公开(公告)号：WO2009099952A3

公开(公告)日：2009-10-15

申请号：PCT/US2009032670

申请日：2009-01-30

Applicant: VIASAT INC ,  SAUNDERS DAVID R

Inventor： SAUNDERS DAVID R

IPC: G01S7/03

CPC classification number: G01S7/032 ,  G01S7/4008 ,  H03L7/099 ,  H03L7/10 ,  H03L2207/06

Abstract: Various techniques may be implemented to isolate a receive signal from a transmit signal in an antenna. Signal isolation is desirable because it prevents interference of the signals with one another and minimizes signal noise, which reduces the signal quality. Some of the techniques are symmetry of at least two receive channels with regards to a transmit channel, using differential signals within the antenna, designing receive channel inputs to be orthogonal to a transmit channel, and designing a voltage controlled oscillator to be on the same substrate as the tuning circuitry of the voltage controlled oscillator.

Abstract translation: 可以实现各种技术以将接收信号与天线中的发射信号隔离。 信号隔离是理想的，因为它可以防止信号互相干扰，并将信号噪声降到最低，从而降低信号质量。 这些技术中的一些关于发射信道是至少两个接收信道的对称性，在天线内使用差分信号，将接收信道输入设计为与发射信道正交，并将压控振荡器设计为在同一基板上 作为压控振荡器的调谐电路。

公开(公告)号：WO2009099952A2

公开(公告)日：2009-08-13

申请号：PCT/US2009/032670

申请日：2009-01-30

Applicant: VIASAT, INC. ,  SAUNDERS, David R.

Inventor： SAUNDERS, David R.

IPC: G01S7/03

CPC classification number: G01S7/032 ,  G01S7/4008 ,  H03L7/099 ,  H03L7/10 ,  H03L2207/06

Abstract: Various techniques may be implemented to isolate a receive signal from a transmit signal in an antenna. Signal isolation is desirable because it prevents interference of the signals with one another and minimizes signal noise, which reduces the signal quality. Some of the techniques are symmetry of at least two receive channels with regards to a transmit channel, using differential signals within the antenna, designing receive channel inputs to be orthogonal to a transmit channel, and designing a voltage controlled oscillator to be on the same substrate as the tuning circuitry of the voltage controlled oscillator.

Abstract translation: 可以实现各种技术以将接收信号与天线中的发射信号隔离。 信号隔离是期望的，因为它可以防止信号彼此的干扰，并使信号噪声最小化，这降低了信号质量。 一些技术是关于发射信道的至少两个接收信道的对称性，使用天线内的差分信号，将接收信道输入设计为与发射信道正交，以及将压控振荡器设计在同一衬底上 作为压控振荡器的调谐电路。

公开(公告)号：WO2010120762A2

公开(公告)日：2010-10-21

申请号：PCT/US2010030871

申请日：2010-04-13

Applicant: VIASAT INC ,  SAUNDERS DAVID R

Inventor： SAUNDERS DAVID R

IPC: H03F3/26 ,  H03F1/26

CPC classification number: H01Q3/34 ,  G06G7/12 ,  H01Q3/26 ,  H01Q3/36 ,  H01Q15/242

Abstract: A preselector amplifier system and method including of various components is described. The various components may include a vector generator, an active power splitter, an active power combiner, or the like. The preselector amplifier may be integral to and/or coupled to a communications system. The communications system may be at least one of a transceiver, receiver and/or transmitter. The communications system may transmit radio frequency (RF) signals.

Abstract translation: 描述了包括各种部件的预选放大器系统和方法。 各种组件可以包括矢量发生器，有源功率分配器，有功功率组合器等。 预选器放大器可以与通信系统集成和/或耦合到通信系统。 通信系统可以是收发机，接收机和/或发射机中的至少一个。 通信系统可以发射射频（RF）信号。

公开(公告)号：WO2010120770A1

公开(公告)日：2010-10-21

申请号：PCT/US2010/030881

申请日：2010-04-13

Applicant: VIASAT, INC. ,  CORMAN, David W. ,  ZIENKEWICZ, Rob ,  SAUNDERS, David R.

Inventor： CORMAN, David W. ,  ZIENKEWICZ, Rob ,  SAUNDERS, David R.

IPC: H01Q3/36 ,  H01Q15/24 ,  H01Q3/26

CPC classification number: H01Q3/34 ,  G06G7/12 ,  H01Q3/26 ,  H01Q3/36 ,  H01Q15/242

Abstract: In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously. Furthermore, the antenna polarization may be static or dynamically controlled at the subarray or radiating element level.

Abstract translation: 在示例性实施例中，相控阵天线包括与多个辐射元件通信的多个子电路。 调整射频信号用于偏振控制和光束转向。 在接收实施例中，接收多个RF信号并将其组合成至少一个接收波束输出。 在发送实施例中，至少一个发射波束输入被分割并通过多个辐射元件传输。 在示例性实施例中，相控阵天线在多个工作频带上提供多波束形成。 有源元件的宽带特性允许同时在多个频带上进行操作。 此外，天线极化可以是在子阵列或辐射元件级别处的静态或动态控制。

公开(公告)号：WO2006124168A1

公开(公告)日：2006-11-23

申请号：PCT/US2006/014275

申请日：2006-04-14

Applicant: MOTOROLA, INC. ,  SAUNDERS, David R. ,  GLAESS, Jeffrey D. ,  HANSEN, Robert K. ,  HELWIG, Arthur P.

Inventor： SAUNDERS, David R. ,  GLAESS, Jeffrey D. ,  HANSEN, Robert K. ,  HELWIG, Arthur P.

IPC: H03M1/72

CPC classification number: H03M1/181

Abstract: An automatic gain control device (110) includes a peak detector (202) configured to receive a current output of an ADC (108) and to compare it to a previous output to produce a peak value. The automatic gain control device (110) also includes an out-of-range indicator (204) configured to receive an out-of-range signal if an input to the ADC exceeds the dynamic range of the ADC. The out-of-range indicator (204) increases the peak value if the out-of-range indicator (204) receives the out-of range signal. An error detector (206) is coupled to the out-of-range indicator (204) and the peak detector (202) and produces an error level that is the difference of an output of the out-of-range indicator (204) and a pre-selected target value. The pre-selected target value is chosen to attenuate interference signals that exceed the dynamic range of the ADC (108) but minimizes the attenuation of communication signals.

Abstract translation: 自动增益控制装置（110）包括峰值检测器（202），其被配置为接收ADC（108）的电流输出并将其与先前输出进行比较以产生峰值。 自动增益控制装置（110）还包括超范围指示器（204），其被配置为如果ADC的输入超过ADC的动态范围，则接收超出范围的信号。 超出范围指示符（204）如果超出范围指示符（204）接收到超出范围信号，则增加峰值。 误差检测器（206）耦合到超出范围指示器（204）和峰值检测器（202），并产生误差电平，该误差电平是超出范围指示器（204）和 预先选定的目标值。 选择预选的目标值以衰减超过ADC（108）的动态范围的干扰信号，但是最小化通信信号的衰减。

公开(公告)号：WO2010120762A3

公开(公告)日：2010-10-21

申请号：PCT/US2010/030871

申请日：2010-04-13

Applicant: VIASAT, INC. ,  SAUNDERS, David, R.

Inventor： SAUNDERS, David, R.

IPC: H03F3/26 ,  H03F1/26

Abstract: A preselector amplifier system and method including of various components is described. The various components may include a vector generator, an active power splitter, an active power combiner, or the like. The preselector amplifier may be integral to and/or coupled to a communications system. The communications system may be at least one of a transceiver, receiver and/or transmitter. The communications system may transmit radio frequency (RF) signals.

公开(公告)号：WO2009099953A1

公开(公告)日：2009-08-13

申请号：PCT/US2009/032672

申请日：2009-01-30

Applicant: VIASAT, INC. ,  SAUNDERS, David R.

Inventor： SAUNDERS, David R.

IPC: G01S7/40 ,  H03C3/09

CPC classification number: G01S7/032 ,  G01S7/4008 ,  H03L7/099 ,  H03L7/10 ,  H03L2207/06

Abstract: In an exemplary embodiment, a free running VCO has two modes: a normal operating mode and a calibration mode. In the calibration mode, the free running VCO is phase lock looped with itself instead of a calibration VCO. Furthermore, in an exemplary embodiment, a tuning voltage for the free running VCO is adjusted to offset any tuning error. In addition, in various embodiments a reference crystal oscillator used in the phase lock loop is located on a DSP module instead of on the RF module. In yet another exemplary embodiment, the free running VCO is the only high frequency VCO on a radio frequency module.

Abstract translation: 在示例性实施例中，自由运行的VCO具有两种模式：正常操作模式和校准模式。 在校准模式下，自由运行的VCO是自锁的，而不是校准VCO。 此外，在示例性实施例中，调整用于自由运行的VCO的调谐电压以抵消任何调谐误差。 此外，在各种实施例中，在锁相环中使用的参考晶体振荡器位于DSP模块而不是RF模块上。 在另一示例性实施例中，自由运行的VCO是射频模块上唯一的高频VCO。