公开(公告)号：US08975967B2

公开(公告)日：2015-03-10

申请号：US13672329

申请日：2012-11-08

Applicant: JAVAD GNSS, Inc.

Inventor： Javad Ashjaee ,  Dmitry Dubrovsky

IPC: H03F3/04

CPC classification number: H03F3/191 ,  G01S19/36 ,  H04B1/18

Abstract: A low-noise amplifier (LNA) filter for use with global navigation satellite system (GNSS) devices is disclosed. A first LNA stage, which is configured to connect to an antenna configured to receive GNSS signals, includes an LNA. A second LNA stage, which is connected to the output of the first LNA stage, has a surface acoustic wave (SAW) filter and an LNA. A third LNA stage, which is connected to the output of the second LNA stage, also has a SAW filter and an LNA.

Abstract translation: 公开了一种用于全球导航卫星系统（GNSS）设备的低噪声放大器（LNA）滤波器。 配置为连接到被配置为接收GNSS信号的天线的第一LNA级包括LNA。 连接到第一LNA级的输出的第二LNA级具有表面声波（SAW）滤波器和LNA。 连接到第二LNA级的输出的第三LNA级还具有SAW滤波器和LNA。

公开(公告)号：US09748926B2

公开(公告)日：2017-08-29

申请号：US14031363

申请日：2013-09-19

Applicant: JAVAD GNSS, Inc.

Inventor： Javad Ashjaee ,  Dmitry Dubrovsky

IPC: G01S19/36 ,  H03H11/12 ,  G01S19/21 ,  G01S19/37

CPC classification number: H03H11/1239 ,  G01S19/21 ,  G01S19/36 ,  G01S19/37 ,  H03F2200/451

Abstract: Low-noise amplifier (LNA) filters and processes for filtering global navigation satellite system (GNSS) signals are disclosed. The LNA filters can be used to down-convert a received GNSS signal to a lower frequency, filter the GNSS signal at the lower frequency, and up-convert the GNSS signal to the original frequency of the GNSS signal. The down-converted frequency can be selected based on a temperature of the GNSS signal to compensate for shifts in the frequency response of the filter due to temperature changes.

公开(公告)号：US20130113571A1

公开(公告)日：2013-05-09

申请号：US13672329

申请日：2012-11-08

Applicant: JAVAD GNSS, Inc.

Inventor： Javad ASHJAEE ,  Dmitry Dubrovsky

IPC: H03F3/191

CPC classification number: H03F3/191 ,  G01S19/36 ,  H04B1/18

Abstract: A low-noise amplifier (LNA) filter for use with global navigation satellite system (GNSS) devices is disclosed. A first LNA stage, which is configured to connect to an antenna configured to receive GNSS signals, includes an LNA. A second LNA stage, which is connected to the output of the first LNA stage, has a surface acoustic wave (SAW) filter and an LNA. A third LNA stage, which is connected to the output of the second LNA stage, also has a SAW filter and an LNA.

Abstract translation: 公开了一种用于全球导航卫星系统（GNSS）设备的低噪声放大器（LNA）滤波器。 配置为连接到被配置为接收GNSS信号的天线的第一LNA级包括LNA。 连接到第一LNA级的输出的第二LNA级具有表面声波（SAW）滤波器和LNA。 连接到第二LNA级的输出的第三LNA级还具有SAW滤波器和LNA。