公开(公告)号：US06894529B1

公开(公告)日：2005-05-17

申请号：US10616272

申请日：2003-07-09

申请人： Yew-Keong Chong ,  David J. Klein ,  XinXin Shao ,  Prashant Shamarao ,  Brian K. Butka

发明人： Yew-Keong Chong ,  David J. Klein ,  XinXin Shao ,  Prashant Shamarao ,  Brian K. Butka

IPC分类号： H03K19/00 ,  H03K17/16 ,  H03K19/003

CPC分类号： H03K19/0005

摘要： Impedance-matched output driver circuits include a first totem pole driver stage and a second totem pole driver stage. The first totem pole driver stage includes at least one PMOS pull-up transistor and at least one NMOS pull-down transistor therein that are responsive to a first pull-up signal and a first pull-down signal, respectively. The second totem pole driver stage has at least one NMOS pull-up transistor and at least one PMOS pull-down transistor therein that are responsive to a second pull-up signal and second pull-down signal, respectively. The linearity of the output driver circuit is enhanced by including a first resistive element that extends between the first and second totem pole driver stages. The first resistive element has a first terminal, which is electrically coupled to drain terminals of the at least one PMOS pull-up transistor and the at least one NMOS pull-down transistor in the first totem pole driver stage, and a second terminal, which is electrically coupled to source terminals of the at least one NMOS pull-up transistor and the at least one PMOS pull-down transistor in the second totem pole driver stage.

摘要翻译： 阻抗匹配的输出驱动器电路包括第一图腾柱驱动器级和第二图腾柱驱动级。 第一图腾柱驱动器级包括分别响应于第一上拉信号和第一下拉信号的至少一个PMOS上拉晶体管和至少一个NMOS下拉晶体管。 第二图腾柱驱动器级具有分别响应于第二上拉信号和第二下拉信号的至少一个NMOS上拉晶体管和至少一个PMOS下拉晶体管。 通过包括在第一和第二图腾柱驱动级之间延伸的第一电阻元件来增强输出驱动器电路的线性度。 第一电阻元件具有第一端子，其电耦合到第一图腾柱驱动器级中的至少一个PMOS上拉晶体管的漏极端子和至少一个NMOS下拉晶体管，以及第二端子，其中 电耦合到第二图腾柱驱动级中的至少一个NMOS上拉晶体管的源极端子和至少一个PMOS下拉晶体管。

公开(公告)号：US07123055B1

公开(公告)日：2006-10-17

申请号：US11105237

申请日：2005-04-13

申请人： Yew-Keong Chong ,  David J. Klein ,  Brian K. Butka

发明人： Yew-Keong Chong ,  David J. Klein ,  Brian K. Butka

IPC分类号： H03K19/0175 ,  H03K19/094

CPC分类号： H03K19/0005

摘要： Impedance-matched output driver circuits include a first totem pole driver stage and a second totem pole driver stage. The first totem pole driver stage includes at least one PMOS pull-up transistor and at least one NMOS pull-down transistor therein responsive to a first pull-up signal and a first pull-down signal, respectively. The second totem pole driver stage has at least one NMOS pull-up transistor and at least one PMOS pull-down transistor therein responsive to a second pull-up signal and second pull-down signal, respectively. The linearity of the output driver circuit is enhanced by including a first resistive element that extends between the first and second totem pole driver stages. The first resistive element has a first terminal, which is electrically coupled to drain terminals of the at least one PMOS pull-up transistor and the at least one NMOS pull-down transistor in the first totem pole driver stage, and a second terminal, which is electrically coupled to source terminals of the at least one NMOS pull-up transistor and the at least one PMOS pull-down transistor in the second totem pole driver stage.

摘要翻译： 阻抗匹配的输出驱动器电路包括第一图腾柱驱动器级和第二图腾柱驱动级。 第一图腾柱驱动级包括分别响应于第一上拉信号和第一下拉信号的至少一个PMOS上拉晶体管和至少一个NMOS下拉晶体管。 第二图腾柱驱动级具有分别响应于第二上拉信号和第二下拉信号的至少一个NMOS上拉晶体管和至少一个PMOS下拉晶体管。 通过包括在第一和第二图腾柱驱动级之间延伸的第一电阻元件来增强输出驱动器电路的线性度。 第一电阻元件具有第一端子，其电耦合到第一图腾柱驱动器级中的至少一个PMOS上拉晶体管的漏极端子和至少一个NMOS下拉晶体管，以及第二端子，其中 电耦合到第二图腾柱驱动级中的至少一个NMOS上拉晶体管的源极端子和至少一个PMOS下拉晶体管。

公开(公告)号：US20130050024A1

公开(公告)日：2013-02-28

申请号：US13594466

申请日：2012-08-24

申请人： William C. BAROTT ,  Brian K. Butka ,  Justin D. Engle ,  Albert Helfrick

发明人： William C. BAROTT ,  Brian K. Butka ,  Justin D. Engle ,  Albert Helfrick

IPC分类号： G01S3/02

CPC分类号： G01S13/003

摘要： A system for the passive location of non-cooperating vehicles using satellite-based transmitters with ionospheric compensation. The system is a light-weight, low-cost, portable, and field-deployable station to supplement deficiencies in the National Airspace System (NAS) and homeland security surveillance networks. The system accommodates observation modes having long “integration” times that potentially are greater than one second. The system utilizes satellite-based transmitters as illuminators. The passive system measures two radio waves (e.g., a direct path and an illumination plus reflection path), and applies time-difference techniques that can compensate for the ionosphere since the ionospheric delay is applied to both signals. This also has the advantage of compensating for other uncertainties such as exist in the position of the satellite.

摘要翻译： 使用基于卫星的发射机进行电离层补偿的非合作车辆的被动定位系统。 该系统是一个轻便，低成本，便携式和现场部署站，以补充国家空域系统（NAS）和国土安全监控网络的缺陷。 该系统适应具有长于1秒的长积分时间的观察模式。 该系统采用基于卫星的变送器作为照明器。 无源系统测量两个无线电波（例如，直接路径和照明加上反射路径），并且应用可补偿电离层的时差技术，因为电离层延迟被应用于两个信号。 这还具有补偿诸如卫星位置中存在的其他不确定性的优点。