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Very-high frequency (VHF) broadband transceiving antenna used on mobile carrier

A technology for transmitting and receiving antennas and mobile carriers, which is applied in directions such as antennas and radiating element structures suitable for movable objects, and can solve problems affecting antenna performance stability, magnetic loop or network loss, and antenna efficiency reduction.

Inactive Publication Date: 2012-09-05
XIAN XINGWANG ANTENNA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high height of the antenna, if the mobile carrier moves during use, it is easy to cause a large swing of the antenna, which will affect the stability of the antenna performance.
In addition, there is a certain loss in the magnetic ring or network at the bottom of this type of antenna that acts as an impedance match, which will also reduce the efficiency of the antenna.

Method used

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  • Very-high frequency (VHF) broadband transceiving antenna used on mobile carrier
  • Very-high frequency (VHF) broadband transceiving antenna used on mobile carrier
  • Very-high frequency (VHF) broadband transceiving antenna used on mobile carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A VHF transceiver vehicle-mounted antenna includes a radiator 1, a feeder cable 2, and an automatic antenna tuner 3 arranged at the bottom of the antenna and connected to the feeder cable 2.

[0020] Such as figure 1 As shown, the radiator 1 is a cylindrical body with a diameter of 70 mm and a length of 650 mm; the radiator 1 is arranged in a glass fiber reinforced plastic cover. In addition, the feeding point 10 is 235 mm away from the top of the radiator 1 .

[0021] The automatic antenna tuner 3 is composed of an antenna impedance testing module 7 , a tuning inductance 5 and an inductance automatic tuning control circuit module 8 . These three modules all use commercially available products, preferably the antenna impedance test module (article number: XW035422), tuning inductor (article number: XW064792) and inductance automatic tuning control circuit module (article number: XW021544) produced and sold by Xi’an Xingwang Antenna Technology Co., Ltd. ).

Embodiment 2

[0024] A military VHF transceiver antenna includes a radiator 1, a feeder cable 2, and an automatic antenna tuner 3 arranged at the bottom of the antenna and connected to the feeder cable 2. A standard military anti-collision spring base is additionally installed between the radiator 1 of the antenna and the automatic antenna tuner 3 to slow down the vibration generated by the vehicle during driving.

[0025] The radiator 1 is a cylindrical body with a diameter of 100 mm and a length of 750 mm; the feeding point 10 of the antenna is 250 mm from the top of the radiator 1 .

[0026] Such as figure 2 As shown, the automatic antenna tuner 3 is composed of an antenna impedance test module 7, a tuning inductance 5 and an inductance automatic tuning control circuit module 8, wherein the antenna impedance test module 7 is used to detect the impedance of the antenna in real time, and the inductance automatic tuning control The circuit module 8 controls the tuning inductance 5 in rea...

Embodiment 3

[0030] The structure of the VHF transceiver vehicle-mounted antenna described in this embodiment is basically the same as that of the VHF transceiver vehicle-mounted antenna described in Embodiment 2, the difference is that in the present embodiment, the diameter of the described radiator 1 is 135 millimeters, and the length is 830 millimeters; The radiator 1 is arranged in a glass fiber reinforced plastic cover. In addition, the feeding point 10 is 265 mm away from the top of the radiator 1 .

[0031] The total height of the military VHF transceiver vehicle antenna is 1000 mm, the performance is that the standing wave ratio is less than 2.5 in the whole frequency band, the gain is not less than 3 meters for the middle feed and 1.8 meters for the low feed antenna, and the antenna radiation pattern is omnidirectional in the horizontal plane.

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Abstract

The invention relates to a very-high frequency (VHF) broadband transceiving antenna used on a mobile carrier, belongs to the field of antennae, and in particular relates to the field of antennae which are combined with other devices or objects structurally. The VHF broadband transceiving antenna comprises a radiating body, a feed cable and an automatic antenna tuner which is arranged at the bottom of the antenna and is connected with the feed cable; the radiating body is a cylindrical body and has the diameter of 30-135mm; the total length of the antenna is 620-1000mm; and the distance between the feeding point of the antenna and the top of the radiating body is 225-265mm. Due to the innovative design for the shape of the radiating body and the position of the feeding point, the height of the antenna is less than or equal to 1m; therefore, when in a matching state, the antenna with the height also has the excellent performance of an antenna with 3m center feed and 1.8m bottom feed in the prior art.

Description

technical field [0001] The invention relates to the field of antennas, in particular to the field of antennas structurally combined with other devices or objects. Background technique [0002] In modern communication technology, in order to realize confidential communication and eliminate interference, technologies such as multi-band, multi-function radio, broadband frequency hopping, and spread spectrum are widely used. However, the existing tuned antenna can no longer meet the system requirements, and a broadband antenna structure is required. Some carriers, such as small and medium-sized surface ships, submarines, tanks, and mobile communication vehicles, have limited space for installing antennas, and it is difficult to install bulky broadband antennas such as cage antennas and biconical antennas. In addition, due to the small space available for mobile carriers to use for antennas, multiple antennas are densely distributed in the small space, and the mutual interference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/27
Inventor 王毅
Owner XIAN XINGWANG ANTENNA TECH
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