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A GPS/bdii triple-band dual-system active satellite navigation receiving antenna applied to micro-unmanned aerial vehicles

A receiving antenna and active satellite technology, which is applied in the field of satellite navigation, can solve the problems that the coplanar multi-frequency technical solution cannot meet the task requirements, the volume and weight are large, and the drone is small in size, etc., and achieve excellent out-of-band suppression performance, The effect of low profile height and strong compatibility

Active Publication Date: 2017-12-15
CHINA AEROSPACE TIMES ELECTRONICS CORP
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AI Technical Summary

Problems solved by technology

[0005] Currently on the market, GPS L1 and BDII B1 are the mainstream combination of small aerial antennas. They are compatible with the miniaturized aerial antenna size of BDII B3. If a laminated structure is used, the volume and weight will be large, which cannot meet the small size of the micro drone. , light weight, and low profile height requirements; Since the frequency ratio of the two frequency points L1 and B3 is 1.24, if the antenna adopts coplanar multi-frequency technology, the frequency point frequency ratio must be greater than 1.5
Therefore, the coplanar multi-frequency technical solution cannot meet the mission requirements.

Method used

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  • A GPS/bdii triple-band dual-system active satellite navigation receiving antenna applied to micro-unmanned aerial vehicles
  • A GPS/bdii triple-band dual-system active satellite navigation receiving antenna applied to micro-unmanned aerial vehicles
  • A GPS/bdii triple-band dual-system active satellite navigation receiving antenna applied to micro-unmanned aerial vehicles

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Embodiment Construction

[0022] The present invention will be further introduced below in conjunction with the accompanying drawings.

[0023] like figure 2 As shown, the tri-band antenna is mainly composed of three parts: a combination of passive dielectric ceramic antenna pieces, a low-noise amplifier circuit, and a shielding box.

[0024] The dielectric ceramic antenna chip combination consists of two antenna chips, which are placed according to the position shown in the figure. The antenna part A is responsible for receiving GPS L1 and BDII B1 signals, and the antenna part B is responsible for receiving BDII B3 signals.

[0025] The distance and relative orientation of antenna A and antenna B have a great influence on the pattern of the tri-band antenna. Due to the relatively short distance, for a single antenna, the electromagnetic field distribution of another antenna will inevitably "squeeze" the radiation pattern of the antenna, causing the maximum axial radiation direction to shift. There...

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Abstract

The invention provides a GPS / BDII three-frequency antenna applied to a micro-miniature unmanned aerial vehicle. The antenna comprises a passive medium ceramic antenna chip assembly, a low-noise amplification circuit and a shielding box, wherein the ceramic antenna chip assembly comprises two high-dielectric-constant ceramic antenna chips; the low-noise amplification circuit comprises two radio frequency branches; the shielding box is designed to have the same shape as a circuit board and has the effects of prevention of foreign matters and electromagnetic shielding. The antenna is compatible with GPS / BDII double-system three-frequency-point operation and has the characteristics of good anti-jamming performance and overvoltage / power supply reverse connection prevention.

Description

Technical field: [0001] The invention belongs to the field of satellite navigation, and relates to a lightweight and small satellite navigation antenna designed with a special-shaped structure. Background technique [0002] Micro UAVs have strict requirements on the size, height, weight and anti-interference performance of the antenna. Under the condition of meeting the navigation requirements of timing and positioning, the miniaturization of aerial antennas is the development direction of future UAV navigation system research. [0003] With the rapid development of my country's Beidou second-generation satellite navigation system, GPS / BDII dual-system integrated antenna is the development trend of future aviation antennas. [0004] The task requirement of the micro UAV is: design a small aerial antenna, the antenna is placed in the structure of the antenna cabin, the plane size of the cabin structure is shown in figure 1 As shown, the cabin height is 13mm ( Figure 1 It ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q5/20H01Q23/00H01Q1/48
Inventor 韩松刘伟于翔海郭庆刘壮华徐旻
Owner CHINA AEROSPACE TIMES ELECTRONICS CORP
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