Broadband and low-noise radio frequency amplifier of satellite navigation aviation enhancing system and transmission device

An enhancement system and satellite navigation technology, which is applied in the field of satellite navigation system aviation enhancement, can solve problems such as harsh working environment, inconvenient maintenance of reference receivers, and affecting equipment stability, and achieve good flatness, ability to suppress electromagnetic interference, and loss small effect

Active Publication Date: 2015-02-04
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the maintenance of the reference receiver is inconvenient, and there are many problems. If you need to go through the scene approval procedures to enter the airport; and the reference receiver is installed outdoors, the working environment is harsh, which affects the stability of the equipment

Method used

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  • Broadband and low-noise radio frequency amplifier of satellite navigation aviation enhancing system and transmission device
  • Broadband and low-noise radio frequency amplifier of satellite navigation aviation enhancing system and transmission device

Examples

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Embodiment 1

[0034] A radio frequency signal amplifier of a satellite navigation aviation enhancement system, comprising a cascaded first-stage amplifying circuit, a second-stage amplifying circuit, a first-stage inter-stage matching circuit, a band-pass filter, a second-stage inter-stage matching circuit and a third-stage amplifying circuit.

[0035]The first-stage amplifying circuit is composed of an input matching circuit, an amplifier and an output matching circuit; the input matching circuit is composed of capacitors C1-C6, resistors R1-R2, and inductor L1; one end of the resistor R2 is connected to a +5v power supply, and its The other end is grounded through the resistor R1 and the capacitor C4 in turn; one end of the capacitor C6 is connected to the node between the resistors R1 and R2, and the other end is grounded; one end of the capacitor C5 is connected to the resistor R1 and the capacitor C4 The node between them, the other end of which is grounded; one end of the inductance L...

Embodiment 2

[0045] A satellite navigation aviation enhancement system broadband low-noise radio frequency signal transmission device is composed of cascaded radio frequency signal amplifiers, optical transmitting modules, optical fibers and optical receiving modules; the radio frequency signal amplifier is the broadband satellite navigation aviation enhancement system described in Embodiment 1 low-noise RF amplifiers, such as figure 2 shown.

[0046] The radio frequency signal RFin sent by the satellite navigation antenna is sent to the satellite navigation broadband radio frequency signal amplifier, and the circuit output terminal RFout is connected to the optical transmitting module to convert the radio frequency signal into an optical signal. After optical fiber transmission, the optical signal is transmitted by the optical receiving module. Convert it into an electrical signal C, send it out through the SMA interface, and use it for the reference receiver. The model of the optical f...

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Abstract

The invention discloses a broadband and low-noise radio frequency amplifier of a satellite navigation aviation enhancing system and a broadband and low-noise radio frequency signal transmission device of the satellite navigation aviation enhancing system, which applies the amplifier. The amplifier comprises a first-grade amplification circuit, a second-grade amplification circuit, a first inter-grade matching circuit, a band-pass filter, a second inter-grade matching circuit and a third-grade amplification circuit, which are cascaded. The transmission device is composed of the radio frequency signal amplifier, a light emission module, an optical fiber and a light receiving module. According to the broadband and low-noise radio frequency amplifier and the broadband and low-noise radio frequency signal transmission device, the low-noise receiving of all frequency bands of 1.1GHz-1.7GHz navigation aviation is realized, and the advantages of wide frequency band, low noises, high linearity, high time delaying stability, good flatness and the like are realized; the problem of arrangement distances of a plurality of reference receivers of the satellite navigation aviation enhancing system is solved, an antenna mounting and site selection range is enlarged and conditions are provided for the intensive mounting of the reference receivers.

Description

technical field [0001] The invention relates to a broadband low-noise radio frequency signal amplifier and a transmission device, in particular to a broadband low-noise radio frequency amplifier and a transmission device for a satellite navigation aeronautical enhancement system, belonging to the technical field of satellite navigation aeronautical enhancement. Background technique [0002] The application of satellite navigation in aviation is gradually widespread, and the state has issued relevant policies and regulations to support the promotion and application of satellite navigation systems such as Beidou and GPS. A single satellite navigation system cannot meet the precision approach requirements of aviation vehicles, and a satellite navigation ground-based augmentation system needs to be introduced. The satellite navigation ground-based augmentation system is gradually becoming the main technical means for precision approach of aviation vehicles. [0003] The multi-f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/26H03F3/189G01S19/37
Inventor 邢兆栋董建明赵精博支春阳王振华
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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