PATENT CLAIM ANALYSIS

Application Number: 16046822
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["342", "357730"]

Abstract:
A multisystem radio-frequency unit of navigational satellite receivers and may be used for the simultaneous reception of any combination of navigation signals from multiple navigation systems: The unit is based on the “system-on-chip” technology and includes four identical independently configurable reception channels with a high degree of isolation from interpenetration of a signal and contaminating signals, two heterodyne frequency synthesizers having a single heterodyne signal generation mode for all four channels, a quadrature heterodyne signal driver for quadrature mixers and an automatic intermediate frequency filter band calibration system. Each reception channel includes a quadrature mixer with image channel suppression adapted to select an upper or lower stop band, and a digital-to-analog automatic intermediate frequency gain control system. During operation, any reference frequency from the specified band can be used for receiving the signal, as well as any conversion frequency from the specified band for the quadrature mixers.

Claim (Index 1):
A multichannel multisystem radio-frequency unit of a navigational satellite receiver made based on \u201csystem-on-chip\u201d technology, which uses the receive path structure with one input signal frequency conversion designed for the simultaneous operation with combination of signals of the navigation satellite systems, including the Global Navigation Satellite System of Russia (GLONAS), US Global Positioning System (GPS), Global Navigation Satellite System of the European Union and European Space Agency (Galileo), China's Navigation Satellite System (BeiDou/COMPASS), India's Regional Navigation Satellite System (IRNSS) and Japan's Regional Navigation Satellite System (QZSS), each channel of which comprises a low-noise amplifier the output of which is connected to an input of a quadrature mixer with suppression of an image channel serially connected with an intermediate frequency filter with a tunable passband the output of which is connected to an input of an intermediate frequency gain control amplifier a signal from which is supplied to the inputs of the output line buffer and two-bit analog-to-digital converter with thresholding the output of which is connected to an analog/digital output signal detector having the digital-to-analog converter to control the gain of the intermediate frequency gain control amplifier and also comprising an automatic intermediate frequency filter band calibration system, two frequency synthesizers with phase-lock-loop frequency control each of which comprises a voltage controlled generator coupled to a prescaler the signal from which is supplied to the input of two serially connected dividers to form a clock frequency of correlators and to the divider integrated into the phase lock loop connected to the input of a frequency-phase detector to a second input of which a signal from a reference frequency divider is supplied to form a comparison frequency, while the output is connected to the frequency synthesizer filter, a heterodyne quadrature signal driver for quadrature mixers and also a power supply module equipped with a voltage stabilizer for each functional unit, a crystal temperature sensor, a serial interface to control modes of operation of components and configuration of the entire multichannel multisystem radio frequency unit.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 95.0
- Lexical Diversity: 1.73626
- Patent Class: 342.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['11740159', '11058076', '09856746', '12393107', '10749902']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4583702871616837
- 35 USC 102 Novelty (BERT): 0.4809783321923481
- Combined Prediction Score: 0.4606310916647502
- Mean Citation Score: 126.6224868
- Max Citation Score: 132.82783999999998
- Similarity Product: 86.31653441675184

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test