Conformal omnidirectional short wave antenna for helicopter short wave radio communication

A technology of short-wave radio stations and short-wave antennas, which is suitable for antennas on movable objects and the structural form of radiation elements, etc., to achieve the effects of simple layout, guaranteed performance, and elimination of jitter noise

Inactive Publication Date: 2016-05-25
CHINA HELICOPTER RES & DEV INST
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Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art above, the present invention provides a conformal omnidirectional antenna with a working frequency in the short-wave frequency band. On the basis of ensuring the performance of t

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  • Conformal omnidirectional short wave antenna for helicopter short wave radio communication
  • Conformal omnidirectional short wave antenna for helicopter short wave radio communication

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Embodiment Construction

[0013] refer to figure 1 , The design of the present invention consists of an antenna radiator 1 and a cable assembly 2. Wherein the antenna radiator 1 includes a first radiator 3, a second radiator 4 and a third radiator 5, and the first radiator 3, the second radiator 4 and the third radiator 5 are all copper foils with good electrical conductivity Or aluminum foil, the width of the first radiator 3, the second radiator 4 and the third radiator 5 are all in the range of 20cm to 30cm, and the thickness is in the range of 0.2mm to 0.4mm. The first radiator 3 and the third radiator The sum of the lengths of the radiator 5 is equal to the length of the second radiator 4, the longer the sum of the lengths of the three, the better, but at least greater than 6m, wherein the first radiator 3 is mounted on the inner skin surface of the vertical tail by epoxy resin , the second radiator 4 is mounted on the inner skin surface of the tail boom through epoxy resin, the third radiator 5 ...

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Abstract

The invention relates to the technical field of antennas, and particularly relates to a helicopter conformal omnidirectional short wave antenna for helicopter short wave radio communication. The conformal omnidirectional short wave antenna for helicopter short wave radio communication is composed of an antenna radiator (1) and a cable assembly (2), wherein the antenna radiator (1) and the cable assembly (2) are welded as a whole by a core wire, and a bottom feed mode is adopted. The conformal omnidirectional short wave antenna for helicopter short wave radio communication is characterized in that the conformal antenna technology is adopted, the antenna radiator (1) is mounted on the inner surface of a non-metallic and non-carbon fiber skin of the helicopter, the antenna radiator (1) has three sections, and the three sections are connected into a Z type with the consistent shape with the inner surface of the skin of the helicopter through fasteners. The antennas has better performance, and also has the advantages of simple layout, large radiation elevation angle, no jitter noise, no wire breaking phenomenon and no freezing phenomenon.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a helicopter conformal omnidirectional short-wave antenna, which is suitable for use in helicopter short-wave radio communication. Background technique [0002] At present, most of the antennas used in the short-wave (HF) frequency band in our helicopter communication system are cable antennas. The cable antenna is 8 meters long and is installed on the side of the helicopter by tightening the two ends of the antenna line. On the tail beam, middle fuselage and front fuselage, the distance from the outer skin of the aircraft should be at least 200mm. [0003] The length of the cable antenna is very long. At the same time, in order to ensure the performance, it must be installed on the outer surface of the helicopter more than 200mm away from the metal skin during installation. Therefore, the layout of the antenna is relatively difficult, and its radiation elevation angle is small,...

Claims

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Application Information

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IPC IPC(8): H01Q1/28H01Q1/36
Inventor 雷飞鹏
Owner CHINA HELICOPTER RES & DEV INST
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