JP2531368B2 - Sweep oscillator - Google Patents
Sweep oscillatorInfo
- Publication number
- JP2531368B2 JP2531368B2 JP5252272A JP25227293A JP2531368B2 JP 2531368 B2 JP2531368 B2 JP 2531368B2 JP 5252272 A JP5252272 A JP 5252272A JP 25227293 A JP25227293 A JP 25227293A JP 2531368 B2 JP2531368 B2 JP 2531368B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sweep
- frequency signal
- frequency
- swept
- 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.)
- Expired - Fee Related
Links
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- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、無線通信装置の増幅部
などの周波数調整及び周波数補正を行う際に掃引（スイ
ープ）周波数信号を供給する掃引発振装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sweep oscillating device for supplying a sweep frequency signal when performing frequency adjustment and frequency correction on an amplification section of a wireless communication device.
【０００２】[0002]
【従来の技術】従来、無線通信装置の増幅部などにおけ
周波数調整及び周波数補正を行う際に例えば特開昭５８
ー８７９２１号公報に示される掃引発振装置が用いられ
ている。2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. Sho 58-58 has been used for frequency adjustment and frequency correction in an amplifying section of a wireless communication device.
The sweep oscillation device disclosed in Japanese Patent Publication No. 87921 is used.
【０００３】図２は従来の掃引発振装置を示すブロック
図である。図２において、この掃引発振装置は掃引高周
波（ＲＦ）回路Ａと、測定器接続部Ｂとを有している。
掃引高周波回路ＡではＲＦ掃引発振器１ａから出力され
たＲＦ信号を分波器１ｂによって分波する。この分波し
たＲＦ信号を測定器接続部Ｂとシンセサイズド掃引回路
１ｃに出力する。FIG. 2 is a block diagram showing a conventional sweep oscillator. In FIG. 2, this swept oscillator has a swept radio frequency (RF) circuit A and a measuring instrument connection B.
In the sweep high-frequency circuit A, the RF signal output from the RF sweep oscillator 1a is demultiplexed by the demultiplexer 1b. The demultiplexed RF signal is output to the measuring instrument connecting section B and the synthesized sweep circuit 1c.
【０００４】シンセサイズド掃引回路１ｃに入力された
ＲＦ信号は、内部で発生する基準信号と周波数が比較さ
れ、この比較結果である誤差周波数を示す信号がＲＦ掃
引発振器１ａにフィードバックされる。このＲＦ掃引発
振器１ａの発振信号を調整する閉ループ制御によって、
測定器接続部Ｂに出力するＲＦ信号の周波数を一定化す
る制御が行われる。The RF signal input to the synthesized sweep circuit 1c is compared in frequency with a reference signal generated internally, and a signal indicating an error frequency as a result of this comparison is fed back to the RF sweep oscillator 1a. By the closed loop control for adjusting the oscillation signal of the RF sweep oscillator 1a,
Control is performed to make the frequency of the RF signal output to the measuring instrument connecting section B constant.
【０００５】また、測定器接続部Ｂでは、掃引高周波回
路Ａから周波数を安定化したＲＦ信号をピンダイオード
減衰器３及び方向性結合器４を通じて減衰器７に出力す
る。減衰器７は所定レベルに減衰した出力掃引発振信号
Ｓｏを送出する。この際、方向性結合器４で分岐したＲ
Ｆ信号を検波器５でエンペロープ検波して、ＲＦ信号の
レベルを示す検出信号を出力する。この検出信号をＡＬ
Ｃ（自動レベル調整）回路６を通じてピンダイオード減
衰器３に入力して、減衰量を調整している。すなわち閉
ループ制御によって、減衰器７からの出力掃引発振信号
Ｓｏを所定の一定レベルに調整して測定対象の無線通信
装置に供給している。In the measuring device connecting section B, the frequency-stabilized RF signal from the swept high frequency circuit A is output to the attenuator 7 through the pin diode attenuator 3 and the directional coupler 4. The attenuator 7 outputs the output sweep oscillation signal So attenuated to a predetermined level. At this time, R branched by the directional coupler 4
The F signal is subjected to envelope detection by the detector 5 and a detection signal indicating the level of the RF signal is output. This detection signal is AL
The attenuation amount is adjusted by inputting it to the pin diode attenuator 3 through the C (automatic level adjustment) circuit 6. That is, the output sweep oscillation signal So from the attenuator 7 is adjusted to a predetermined constant level by the closed loop control and supplied to the wireless communication device to be measured.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、特開昭
５８−８７９２１号の例を含む上述した従来の掃引発振
装置では、掃引高周波回路Ａが所定の掃引周波数を生成
して測定器接続部Ｂに送出する際の周波数調整を行う間
に、掃引周波数が瞬断してしまい、測定器接続部Ｂに接
続される無線通信装置の増幅部などの周波数調整及び周
波数補正が中断する。また、測定器接続部Ｂでの出力掃
引発振信号Ｓｏを所定の一定レベルに調整する閉ループ
制御が中断し、この閉ループ制御で出力掃引発振信号Ｓ
ｏを所定の一定レベルに収束する間に出力掃引発振信号
Ｓｏのレベルも変動してしまうという問題があった。However, in the above-mentioned conventional sweep oscillator including the example of Japanese Patent Laid-Open No. 58-87921, the swept high frequency circuit A generates a predetermined sweep frequency and the measuring device connection portion B is connected to the swept high frequency circuit. During the frequency adjustment at the time of sending, the sweep frequency is momentarily interrupted, and the frequency adjustment and the frequency correction of the amplification unit of the wireless communication device connected to the measuring instrument connection unit B are interrupted. Further, the closed-loop control for adjusting the output sweep oscillation signal So at the measuring instrument connection section B to a predetermined constant level is interrupted, and the output-sweep oscillation signal S is adjusted by this closed-loop control.
There has been a problem that the level of the output sweep oscillation signal So also fluctuates while o is converged to a predetermined constant level.
【０００７】本発明は、上述した事情にかんがみてなさ
れたものであり、周波数調整及び周波数補正を行う際に
供給する掃引周波数信号の瞬断を阻止して、測定の信頼
性が向上し、かつ、測定を迅速に出来る掃引発振装置の
提供を目的とする。The present invention has been made in view of the above-mentioned circumstances, and prevents instantaneous interruption of a sweep frequency signal supplied when performing frequency adjustment and frequency correction, thereby improving measurement reliability and The purpose is to provide a swept oscillator capable of quick measurement.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明の掃引発振装置は、閉ループ制御で周波数を
補正した第１の掃引高周波信号を送出する掃引高周波回
路と、第１の掃引高周波信号の送出経路を導通又は非導
通に切り替え、かつ、内部で生成した第２の掃引高周波
信号の送出経路を導通又は非導通に切り替えて第１又は
第２の掃引高周波信号を出力する瞬断停止制御部と、掃
引高周波回路からの第１の掃引高周波信号の送出が停止
した際に第１の掃引高周波信号の送出路を非導通に設定
し、かつ、瞬断停止制御部からの第２の掃引高周波信号
の経路を導通に設定して第２の掃引高周波信号を瞬断停
止制御部から出力する制御を行う制御手段とを備える構
成としてある。In order to achieve the above object, a sweep oscillator according to the present invention comprises a sweep high frequency circuit for sending a first sweep high frequency signal whose frequency is corrected by closed loop control, and a first sweep high frequency circuit. Instantaneous interruption for switching the transmission path of the high frequency signal to conductive or non-conductive, and switching the transmission path of the internally generated second sweep high frequency signal to conductive or non-conductive to output the first or second swept high frequency signal The stop control unit and the transmission path of the first sweep high-frequency signal are set to non-conduction when the transmission of the first sweep high-frequency signal from the sweep high-frequency circuit is stopped, and the second control signal from the instantaneous interruption stop control unit is set. The control means for controlling the path of the sweeping high frequency signal to be set to be conductive and outputting the second sweeping high frequency signal from the instantaneous interruption control section.
【０００９】この構成にあって、掃引高周波回路は、高
周波信号を発振する発振器と、この発振器からの高周波
信号を分波し、かつ、第１の掃引高周波信号を出力する
分波器と、この分波器で分波した高周波信号を所定の掃
引周波数に生成するためのシンセサイズド掃引回路とを
備える構成としてある。In this configuration, the swept high-frequency circuit includes an oscillator that oscillates a high-frequency signal, a demultiplexer that demultiplexes the high-frequency signal from this oscillator, and outputs a first swept high-frequency signal. A synthesized sweep circuit for generating a high frequency signal demultiplexed by the demultiplexer at a predetermined sweep frequency is provided.
【００１０】また、瞬断停止制御部は、掃引高周波回路
からの第１の掃引高周波信号を制御信号に基づいて減衰
させる第１のピンダイオード減衰器と、この第１のピン
ダイオード減衰器からの第１の掃引高周波信号と第２の
掃引高周波信号を通過させる合成器と、第２の掃引高周
波信を制御信号で減衰させる第２のピンダイオード減衰
器と、この第２のピンダイオード減衰器に第２の掃引高
周波信号を送出する掃引高周波発振器と、周波数データ
信号をアナログ化して出力するＤ／Ａ変換器と、制御信
号に基づいて予め格納した周波数データを送出する周波
数データ格納器とを備える構成としてある。Further, the instantaneous interruption stop control section includes a first pin diode attenuator for attenuating the first swept high frequency signal from the swept high frequency circuit based on the control signal, and the first pin diode attenuator. A combiner for passing the first swept high frequency signal and the second swept high frequency signal, a second pin diode attenuator for attenuating the second swept high frequency signal with a control signal, and a second pin diode attenuator A swept high frequency oscillator for sending a second swept high frequency signal, a D / A converter for analogizing and outputting a frequency data signal, and a frequency data storage device for sending frequency data stored in advance based on a control signal are provided. It is as a configuration.
【００１１】これらの構成に加え、瞬断停止制御部から
の第１又は第２の掃引高周波信号を所定の一定レベルに
設定する測定器接続部を備える構成としてある。In addition to these configurations, a measuring instrument connecting section for setting the first or second swept high frequency signal from the instantaneous interruption stop control section to a predetermined constant level is provided.
【００１２】また、測定器接続部は、瞬断停止制御部か
らの第１又は第２の掃引高周波信号を減衰させるピンダ
イオード減衰器と、このピンダイオード減衰器からの第
１又は第２の掃引高周波信号を通過かつ分岐する方向性
結合器と、この方向性結合器で分岐した第１又は第２の
掃引高周波信号を検波し、第１又は第２の掃引高周波信
号のレベルを示す検出信号を出力する検波器と、この検
波器からの検出信号に基づいて方向性結合器から出力す
る第１又は第２の掃引高周波信号を一定のレベルに設定
する制御信号をピンダイオード減衰器に送出して、閉ル
ープ制御を行うためのＡＬＣ回路とを備える構成として
ある。Further, the measuring instrument connecting section includes a pin diode attenuator for attenuating the first or second sweep high frequency signal from the instantaneous interruption control section and a first or second sweep from the pin diode attenuator. A directional coupler that passes and branches a high-frequency signal and a first or second swept high-frequency signal branched by this directional coupler, and detects a detection signal indicating the level of the first or second swept high-frequency signal. An output detector and a control signal for setting the first or second swept high frequency signal output from the directional coupler to a constant level based on the detection signal from the detector are sent to the pin diode attenuator. , And an ALC circuit for performing closed loop control.
【００１３】[0013]
【作用】上記構成からなる、本発明の掃引発振装置は掃
引高周波回路からの第１の掃引高周波信号の送出が停止
した際に、第１の掃引高周波信号の送出路を非導通に設
定し、かつ、第２の掃引高周波信号の経路を導通に設定
して、第１の掃引高周波信号に継続して第２の掃引高周
波信号を出力する制御を行う。さらに瞬断停止制御部か
らの第１又は第２の掃引高周波信号を所定の一定レベル
に設定する制御が行われる。したがって、周波数調整及
び周波数補正を行う際に供給する掃引周波数信号の瞬断
が阻止される。さらに、第１又は第２の掃引高周波信号
を所定の一定レベルに設定する制御も停止せずに、測定
が迅速に行われる。According to the sweep oscillator of the present invention having the above-mentioned configuration, when the sending of the first swept high frequency signal from the swept high frequency circuit is stopped, the sending path of the first swept high frequency signal is set to non-conductive, At the same time, the path of the second swept high-frequency signal is set to be conductive, and the control for continuously outputting the second swept high-frequency signal to the first swept high-frequency signal is performed. Further, control is performed to set the first or second sweep high frequency signal from the instantaneous interruption stop control unit to a predetermined constant level. Therefore, the instantaneous interruption of the sweep frequency signal supplied when performing frequency adjustment and frequency correction is prevented. Furthermore, the measurement is performed quickly without stopping the control for setting the first or second swept high-frequency signal to a predetermined constant level.
【００１４】[0014]
【実施例】次に、本発明の掃引発振装置の実施例につい
て図面を参照しながら説明する。図１は本発明の掃引発
振装置における実施例の構成を示すブロック図である。
図１において、この掃引発振装置は掃引高周波（ＲＦ）
回路Ａと、瞬断停止制御部Ｂと、測定器接続部Ｃとを有
している。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the sweep oscillator of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the swept oscillator of the present invention.
In FIG. 1, this sweep oscillator has a swept high frequency (RF)
It has a circuit A, a momentary interruption stop control section B, and a measuring instrument connection section C.
【００１５】掃引高周波（ＲＦ）回路Ａは、ＲＦ信号を
発振するＲＦ掃引発振器１０ａと、ＲＦ掃引発振器１０
ａからのＲＦ信号を分波する分波器１０ｂと、分波器１
０ｂで分波したＲＦ信号の周波数を所定の掃引周波数に
設定するためのシンセサイズド掃引回路１０ｃとを有し
ている。The sweep radio frequency (RF) circuit A includes an RF sweep oscillator 10a for oscillating an RF signal and an RF sweep oscillator 10
A demultiplexer 10b for demultiplexing the RF signal from a and the demultiplexer 1
It has a synthesized sweep circuit 10c for setting the frequency of the RF signal branched at 0b to a predetermined sweep frequency.
【００１６】瞬断停止制御部Ｂは、分波器１０ｂから出
力される掃引（スイープ）したＲＦ信号Ｓａを制御信号
Ｃａで減衰させるピンダイオード減衰器１２と、このピ
ンダイオード減衰器１２からのＲＦ信号（Ｓａ）と、他
方の掃引（スイープ）したＲＦ信号Ｓｂとを通過させる
合成器１３とを有している。また、他方のＲＦ信号Ｓｂ
を制御信号Ｃｂで減衰させるピンダイオード減衰器１４
と、このピンダイオード減衰器１４に分波器１０ｂから
のＲＦ信号Ｓａと同一の周波数及びレベルの信号（Ｓ
ｂ）を送出するＲＦ発振器１５と、周波数データ信号を
アナログ化して出力するＤ／Ａ変換器１６と、制御信号
Ｃｃで予め格納した周波数データを送出する周波数デー
タ格納器１７とを有している。The instantaneous interruption stop control unit B attenuates the swept RF signal Sa output from the duplexer 10b with the control signal Ca, and the RF from the pin diode attenuator 12. It has a combiner 13 for passing the signal (Sa) and the other swept RF signal Sb. Also, the other RF signal Sb
Pin attenuator 14 for attenuating the control signal Cb
And a signal (S) having the same frequency and level as the RF signal Sa from the demultiplexer 10b is input to the pin diode attenuator 14.
It has an RF oscillator 15 for sending out b), a D / A converter 16 for analogizing and outputting a frequency data signal, and a frequency data storage 17 for sending out frequency data stored in advance as a control signal Cc. .
【００１７】測定器接続部Ｃは、合成器１３からのＲＦ
信号（Ｓａ／Ｓｂ）を減衰させるピンダイオード減衰器
１８と、ピンダイオード減衰器１８からのＲＦ信号（Ｓ
ａ／Ｓｂ）を通過かつ分岐する方向性結合器１９と、方
向性結合器１９で分岐したＲＦ信号（Ｓａ／Ｓｂ）をエ
ンベロープ検波し、このＲＦ信号（Ｓａ／Ｓｂ）のレベ
ルを示す検出信号を出力する検波器２０とを有してい
る。The measuring device connecting portion C is connected to the RF from the combiner 13.
The pin diode attenuator 18 for attenuating the signal (Sa / Sb) and the RF signal (S
a / Sb) and a directional coupler 19 and a detection signal indicating the level of the RF signal (Sa / Sb) by envelope detection of the RF signal (Sa / Sb) branched by the directional coupler 19. And a detector 20 that outputs
【００１８】また、測定器接続部Ｃは検波器２０からの
検出信号で、方向性結合器１９からのＲＦ信号（Ｓａ／
Ｓｂ）を所定の一定レベルに設定するための制御信号を
ピンダイオード減衰器１８に送出して、閉ループ制御を
行うＡＬＣ回路２１と、方向性結合器１９を通過したＲ
Ｆ信号（Ｓａ／Ｓｂ）を所定レベルに減衰させた出力掃
引発振信号Ｓｏを測定対象の無線通信装置に供給する減
衰器２２とを有している。Further, the measuring device connecting portion C is a detection signal from the detector 20 and an RF signal (Sa / Sa from the directional coupler 19).
A control signal for setting Sb) to a predetermined constant level is sent to the pin diode attenuator 18, and an ALC circuit 21 for performing closed loop control and R passed through the directional coupler 19.
The attenuator 22 supplies the output sweep oscillation signal So obtained by attenuating the F signal (Sa / Sb) to a predetermined level to the wireless communication device to be measured.
【００１９】さらに、この掃引発振装置にはピンダイオ
ード減衰器１２に制御信号Ｃａを送出し、かつ、ピンダ
イオード減衰器１４に制御信号Ｃｂを送出するととも
に、周波数データ格納器１７に制御信号Ｃｃを送出して
出力掃引発振信号Ｓｏの瞬断を阻止する制御を行う制御
器２６を有している。Further, to this sweep oscillator, a control signal Ca is sent to the pin diode attenuator 12, a control signal Cb is sent to the pin diode attenuator 14, and a control signal Cc is sent to the frequency data storage 17. It has a controller 26 that sends out and controls the output sweep oscillation signal So to prevent the instantaneous interruption.
【００２０】次に、この構成における動作について説明
する。当該装置の動作開始時などで掃引高周波回路Ａが
閉ループ制御で周波数補正を行っている場合、ＲＦ信号
Ｓａの送出が停止する。このＲＦ信号Ｓａの送出停止中
は瞬断停止制御部ＢからのＲＦ信号Ｓｂを測定器接続部
Ｃに送出して継続した出力掃引発振信号Ｓｏを送出す
る。すなわち、出力掃引発振信号Ｓｏの瞬断を阻止す
る。Next, the operation of this configuration will be described. When the swept high-frequency circuit A is performing the frequency correction by the closed loop control at the time of starting the operation of the device, the transmission of the RF signal Sa is stopped. While the transmission of the RF signal Sa is stopped, the RF signal Sb from the instantaneous interruption stop control unit B is transmitted to the measuring instrument connection unit C and the continuous output sweep oscillation signal So is transmitted. That is, the instantaneous interruption of the output sweep oscillation signal So is prevented.
【００２１】この動作は、まず掃引高周波（ＲＦ）回路
Ａは、ＲＦ掃引発振器１０ａ、分波器１０ｂ、シンセサ
イズド掃引回路１０ｃを通じて閉ループ制御で周波数補
正を行ってＲＦ信号Ｓａを送出する。この周波数補正
中、すなわち所定の周波数に収束するまでの間にＲＦ信
号Ｓａの送出が停止する。このＲＦ信号Ｓａの送出の停
止を制御器２６が認識する。In this operation, the sweep radio frequency (RF) circuit A first performs frequency correction by closed loop control through the RF sweep oscillator 10a, the demultiplexer 10b, and the synthesized sweep circuit 10c, and sends out the RF signal Sa. The transmission of the RF signal Sa is stopped during the frequency correction, that is, until the frequency converges to a predetermined frequency. The controller 26 recognizes the stop of the transmission of the RF signal Sa.
【００２２】制御器２６がＲＦ信号Ｓａの送出停止を認
識すると、制御器２６はピンダイオード減衰器１２に制
御信号Ｃａを送出して、ピンダイオード減衰器１２を最
大減衰量に設定する。この設定でピンダイオード減衰器
１２からのＲＦ信号Ｓａの送出が停止する。When the controller 26 recognizes that the RF signal Sa has stopped being sent, the controller 26 sends a control signal Ca to the pin diode attenuator 12 to set the pin diode attenuator 12 to the maximum attenuation amount. With this setting, the transmission of the RF signal Sa from the pin diode attenuator 12 is stopped.
【００２３】次に、制御器２６がＲＦ信号Ｓａの送出停
止を認識している間に、周波数データ格納器１７に制御
信号Ｃｃを送出して、予めシンセサイズド掃引回路１０
ｃ、制御器２６を通じて取込んだ周波数データを送出す
る。この周波数データをＤ／Ａ変換器１６でアナログ信
号に変換する。Ｄ／Ａ変換器１６からのアナログ信号に
よってＲＦ発振器１５がＲＦ信号Ｓａと同一周波数及び
レベルのＲＦ信号（Ｓｂ）を送出する。Next, while the controller 26 recognizes the stop of the transmission of the RF signal Sa, the control signal Cc is transmitted to the frequency data storage 17 to preliminarily synthesize the sweep circuit 10.
c. The frequency data fetched through the controller 26 is transmitted. This frequency data is converted into an analog signal by the D / A converter 16. The RF oscillator 15 sends out an RF signal (Sb) having the same frequency and level as the RF signal Sa by the analog signal from the D / A converter 16.
【００２４】さらに、制御器２６がＲＦ信号Ｓａの送出
停止を認識している間に、ピンダイオード減衰器１４に
制御信号Ｃｂを送出して最小減衰量に設定し、このピン
ダイオード減衰器１４を通じてＲＦ発振器１５からのＲ
Ｆ信号Ｓｂを合成器１３に送出する。すなわち、掃引高
周波回路ＡからのＲＦ信号Ｓａが停止している間にＲＦ
信号Ｓｂが瞬断停止制御部Ｂから測定器接続部Ｃに送出
される。Further, while the controller 26 recognizes that the RF signal Sa has stopped being sent, the control signal Cb is sent to the pin diode attenuator 14 to set it to the minimum attenuation amount. R from RF oscillator 15
The F signal Sb is sent to the combiner 13. That is, while the RF signal Sa from the swept high frequency circuit A is stopped, RF
The signal Sb is sent from the instantaneous interruption stop control section B to the measuring instrument connecting section C.
【００２５】測定器接続部Ｃでは、ＲＦ信号Ｓａが停止
している間のＲＦ信号Ｓｂをピンダイオード減衰器１
８、方向性結合器１９、検波器２０、ＡＬＣ回路２１の
閉ループ制御を通じて所定の一定化のレベルに制御す
る。さらに、減衰器２２を通じて方向性結合器１９から
のＲＦ信号Ｓｂを所定のレベルに減衰させた出力掃引発
振信号Ｓｏを測定対象の無線通信装置に供給する。At the measuring device connecting portion C, the RF signal Sb is supplied to the pin diode attenuator 1 while the RF signal Sa is stopped.
8. Through the closed loop control of the directional coupler 19, the detector 20, and the ALC circuit 21, the level is controlled to a predetermined level. Further, the output sweep oscillation signal So obtained by attenuating the RF signal Sb from the directional coupler 19 to a predetermined level is supplied to the wireless communication device to be measured through the attenuator 22.
【００２６】この後、掃引高周波回路Ａで周波数補正の
閉ループ制御が収束してＲＦ信号Ｓａの送出を開始する
と、このＲＦ信号Ｓａの送出の開始を制御器２６が認識
する。この認識によって、制御器２６がピンダイオード
減衰器１２に制御信号Ｃａの送出を停止してピンダイオ
ード減衰器１２を最小減衰量に設定し、分波器１０ｂか
らのＲＦ信号Ｓａをピンダイオード減衰器１２を通じて
送出する。After that, when the closed loop control of the frequency correction in the swept high frequency circuit A converges and the transmission of the RF signal Sa is started, the controller 26 recognizes the start of the transmission of the RF signal Sa. Based on this recognition, the controller 26 stops sending the control signal Ca to the pin diode attenuator 12 and sets the pin diode attenuator 12 to the minimum attenuation amount, and the RF signal Sa from the duplexer 10b is set to the pin diode attenuator. 12 to send.
【００２７】同時に周波数データ格納器１７への制御信
号Ｃｃ及びピンダイオード減衰器１４への制御信号Ｃｂ
の送出を停止し、ピンダイオード減衰器１４を最大減衰
量に設定する。この設定でＲＦ発振器１５へのＲＦ信号
Ｓａの逆流を阻止し、かつ、ＲＦ発振器１５の発振を停
止させる。この動作でＲＦ信号Ｓａが供給される測定器
接続部Ｃは、閉ループ制御でＲＦ信号Ｓａを所定の一定
のレベルに制御した出力掃引発振信号Ｓｏを測定対象の
無線通信装置に供給する。At the same time, a control signal Cc to the frequency data storage 17 and a control signal Cb to the pin diode attenuator 14 are provided.
Is stopped and the pin diode attenuator 14 is set to the maximum attenuation amount. With this setting, the reverse flow of the RF signal Sa to the RF oscillator 15 is blocked, and the oscillation of the RF oscillator 15 is stopped. The measuring instrument connection section C to which the RF signal Sa is supplied by this operation supplies the output sweep oscillation signal So obtained by controlling the RF signal Sa to a predetermined constant level by the closed loop control to the wireless communication device to be measured.
【００２８】このようにＲＦ信号Ｓａの瞬断がなくなる
とともに、測定器接続部Ｃではピンダイオード減衰器１
８、方向性結合器１９、検波器２０、ＡＬＣ回路２１の
閉ループ制御が停止せず、出力掃引発振信号Ｓｏのレベ
ルが変動しなくなる。したがって測定対象の無線通信装
置での増幅部などの周波数補正における信頼性が向上
し、かつ、その測定が迅速に出来ることになる。As described above, the instantaneous interruption of the RF signal Sa is eliminated, and the pin diode attenuator 1 is connected to the measuring device connecting portion C.
8, the closed loop control of the directional coupler 19, the detector 20, and the ALC circuit 21 does not stop, and the level of the output sweep oscillation signal So does not change. Therefore, the reliability of the frequency correction of the amplification section and the like in the wireless communication device to be measured is improved, and the measurement can be performed quickly.
【００２９】[0029]
【発明の効果】以上説明したように、本発明の掃引発振
装置は掃引高周波回路からの第１の掃引高周波信号の送
出が停止した際に、第１の掃引高周波信号の送出路を非
導通に設定し、かつ、第２の掃引高周波信号の経路を導
通に設定して第１の掃引高周波信号に継続して第２の掃
引高周波信号を出力する制御を行っているので、周波数
調整及び周波数補正を行う際に供給する掃引周波数信号
の瞬断を阻止できるという効果を有する。さらに瞬断を
阻止するとともに瞬断停止制御部からの第１又は第２の
掃引高周波信号を所定の一定レベルに設定する制御が行
われるので、第１又は第２の掃引高周波信号を所定の一
定レベルへに設定する制御も停止せずに、測定の信頼性
が向上し、かつ、迅速に出来るという効果を有する。As described above, in the sweep oscillator of the present invention, when the sending of the first swept high frequency signal from the swept high frequency circuit is stopped, the sending path of the first swept high frequency signal is made non-conductive. Since the setting is made and the path of the second swept high-frequency signal is set to be conductive, and the control for continuously outputting the second swept high-frequency signal to the first swept high-frequency signal is performed, frequency adjustment and frequency correction are performed. This has the effect of preventing the instantaneous interruption of the sweep frequency signal supplied when performing. Further, control is performed to prevent the instantaneous interruption and to set the first or second sweeping high frequency signal from the instantaneous interruption stop control unit to a predetermined constant level, so that the first or second sweeping high frequency signal is kept to a predetermined constant level. There is an effect that the reliability of the measurement is improved and the speed can be increased without stopping the control for setting the level.
【図１】本発明の掃引発振装置の実施例における構成を
示すブロック図である。FIG. 1 is a block diagram showing a configuration of an embodiment of a swept oscillator according to the present invention.
【図２】従来の掃引発振装置の構成を示すブロック図で
ある。FIG. 2 is a block diagram showing a configuration of a conventional sweep oscillator.
Ａ 掃引高周波回路 Ｂ 瞬断停止制御部 Ｃ 測定器接続部 １０ａ ＲＦ掃引発振器１０ １０ｂ 分波器 １０ｃ シンセサイズド掃引回路 １２，１４，１８ ピンダイオード減衰器 １３ 合成器 １５ ＲＦ発振器 １９ 方向性結合器 ２０ 検波器 ２１ ＡＬＣ回路 ２２ 減衰器 ２６ 制御器 A Sweep high frequency circuit B Momentary interruption stop control unit C Measuring instrument connection part 10a RF sweep oscillator 10 10b Divider 10c Synthesized sweep circuit 12, 14, 18 pin diode attenuator 13 Combiner 15 RF oscillator 19 Directional coupler 20 detector 21 ALC circuit 22 attenuator 26 controller
Claims (5)
掃引高周波信号を送出する掃引高周波回路と、 上記第１の掃引高周波信号の送出経路を導通又は非導通
に切り替え、かつ、内部で生成した第２の掃引高周波信
号の送出経路を導通又は非導通に切り替えて第１又は第
２の掃引高周波信号を出力する瞬断停止制御部と、 上記掃引高周波回路からの第１の掃引高周波信号の送出
が停止した際に第１の掃引高周波信号の送出路を非導通
に設定し、かつ、上記瞬断停止制御部からの第２の掃引
高周波信号の経路を導通に設定して上記第２の掃引高周
波信号を上記瞬断停止制御部から出力する制御を行う制
御手段と、 を備えることを特徴とした掃引発振装置。1. A sweep high-frequency circuit for sending a first swept high-frequency signal whose frequency is corrected by closed-loop control, and a path for sending the first swept high-frequency signal switched between conducting and non-conducting and internally generated. A momentary interruption stop control unit that switches the transmission path of the second sweep high-frequency signal to conductive or non-conductive to output the first or second sweep high-frequency signal; and sends the first sweep high-frequency signal from the sweep high-frequency circuit. The second sweep high-frequency signal is set to non-conducting and the second sweep high-frequency signal path from the instantaneous interruption stop control unit is set to conducting when the second sweep high-frequency signal is stopped. A sweep oscillation device comprising: a control unit that controls to output a high-frequency signal from the instantaneous interruption stop control unit.
引高周波信号を出力する分波器と、 上記分波器で分波した高周波信号を所定の掃引周波数に
生成するためのシンセサイズド掃引回路と、 を備える請求項１記載の掃引発振装置。2. A swept high-frequency circuit, an oscillator that oscillates a high-frequency signal, a demultiplexer that demultiplexes the high-frequency signal from the oscillator and outputs a first swept high-frequency signal, and the demultiplexer. The swept oscillator according to claim 1, further comprising: a synthesized sweep circuit for generating a demultiplexed high frequency signal at a predetermined sweep frequency.
に基づいて減衰させる第１のピンダイオード減衰器と、 上記第１のピンダイオード減衰器からの第１の掃引高周
波信号と第２の掃引高周波信号を通過させる合成器と、 第２の掃引高周波信を制御信号で減衰させる第２のピン
ダイオード減衰器と、上記第２のピンダイオード減衰器
に第２の掃引高周波信号を送出する掃引高周波発振器
と、 周波数データ信号をアナログ化して出力するＤ／Ａ変換
器と、 制御信号に基づいて予め格納した周波数データを送出す
る周波数データ格納器と、 を備える請求項１記載の掃引発振装置。3. A first pin diode attenuator for attenuating the first swept high frequency signal from the swept high frequency circuit based on the control signal, A combiner for passing the first swept high frequency signal and the second swept high frequency signal, a second pin diode attenuator for attenuating the second swept high frequency signal with a control signal, and the second pin diode attenuator. A swept high frequency oscillator for transmitting a second swept high frequency signal, a D / A converter for analogizing and outputting a frequency data signal, and a frequency data storage device for transmitting frequency data stored in advance based on a control signal, The swept oscillator according to claim 1, further comprising:
御部からの第１又は第２の掃引高周波信号を所定の一定
レベルに設定する測定器接続部を備えた掃引発振装置。4. A sweep oscillation device comprising the measuring device connecting section for setting the first or second sweep high-frequency signal from the instantaneous interruption stop control section to a predetermined constant level, in addition to the configuration according to claim 1.
減衰させるピンダイオード減衰器と、 上記ピンダイオード減衰器からの第１又は第２の掃引高
周波信号を通過かつ分岐する方向性結合器と、 上記方向性結合器で分岐した第１又は第２の掃引高周波
信号を検波し、上記第１又は第２の掃引高周波信号のレ
ベルを示す検出信号を出力する検波器と、 上記検波器からの検出信号に基づいて、方向性結合器か
ら出力する第１又は第２の掃引高周波信号を一定のレベ
ルに設定する制御信号を上記ピンダイオード減衰器に送
出して、閉ループ制御を行うためのＡＬＣ回路と、 を備える請求項４記載の掃引発振装置。5. A pin-diode attenuator for attenuating the first or second sweep high-frequency signal from the instantaneous interruption stop control unit, and a first or second sweep from the pin-diode attenuator. A directional coupler that passes and branches a high-frequency signal, and a detection signal that detects the first or second swept high-frequency signal branched by the directional coupler and indicates the level of the first or second swept high-frequency signal. To the pin diode attenuator, and a control signal for setting the first or second swept high-frequency signal output from the directional coupler to a constant level based on the detection signal from the detector. The sweep oscillation device according to claim 4, further comprising: an ALC circuit for transmitting and performing closed-loop control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5252272A JP2531368B2 (en) | 1993-09-14 | 1993-09-14 | Sweep oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5252272A JP2531368B2 (en) | 1993-09-14 | 1993-09-14 | Sweep oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0786978A JPH0786978A (en) | 1995-03-31 |
| JP2531368B2 true JP2531368B2 (en) | 1996-09-04 |
Family
ID=17234938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5252272A Expired - Fee Related JP2531368B2 (en) | 1993-09-14 | 1993-09-14 | Sweep oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2531368B2 (en) |
-
1993
- 1993-09-14 JP JP5252272A patent/JP2531368B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0786978A (en) | 1995-03-31 |
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