CN2653522Y - Resistance phase-shift wave beam forming device - Google Patents
Resistance phase-shift wave beam forming device Download PDFInfo
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- CN2653522Y CN2653522Y CN 03207914 CN03207914U CN2653522Y CN 2653522 Y CN2653522 Y CN 2653522Y CN 03207914 CN03207914 CN 03207914 CN 03207914 U CN03207914 U CN 03207914U CN 2653522 Y CN2653522 Y CN 2653522Y
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Abstract
The utility model relates to a resistance phase shift beam generator that consists of an operational amplifiers and which can realize weighing and near field focus. The utility model comprises a cosine phase shift weighing summation circuit [1] consisting of the operational amplifiers and sine phase shift weighing summation circuit [2], plus 45 degree phase shift circuit [3], minus 45 DEGs phase shift circuit [4] and weighing summation circuit [5].The utility model realizes phase shift, summation and weighing which are all necessary for the beam generator, which makes the circuit design more simple and flexible. The transformer and inductance coil that are used in non regular realizing method makes the utility model reliable and easier to realize miniaturization and integration. The utility model can be used in symmetric lineup multivariant lineup including equidistant or non equidistant straight line lineup and any other shaped multivariant lineup of beam generation.
Description
Technical field
The utility model belongs to a kind of resistance phaseshift Beam-former that operational amplifier is realized of using.
Background technology
In the reception and processing of underwater sound signal, in order to carry out high-precision resolution, improve signal to noise ratio (S/N ratio) simultaneously to target in the water, wave beam formation system occupies important status.Militarily, Beam-former can be used in all sonars that need certain directive property, as hunt, clearance sonar and other visual sonar etc.What at present, the resistance phaseshift preformation Beam-former that uses both at home and abroad adopted is that traditional resistance phaseshift multi-beam forms device.It except will calculating sine, cosine weighting resistance, also will consider build-out resistor, featured resistance and pull-up resistor when design; When calculating weighting resistor and run into resistance and be negative value, must utilize the secondary mutual inductor that center tap ground connection is arranged, input is divided into homophase and the addition respectively again of anti-phase two kinds of signals.The shortcoming of the Beam-former that this method realizes is that it is complicated that its circuit design becomes, and have the reliability variation that telefault makes circuit.
Summary of the invention
The purpose of this utility model is the shortcoming for circuit complexity, design complexity and the poor reliability that overcomes traditional resistance phaseshift multi-beam formation device existence, provide a kind of circuit design simple, flexible, working stability is reliable, and is easy to miniaturization and integrated resistance phaseshift Beam-former.This Beam-former can form the far field wave beam, also can form the focus beam near field.
The sinusoidal phase shift weighted sum circuit [2] that formation of the present utility model mainly is the cosine phase shift weighted sum circuit [1] realized of operational amplifier, operational amplifier is realized ,+45 ° of phase-shift circuits [3] and-45 ° of phase-shift circuits [4], addition summing circuit [5].Wherein the effect of circuit [1] and [2] is to realize cosine and sinusoidal phase shift weighted sum computing in the computing formula respectively; The effect of circuit [3] and [4] is the calculating that realizes 90 ° of phase differential between the sinusoidal phase shift weighting of cosine phase shift weighted sum, and the purpose that adopts ± 45 ° of phase-shift circuits [3], [4] is to make 90 ° of phase-shift circuit constitutional balances; The function of circuit [5] is each primitive x with acoustic array [6]
1(t), x
2(t) ..., x
N(t) signal that receives carries out carrying out summation operation after phase shift, the weighting.And cosine phase shift weighted sum circuit [1] is made up of operational amplifier [7], [8], [11], and sinusoidal phase shift weighted sum circuit [2] is made up of operational amplifier [9], [10], [12].Wherein operational amplifier [7], [8], [9], [10] are reverse ratio totalizers, and 180 ° of phase shift subtraction amplifiers [11] and [12] are with solving the problem that negative value appears in weighting resistor; When the resistance that calculates on the occasion of the time, resistance is connected on operational amplifier [7] and [8] of cosine phase shift weighted sum circuit [1] and sinusoidal phase shift weighted sum circuit [2] respectively; When the resistance value that calculates was negative value, resistance was connected on respectively on the operational amplifier [9] and [10] of cosine phase shift weighted sum circuit [1] and sinusoidal phase shift weighted sum circuit [2].Under the situation of near field, the utility model can form a preformation wave beam (seeing accompanying drawing 2) with 7 operational amplifiers; And under the situation of far field, the utility model can form a preformation wave beam with 7 operational amplifiers, also can form two preformation wave beams (seeing accompanying drawing 3,4,5) simultaneously with 8 amplifiers, 9 amplifiers or 10 amplifiers etc.
In sum, in the circuit design of the present utility model owing to used operational amplifier, the advantage that this Beam-former is possessed is: need not calculate build-out resistor, featured resistance and pull-up resistor, and phase shift, amplitude weighting and near field can be focused in the lump and consider, thereby make circuit become very simple, circuit design is also very convenient, flexible, can realize the wave beam of any direction; Under the condition in far field, the way of realization of circuit is very flexible, and design function can be realized and finish to multiple circuit form all; In addition, do not contain transformer and telefault in the circuit, make it more reliable and more stable, and be easy to miniaturization and integrated.Therefore, the utility model can be used for the polynary battle array of symmetrical formation, comprises that the wave beam of the polynary battle array of equidistant or unequal-interval line array and other arbitrary shape forms.
Description of drawings
The theory diagram of a kind of resistance phaseshift Beam-former of Fig. 1
The basic circuit diagram of a kind of resistance phaseshift Beam-former of Fig. 2
The basic circuit diagram of the optimised form I of a kind of resistance phaseshift Beam-former of Fig. 3
The basic circuit diagram of the optimised form II of a kind of resistance phaseshift Beam-former of Fig. 4
The basic circuit diagram of the general type of a kind of resistance phaseshift Beam-former of Fig. 5
Embodiment
The best way of realization I (seeing accompanying drawing 3) of circuit of the present utility model, in the occasion of far field received signal, circuit can obtain simplifying because with the identical wave beam of basic matrix [6] normal direction left and right sides angle, identical on the weighting resistor numerical value, be sinusoidal phase shift weighting resistor opposite in sign.With in the accompanying drawing 2 ± 45 ° of phase-shift circuits [3] and [4] exchange, just obtain and the identical symmetrical wave beam of basic matrix [6] normal direction angle.Thus, only needing increases by two ± 45 identical with [4] with [3] ° phase-shift circuits [3 '], [4 '] and an addition summing circuit [5 '], finally utilizes one group of weighting resistor and 8 operational amplifiers can form two preformation wave beams simultaneously.
The best way of realization II (seeing accompanying drawing 4) of circuit of the present utility model in the occasion of far field received signal, according to the principle of the best way of realization I of the utility model, can carry out another kind and simplify.Increase-45 ° of phase-shift circuits [4 '] of 180 ° of phase shift subtraction amplifiers [12 '] and an addition summing circuit [5 '] in the circuit of accompanying drawing 2, other circuit is constant.Like this, utilize one group of weighting resistor and 9 operational amplifiers also can form two preformation wave beams simultaneously.
The general way of realization of circuit of the present utility model (seeing accompanying drawing 5), occasion in the far field received signal, can increase by two 180 ° of phase shift adder operational amplifiers [11 '] and [12 '], a pair of ± 45 ° phase-shift circuit [3 '] and [4 '] and an addition summing circuit [5 '] in the circuit of accompanying drawing 2, other circuit remains unchanged.Like this, utilize one group of weighting resistor and 10 operational amplifiers can form two preformation wave beams simultaneously.
The operational amplifier that is adopted in the utility model circuit can design voluntarily, also can select the OP37 model for use, and its Amplifier Gain bandwidth product is that 40MHz, common-mode rejection ratio are 120.
Circuit design of the present utility model utilized operational amplifier reverse ratio adding circuit, subtraction circuit and ± 45 ° of phase-shift circuits, the necessary phase shift of Beam-former, weighting and summation operation have been realized, the circuit design of this Beam-former is become simply, flexibly, way of realization is various, and being easy to miniaturization and integrated, it can realize the near field or the far field wave beam of sensing arbitrarily.
Claims (3)
1. a resistance phaseshift Beam-former is characterized in that it comprises cosine phase shift weighted sum circuit [1] and the sinusoidal phase shift weighted sum circuit [2] that is made of amplifier ,+45 ° of phase-shift circuits [3] ,-45 ° of phase-shift circuits [4], addition summing circuit [5]; And cosine and sinusoidal phase shift weighted sum circuit [1] and [2] receive the signal of acoustic array [6] respectively, and respectively after ± 45 ° of phase-shift circuits [3] and [4] phase shift, their output signal all is input to addition summing circuit [5] to its output signal again.
2. resistance phaseshift Beam-former as claimed in claim 1, the operational amplifier [7], [8], [9], [10] that it is characterized in that forming respectively cosine and sinusoidal phase shift weighted sum circuit [1] and [2] are anti-phase proportional amplifiers, and operational amplifier [11] is 180 ° of phase shift subtracters.
3. as claim 1,2 described resistance phaseshift Beam-formers, it is characterized in that the occasion in the far field received signal, its operational amplifier [11], [12] can be 2,3 or 4; Therefore ± 45 ° of phase-shift circuits [3] and [4] also increase to 1 or 2 respectively, and addition summing circuit [5] also becomes two, make this Beam-former can be with 7 operational amplifiers, also available 8,9 or 10 operational amplifiers compositions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN 03207914 CN2653522Y (en) | 2003-08-25 | 2003-08-25 | Resistance phase-shift wave beam forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN 03207914 CN2653522Y (en) | 2003-08-25 | 2003-08-25 | Resistance phase-shift wave beam forming device |
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CN2653522Y true CN2653522Y (en) | 2004-11-03 |
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CN 03207914 Expired - Fee Related CN2653522Y (en) | 2003-08-25 | 2003-08-25 | Resistance phase-shift wave beam forming device |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101535773B (en) * | 2006-10-05 | 2011-06-15 | 新光电机株式会社 | Displacement sensor |
-
2003
- 2003-08-25 CN CN 03207914 patent/CN2653522Y/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101535773B (en) * | 2006-10-05 | 2011-06-15 | 新光电机株式会社 | Displacement sensor |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |