JPS58168334A - Eliminating device of interference wave - Google Patents
Eliminating device of interference waveInfo
- Publication number
- JPS58168334A JPS58168334A JP5064982A JP5064982A JPS58168334A JP S58168334 A JPS58168334 A JP S58168334A JP 5064982 A JP5064982 A JP 5064982A JP 5064982 A JP5064982 A JP 5064982A JP S58168334 A JPS58168334 A JP S58168334A
- Authority
- JP
- Japan
- Prior art keywords
- wave
- output
- blocking
- frequency
- flip
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
- G01S1/08—Systems for determining direction or position line
- G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
- G01S1/24—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being pulses or equivalent modulations on carrier waves and the transit times being compared by measuring the difference in arrival time of a significant part of the modulations, e.g. LORAN systems
- G01S1/245—Details of receivers cooperating therewith, e.g. determining positive zero crossing of third cycle in LORAN-C
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
- G01S1/04—Details
- G01S1/045—Receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Noise Elimination (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は比較的受信周波数帯域が広い受信機において
その受信周波数帯斌又はその近傍に存在する単一周波数
の妨害波を除去する妨害波除去装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an interference wave removal device for eliminating single-frequency interference waves existing in or near the reception frequency band of a receiver having a relatively wide reception frequency band.
例えばロランＣ受信機においてはその受信周波数帯の近
傍にデツカ航法装置の電波、いわゆるデツカ電波が近接
していることがある。このデツカ電波をロランＣ受信機
においては阻止する必要があり、その丸めに狭帯域阻止
ｒ波器、いわゆるノツチフィルターが用いられている。For example, in a Loran C receiver, radio waves from a Detsuka navigation device, so-called Detsuka radio waves, may be in the vicinity of its receiving frequency band. It is necessary to block these deep radio waves in the Loran C receiver, and a narrow band blocking r-wave device, a so-called notch filter, is used for rounding.
ロランＣ受信機をＩｌ載した船舶などの移動体は、その
航行中に異なつ九周波数のデツカ電波を受信するため、
妨害となるデツカ電波の周波数が異なる領・域に移動体
が入ると、その際に前記狭帯域阻止Ｐ波器の中心周波数
を調整してその妨害電波に正確に合わせる必要がある。Since moving objects such as ships equipped with Loran-C receivers receive radio waves of nine different frequencies during navigation,
When a moving object enters an area where the frequency of interfering radio waves differs, it is necessary to adjust the center frequency of the narrow band blocking P-wave device to accurately match the interfering radio waves.
この調整のための操作は狭帯域阻止Ｐ波器の中心周波数
が非常に狭い丸めむずかしく、調整に時間と熟練とを必
要としえ。This adjustment operation is difficult because the center frequency of the narrow band-stopping P-wave device is very narrow, and adjustment requires time and skill.
この発明の目的は、除去しようとする妨害波周波数の近
くに狭帯域阻止Ｐ波器の中心Ｐ波数を持っていくと、そ
の後は自動的にかつ正確にその妨害波の周波数に狭帯域
阻止Ｐ波器の中心周波数が一致するようにした妨害波除
去装置を提供することにある。The purpose of this invention is to bring the center P-wave number of the narrow-band rejection P-wave device close to the interference wave frequency to be removed, and then automatically and accurately set the narrow-band rejection P-wave number to the frequency of that interference wave. An object of the present invention is to provide an interference wave removal device in which the center frequencies of wave generators are made to coincide with each other.
さらに詳しくは妨害波及び信号の受信通路に挟帯域阻止
ｒ波器が挿入されるが、狭帯域阻止Ｐ波器の入力側と出
力側との信号を分岐して堆〉出し、これらの信号の位相
を比較してその両者が一致するように狭帝城阻止Ｐ波器
の中心周波数を制御するがその位相比較器を簡単に構成
できるようにし１１１
ようとするものである。More specifically, a narrowband blocking R-wave filter is inserted in the receiving path for interference waves and signals, and the signals on the input side and output side of the narrowband blocking P-wave filter are separated and piled. The center frequency of the Narrow P-wave filter is controlled so that the phases are compared and the two match, and the purpose is to simplify the construction of the phase comparator.
この発明によれば信号通路に挿入される妨害波を阻止す
るための狭帯域阻止Ｐ波器は一般にその阻止中心周波数
の前後の周波数に対して出力の位相が急激に変化してい
ることを利用し、その狭帯絨阻止ｒ波器の入力側と出力
側の信号をとり出し、これらの位相差を位相比較器で検
出する。その位相比較器の入力を分岐して方形波に波形
整形し、その方形波の論理積をと９、その論理積の出力
によって第１．第２′フリツプフロツプをクリヤすると
共に前記両方形波によってこれら第１．第２フリツプフ
ロツプをそれぞれトリガする。これら第１、第２７リツ
プフロツプの入力側には少くとも初期状態においては一
方の論理レベルが与えられている。第１．第２フリツプ
フロツプの出力端子を、ダイオード及び抵抗器の第１．
第２直列回路を通じて互いに接続し、その場合そのダイ
オードの極性を各その接続点からみると互いに逆極性と
なるようにし、その接続点と接地との間にコンデンサを
接続して第１．第２フリツプツロツプの出力の状態に応
じてそのコンデンサに対する充放電が上記抵抗器との時
定数によって行われる。このコンデン′すの電圧を狭帯
域阻止ｒ波器にその阻止中心周波数を制御する制御電圧
として与える。このようにして通常の７リツプフロツプ
とアンド回路とさらにダイオード、抵抗器、コンデンサ
とによって簡単に位相比較器が構成される。しかもその
フリツプフ四ツブの出力は共にゼロの状１１１において
コンデンサの電圧が正確に保持される。According to the present invention, a narrow band blocking P-wave device for blocking interference waves inserted into a signal path generally utilizes the fact that the phase of the output changes rapidly for frequencies before and after the blocking center frequency. Then, the signals on the input side and the output side of the narrow band filter blocking r-wave filter are taken out, and the phase difference between them is detected by a phase comparator. The input of the phase comparator is branched, the waveform is shaped into a square wave, the logical product of the square wave is calculated as 9, and the output of the logical product is used as the first . The second flip-flop is cleared and the first and second flip-flops are cleared. Trigger the second flip-flop, respectively. The input sides of these first and 27th lip-flops are given one logic level at least in the initial state. 1st. The output terminal of the second flip-flop is connected to the output terminal of the diode and the resistor.
are connected to each other through a second series circuit, in which case the polarities of the diodes are opposite to each other when viewed from their respective connection points, and a capacitor is connected between the connection points and ground. Depending on the state of the output of the second flip-flop, charging and discharging of the capacitor is performed by a time constant with the resistor. The voltage of this capacitor is applied to the narrow band blocking r-wave device as a control voltage for controlling its blocking center frequency. In this way, a phase comparator can be easily constructed using a normal 7-lip flop, an AND circuit, a diode, a resistor, and a capacitor. Moreover, the outputs of the four flip-flops are all in the zero state 111, so that the voltage of the capacitor is accurately maintained.
次に第１図を参照してこの発明による妨害波除去装蓋の
実施例を説明しよう。受信信号は入力端子１１よシ前段
増幅器１２を通じて狭帯域阻止ｒ波器１３に供給され、
このＰ波器によ）妨害波が除去され、その狭債竣阻止ｒ
波器１３の出力は後段増幅器１４を通じ、さらに出力端
子１５を通じて、ロランＣ信号処理装置のような処理装
置１６に供給される。Next, an embodiment of the interference wave removal device according to the present invention will be described with reference to FIG. The received signal is supplied from the input terminal 11 to the narrow band rejection r-wave device 13 through the preamplifier 12,
This P wave device removes the interference wave and prevents the narrow bond completion.
The output of wave generator 13 is fed through a post-amplifier 14 and further through an output terminal 15 to a processing device 16, such as a Loran C signal processor.
狭帯域阻止ｆ波器１３はその阻止中心周波数が、制御端
子１７よ）の制御電圧によって例えば可変容量ダイオー
ド１８ 、１９の容量が制御されて便化されゐものであ
り、かつその阻止中心周波数の前後に対して入出力の位
相が急激ＫＷ化するｔのであ）、例えばノツチフィルタ
ーを使用することができる。The narrow band blocking f-wave filter 13 has its blocking center frequency controlled by controlling the capacitance of the variable capacitance diodes 18 and 19, for example, by a control voltage at a control terminal 17. For example, a notch filter can be used because the phase of the input and output changes sharply in KW relative to the front and rear).
狭帯埴阻止ｒ波器１３の入力側と出力側の信号が分岐さ
れて帯埴通過ｒ波器２１ 、２２より取り出される。帯
埴通過ｒ波器２１ 、２２は互Ｋ １１ぼ同一の周波数
特性を持っており、かつその通過中心周波数は狭帯埴阻
止ｒ波器１３の中心周波数と一致するようにされる。こ
の例においては帯域通過ｒ波！９２１ 。The signals on the input side and the output side of the narrow band blocking r-wave filter 13 are branched and taken out from the narrow band blocking r-wave filters 21 and 22. The band-pass r-wave filters 21 and 22 have almost the same frequency characteristics, and their passing center frequencies are made to match the center frequency of the narrow band-block r-wave filter 13. In this example bandpass r-wave! 921.
２２の構成素子の−ｓＫ例えば可変容量ダイオードを用
い、制御端子１７の制御電圧を帯域通過ｒ波器！ｌ・、
２２の制御、端子に与えて、これらｒ波器１３ 、２１
、２２の中心周波数がほぼ一致した状態で変化できる
ようにされる。帯域通過ｒ波器２１ 、２２の出力はそ
れぞれ波形整形回路２３ 、２４により方形波に波形整
形され、これら波形整形された方形波は位相比較器２５
で互に位相比較され、その位相比較出力社制御燗子１７
に制御電圧信号として印加される。-sK of the 22 components, for example, a variable capacitance diode, is used to convert the control voltage of the control terminal 17 into a bandpass r-wave device! l・、
22 controls are applied to the terminals of these r-wave generators 13 and 21.
, 22 are allowed to change while remaining substantially consistent. The outputs of the band-pass r wave generators 21 and 22 are shaped into square waves by waveform shaping circuits 23 and 24, respectively, and these shaped square waves are passed through a phase comparator 25.
The phases are compared with each other, and the phase comparison output company control tube 17
is applied as a control voltage signal to
この例においては狭帯斌阻止ｆ波器１３の中心周波数を
除去しようとする妨害波の周波数にほぼ一致させる操作
はまず手動操作によって行い、その後自動に切替えると
、その狭帯域阻止Ｐ波器の中心周波数が目的の妨害波周
波数に自動的に一致する１９にする。この九め例えば後
段増幅器１４の出力は、可変帯域通過ｒ波器’１６に供
給され、この可変帯域通過ｒ波器２６は比較的通過帯域
幅が広く、この通過中心周波数を制御電圧発生器２７０
制御電圧を変化する仁とＫよって変化するようにされる
。In this example, the center frequency of the narrow band blocking f-wave device 13 is first manually adjusted to almost match the frequency of the interference wave to be removed, and then when the mode is switched to automatic, the narrow band blocking f-wave device 13 is Set the center frequency to 19, which automatically matches the target interference frequency. For example, the output of the second-stage amplifier 14 is supplied to a variable bandpass r-wave generator '16, which has a relatively wide passband width and whose pass center frequency is controlled by a voltage generator 270.
It is made to change by changing the control voltage.
帯域通過ｒ波器２６の出力を指示計２８に供給し、その
指示計２８の振れを見ながら制御電圧を調整すると、目
的とする妨害波が可変帯域通過Ｐ波器２６を通過した時
に、指示計１１８の振れが大龜くなる。仁のことによっ
て帯域通過Ｐ波器２６を妨害波が通過したことを知る。By supplying the output of the bandpass R-wave device 26 to the indicator 28 and adjusting the control voltage while observing the deflection of the indicator 28, when the target interference wave passes through the variable band-pass P-wave device 26, the indicator 28 A total of 118 swings will be large. He learns from Jin that an interference wave has passed through the bandpass P-wave device 26.
この帯域通過Ｐｆｔｌ＠ｚｓの制御電圧に対する通過中
心周波数特性と、狭帯域阻止ｒ波器１３０制御電圧に対
する阻止中心周波数とをほぼ一致させておく。The pass center frequency characteristic of the band pass Pftl@zs with respect to the control voltage is made substantially equal to the stop center frequency with respect to the control voltage of the narrow band stop r wave generator 130.
このようＫして妨害波の周波数に帯竣通過Ｐ波器２６の
中心周波数を一致させた状態において制御電圧発生器１
１７よプの制御電圧をスイッチ２９によ〉狭帯埴阻止Ｐ
波器１３の制御端子１７に与える。この制御電圧によ〕
ｒ波器１３０阻止中心周波数は妨害波周波数とほぼ一致
し、かつ帯域通過ｒ波器２１ 。In this state, the control voltage generator 1
The control voltage of 17 is applied to the switch 29.
It is applied to the control terminal 17 of the wave generator 13. With this control voltage]
The blocking center frequency of the r-wave generator 130 substantially matches the interfering wave frequency, and the band-pass r-wave generator 21.
２２の通過中心周波数と４はぼ一致する。この状態でス
イッチ２９を位相比較器２５の出力側に接続すると、以
下に述べるように１位相比較器２５の出力によって、狭
帯域阻止ｒ波器１３の阻止中心周波数が妨害波周波数に
正確に一致するように自動的に制御される。The passing center frequency of 22 and 4 almost match. In this state, when the switch 29 is connected to the output side of the phase comparator 25, the output of the 1st phase comparator 25 causes the rejection center frequency of the narrowband rejection r-wave generator 13 to accurately match the interference wave frequency, as described below. automatically controlled to do so.
位相比較器２５においてはツリツブフロップ、この例で
はＤタイプフリップフロップ３１．３２が設けられ、こ
れらフリップフロップ３１ 、３２のトリガ端子、つｔ
６クロツク端端子ＫＫ波形整形回路２３ 、２４の出力
方形波が与えられて、例えばその立上、９によりデータ
端子りの信号がそれらフリップフロップ３１．３２に読
み込まれる。この実施例においてはフリップ７０ツブ３
１ 、３２のデータ端子ＤＫは端子３３よシ一方のＭｌ
理レベル、この例では高レベルＨが与えられている。ま
た波形整形回路２３ 、２４の出方はアンド回路３４に
供給されてその論理積がとられ、アンド回路３４の出力
によってツリツブフロップ３１゜３２はクリアされる。The phase comparator 25 is provided with tritubular flip-flops, in this example D-type flip-flops 31 and 32, and the trigger terminals of these flip-flops 31 and 32 are
The output square waves of the 6 clock terminals KK waveform shaping circuits 23 and 24 are applied, and, for example, at the rising edge of the square waves 9, signals from the data terminals are read into the flip-flops 31 and 32. In this embodiment, flip 70 knob 3
The data terminals DK of 1 and 32 are connected to the terminal 33 and Ml of one side.
A logical level, in this example a high level H, is given. Further, the outputs of the waveform shaping circuits 23 and 24 are supplied to an AND circuit 34, where the AND circuit is taken, and the output of the AND circuit 34 clears the tree tube flops 31 and 32.
フリップフロップ３１ 、３２の出力側には抵抗器３５
＆、ダイオード３５ｂの直列回路３５、また抵抗器３６
＆、ダイオード３６ｂの直列回路３６の各一端が、この
例においてはフリップフロップ３１のＱ端子と、ツリツ
ブフロップ３２のＱ端子とにそれぞれ接続され、直列回
路３５ 、３６の他端は互に接続されてコンデンｔ４１
の一端ＫＷ続されると共にスイッチ２９を通じて、制御
端子１７に接続される。コンデン？４１の他端は接地さ
れる。A resistor 35 is connected to the output side of the flip-flops 31 and 32.
&, a series circuit 35 of a diode 35b, and a resistor 36
&, each one end of the series circuit 36 of the diode 36b is connected to the Q terminal of the flip-flop 31 and the Q terminal of the flip-flop 32, respectively, and the other ends of the series circuits 35 and 36 are connected to each other. conden t41
One end is connected to the control terminal 17 through the switch 29. Condensed? The other end of 41 is grounded.
狭帯域阻止ｒ波器１３は例えば第２ＷＪの一線４２とし
て示すようにその阻止中心周波数／ｅＫ対してＩｆだけ
＾い側においては急に位相がＯよ）９０＠迩み、逆にノ
ｆだけ低い側においでは急Ｋ ９０＠だけ位相が遅れる
ような位相周波数特性を持っている。一方帯竣過過ｒ波
器２１ 、２２ 、１６は例えばコンデンサ及びコイル
よ〕成る単峰同調ｍｓ路で構成され、その位相周波数特
性は第２図の破線４３のように中心周波数ｌ・より低い
側で進む位相、鳥い儒で遅れ位相となるが、その位相変
化は徐々である。従って中心周波数±Ａｆｔ）範囲内に
おいては帯竣通過Ｐ波器２１ 、２２の出力信号の位相
差は挾帯域阻止Ｐ波器１３の特性−１１１４２によって
ほは決定される。For example, as shown by the line 42 of the second WJ, the narrow-band blocking R-wave filter 13 suddenly changes the phase by If on the side that is higher than its blocking center frequency /eK by 0)90@, and conversely by Nof. On the low side, it has a phase frequency characteristic in which the phase is suddenly delayed by K90@. On the other hand, the band passband transducers 21, 22, and 16 are composed of single-peak tuned MS paths consisting of, for example, capacitors and coils, and their phase frequency characteristics are lower than the center frequency l, as indicated by the broken line 43 in FIG. The phase advances on the side, and the phase lags on the side, but the phase change is gradual. Therefore, within the range of center frequency ±Aft), the phase difference between the output signals of the band passing P-wave generators 21 and 22 is determined by the characteristic -11142 of the band-stopping P-wave generator 13.
今、仮に狭帯域阻止ｆ波器１３の阻止中心周波数ｆ・に
対して目的の妨害波の周波数ｆｎが高い場合においては
ｆ波器１３０入力に対してｒ波器１３の出力は進んだ位
相となり、第３図Ａ、ＢＯ時点ｔ！に示すような波形が
波形整形回路２３ 、２４よシそれぞれ得られる。仁の
両者が共に高レベルである間アンド回路３４の出力は第
３図Ｃに示すように高レベルとなって７リツプフロツグ
３１ 、３２はクリアされている。時点ｔ１よ多制御が
開始されると、この例においては波形整形回路２４の出
力（第３図のＢ）の位相が進んでいる丸めその立上シに
よって時点ｔｓにフリップ７０ツブ３２のＱ出力が高レ
ベルとなり、その後波形整形回路２３よりの出力方形波
（第３図Ａ）が時点ｔａＫ立上るとアンド回路３４の出
力は第３図ＣＫ示すように高レベルとなって７リツプフ
ロツプ３１ 、３２は共にクリアされる。従ってこの時
点ｉｓよりｔ４の間だけ第３図ＥＫ示すようにツリツブ
フロップ３２のＱ出力が高レベルとなってダイオード３
６ｂが導通し、抵抗器３６ｍを通じてコンデンサ４１に
対する充電が行われ、この充電時点は抵抗器３６＆、コ
ンデンサ４１で決壕シ、コンデンサ４１の電圧（第３図
Ｆ）は徐々に上昇する。Now, if the frequency fn of the target interference wave is higher than the blocking center frequency f of the narrow band blocking f-wave device 13, the output of the r-wave device 13 will be in phase with respect to the input of the f-wave device 130. , Figure 3A, BO time t! The waveforms shown in FIG. 1 are obtained by the waveform shaping circuits 23 and 24, respectively. While both input and output signals are at a high level, the output of the AND circuit 34 is at a high level as shown in FIG. 3C, and the 7 lipfrogs 31 and 32 are cleared. When the multi-control is started at time t1, in this example, the phase of the output of the waveform shaping circuit 24 (B in FIG. 3) is advanced. becomes a high level, and then when the output square wave from the waveform shaping circuit 23 (A in FIG. 3) rises at time taK, the output of the AND circuit 34 becomes a high level as shown in FIG. are cleared together. Therefore, as shown in FIG. 3EK, the Q output of the tree tube flop 32 becomes high level only during t4 from this point is, and the diode 3
6b becomes conductive, and the capacitor 41 is charged through the resistor 36m. At this charging point, the resistor 36 & and the capacitor 41 are connected, and the voltage of the capacitor 41 (FIG. 3F) gradually rises.
このようにして仁のコンデンサ４１の電圧上昇によって
狭帯域阻止ｒ波器１３の中心周波数が高くなるように制
御され、第３図ＦＫ示すようにダイオード３６ｂが導通
する期間が徐々に小さくなって狭帯域阻止Ｐ波器１３の
中心周波数ｆ・が妨害波の周波数Ｉｎに近づいて両者が
一致すると第３図の時点１゜に示すように波形ＩＩ形形
路路３ 、２４の出力波形が同位相となっている。従っ
てコンデンサ４１に対する充放電が行われない。In this way, the center frequency of the narrowband blocking r-wavelength filter 13 is controlled to be high due to the voltage increase of the capacitor 41, and as shown in FIG. When the center frequency f of the band-elimination P-wave device 13 approaches the frequency In of the interference wave and they match, the output waveforms of the waveform II-shaped paths 3 and 24 are in phase, as shown at time 1° in FIG. It becomes. Therefore, the capacitor 41 is not charged or discharged.
しかしＰ波器１３の中心周波数ｆ・が妨害波周波数１ｎ
ＬＤ％為くなると、第３図の時点ｔ＠に示すように波形
整形回路２３の出力は波形整形回路２４の出力よりも進
み位相となり、従ってこの場合Ｋｓ？いては７リツプフ
ロツプ３２ではなくフリップフロップ３１が先にトリガ
されて第３図ＤＫ示すようにフリップフロップ３１のＱ
出力は低レベルとなる。仁の低レベルの期間はダイオー
ド３５ｂが導通してゴンデン？４１の電圧が第３図ＦＫ
示すように放電し、狭帯域阻止１波器１３の中心周波数
ｆ・が徐々に低くなって妨害波周波数ｆｎと一致するよ
うＫなる。However, the center frequency f of the P-wave device 13 is the interference wave frequency 1n.
When LD% increases, the output of the waveform shaping circuit 23 leads in phase to the output of the waveform shaping circuit 24, as shown at time t@ in FIG. 3, so in this case, Ks? In this case, the flip-flop 31 is triggered first instead of the flip-flop 32, and the Q of the flip-flop 31 is triggered as shown in FIG.
The output will be at a low level. During the low level period of jin, diode 35b is conductive and gonden? 41 voltage is shown in Figure 3 FK
As shown, the discharge occurs, and the center frequency f of the narrow band rejection single wave filter 13 gradually decreases to K to match the interference wave frequency fn.
以上のようにしてこの発明による妨害波除去装置によれ
ば位相比較器２５の出力により、狭帯域阻止１波器１３
の中心周波数を妨害波の周波数に自動的に一致し、従っ
て熟練を要する中心周波数ｆ・の―整を手動で時間をか
けて行う必要はない。しかもその位相比較器２５のフリ
ップフロップ３１ 、３２、アンド回路３４としては極
めてありふれ九市販品を使用することができ、かつ確実
に狭帯域阻止ｒ波器１３の中心周波数ｆ・が妨害波周波
数ｆｎに一致するとフリップフロップ３１は高レベル、
フリップフロップ３２の出力は低レベルのｉｔで躯９４
ダイオード３５ｂ 、 ３６ｂは共に不導通状態を継続
してコンデサ４１の電荷はその１１保持され、つまり狭
帯域阻止１波器１３に対する制御電圧は一定に保持され
る。As described above, according to the interference wave removal device according to the present invention, the output of the phase comparator 25 allows the narrow band rejection single wave filter 13 to
The center frequency of f automatically matches the frequency of the interfering wave, so there is no need to manually and time-consumingly adjust the center frequency f, which requires skill. Moreover, extremely common commercially available products can be used as the flip-flops 31, 32 and the AND circuit 34 of the phase comparator 25, and it is ensured that the center frequency f of the narrow band rejection r-wave device 13 is set to the interference wave frequency fn. If it matches, the flip-flop 31 goes to high level,
The output of the flip-flop 32 is 94 at a low level.
Both the diodes 35b and 36b continue to be non-conductive, and the charge on the capacitor 41 is held at 11, that is, the control voltage for the narrowband rejection single wave generator 13 is held constant.
尚、必要に応じてコンデンサ４１の電圧線増幅あるイハ
反転、またはし、ベルシフトなどの回路を通じて端子１
７に供給するようにしてもよい。If necessary, the terminal 1 can be connected to the terminal 1 through a circuit such as voltage line amplification, inversion, bell shift, etc. of the capacitor 41.
7 may be supplied.
第１図に示した位相比較器２５において、もし波形整形
回路２３ 、２４の出力が、入力信号が例えば極端に大
きくなったシして、第４図Ａ、ＢＫ示すように互に一致
する期間がないようＫなるとアンド回路３４の出力は低
レベルのｔｔであって、ツリツブ７０ツブ３１ 、３２
はクリアされない。従ってこの場合トリガにより７リツ
プフ四ツブ３１のζ出カバ第４図りに示すように低レベ
ルとなつ九ｔまとな９、かつフリップフロップ３２のＱ
出力は第４図Ｅに示すように高レベルになつ′＃−１ま
となる。このためコンデンサ４１の電圧は高レベルと低
レベルの中間の値とな９、狭帯域阻止ｒ波器１３の阻止
中心周波数ｆ・は制御ａＦｔＩＵの中心に位置してしま
う。この様な場合例えばロランＣ受信機においてロラン
Ｃ受信機の受信周波数の中心と狭帯域阻止Ｃ波器１３の
中心周波数とが一致する恐れがあり、得ようとする信号
周波数に対し狭帯域阻止ｆ波器１３が影響を与える恐れ
がある。In the phase comparator 25 shown in FIG. 1, if the outputs of the waveform shaping circuits 23 and 24 coincide with each other for a period of time as shown in FIG. When the output of the AND circuit 34 is at a low level tt, the output of the AND circuit 34 is tt, and the output of the AND circuit 34 is tt.
is not cleared. Therefore, in this case, due to the trigger, the ζ output cover of the flip-flop 31 becomes a low level as shown in the fourth diagram, and the Q of the flip-flop 32 becomes low.
The output becomes high level '#-1' as shown in FIG. 4E. Therefore, the voltage of the capacitor 41 becomes an intermediate value between the high level and the low level 9, and the blocking center frequency f of the narrow band blocking r wave generator 13 is located at the center of the control aFtIU. In such a case, for example, in a Loran C receiver, the center of the reception frequency of the Loran C receiver and the center frequency of the narrowband rejection C wave generator 13 may coincide, and the narrowband rejection f for the signal frequency to be obtained may occur. There is a possibility that the wave transmitter 13 may have an influence.
この様な問題を解決するためには例えば第５図に８Ｉ！
１図と対応する部分に同一符号をつけて示すようにフリ
ップフロップ３１ＯＱ出力端子を７リツプフロツプ３２
のデータ端子りに接続し、７リツプフロツプ３２の回出
力端子をフリップ７０ツブ３１のデータ端子りに接続し
、いわゆるたすき掛は接続とすればよい。この場合にお
いてはフリップフロップ３１ 、３２の一方、
例えばフリップフロップ３１が先にトリ
ガされるとその回出力は高レベルとなってこれがフリッ
プフロップ３２のデータ端子りに与えられているため、
次に７リツプフロツプ３２がトリガされたときくフリッ
プフロップ３２のＱ出力は低レベルとなる。このように
してフリップフロップ３１．３２は共に低レベル、或は
共に高レベルとなる。よって、コンデンサ４１の電圧は
低レベルあるいは高レベルに保持された状態となり、狭
帯域阻止ｒ波器１３の中心周波数はその制御範囲の低い
方をまたは高い方のはじに制御される。従って狭帯域阻
止ｒ波器１３によシ目的の受信信号が影響される恐れは
ない。To solve this kind of problem, for example, 8I! shown in Figure 5!
As shown by assigning the same reference numerals to the parts corresponding to those in Figure 1, the output terminal of the flip-flop 31 is connected to the output terminal of the flip-flop 32.
The output terminal of the flip-flop 32 is connected to the data terminal of the flip-flop 31, so that a so-called cross-connection can be used. In this case, one of the flip-flops 31 and 32,
For example, when the flip-flop 31 is triggered first, its output becomes high level and is applied to the data terminal of the flip-flop 32.
Next, when the 7 flip-flop 32 is triggered, the Q output of the flip-flop 32 goes low. In this way, flip-flops 31, 32 are either both low or both high. Therefore, the voltage of the capacitor 41 is maintained at a low level or a high level, and the center frequency of the narrowband rejection r wave generator 13 is controlled to the lower end or the higher end of its control range. Therefore, there is no possibility that the intended reception signal will be affected by the narrow band rejection r-wave filter 13.
上述ではフリップフロップ３１ 、３２としてＤタイプ
フリップフロップを用いたがＪＫフリップフロップを用
いてもよい。その例を第６図に第１図、第５図と対応す
る部分に同一符号を付けて説明は省略する。さらに狭帯
域阻止Ｐ波器１３としては、例えば第７図に示すように
阻止中心周波数ｆ・の入出力の位相差は１８０＠であ）
、それより低い側では愈ＫＯ＠となり高い側で急Ｋ ３
６０＠となるように急激に変化するものもあり、ＣＯ狭
帯域阻止Ｐ波器を用いることもで龜る。また上述におい
て社第１１！！！１０入力端子１１よ多出力端子ＩＳＯ
間において狭帯域阻止Ｐ波器１３を１個用い九が、複数
個の狭帯域阻止ｆ波器を用いてもよく、その複数個Ｏ狭
帯域阻止ｆ波器の各阻止中心周波数をそれぞれ異なる妨
害波の周波数に一致させるようにすることもできる。In the above description, D-type flip-flops are used as the flip-flops 31 and 32, but JK flip-flops may also be used. An example of this is shown in FIG. 6, where parts corresponding to those in FIGS. 1 and 5 are given the same reference numerals, and their explanation will be omitted. Furthermore, as for the narrow band blocking P-wave device 13, for example, as shown in FIG. 7, the phase difference between the input and output of the blocking center frequency f is 180 @).
, on the lower side it becomes Yu KO @ and on the higher side it becomes sudden K 3
There are cases where the value changes rapidly, such as 60 @, which makes it difficult to use a CO narrow band blocking P-wave device. Also, in the above, the company 11th! ! ! 10 input terminals 11 and multiple output terminals ISO
In addition to using one narrowband blocking F-wave device 13 between them, a plurality of narrowband blocking F-wave devices may be used, and each of the plurality of O narrowband blocking F-wave devices has a different interference center frequency. It can also be made to match the frequency of the waves.
その場合位相比較器２５を兼用して、その得られ九制御
電圧を各狭帯域阻止Ｐ波器の制御電圧に保持回路を通し
て供給するようにすればよい。ｔｉ狭帯域阻止ｒ波器の
挿入は入力端子１１と出力端子１５との間のいずれの位
置くおいてもよい。In that case, the phase comparator 25 may also be used, and the obtained nine control voltages may be supplied to the control voltages of each narrowband blocking P-wave device through a holding circuit. The ti narrow band rejection r wave filter may be inserted at any position between the input terminal 11 and the output terminal 15.
＠１図はこの発明による妨害波除去装置の一例を示すブ
ロック図、第２図はその狭帯竣阻止ｒ波器の位相周波数
特性図、第３図は第１図の動作の説明に供するための図
、第４図はその特殊な状襲を説明するための図、第５図
及び第６図はそれぞれ位相比較器の他の例を示す図、第
７図は狭帯斌阻止ｆ波器の他の例の位相周波数特性図で
ある。
１１：入力端子、１２，１４：増幅器、１５：出力端子
、１３：狭帯域阻止ｆ波器、１７：制御端子、２１ 、
２２ ：帯積通過ｒ波器、２３，２４：波形整形回路、
２５：位相比較器、３１，３２：フリッププロップ、３
４：アンド回路。
特許出願人 株式会社 光電製作所代理人 革野
卓
（０） （Ｊ ０ＬＬＩＬし
くのＯＬＬＪ ＬＬ
手続補正書（自発）
昭和５８年４月１ 日
１、事件の表示 ％願昭５７−５０６４９２、発明の
名称 妨害波除去装置
３、袖ＩＥをする者
事件との関係 特許出願人
株式会社光電製作所
４代 理 人 東京都新宿区新宿４−２−２１ 相
撲ビル６補正の内容
（１）％許請求の範囲を別紙の如く訂正する。
（２） 明細書中筒１０頁２０行「２の充電時点は抵
抗」を「この充電時定数は抵抗」と訂正する。
（３） 同書第１１頁２行「に上昇する。」の次に下記
を加入する。
「なお第１図に示していないが位相比較器２５の出力側
とスイッチ２９との間に極性反転回路が挿入されている
。」
（４）回書第１４頁７行「出力は高レベル」を「出力は
低レベル」と訂正する。
以 上
特許請求の範囲
（１） 受（Ｄ ’ｊｒｈ ４通路に直列に挿入され
、制御電圧によって１」１止周波数が変化される狭帯域
阻止沖波器と、その狭帯域阻止Ｐ波器の入力側及び出力
側にそれぞれ分岐接続され、その狭帯域阻止ｐ波器の１
≦１１ ＋Ｉ−，周波数とはソ等しい通過中心周波数を
持ち、かつ０−１波特性が互にはソ等しい第１及び第２
帯域ｉｌｌ過０・波器と、これ等第１．第２帯域通過沖
波器の出力を方形波に波形整形する第１．第２波形整形
回路と、これら第１．第２波形整形回路の出力の論」４
１１積をとるアンド回路と、上記第１．第２波１１φ整
形回路の出力がそれぞれトリガ端子に与えら７し、十ｖ
己アンド回路の出力がクリア端子に与えら７１、少なく
とも初期状態で一方の論理レベルが与えら７）る７ｅｌ
、ｉ％２フリップフロップと、抵抗器及びタイオードの
直列接続より成り、そのダイオ−１・゛はｑに逆極性の
ものがそれぞれ第１．第２フリツプ７０ツフ側とされて
一端がそれぞれ接続さ７１／こ、’４，１． ｌ、第２
直列Ｎ路と、その第１．第２直列回路の他端と接地との
間に接続され、充電さねた′重圧を上記狭帯域阻止沖波
器に制御電圧として与えるコンデンサとより成る妨害波
除去装置。@ Figure 1 is a block diagram showing an example of an interference wave removal device according to the present invention, Figure 2 is a phase frequency characteristic diagram of the narrow band end blocking R wave filter, and Figure 3 is for explaining the operation of Figure 1. Figure 4 is a diagram for explaining the special situation, Figures 5 and 6 are diagrams showing other examples of the phase comparator, and Figure 7 is a narrow band break-stopping f-wave device. FIG. 3 is a phase frequency characteristic diagram of another example of . 11: input terminal, 12, 14: amplifier, 15: output terminal, 13: narrowband blocking f-wave device, 17: control terminal, 21,
22: band product passing r wave device, 23, 24: waveform shaping circuit,
25: Phase comparator, 31, 32: Flip flop, 3
4: AND circuit. Patent applicant Koden Seisakusho Co., Ltd. Agent Kakino
Taku (0) (J 0LLIL Shikino OLLJ LL Procedural amendment (voluntary) April 1, 1980 1, Display of case % Application No. 57-506492, Title of invention Interference wave removal device 3, person who performs sleeve IE Relationship to the case Patent applicant Koden Seisakusho Co., Ltd. 4th Representative Manager 4-2-21 Shinjuku, Shinjuku-ku, Tokyo Contents of Sumo Building 6 Amendment (1) The scope of the claims is amended as shown in the attached sheet. (2) Details On page 10 of the same book, line 20, ``The charging point in 2 is resistance'' is corrected to ``this charging time constant is resistance.'' (3) Add the following after ``rises to.'' on page 11, line 2 of the same book. ``Although not shown in Figure 1, a polarity inversion circuit is inserted between the output side of the phase comparator 25 and the switch 29.'' (4) Circular, page 14, line 7 ``The output is at a high level.'''' should be corrected to ``The output is at a low level.'' Claims (1) A narrow-band rejection off-shore wave that is inserted in series in 4 receiving (D'jrh) paths and whose stop frequency is changed by a control voltage. branch-connected to the input side and output side of the narrowband blocking P-wave device, respectively, and one of the narrowband blocking P-wave devices.
≦11 +I-, the first and second waves have a passing center frequency that is equal to the frequency, and the 0-1 wave characteristics are equal to each other.
Band illumination wave device, these are the first. The first step is to shape the output of the second bandpass transducer into a square wave. a second waveform shaping circuit; Theory of the output of the second waveform shaping circuit” 4
11 products, and the above-mentioned 1. The output of the second wave 11φ shaping circuit is applied to the trigger terminal, respectively, and
When the output of the self-AND circuit is given to the clear terminal 71, one logic level is given at least in the initial state 7) 7el
, i%2 flip-flops, resistors and diodes connected in series, the diodes 1, 2 and 2 having opposite polarity to q are connected to the first diodes, respectively. The second flip 70 is connected at one end to the second flip side 71/, '4,1. l, second
A series N path and its first . An interference wave removal device comprising a capacitor connected between the other end of the second series circuit and ground, and supplying the charged voltage to the narrowband rejection wave transducer as a control voltage.
Claims (1)
て阻止周波数が変化される狭帯竣阻止ｒ波器と、その挟
帯域阻止Ｐ波器の入力側及び出力１１にそれぞれ分岐接
続され、その狭帯賊阻止ｒ波器の阻止１Ｉｌｌ？ＪＬ数
とはソ等しい通過中心周波数を持ち、かつＰ波特性が互
にはソ等しい第１及び第２帯域通過Ｐ波器と、これ等第
１．第２帯琥通過Ｐ波器の出力を方形波に波形整形する
第１、第２波形蓋形回路と、仁れら第１．第３波形整形
回路の出力の論理積をとるアンド回路と、上記第１．第
２波形整形回路の出力がそれぞれトリガ端子に与えられ
、上記アンド回路の出力がクリア端子に４見られ、少な
くとも初期状態で一方の論理レベルが与えられる第１．
第２アリツブフロツプと、抵抗器及びダイオードの直列
接続よプ成り、そのダイオードは互に逆極性の賜のがそ
れぞれ第１．第２フリツプフロツプとされて一端がそれ
ぞれ接続され要用１．第２直列回路と、その第１．第２
直列回路の他端と接地との間に接続され、充電され圧電
圧を上記狭帯埴阻止ｒ波器に制御電圧として与えるコン
デンサとより成る妨害波除去装置。(1) A narrowband end-stopping R-wave device inserted in series in the reception signal path and whose stopping frequency is changed by a control voltage, and branch-connected to the input side and output 11 of the narrow-band stoppage P-wave device, respectively. Narrowband bandit blocking R wave device blocking 1Ill? First and second band-pass P-wave devices having pass center frequencies equal to the JL number and having equal P-wave characteristics; First and second waveform lid-shaped circuits that waveform-shape the output of the second band passing P-wave device into a square wave; an AND circuit that takes the logical product of the outputs of the third waveform shaping circuit; The outputs of the second waveform shaping circuits are respectively given to the trigger terminals, the outputs of the AND circuits are given to the clear terminals, and one logic level is given at least in the initial state.
It consists of a series connection of a second Aritz flop, a resistor, and a diode, the diodes having opposite polarities to the first and second flops, respectively. The second flip-flop is connected at one end to the other. a second series circuit; Second
An interference wave removal device comprising a capacitor connected between the other end of the series circuit and ground, and supplying a charged piezoelectric voltage to the narrow band blocking r-wave device as a control voltage.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5064982A JPS58168334A (en) | 1982-03-29 | 1982-03-29 | Eliminating device of interference wave |
| CA000423623A CA1188760A (en) | 1982-03-29 | 1983-03-15 | Apparatus for rejecting jamming waves |
| NO830937A NO157560C (en) | 1982-03-29 | 1983-03-16 | DEVICE FOR DISPOSAL OF INTERRUPTIONS. |
| DK122883A DK122883A (en) | 1982-03-29 | 1983-03-17 | DEVICE FOR REJECTING A NOISE |
| US06/477,548 US4584580A (en) | 1982-03-29 | 1983-03-21 | Apparatus for rejecting jamming waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5064982A JPS58168334A (en) | 1982-03-29 | 1982-03-29 | Eliminating device of interference wave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58168334A true JPS58168334A (en) | 1983-10-04 |
| JPS6336165B2 JPS6336165B2 (en) | 1988-07-19 |
Family
ID=12864781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5064982A Granted JPS58168334A (en) | 1982-03-29 | 1982-03-29 | Eliminating device of interference wave |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58168334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9522239B2 (en) | 2008-09-18 | 2016-12-20 | Becton, Dickinson And Company | Medical injector with ratcheting plunger |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0425449U (en) * | 1990-06-25 | 1992-02-28 |
-
1982
- 1982-03-29 JP JP5064982A patent/JPS58168334A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9522239B2 (en) | 2008-09-18 | 2016-12-20 | Becton, Dickinson And Company | Medical injector with ratcheting plunger |
| US10143807B2 (en) | 2008-09-18 | 2018-12-04 | Becton, Dickinson And Company | Medical injector with ratcheting plunger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6336165B2 (en) | 1988-07-19 |
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