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公开(公告)号：US07362182B2
公开(公告)日：2008-04-22
申请号：US11216923
申请日：2005-08-31
CPC分类号： H03F3/211 , G01R33/3614 , G01R33/441 , H03F3/217 , H03F3/68 , H03F2200/541 , H03F2203/21142 , H03F2203/21145 , H03F2203/21175
摘要： A radio frequency power amplifier including control electronics for providing control signals for timing of the power amplifier. A first group of the drivers are coupled to the control electronics and a second group of drivers are coupled to the control electronics. The first group of drivers operate in response to the control signals to generate first drive signals and the second group of drivers operate in response to the control signals to generate second drive signals with a phase difference of 180° relative to the first drive signals. A first group of switches energize a first group of primary windings in response to the first drive signals and a second group of switches energize a second group of primary windings in response to the second drive signals. An output summing transformer has a plurality of ferrite cores, the first group of primary windings and the second group of primary windings passing through the ferrite cores. A secondary output winding for connection with a load passes through the ferrite cores of the output summing transformer.
摘要翻译： 一种射频功率放大器，包括用于为功率放大器的定时提供控制信号的控制电子装置。 第一组驱动器耦合到控制电子装置，第二组驱动器耦合到控制电子装置。 第一组驱动器响应于控制信号操作以产生第一驱动信号，并且第二组驱动器响应于控制信号而工作，以产生相对于第一驱动信号相位差为180°的第二驱动信号。 第一组开关响应于第一驱动信号而激励第一组初级绕组，而第二组开关响应于第二驱动信号而激励第二组初级绕组。 输出求和变压器具有多个铁氧体磁芯，第一组初级绕组和第二组初级绕组通过铁氧体磁芯。 用于与负载连接的次级输出绕组通过输出求和变压器的铁氧体磁芯。
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公开(公告)号：US5797845A
公开(公告)日：1998-08-25
申请号：US742403
申请日：1996-11-04
CPC分类号： G01S15/8925 , A61B8/14 , A61B8/145 , A61B8/4281 , B06B1/0622 , A61B8/483 , G01S15/8922 , G01S15/8993 , Y10S128/916
摘要： This invention employs an ultrasound apparatus with a phased transducer having transmit and receive array systems to form an electronically scanned ultrasonic "pencil" beam (25) from crossed flat acoustic beams. The flat transmit beams and flat receive apertures are shaped by the arrays with size of individual elements on the order of the wavelength of a generated carrier frequency in a human body. The separation of array functions in the transmission and reception modes reducess the side lobe level and improves the noise performance. A fast method of acquisition of two dimensional images is described. This method uses a property of a dynamic focused and scanned flat acoustic beam together with the ability to shape flat synthetic receive apertures from digitized and memorized amplitude information. The same fast method of three dimensional image reconstruction is suggested, which uses an unfocused acoustic beam generated by a single transducer element together with the ability to form flat synthetic receive apertures in memory.
摘要翻译： 本发明采用超声波装置，其具有带有发射和接收阵列系统的定相换能器，以从交叉的平面声束形成电子扫描的超声波“铅笔”束（25）。 扁平发射光束和平坦的接收孔径由具有在人体内产生的载波频率的波长数量级的各个元件的尺寸的阵列成形。 发射和接收模式下阵列功能的分离减少了旁瓣电平，提高了噪声性能。 描述了获取二维图像的快速方法。 该方法使用动态聚焦和扫描的平面声束的特性以及从数字化和存储的振幅信息形成平坦的合成接收孔的能力。 提出了三维图像重构相同的快速方法，其使用由单个换能器元件产生的未聚焦的声束以及在存储器中形成平坦的合成接收孔的能力。
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公开(公告)号：US6138513A
公开(公告)日：2000-10-31
申请号：US228028
申请日：1999-01-09
CPC分类号： G01S7/52047 , A61B8/483 , G01S7/5208 , G01S15/102 , G01S15/8952 , Y10S367/905
摘要： New apodization functions providing an effective rejection of side lobe amplitude level within wide range of beam steering angles are described in this invention. A central amplitude apodization function (13) reduces amplitudes for the central section of transmit and receive array individual elements. A time apodization function (14) changes a duration of transmit pulses. A duration of transmit pulses is short for central section of transmit array and increases for outlying transmit individual elements. A frequency apodization function (15) changes frequency of transmit pulses for different transmit individual elements. The use of new apodization function allows realization of portable acoustic scanners. Some versions of a portable acoustic scanner design and a version with time compression of echo signals are described.
摘要翻译： 在本发明中描述了在宽范围的波束转向角内提供有效抑制旁瓣振幅水平的新的变迹功能。 中心振幅变迹函数（13）减小发射和接收阵列单个元件的中心部分的振幅。 时间变迹函数（14）改变发射脉冲的持续时间。 发射脉冲的持续时间对于发射阵列的中心部分是短的，并且对于偏离的传输单个元件而言增加。 频率变迹函数（15）改变不同发射单个元件的发射脉冲的频率。 使用新的变迹功能可实现便携式声学扫描仪。 描述了便携式声学扫描仪设计的一些版本和具有回波信号的时间压缩的版本。
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4.发明授权Ultrasound transducers for real time two and three dimensional image acquisition 有权超声换能器用于实时二维和三维图像采集公开(公告)号：US06352510B1
公开(公告)日：2002-03-05
申请号：US09599268
申请日：2000-06-22
IPC分类号： A61B800
CPC分类号： A61B8/145 , A61B8/14 , A61B8/4483 , A61B8/483 , B06B1/0622 , B06B1/0692 , G01S15/8925 , G01S15/8927 , G10K11/34 , Y10S128/916
摘要： A present invention shows some schemes of a cross transducer with one transmit and one receive array for the three dimensional image acquisition. Designs of the cross transducer with and without a central shared element are described. Conditions for an extension of a frequency range and the method of an extended frequency range for use of the cross transducer are suggested. A new method of image formation allowed by the above is also presented.
摘要翻译： 本发明示出了用于三维图像采集的具有一个发送和一个接收阵列的交叉换能器的一些方案。 描述具有和不具有中央共享元件的十字换能器的设计。 建议使用频率范围的扩展条件和交叉传感器使用的扩展频率范围的方法。 还提出了上述允许的新的图像形成方法。
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5.发明授权Method and ultrasound apparatus for fast acquisition of two dimensional images 失效用于快速获取二维图像的方法和超声仪器
公开(公告)号：US5860926A
公开(公告)日：1999-01-19
申请号：US910485
申请日：1997-07-25
CPC分类号： G01S15/8925 , G01S15/8997 , A61B8/483
摘要： The present invention consists of a method for a fast acquisition of two dimensional images by the use of synthetic transmit and receive apertures formed in the schematics with cross transducers and can be used for the reconstruction of three dimensional images. The method of a fast two dimensional image acquisition preserves the flat beam generation and irradiation of the sector of an investigated part of a human body by a single transmit array. Simultaneously, a switching of transmit (or receive) arrays and irradiation of the same sector of a human body by different transmit arrays with a consequent fine shifting and summation of the received and digitized information in the region of interest provides an additional focusing of the transmit (or receive) beam along the coordinate parallel to the flat beam plane. The schematics of transducers for the realization of this method are described. The suggested method works with digital beamformer schematics, when echo signals from every individual element of the receive arrays are amplified, digitized and stored in memory.
摘要翻译： 本发明由用于通过使用在交叉换能器中形成的合成发射和接收孔的快速获取二维图像的方法组成，并且可用于重建三维图像。 快速二维图像采集的方法通过单个发射阵列保留人体的被调查部分的平面光束产生和照射。 同时，通过不同发射阵列的发射（或接收）阵列的切换和人体的相同扇区的照射，在感兴趣的区域中接收和数字化的信息的微小的移位和相加提供了传输的附加的聚焦 （或接收）光束沿平行于平面光束平面的坐标。 描述了用于实现该方法的换能器的示意图。 当接收阵列的每个单独元件的回波信号被放大，数字化并存储在存储器中时，建议的方法适用于数字波束形成器原理图。
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公开(公告)号：US5842991A
公开(公告)日：1998-12-01
申请号：US802757
申请日：1997-02-20
申请人： Leonid S. Barabash
发明人： Leonid S. Barabash
IPC分类号： G03B42/06
CPC分类号： G03B42/06
摘要： Presented invention employs an ultrasound transducer that irradiates and receives the echo signals from an investigated part of a human body into a solid angle which is two times larger than for a prior art cross transducer. Preferred embodiment of the transducer has two transmit arrays turned at an angle of .+-..psi./2 out of the plane of the receive array. Transmit arrays form flat acoustic beams to provide the left (17) and right (18) field of views. Transmit and receive arrays are placed normally to each other. The extension of the field of view along the lateral coordinate is provided by a successive energizing of transmit arrays which form flat acoustic beams irradiating different sectors of a human body.
摘要翻译： 本发明采用超声波换能器，其将人体的被调查部分的回波信号照射并接收到比现有技术的交叉换能器大两倍的立体角。 换能器的优选实施例具有以接收阵列的平面+/- psi / 2的角度转动的两个发射阵列。 发射阵列形成平坦声束以提供左（17）和右（18）视场。 发送和接收阵列相互正常放置。 沿横向坐标的视场的延伸通过连续激励发射阵列而提供，该发射阵列形成照射人体不同扇区的平坦声束。
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