CN2742453Y

CN2742453Y - Phase control array and its phase control transmitter-receiver set

Info

Publication number: CN2742453Y
Application number: CN 200420063074
Authority: CN
Inventors: 田坦; 卢逢春; 孙大军; 张殿伦; 吕云飞; 樊世斌
Original assignee: Harbin Engineering University
Current assignee: Harbin Engineering University
Priority date: 2004-07-08
Filing date: 2004-07-08
Publication date: 2005-11-23
Anticipated expiration: 2014-07-08

Abstract

The utility model relates to a phase control array and a phase control transmitting and receiving device thereof, which comprises a phase control array, a phase control transmitting circuit and a phase control receiving circuit, wherein, the phase control receiving circuit also comprises an input circuit, a +90 DEG phase shifting circuit and a connecting wire of a 0 DEG shift phase, and a summing circuit; the phase control array is cut into m*m units by crystal ceramic sheets, and every four units are connected by short circuit wires in order to form four axial subarrays. Therefore, one phase control transmitting circuit can have the function of two phase control transmitting wave beams, one phase control receiving circuit set can have the function of two receiving phase control receiving wave beams, and the circuit design becomes simpler and has multiple forms. The utility model is characterized in that no matter how large the unit number is, the phase control transmitting circuit and the phase control receiving circuit can be kept unchanged; the wave beam angles of the two transmitting and receiving wave beams, which are basically fixed, are changed with the change of the sound speed; the system can automatically compensate the change of the sound speed. The utility model can be used in a Doppler speed measuring apparatuses and a Doppler speed log apparatuses.

Description

Phased Array And Phase-controlled R-t Unit

Technical field

The utility model belongs to a kind of Phased Array And Phase-controlled R-t Unit.

Background technology

In sonar peculiar to vessel, wave beam formation system occupies important status.Militarily, Beam-former can be used in all sonars that need certain directive property.It is right that phased array and transmission circuit thereof have constituted a kind of wave beam of particular orientation, is mainly used in the doppler velocity log.At present, what domestic most of doppler velocity logs adopted is the wave beam transmission circuit of non-phased-array technique, and its shortcoming is that the wave beam of a direction needs a transducer and a radiating circuit.This method generally needs 3 to 4 to be in the independently piston shape transducer of certain angle and transmission circuit independently separately, forms required a plurality of directional sound wave bundles.In addition, this method must be carried out velocity of sound correction when being used for the naval vessel velocity survey, otherwise can cause range rate error.

Summary of the invention

The purpose of this utility model is in order to overcome the shortcoming that the basic matrix, the transmission circuit that need a plurality of independent transducers to constitute in traditional doppler velocity log are many and the assurance rate accuracy must be carried out velocity of sound correction, a kind of phased array and R-T unit thereof to be provided.This utility model circuit design is simple, flexible, and working stability is reliable, and only polynary plane basic matrix of need just can form the wave beam of 2 or 4 directions, and in the ship's speed measuring process, the velocity of sound can be compensated automatically by phased receive-transmit system.

Formation of the present utility model mainly is phased array [1], phased radiating circuit [2], phased receiving circuit [3].Wherein phased receiving circuit [3] comprise input circuit [4] ,+connecting line [6], the addition summing circuit [7] of 90 ° of phase-shift circuits [5] and 0 ° of phase shift, and+connecting line [6] of 90 ° of phase-shift circuits [5] and 0 ° of phase shift also can be with+45 ° of phase-shift circuits [5 '] and-45 ° of phase-shift circuits [6 '] realizations.Phased array [1] is to cut into m * m primitive by the crystalline ceramic sheet, connects with short-circuit line every 3 primitives, forms axial 4 submatrix X1, X2, X3, X4; The beam signal that phased radiating circuit [2] produces both direction is transmitted in the water by 4 submatrix X1, X2, X3, X4, the phase shift of the reflected signal that 4 submatrix X1, X2, X3, X4 receive by input circuit [4] and two phase-shift circuits [5], [6], be added on the addition summing circuit [7], the output of two addition summing circuits [7] be respectively an axial forward direction and back to two wave beam wave beam I and wave beam II; Phased radiating circuit [2] can transmit on both direction at an axial forward direction and back simultaneously; The effect of input circuit [4] is to remove to transmit to strong the crosstalking of receiving circuit, the connecting line [6] of+90 ° of phase-shift circuits [5] and 0 ° of phase shift can make 90 ° of required phase-shift circuit constitutional balances with+45 ° of phase-shift circuits and-45 ° of phase-shift circuits [5 '] and [6 '] realization; The function of addition summing circuit [7] is that the signal that 4 submatrixs with phased array [1] receive carries out summation operation after phase shift.And phased array [1] can connect into 4 submatrix X1, X2, X3, the X4 (seeing accompanying drawing 4) of one dimension, also can connect into 8 submatrixs of two dimension, wherein form 4 submatrix X1, X2, X3, X4 on the X-direction, also form 4 submatrix Y1, Y2, Y3, Y4 (seeing accompanying drawing 5) on the Y direction; And,, can form an axial forward direction and back to two wave beams with a cover phased receiving circuit [3] according to 4 submatrixs that the annexation of accompanying drawing 4 forms; And 8 submatrixs that form according to the annexation of accompanying drawing 5 with two cover phased receiving circuits [3], can form two axial forward directions and back 4 wave beams to, left-hand and dextrad respectively; And input circuit [4] can constitute (seeing accompanying drawing 6) by diode, amplifier and subtracter [8], also can constitute (seeing accompanying drawing 7) by diode, amplifier and transformer [8 ']; And radiating circuit [2] can transmit on both direction at an axial forward direction and back simultaneously, can be simultaneously transmits on, left-hand and 4 directions of dextrad at two axial forward directions, back by 10 in accompanying drawing 9 and accompanying drawing.

In sum, owing to adopted phased-array technique, the advantage that this equipment is possessed is: the output of phased array [1] or [1 '] has only 4 or 8 submatrixs, rather than m * m primitive in the circuit design of the present utility model, thereby make circuit become very simple, equipment volume greatly reduces; In addition, two field angle basic fixed that transmit and receive wave beam, and variation to some extent with the variation of the velocity of sound, the system that makes can compensate automatically to the variation of the velocity of sound.The utility model can be applicable on the doppler velocity log, helps improving rate accuracy.

Description of drawings

Fig. 1 Beam-former adopts the Phased Array And Phase-controlled R-t Unit theory diagram of two 90 ° of phase-shift circuits

Fig. 2 Beam-former adopts the Phased Array And Phase-controlled R-t Unit theory diagram of two ± 45 ° of phase-shift circuits

The input circuit of Fig. 3 Phased Array And Phase-controlled R-t Unit connects and schematic diagram

The phased array primitive annexation figure that connects into 4 submatrixs of one dimension of Fig. 4 Phased Array And Phase-controlled R-t Unit

The phased array primitive annexation figure that connects into 8 submatrixs of two dimension of Fig. 5 Phased Array And Phase-controlled R-t Unit

The input circuit of Fig. 6 Phased Array And Phase-controlled R-t Unit adopts the phased receiving circuit figure of subtracter

The input circuit of Fig. 7 Phased Array And Phase-controlled R-t Unit adopts the phased receiving circuit figure of transformer

The phased radiating circuit figure that Fig. 8 Phased Array And Phase-controlled R-t Unit transmits to both direction in an axial forward direction and back

A kind of phased radiating circuit figure that Fig. 9 Phased Array And Phase-controlled R-t Unit transmits in two axial 4 directions simultaneously

The another kind of phased radiating circuit figure that Figure 10 Phased Array And Phase-controlled R-t Unit transmits in two axial 4 directions simultaneously

Embodiment

A kind of circuit way of realization of the present utility model (seeing accompanying drawing 6,8) is overlapped the wave beam that phased receiving circuit [3] can be realized axial 2 directions simultaneously with a phased array [1], a cover phased radiating circuit [2] and.

Another kind of circuit way of realization of the present utility model (seeing accompanying drawing 6,9) is overlapped the wave beam that phased receiving circuits [3] can be realized two axial 4 directions simultaneously with a phased array [1 '], two cover phased radiating circuits [2] or a cover phased radiating circuit [2 '] and two.

The best way of realization (seeing accompanying drawing 6,10) of circuit of the present utility model is overlapped the wave beam that phased receiving circuits [3] can be realized two axial 4 directions simultaneously with a phased array [1 '], the phased radiating circuit of a cover [2 "] and two.

In addition, flexible design of the present utility model, wherein phased array can be [1] (see figure 4), also can be [1 '] (see figure 5); Phased radiating circuit can be [2] (see figure 8), also can be [2 '] (see figure 9), can also be [2 "] (see figure 10).

The operational amplifier that is adopted in the phased receiving circuit of the utility model [3] can design voluntarily, also can select the OP37 model for use, its amplifier index gain bandwidth product 40MHz, common-mode rejection ratio 120; The transistor that adopts is middle power and high power valve, can design voluntarily according to the emissive power of reality; The phased array [1] that adopts or [1 '] are the basic matrix by the processing of Wuxi 721 factories of underwater sound research institute of Harbin Engineering University design.

The utility model has utilized phased-array technique, comprises phased array, phased radiating circuit, phased receiving circuit, the circuit design of this equipment is become simply, flexibly, way of realization is various, the function that also has velocity of sound correction simultaneously, therefore, it can be used as the hardware components of Doppler anemometer.

Claims

1. Phased Array And Phase-controlled R-t Unit, it is characterized in that it comprises phased array [1] and phased radiating circuit [2], phased receiving circuit [3], phased radiating circuit [2] produces the beam signal of both direction by phased array [1] or [1 '], signal is transmitted in the water, and echoed signal is output as the beam signal of both direction through phased array [1], phased receiving circuit [3].

2. Phased Array And Phase-controlled R-t Unit as claimed in claim 1 is characterized in that phased array [1] is to form m * m primitive by the cutting of crystalline ceramic sheet, connects with short-circuit line every 3 primitives, forms axial 4 submatrix X1, X2, X3, X4.

3. Phased Array And Phase-controlled R-t Unit as claimed in claim 1, it is characterized in that can connecting into phased array [1] or [1 '] 4 submatrixs of one dimension or connecting into two-dimentional submatrix, wherein form 4 submatrix X1, X2, X3, X4 on the X-direction, also form 4 submatrix Y1, Y2, Y3, Y4 on the Y direction.

4. Phased Array And Phase-controlled R-t Unit as claimed in claim 1 is characterized in that forming two phased launching beams and forming two phased received beams with a phased receiving circuit of cover [3] with a phased radiating circuit [2]; And no matter the primitive number is much, and its phased radiating circuit [2] and phased receiving circuit [3] can be constant.

5. Phased Array And Phase-controlled R-t Unit as claimed in claim 1, it is characterized in that phased receiving circuit [3] comprises connecting line [6], the addition summing circuit [7] of input circuit [4], 90 ° of phase-shift circuits [5] and 0 ° of phase shift, signal is added on the addition summing circuit [7] through the connecting line [6] of input circuit [4], 90 ° of phase-shift circuits [5] and 0 ° of phase shift, and it is output as the wave beam of both direction.

6. Phased Array And Phase-controlled R-t Unit as claimed in claim 5 is characterized in that input circuit [4] can constitute with addition summing circuit [8] and the diode that amplifier realizes, also can be made of transformer [8 '] and diode.

7. Phased Array And Phase-controlled R-t Unit as claimed in claim 5 is characterized in that the connecting line [6] of 90 ° of phase-shift circuits [5] and 0 ° of phase shift, also can be made up of+45 ° of phase-shift circuits [5 '] and-45 ° of phase-shift circuits [6 '].

8. Phased Array And Phase-controlled R-t Unit as claimed in claim 1, it is characterized in that constituting two axial radiating circuits of X, Y can be two cover phased radiating circuits [2], also can be a cover phased radiating circuit [2 '] or [2 "].