖＣＯＮＴは”
Ｃ０ＮＴ＝ｖＲＩＣＦとなる。予め基準電圧ｖＲＥＦヲ
ｖ□Ｆ＝”ＤｌｔＴに定めておけば差動増幅器１３の誤
差電圧は０となシ、差動増幅器出力は一定値となり、こ
の出力電圧ｖｃｏ、が高周波増幅部４内の高周波増幅器
５に印加され、 ３ （Ｗ）の送信出力が得られる。At this time, the power coupled through the microstrip line 7→10 in FIG. 1 is detected by the rectifier detector 9, and a voltage corresponding to the transmission output 3 (W) is generated as the output voltage VDET. On the other hand, the control voltage vAPo of VCO2 and the reference voltage v
If the dyne of the control amplifier 12 to which REF is input is 0, the output voltage vCONT of the control amplifier 12 is "
C0NT=vRICF. If the reference voltage vREF is set in advance to v□F = "DltT, the error voltage of the differential amplifier 13 will not be 0, the differential amplifier output will be a constant value, and this output voltage vco, The signal is applied to the high frequency amplifier 5, and a transmission output of 3 (W) is obtained.
しかしながら、ストリップライン７→１０の結合度も広
帯域送信機になってくると、帯域内での一定性を保つに
は回路的には困難になってくる。However, when the degree of coupling between the strip lines 7 and 10 becomes a broadband transmitter, it becomes difficult to maintain consistency within the band from a circuit perspective.
広帯域でのストリップライン７→１０での結合度の周波
数特性に起因する送信出力信号検出器の出力電圧ｖＤＦ
、Ｔの周波数特性の一例は第５図に示されている。周波
数がｆＬの如＜＝ｆｗより低くなると出力電圧ＶＤＥＴ
は低い電圧となる。すると、高周波増幅器５にかかる電
圧ｖｃｃ、は３（Ｗ）時の電圧よりも高くなシ、送信出
力は上ってしまう。そして、出力電圧ＶＤＩ、Ｔが周波
数九の３（Ｗ）時の出力電圧”ＤＩ？（＝ＶＲＥＦ）と
同電圧となったところで一定となる。The output voltage vDF of the transmitting output signal detector due to the frequency characteristics of the coupling degree in the strip line 7 → 10 in a wide band
, T is shown in FIG. When the frequency is lower than fL <= fw, the output voltage VDET
becomes a low voltage. Then, the voltage vcc applied to the high frequency amplifier 5 is higher than the voltage at 3 (W), and the transmission output increases. Then, the output voltage VDI, T becomes constant when it becomes the same voltage as the output voltage "DI? (=VREF)" at frequency 9, 3 (W).
すなわち、送信出力は第７図の如＜ｆＬにおいては３（
Ｗ）時の九よりも高い出力にて一定となる。周波数九の
ときはこの逆とな！０ 、３ （Ｗ）時の九よりも低い
値で一定となる。That is, the transmission output is 3(
W) It becomes constant at an output higher than 9 at the time. When the frequency is 9, the opposite is true! It becomes constant at a value lower than 9 at the time of 0 and 3 (W).
しかし、制御増幅器１２は出力電圧ｖＤＩ、ＴのｆＬ。However, the control amplifier 12 has an output voltage vDI, fL of T.
九１ｆｌ（の周波数特性に応じてＶＣＯ２の制御電圧ｖ
ＡＰ、で補正した増幅度を有する。即ち、第４図の制御
電圧ｖＡＰｏの周波数特性に応じて制御増幅器１２の増
幅度が制御される。ここでの制御を、第６図の実線の如
く周波数に対して、第５図の出力電圧ＶＤＥＴの周波数
特性と同じになるように第２図の増幅器２１のゲインを
設定する。すると、制御増幅器１２の出力電圧ｖｃｏＮ
Ｔ周波数特性は出力電圧ＶＤＥＴの周波数特性と同一と
なる。例えば１周波数ｆＬのとき出力電圧ＶＤＥＴが下
っても同様に出力電圧ｖＣＯＮＴも下がる為、高周波増
幅器５の出力電圧ｖｃｃ１は周波数九の時の電圧と同じ
とな）、第７図の実線の如く１周波数ｆＬの時の送信出
力は周波数九の時と同じ送信出力が得られる。周波数が
九の場合は、出力電圧ｖＤＫＴは周波数九時に比べて上
がるが、出力電圧ｖｃＯＮＴも同じだけ上がるので送信
出力は一定に保たれる。The control voltage v of VCO2 according to the frequency characteristics of
It has an amplification degree corrected by AP. That is, the amplification degree of the control amplifier 12 is controlled according to the frequency characteristics of the control voltage vAPo shown in FIG. In this control, the gain of the amplifier 21 in FIG. 2 is set so that the frequency characteristic of the output voltage VDET in FIG. 5 is the same as that of the output voltage VDET in FIG. 5 with respect to the frequency as shown by the solid line in FIG. Then, the output voltage vcoN of the control amplifier 12
The T frequency characteristic is the same as the frequency characteristic of the output voltage VDET. For example, when the output voltage VDET decreases when the frequency is 1, the output voltage vCONT also decreases, so the output voltage vcc1 of the high frequency amplifier 5 is the same as the voltage when the frequency is 9), as shown by the solid line in FIG. The transmission output at frequency fL is the same as that at frequency 9. When the frequency is 9, the output voltage vDKT increases compared to when the frequency is 9 o'clock, but the output voltage vcONT also increases by the same amount, so the transmission output is kept constant.
以下余日
〔発明の効果〕
以上説明したように本発明は、 ＶＣＯの制御電圧にて
、送信機の送信出力を制御する基準電圧を周波数補正す
ることにより、広帯域送信機においても広帯域内で安定
送信出力が得られる効果がある。[Effects of the Invention] As explained above, the present invention achieves stability within a wide band even in a wide band transmitter by frequency correcting the reference voltage that controls the transmission output of the transmitter using the control voltage of the VCO. This has the effect of increasing transmission output.
これは小型化及び、広帯域化が進む移動通信機器の分野
においては大きな利点となる。This is a great advantage in the field of mobile communication equipment, where miniaturization and broadbandization are progressing.
第１図は本発明の一実施例の回路図、第２図は第１図の
制御増幅器１２の一実施例の回路図、第３図は従来の送
信機出力制御回路の一実施例の回路図、第４図は電圧制
御発振器の制御電圧ｖＡＰｃ対周波数の特性図、第５図
は検波出力電圧ＶＤＥＴ対周波数の特性図、第６図は基
準電圧及び周波数補正後の基準電圧対周波数特性図、第
７図は送信出力Ｐ。ＵＴ対周波数の特性図。
１：シンセサイザ、 ２ ： ＶＣＯ（電圧制御発振器
）。
３．４，５．６：増幅器、７．１０：マイクロストリッ
グライン、８：送信出力信号検出器、９：整流検波器、
１２：制御増幅器、１３：差動増幅器。
２１．２２：演算増幅器。
ヒ井秦
第４図 第５図
第６図 第７図FIG. 1 is a circuit diagram of an embodiment of the present invention, FIG. 2 is a circuit diagram of an embodiment of the control amplifier 12 shown in FIG. 1, and FIG. 3 is a circuit diagram of an embodiment of a conventional transmitter output control circuit. Figure 4 is a characteristic diagram of control voltage vAPc vs. frequency of the voltage controlled oscillator, Figure 5 is a characteristic diagram of detected output voltage VDET vs. frequency, and Figure 6 is a diagram of reference voltage vs. frequency characteristic after reference voltage and frequency correction. , FIG. 7 shows the transmission output P. Characteristic diagram of UT versus frequency. 1: Synthesizer, 2: VCO (voltage controlled oscillator). 3.4, 5.6: Amplifier, 7.10: Microstrig line, 8: Transmission output signal detector, 9: Rectifier detector,
12: Control amplifier, 13: Differential amplifier. 21.22: Operational amplifier. Hii Qin Figure 4 Figure 5 Figure 6 Figure 7
Claims (1)
し、高周波増幅器の電源電圧を制御することにより送信
機の送信出力を制御する送信出力制御回路において、送
信出力を制御する予め定められた基準電圧を入力とし、
前記電圧制御発振器の制御電圧に応じて増幅度が変化す
る制御増幅器と、該制御増幅器の出力電圧と送信出力を
検出する出力検出器の検出電圧とを比較する差動増幅器
とを有し、該差動増幅器出力を前記高周波増幅器の電源
電圧とすることにより電圧制御発振器の制御電圧にて予
め定められた基準電圧に周波数補正をかけることを特徴
とする送信機出力制御回路。1. In a transmission output control circuit that amplifies the oscillation output of a voltage controlled oscillator with a high-frequency amplifier and controls the transmission output of a transmitter by controlling the power supply voltage of the high-frequency amplifier, a predetermined standard for controlling the transmission output Take voltage as input,
It has a control amplifier whose amplification degree changes according to the control voltage of the voltage controlled oscillator, and a differential amplifier which compares the output voltage of the control amplifier and the detection voltage of an output detector that detects the transmission output. A transmitter output control circuit characterized in that frequency correction is applied to a predetermined reference voltage using a control voltage of a voltage controlled oscillator by using a differential amplifier output as a power supply voltage of the high frequency amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12358488A JPH01293016A (en) | 1988-05-20 | 1988-05-20 | Circuit for controlling output of transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12358488A JPH01293016A (en) | 1988-05-20 | 1988-05-20 | Circuit for controlling output of transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01293016A true JPH01293016A (en) | 1989-11-27 |
Family
ID=14864208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12358488A Pending JPH01293016A (en) | 1988-05-20 | 1988-05-20 | Circuit for controlling output of transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01293016A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03171913A (en) * | 1989-11-30 | 1991-07-25 | Nec Corp | Power amplifying circuit |
| JPH042135U (en) * | 1990-04-18 | 1992-01-09 | ||
| US5396652A (en) * | 1991-08-21 | 1995-03-07 | Matsushita Electric Industrial Co., Ltd. | Transmitting power control unit having a constant output level throughout a predetermined frequency band |
-
1988
- 1988-05-20 JP JP12358488A patent/JPH01293016A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03171913A (en) * | 1989-11-30 | 1991-07-25 | Nec Corp | Power amplifying circuit |
| JPH042135U (en) * | 1990-04-18 | 1992-01-09 | ||
| US5396652A (en) * | 1991-08-21 | 1995-03-07 | Matsushita Electric Industrial Co., Ltd. | Transmitting power control unit having a constant output level throughout a predetermined frequency band |
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