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    • 14. 发明申请
    • Broadband 180° degree hybrid microwave planar transformer
    • 宽带180°混合微波平面变压器
    • US20060091974A1
    • 2006-05-04
    • US11261690
    • 2005-10-28
    • Alexander Feldman
    • Alexander Feldman
    • H01P5/12
    • H01P5/12
    • A hybrid 180° microwave balun device is provided to convert an unbalanced RF signal at the common port into two radio frequency signals with equal amplitude and 180° phase difference at two differential ports. The hybrid device includes a coplanar waveguide connecting to the common port. A power divider separates the coplanar waveguide into two symmetrical slotline waveguides to carry balanced signals. Two broadband multioctave slotline to microstrip transitions constructed in a way that the microstrip lines carry 180° phase separated signals to the differential output ports.
    • 提供了一种混合的180°微波平衡 - 不平衡变换器,用于将公共端口处的不平衡RF信号转换成两个差分端口具有相等振幅和180°相位差的两个射频信号。 混合器件包括连接到公共端口的共面波导。 功率分配器将共面波导分离成两个对称的时隙线波导以承载平衡信号。 两个宽带多功能线槽到微带转换,以微带线将180°相位分离信号传送到差分输出端口。
    • 17. 发明授权
    • Automatic calibration techniques with improved accuracy and lower complexity for high frequency vector network analyzers
    • 高频矢量网络分析仪的自动校准装置和技术具有更高的精度和更低的复杂度
    • US07924024B2
    • 2011-04-12
    • US12024916
    • 2008-02-01
    • Jon S. MartensAlexander Feldman
    • Jon S. MartensAlexander Feldman
    • G01R27/28G01R11/32
    • G01R27/32G01R35/005
    • A calibration module, for use in calibrating a VNA, includes ports connectable to the VNA, calibration standards, and single pole multi throw (SPMT) switches. Each SPMT includes a single pole terminal, multiple throw terminals and a shunt terminal corresponding to each multiple throw terminal. A switching path is between each throw terminal and the single pole terminal, and between each shunt terminal and the single pole terminal. Each switching path includes at least one solid state switching element. The calibration standards are selectively connectable to the ports of the calibration module by selectively controlling the switching elements. Each port of the calibration module is directly connected to a throw terminal of one of the SPMT switches. Also, unique algorithm are provided for calibrating a VNA when using a calibration impedance that is a hybrid of a reflect standard and a transmission standard, which can be achieved using the calibration module.
    • 用于校准VNA的校准模块包括可连接到VNA,校准标准和单极多掷(SPMT)开关的端口。 每个SPMT包括单极端子,多掷端子和对应于每个多掷端子的分流端子。 开关路径在每个投掷端子和单极端子之间以及在每个分流端子和单极端子之间。 每个开关路径包括至少一个固态开关元件。 通过选择性地控制开关元件,校准标准可选择地连接到校准模块的端口。 校准模块的每个端口直接连接到其中一个SPMT开关的一个投掷终端。 而且,当使用校准阻抗是反射标准和传输标准的混合物时,提供了唯一的算法来校准VNA,这可以使用校准模块来实现。
    • 20. 发明申请
    • AUTOMATIC CALIBRATION TECHNIQUES WITH IMPROVED ACCURACY AND LOWER COMPLEXITY FOR HIGH FREQUENCY VECTOR NETWORK ANALYZERS
    • 自动校准装置和技术具有改进的精度和较低的复杂度,用于高频矢量网络分析仪
    • US20080197858A1
    • 2008-08-21
    • US12024916
    • 2008-02-01
    • Jon S. MartensAlexander Feldman
    • Jon S. MartensAlexander Feldman
    • G01R35/00
    • G01R27/32G01R35/005
    • A calibration module, for use in calibrating a VNA, includes ports connectable to the VNA, calibration standards, and single pole multi throw (SPMT) switches. Each SPMT includes a single pole terminal, multiple throw terminals and a shunt terminal corresponding to each multiple throw terminal. A switching path is between each throw terminal and the single pole terminal, and between each shunt terminal and the single pole terminal. Each switching path includes at least one solid state switching element. The calibration standards are selectively connectable to the ports of the calibration module by selectively controlling the switching elements. Each port of the calibration module is directly connected to a throw terminal of one of the SPMT switches. Also, unique algorithm are provided for calibrating a VNA when using a calibration impedance that is a hybrid of a reflect standard and a transmission standard, which can be achieved using the calibration module.
    • 用于校准VNA的校准模块包括可连接到VNA,校准标准和单极多掷(SPMT)开关的端口。 每个SPMT包括单极端子,多掷端子和对应于每个多掷端子的分流端子。 开关路径在每个投掷端子和单极端子之间以及在每个分流端子和单极端子之间。 每个开关路径包括至少一个固态开关元件。 通过选择性地控制开关元件,校准标准可选择地连接到校准模块的端口。 校准模块的每个端口直接连接到其中一个SPMT开关的一个投掷终端。 而且,当使用校准阻抗是反射标准和传输标准的混合物时,提供了唯一的算法来校准VNA,这可以使用校准模块来实现。