Topcon Positioning Systems, Inc.

Andrey Mikhailovich Sokolov

Sergey Ivanovich Tychinskiy

Alexandr Vladimirovich Doronin

Nikolai Nikolaevich Vasilyuk

Igor Arkadievich Sandler

Dmitry Vitalievich Tatarnikov

Konstantin Mikhailovich Bachmanov

Rifat Khaidarovich Yusupov

An improved GNSS antenna having an integrated antenna element in combination with a plurality of built-in sources of additional data and/or a plurality of devices for receiving additional information for exchanging the information and transmission of GNSS signals from the antenna element to a GNSS receiver over a single RF cable.

GNSS antenna with an integrated antenna element and additional information sources

A high-linear amplifier receives, from an input bandpass filter, input signals including weak process signals and strong interference signals, amplifies the input signals, and transmits the amplified signals to an output bandpass filter. The high-linear amplifier includes a transistor and a feedback circuit that stabilizes the operating current of the transistor. The operating current includes the direct-current and low-frequency output signal currents of the transistor. The feedback circuit includes an interference detector that rectifies a portion of the high-frequency output signals of the transistor and extends the linear range of the high-linear amplifier. An interference indicator unit alerts an operator to the presence of excessively high levels of interference before the high-linear amplifier enters the non-linear mode. Amplified signals rejected by the output bandpass filter are reflected back to the high-linear amplifier stage. A directional coupler prevents the reflected signals from disrupting the operation of the interference detector.

Detection of excessively high interference signal levels during reception of global navigation satellite system signals

Growing community of inventors

Moscow, Russia

Andrey Mikhailovich Sokolov