JPS6392415U - - Google Patents
Info
- Publication number
- JPS6392415U JPS6392415U JP18808286U JP18808286U JPS6392415U JP S6392415 U JPS6392415 U JP S6392415U JP 18808286 U JP18808286 U JP 18808286U JP 18808286 U JP18808286 U JP 18808286U JP S6392415 U JPS6392415 U JP S6392415U
- Authority
- JP
- Japan
- Prior art keywords
- chirp
- wave
- generating
- signal
- circuit according
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は、本考案のチヤープ波発生回路の基本
構成を示すブロツク図、第２図〜第４図は、第１
図の基本構成を利用した第１〜第３実施例の構成
を示すブロツク図である。
１……スタート信号発生器、４……比較器、７
……周波数−電圧変換器、１０……鋸歯状波発生
回路、２０……電圧制御発振器、３０，６０……
局部発振器、４０……乗算器、５０……ゼロクロ
ス回路、６２……位相比較器、６６……サンプル
ホールド。
FIG. 1 is a block diagram showing the basic configuration of the chirp wave generation circuit of the present invention, and FIGS.
FIG. 2 is a block diagram showing the configuration of first to third embodiments using the basic configuration shown in the figure. 1... Start signal generator, 4... Comparator, 7
... Frequency-voltage converter, 10 ... Sawtooth wave generation circuit, 20 ... Voltage controlled oscillator, 30, 60 ...
Local oscillator, 40... Multiplier, 50... Zero cross circuit, 62... Phase comparator, 66... Sample hold.
補正 昭６２．６．５
実用新案登録請求の範囲を次のように補正する
。Amendment June 5, 1986 The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
(1) スタート信号に応答して、周波数変調用信
号を発生する手段と、
このスタート信号に応答して、低周波の局部発
振信号を発生する手段と、
前記周波数変調用信号により、比較的高周波で
比帯域幅が狭い第１チヤープ波を発生する手段と
、
この第１チヤープ波を、前記局部発振信号によ
りヘテロダイン変換する手段とを具え、このヘト
ロダイン変換手段によつて超音波発生に適した、
低周波で、且つ比帯域幅の広い第２チヤープ波を
発生することを特徴とするチヤープ信号発生回路
。
(2) 前記周波数変調用信号発生手段と前記第１
チヤープ波発生手段との間に、第１チヤープ波の
同期発振およびトラツキング機能を有する周波数
電圧変換手段と比較手段とから構成されるループ
回路を介挿したことを特徴とする実用新案登録請
求の範囲第１項記載のチヤープ信号発生回路。
(3) 更に、前記第１チヤープ波発生手段からの
第１チヤープ波を受信し、これのゼロクロスを検
出し、この検出されたゼロクロスを計数する手段
を設け、前記スタート信号をこの計数結果で制御
するようにしたことを特徴とする実用新案登録請
求の範囲第２項記載のチヤープ信号発生回路。
(4) 前記第１チヤープ信号発生手段と前記ヘテ
ロダイン変換手段との間に、第１チヤープ波の同
期発振およびトラツキング機能を有するフエーズ
ロツクループ手段を介挿したことを特徴とする実
用新案登録請求の範囲第１項記載のチヤープ信号
発生回路。
(5) 前記第１チヤープ波発生手段を電圧制御発
振器とし、前記ヘテロダイン変換手段を乗算器と
したことを特徴とする実用新案登録請求の範囲第
１項記載のチヤープ信号発生回路。
(6) 前記周波数電圧変換手段を、遅延線ＦＭ復
調器またはパルスカウントＦＭ復調器としたこと
を特徴とする実用新案登録請求の範囲第２項記載
のチヤープ信号発生回路。[Claims for Utility Model Registration] (1) means for generating a frequency modulation signal in response to a start signal; means for generating a low frequency local oscillation signal in response to the start signal; The apparatus comprises means for generating a first chirp wave having a relatively high frequency and a narrow fractional bandwidth using a modulation signal, and means for heterodyne converting the first chirp wave using the local oscillation signal, and the heterodyne conversion means suitable for ultrasonic generation.
A chirp signal generating circuit characterized in that it generates a second chirp wave having a low frequency and a wide specific bandwidth. (2) The frequency modulation signal generating means and the first
Claims for registration of a utility model characterized in that a loop circuit consisting of frequency-voltage conversion means and comparison means having a function of synchronous oscillation and tracking of the first chirp wave is inserted between the chirp wave generation means. 2. The chirp signal generating circuit according to item 1. (3) Furthermore, means is provided for receiving the first chirp wave from the first chirp wave generating means, detecting zero crossings thereof, and counting the detected zero crossings, and controlling the start signal based on the counting result. A chirp signal generating circuit according to claim 2, characterized in that the circuit is configured to: (4) A request for registration of a utility model characterized in that phase lock loop means having a function of synchronous oscillation and tracking of the first chirp wave is inserted between the first chirp signal generating means and the heterodyne conversion means. The chirp signal generating circuit according to item 1. (5) The chirp signal generating circuit according to claim 1, wherein the first chirp wave generating means is a voltage controlled oscillator, and the heterodyne conversion means is a multiplier. (6) The chirp signal generation circuit according to claim 2, wherein the frequency-voltage conversion means is a delay line FM demodulator or a pulse count FM demodulator.
Claims (1)
鋸歯状波を発生する手段と、 このスタート信号に応答して、低周波の局部発
振信号を発生する手段と、 前記鋸歯状波により、比較的高周波で比帯域幅
が狭い第１チヤープ波を発生する手段と、 この第１チヤープ波を、前記局部発振信号によ
りヘテロダイン変換する手段とを具え、このヘテ
ロダイン変換手段によつて超音波発生に適した、
低周波で、且つ比帯域幅の広い第２チヤープ波を
発生させたことを特徴とするチヤープ信号発生回
路。 (2) 前記鋸歯状波発生手段と前記第１チヤープ
波発生手段との間に、第１チヤープ波の同期発振
およびトラツキング機能を有する周波数電圧変換
手段と比較手段とから構成されるループ回路を介
挿したことを特徴とする実用新案登録請求の範囲
第１項記載のチヤープ信号発生回路。 (3) 更に、前記第１チヤープ波発生手段からの
第１チヤープ波を受信し、これのゼロクロスを検
出し、この検出されたゼロクロスを計数する手段
を設け、前記スタート信号をこの計数結果で制御
するようにしたことを特徴とする実用新案登録請
求の範囲第２項記載のチヤープ信号発生回路。 (4) 前記第１チヤープ信号発生手段と前記ヘテ
ロダイン変換手段との間に、第１チヤープ波の同
期発振およびトラツキング機能を有するフエーズ
ロツクループ手段を介挿したことを特徴とする実
用新案登録請求の範囲第１項記載のチヤープ信号
発生回路。 (5) 前記第１チヤープ波発生手段を電圧制御発
振器とし、前記ヘテロダイン変換手段を乗算器と
したことを特徴とする実用新案登録請求の範囲第
１項記載のチヤープ信号発生回路。 (6) 前記周波数電圧変換手段を、遅延線ＦＭ復
調器またはパルスカウントＦＭ復調器としたこと
を特徴とする実用新案登録請求の範囲第２項記載
のチヤープ信号発生回路。[Claims for Utility Model Registration] (1) Means for generating a sawtooth wave with good linearity in response to a start signal; Means for generating a low-frequency local oscillation signal in response to this start signal. and means for generating a first chirp wave having a relatively high frequency and a narrow fractional bandwidth using the sawtooth wave; and means for heterodyne-converting the first chirp wave by the local oscillation signal; Suitable for ultrasonic generation by means,
A chirp signal generating circuit characterized in that it generates a second chirp wave having a low frequency and a wide specific bandwidth. (2) A loop circuit comprising a frequency-voltage conversion means and a comparison means having a function of synchronous oscillation and tracking of the first chirp wave is interposed between the sawtooth wave generation means and the first chirp wave generation means. The chirp signal generating circuit according to claim 1 of the utility model registration claim, characterized in that: (3) Furthermore, means is provided for receiving the first chirp wave from the first chirp wave generating means, detecting zero crossings thereof, and counting the detected zero crossings, and controlling the start signal based on the counting result. A chirp signal generating circuit according to claim 2, characterized in that the circuit is configured to: (4) A request for registration of a utility model characterized in that phase lock loop means having a function of synchronous oscillation and tracking of the first chirp wave is inserted between the first chirp signal generating means and the heterodyne conversion means. The chirp signal generating circuit according to item 1. (5) The chirp signal generating circuit according to claim 1, wherein the first chirp wave generating means is a voltage controlled oscillator, and the heterodyne conversion means is a multiplier. (6) The chirp signal generation circuit according to claim 2, wherein the frequency-voltage conversion means is a delay line FM demodulator or a pulse count FM demodulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18808286U JPS6392415U (en) | 1986-12-06 | 1986-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18808286U JPS6392415U (en) | 1986-12-06 | 1986-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6392415U true JPS6392415U (en) | 1988-06-15 |
Family
ID=31139118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18808286U Pending JPS6392415U (en) | 1986-12-06 | 1986-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6392415U (en) |
-
1986
- 1986-12-06 JP JP18808286U patent/JPS6392415U/ja active Pending
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