JPH07177001A - Line type pulse modulator - Google Patents
Line type pulse modulatorInfo
- Publication number
- JPH07177001A JPH07177001A JP5322534A JP32253493A JPH07177001A JP H07177001 A JPH07177001 A JP H07177001A JP 5322534 A JP5322534 A JP 5322534A JP 32253493 A JP32253493 A JP 32253493A JP H07177001 A JPH07177001 A JP H07177001A
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- pulse
- power supply
- potential
- bias potential
- 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
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はレーダ送信装置に用いら
れるラインタイプパルス変調器に関し、特にスイッチン
グ素子の制御機能維持および信頼性向上技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line type pulse modulator used in a radar transmitter, and more particularly to a technique for maintaining a control function of a switching element and improving reliability.
【０００２】[0002]
【従来の技術】従来、ラインタイプパルス変調器は、マ
グネトロン，クライストロンおよびＴＷＴ等のパルス変
調型送信管を駆動するパルス発生装置として広く用いら
れている。図３は従来のラインタイプ変調器を示す図で
変調パルス波形はパルス成形回路４にて決定され、この
変調パルスにより送信管（負荷）５を駆動し、規定のパ
ルス幅の送信電力を得て、空中線装置に供給する。2. Description of the Related Art Conventionally, line type pulse modulators have been widely used as pulse generators for driving pulse modulation type transmission tubes such as magnetrons, klystrons and TWTs. FIG. 3 is a diagram showing a conventional line type modulator. The modulation pulse waveform is determined by the pulse shaping circuit 4, and the transmission tube (load) 5 is driven by this modulation pulse to obtain the transmission power of the specified pulse width. , Supply to the antenna equipment.
【０００３】この変調パルスの動作はスイッチング素子
７で制御される。つまりスイッチング素子７がＯＦＦの
とき、パルス成形回路４に充電された電圧がこの素子の
ＯＮにより、放電され、負荷の変調パルスが作られる。
スイッチング素子７としては最近、バイアス電位を印加
して動作を停止し、変調パルスを発生したい場合にはバ
イアス電位の供給を停止しそれによりスイッチング素子
が導通状態となりパルス成形回路から放電エネルギーを
流し変調パルスを自在に作るという素子が主流となりつ
つある。The operation of this modulated pulse is controlled by the switching element 7. That is, when the switching element 7 is off, the voltage charged in the pulse shaping circuit 4 is discharged by turning on this element, and a load modulation pulse is generated.
The switching element 7 has recently been applied with a bias potential to stop its operation, and when it is desired to generate a modulation pulse, the supply of the bias potential is stopped so that the switching element becomes conductive and discharge energy is supplied from the pulse shaping circuit to perform modulation. The element that can freely generate pulses is becoming mainstream.
【０００４】尚、スイッチング素子としはサイラトロ
ン，ＳＣＲ等が一般的に用いられてきたが、本素子はＯ
Ｎ制御のみであり、変調パルスとしてはパルス成形回路
４にて形成される波形しか対応できなかった。その後変
調パルスのパルス幅を自在に選択できるように考えられ
たのがＯＮ−ＯＦＦ制御可能なスイッチング素子であ
る。しかしパルス変調器に使用するためには大電流対応
のためＯＦＦ制御が重量である。Although a thyratron, an SCR, etc. have been generally used as a switching element, this element is
Only N control was possible, and only the waveform formed by the pulse shaping circuit 4 could be used as the modulation pulse. After that, a switching element capable of ON-OFF control was devised so that the pulse width of the modulation pulse could be freely selected. However, in order to use it for a pulse modulator, the OFF control is heavy because it corresponds to a large current.
【０００５】[0005]
【発明が解決しようとする課題】このようなラインタイ
プパルス変調器において、スイッチング素子が生命線で
あり、本電源が故障した場合、本素子の制御が不能とな
り、変調パルスを供給できなくなるとともに高圧直流電
源１からの過電流により、スイッチング素子が破壊され
ていまう可能性もあった。In such a line type pulse modulator, when the switching element is the lifeline and the main power supply fails, the control of this element becomes impossible and the modulation pulse cannot be supplied and the high voltage DC There is a possibility that the switching element may be destroyed due to the overcurrent from the power supply 1.
【０００６】[0006]
【課題を解決するための手段】本発明のラインタイプパ
ルス変調器は、スイッチング素子の陰極点（−側）と接
地点間に所定電位を印加する電源を備え、何かの原因で
バイアス電位が供給されなくなった状態でも、スイッチ
ング素子を非導通状態に保ち、こ素子の破壊を防ぐ。The line type pulse modulator of the present invention comprises a power source for applying a predetermined potential between the cathode point (-side) of the switching element and the ground point, and the bias potential is Even when the power supply is stopped, the switching element is kept in a non-conducting state and the destruction of this element is prevented.
【０００７】[0007]
【実施例】次に本発明の一実施例について図１，図２を
参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
【０００８】図１のごとく、本発明においては、スイッ
チング素子７の陰極側（−側）を接地電位と接続しな
い。本陰極側はスイッチング素子７に印加されているバ
イアス電位を同電位を出力するリターン系バイアス電源
６を介して接地する。As shown in FIG. 1, in the present invention, the cathode side (-side) of the switching element 7 is not connected to the ground potential. On the cathode side, the bias potential applied to the switching element 7 is grounded via the return system bias power source 6 that outputs the same potential.
【０００９】動作としては、スイチング素子７の陰極側
（−側）がＧＮＤよりバイアス電位−Ｂｖ分だけ深くバ
イアスされているが、本変調器の基準電位はパルスリタ
ーンであり、図２のような動作を行ない変調パルスを作
る。In operation, the cathode side (-side) of the switching element 7 is biased deeper than GND by a bias potential -Bv, but the reference potential of this modulator is a pulse return, as shown in FIG. The operation is performed to create a modulated pulse.
【００１０】ここで駆動器９等の故障でバイアス電位が
印加されなくなった場合スイッチング素子７にはバイア
ス電位が供給できなくなるが、スイッチング素子７の陰
極側（−側）にはリターン系バイアス電源６によりバイ
アス電位が印加されているため、スイッチング素子７の
陰極側（−側）とゲート間には本電源６によりバイアス
電位が印加されて導通状態となる。これによりスイッチ
ング素子７は非導通となり制御不能状態を回避でき部品
破損等を防止できる。If the bias potential is not applied due to a failure of the driver 9 or the like, the bias potential cannot be supplied to the switching element 7, but the return bias power supply 6 is provided on the cathode side (-side) of the switching element 7. Since the bias potential is applied by, the bias potential is applied by the main power supply 6 between the cathode side (− side) of the switching element 7 and the gate, so that the switching element 7 becomes conductive. As a result, the switching element 7 becomes non-conducting, an uncontrollable state can be avoided, and damage to parts and the like can be prevented.
【００１１】[0011]
【発明の効果】以上説明したように、本発明は、ライン
タイプパルス変調器において、スイッチング素子へのバ
イアス電位の印加がない場合、この素子の制御不能から
高圧電源からの出力電流等により、変調器を構成してい
る部品破損が起きるのを回避させる効果がある。As described above, according to the present invention, in the line type pulse modulator, when the bias potential is not applied to the switching element, the modulation is performed due to the output current from the high voltage power source or the like due to the inability to control this element. This has the effect of avoiding damage to the parts that make up the container.
【図１】本発明のパルス変調器の一実施例を示す図。FIG. 1 is a diagram showing an embodiment of a pulse modulator of the present invention.
【図２】本発明のパルス変調器の動作波形を示す図。FIG. 2 is a diagram showing operation waveforms of the pulse modulator of the present invention.
【図３】従来のパルス変調器の例を示す図FIG. 3 is a diagram showing an example of a conventional pulse modulator.
１ 高圧直流電源 ２ チャージングチョーク ３ ホールドオフダイオード ４ パルス成形回路 ５ 負荷 ６ リターン系バイアス電源 ７ スイッチング素子 ８ パルストランス ９ 駆動器 1 High-voltage DC power supply 2 Charging choke 3 Hold-off diode 4 Pulse shaping circuit 5 Load 6 Bias power supply for return system 7 Switching element 8 Pulse transformer 9 Driver
Claims (2)
スイッチング素子により放電して駆動パルスを作るライ
ンタイプパルス変調器において、スイッチング素子の陰
極点（−側）と接地点間に電位を印加する電源を備える
ことを特徴とするラインタイプパルス変調器。1. In a line type pulse modulator for generating a driving pulse by discharging a charge charged in a pulse shaping circuit by a switching element, a potential is applied between a cathode point (-side) of the switching element and a ground point. A line type pulse modulator having a power supply.
電流を受け放電によりパルス変調型送信管を駆動する駆
動パルスを発生するパルス成形回路と、パルス成形回路
の放電を起こさせるためのスイッチング素子と、スイッ
チング素子の制御端子に非導通のためのバイアス電位と
放電時に導通電位を与える駆動器と、スイッチング素子
と接地電位との間に設けられバイアス電位の供給が止っ
たときスイッチング素子が導通状態となるのを防ぐため
の付加電源とを具備するラインタイプパルス変調器。2. A high voltage DC power supply, a pulse shaping circuit for generating a drive pulse for driving a pulse modulation type transmission tube by receiving a charging current from the high voltage DC power supply, and a switching element for causing discharge in the pulse shaping circuit. And a driver that applies a bias potential for non-conduction to the control terminal of the switching element and a conduction potential at the time of discharge, and the switching element is in a conductive state when the supply of the bias potential is stopped between the switching element and the ground potential. Line type pulse modulator having an additional power supply for preventing
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5322534A JPH07177001A (en) | 1993-12-21 | 1993-12-21 | Line type pulse modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5322534A JPH07177001A (en) | 1993-12-21 | 1993-12-21 | Line type pulse modulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07177001A true JPH07177001A (en) | 1995-07-14 |
Family
ID=18144746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5322534A Pending JPH07177001A (en) | 1993-12-21 | 1993-12-21 | Line type pulse modulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07177001A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100319289B1 (en) * | 1998-11-23 | 2001-12-29 | 클라크 3세 존 엠. | Line driver architecture for low voltage and low power 10/100 base-t applications |
| KR101376549B1 (en) * | 2012-12-28 | 2014-04-01 | 주식회사 다원시스 | Pulse modulator reducing noise |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4970564A (en) * | 1972-10-27 | 1974-07-08 |
-
1993
- 1993-12-21 JP JP5322534A patent/JPH07177001A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4970564A (en) * | 1972-10-27 | 1974-07-08 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100319289B1 (en) * | 1998-11-23 | 2001-12-29 | 클라크 3세 존 엠. | Line driver architecture for low voltage and low power 10/100 base-t applications |
| KR101376549B1 (en) * | 2012-12-28 | 2014-04-01 | 주식회사 다원시스 | Pulse modulator reducing noise |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19970212 |