JPH0193843U - - Google Patents
Info
- Publication number
- JPH0193843U JPH0193843U JP18967587U JP18967587U JPH0193843U JP H0193843 U JPH0193843 U JP H0193843U JP 18967587 U JP18967587 U JP 18967587U JP 18967587 U JP18967587 U JP 18967587U JP H0193843 U JPH0193843 U JP H0193843U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- detection
- synchronous
- microwave
- 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
- 238000001514 detection method Methods 0.000 claims description 18
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 3
- 230000003213 activating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図は、本考案のマイクロ波信号検出装置の
一実施例のブロツク回路図であり、第２図は、第
１図の同期検波回路の一例を示す回路図であり、
第３図は、第１図の同期検波回路の他の例を示す
回路図であり、第４図は、所定周波数のマイクロ
波信号が所定の電界強度以上で継続して送信され
るときの動作を説明するタイムチヤートであり、
第５図は、雑音により一時定に所定周波数のマイ
クロ波信号がアンテナに入射されたときの動作を
説明するタイムチヤートであり、第６図は、本考
案のマイクロ波信号検出装置に用いられる検出手
段の他の例を示すブロツク回路図である。
１：アンテナ、２：ミクサ回路、３：局部発振
回路、４：ＩＦ増幅回路、５：検波回路、６：同
期検波回路、７：パルス発生回路、８：積分回路
、９：比較回路、１０：基準電圧設定回路。
FIG. 1 is a block circuit diagram of an embodiment of the microwave signal detection device of the present invention, and FIG. 2 is a circuit diagram showing an example of the synchronous detection circuit of FIG.
FIG. 3 is a circuit diagram showing another example of the synchronous detection circuit shown in FIG. 1, and FIG. 4 shows the operation when a microwave signal of a predetermined frequency is continuously transmitted at a predetermined electric field strength or higher. This is a time chart that explains
FIG. 5 is a time chart illustrating the operation when a microwave signal of a predetermined frequency is temporarily input to the antenna due to noise, and FIG. 6 is a detection diagram used in the microwave signal detection device of the present invention. FIG. 7 is a block circuit diagram showing another example of the means. 1: Antenna, 2: Mixer circuit, 3: Local oscillation circuit, 4: IF amplifier circuit, 5: Detector circuit, 6: Synchronous detection circuit, 7: Pulse generator circuit, 8: Integrator circuit, 9: Comparison circuit, 10: Reference voltage setting circuit.
Claims (1)
信号に周波数変換する周波数変換手段と、この周
波数変換手段を間欠的に動作状態とする制御パル
スを出力するパルス発生回路と、前記ＩＦ信号を
整流して検波信号を出力する検波回路と、前記制
御パルスを同期信号として前記検波信号を同期検
波して同期検波信号を出力する同期検波回路と、
前記同期検波信号が所定以上の大きさで前記制御
パルスに同期して出力すると前記マイクロ波信号
が送信されていることを示す検出信号を出力する
検出手段と、を備えたことを特徴とするマイクロ
波信号検出装置。 (2) 前記周波数変換手段が、局部発振回路とミ
クサ回路とからなり、前記局部発振回路が前記制
御パルスで発振動作状態となるように構成された
ことを特徴とする実用新案登録請求の範囲第１項
記載のマイクロ波信号検出装置。 (3) 前記検出手段が、前記同期検波信号を積分
して積分信号を出力する積分回路と、前記積分信
号と基準信号とを比較する比較回路と、で構成さ
れたことを特徴とする実用新案登録請求の範囲第
１項または第２項記載のマイクロ波信号検出装置
。[Scope of claims for utility model registration] (1) Microwave signals incident on the antenna are
a frequency conversion means for converting the frequency into a signal; a pulse generation circuit for outputting a control pulse for intermittently activating the frequency conversion means; a detection circuit for rectifying the IF signal and outputting a detection signal; and the control a synchronous detection circuit that synchronously detects the detection signal using a pulse as a synchronous signal and outputs a synchronous detection signal;
Detecting means for outputting a detection signal indicating that the microwave signal is being transmitted when the synchronous detection signal is output in synchronization with the control pulse with a magnitude greater than a predetermined value. Wave signal detection device. (2) The utility model registration claim 1 is characterized in that the frequency conversion means includes a local oscillation circuit and a mixer circuit, and the local oscillation circuit is configured to be in an oscillating state by the control pulse. The microwave signal detection device according to item 1. (3) The utility model characterized in that the detection means is comprised of an integrating circuit that integrates the synchronous detection signal and outputs an integrated signal, and a comparison circuit that compares the integrated signal and a reference signal. A microwave signal detection device according to registered claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18967587U JPH0193843U (en) | 1987-12-14 | 1987-12-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18967587U JPH0193843U (en) | 1987-12-14 | 1987-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0193843U true JPH0193843U (en) | 1989-06-20 |
Family
ID=31480694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18967587U Pending JPH0193843U (en) | 1987-12-14 | 1987-12-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0193843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024252536A1 (en) * | 2023-06-07 | 2024-12-12 | 三菱電機株式会社 | Signal detection circuit |
-
1987
- 1987-12-14 JP JP18967587U patent/JPH0193843U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024252536A1 (en) * | 2023-06-07 | 2024-12-12 | 三菱電機株式会社 | Signal detection circuit |
| JP7618116B1 (en) * | 2023-06-07 | 2025-01-20 | 三菱電機株式会社 | Signal Detection Circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5479384A (en) | System of synchronously leading in phase locked loop | |
| EP0414392A3 (en) | Phase detector | |
| AU664610B2 (en) | An arrangement for comparing two signal bursts in a DME system | |
| JPH0224273Y2 (en) | ||
| JPH0485296U (en) | ||
| JPS6442949A (en) | Timing extraction circuit | |
| JPS5530282A (en) | Communication system | |
| JPS62186073U (en) | ||
| JPH03114080U (en) | ||
| JPS62151611U (en) | ||
| JPS6380699U (en) | ||
| JPS63238569A (en) | Electromagnetic wave detector | |
| JPS6424503A (en) | Frequency converting device | |
| GB2011741A (en) | Power amplifier arrangement | |
| JPH01156635U (en) | ||
| JPS5596432A (en) | Pressure detector | |
| JPH01126642U (en) | ||
| JPS63153634U (en) | ||
| JPH03104871U (en) | ||
| JPS6415168U (en) | ||
| JPS62191227U (en) | ||
| JPH0399598A (en) | Radio control transmission/reception system | |
| JPH02150834U (en) | ||
| JPS63159936U (en) | ||
| JPH03108293U (en) |