CN210628496U - Broadband high-power omnidirectional whip antenna - Google Patents

Abstract

The utility model discloses a broadband high-power omnidirectional whip antenna, which adopts an asymmetric dipole antenna matched with the broadband to realize the impedance matching of the antenna in a bandwidth range; the adopted broadband matcher enables the antenna to realize high-power transmission work; the feed cable of the antenna is partially wound on the ferrite magnetic ring, so that an antenna directional pattern cannot be influenced by the installation carrier; the top structure of the oscillator adopts the spring steel wire, so that the antenna has better adaptability to height-limiting conditions.

Description

Broadband high-power omnidirectional whip antenna

Technical Field

The invention relates to an omnidirectional antenna, in particular to a broadband omnidirectional antenna capable of transmitting at high power, which is suitable for short-wave and ultra-short-wave communication frequency hopping radio stations or radio station interference equipment.

Background

The omnidirectional antenna has wide application in various communication systems, and has the advantage that the good omnidirectional property ensures that the antenna can realize instantaneous communication within the range of 360 degrees. Due to the low frequency band, the short-wave and ultrashort-wave radio station mostly adopts an omnidirectional antenna to realize the non-directional communication among a plurality of radio stations.

For short wave and ultrashort wave frequency bands, the wavelength is longer, and the device requires the size of the antenna to be as small as possible, and most of the conventional methods adopt tuning to realize efficient radiation of the antenna, but for frequency hopping radio stations, the device requires the antenna to be capable of instantly covering in full frequency band, and particularly for interference devices of communication radio stations, the equipped antenna needs to be instantly covered in full frequency band, and the device needs to have broadband characteristics and can simultaneously cover various communication radio stations. Therefore, the utility model provides a powerful omnidirectional whip antenna of broadband realizes the instantaneous coverage of full frequency channel under the big bandwidth through powerful broadband matching technique to increase the influence of magnetic ring choking and avoid installing the carrier to the antenna directional diagram on the feed subassembly.

Disclosure of Invention

An object of the utility model is to provide a high-power omnidirectional whip antenna of broadband realizes the instantaneous cover of full frequency channel under the big bandwidth through powerful broadband matching technique to increase the influence of magnetic ring choking and avoid installing the carrier to the antenna directional diagram on the feed subassembly.

In order to achieve the purpose, the invention adopts the following technical scheme:

an asymmetric dipole antenna structure is formed by the upper radiator and the lower radiator;

the upper radiator and the lower radiator are connected together through the antenna support part with the nonmetal structure, and the upper radiator and the lower radiator are not electrically connected;

the feed of the upper radiator and the lower radiator is realized through a feed cable and a broadband matching network, and a radio frequency interface of the feed cable is an interface of the formed antenna;

the broadband matching network is a three-port network formed by winding an enameled wire on a ferrite magnetic ring, and three ports of the broadband matching network are respectively and electrically connected with an upper radiating body, a lower radiating body and an open end core wire of a feed cable;

the feed cable is also wound on the ferrite magnetic ring, so that a choking effect is formed, and the influence of the carrier on a radiation pattern caused by more antenna current after the antenna is installed on the carrier is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a broadband high-power omnidirectional whip antenna of the present invention;

FIG. 2 is a schematic diagram of a broadband matching network;

fig. 3 is a schematic diagram of a feeder cable structure.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1, the present invention provides a broadband high-power omni-directional whip antenna, which includes a lower radiator 1, an upper radiator 2, an antenna support 3, a feed network 4, and a feed cable 5.

The upper radiator 1 is positioned at the upper part of the antenna, the lower radiator 2 is positioned at the lower part of the antenna, and the upper radiator and the lower radiator are fixed together through a nonmetallic antenna support 3; the size of the upper radiator 1 can correspond to 1 mm-10000 mm, and the size of the lower radiator 2 can be 1 mm-10000 mm;

the upper radiator 1 consists of a metal cylinder 1-1, a spring steel wire 1-2 and a spring steel wire 1-3;

the antenna support member 3 consists of a non-metal cylinder 3-1 and a non-metal cover plate 3-2, and the upper radiator 1 and the lower radiator 2 are fixedly installed through an installation screw hole on the non-metal cylinder 3-1;

the feed network 4 is arranged in the cylinder of the antenna support member 3 and is electrically connected with the core wires of the upper radiator 1, the lower radiator 2 and the feed cable 5 in the cylinder;

the antenna inputs and outputs radio frequency signals through a radio frequency interface of the feeder cable 5.

Referring to fig. 2, a feed network 4 of the present application is composed of a ferrite bead 4-1, an enameled wire 4-2, and a heat sink, and the number of strands, the number of turns of winding, and the corresponding electrical connection mode of the enameled wire are all the working contents of actual antenna tuning; the wound feed network 4 is provided with 3 ports which are respectively and electrically connected with the core wires of the upper radiator 1, the lower radiator 2 and the feed cable 5;

referring to fig. 3, the feeding cable 5 of the present application includes an open-circuit coaxial line 5-1 and a ferrite bead 5-2, wherein the open-circuit coaxial line is wound around the ferrite bead, and the ferrite bead is located near the rf port; the open end outer conductor connection of the feed cable 5 is connected to the lower radiator and the core wire is connected to the feed network.

Claims (5)

1. A broadband high-power omni-directional whip antenna, comprising: the antenna comprises an antenna lower arm, an antenna upper arm, an antenna supporting piece, a broadband matcher and a feed cable;

the antenna lower arm and the antenna upper arm are connected together through an antenna supporting piece;

the broadband matcher is arranged in the antenna support and is respectively and electrically connected with the antenna lower arm, the antenna upper arm and the feed cable;

the antenna performs radio frequency output through the feeder cable.

2. The broadband high power omni-whip antenna of claim 1, wherein the lower antenna arm is located at the lowest part of the antenna, and the upper antenna arm is located at the highest part of the antenna;

the lower arm of the antenna is of a metal cylinder structure and is provided with an interface which is fixedly installed with the antenna support piece, the broadband matcher and the feed cable;

the upper arm of the antenna is a combination of a metal tube structure and a spring steel wire and is provided with a metal tube, a spring steel wire 1 and a spring steel wire 2; the metal cylinder, the spring steel wire 1 and the spring steel wire 2 are connected together to form an upper arm of the antenna.

3. The broadband high power omni-whip antenna of claim 1, wherein the antenna support is a non-metal structure for fixing the antenna lower arm and the antenna upper arm, and a broadband matcher may be installed therein;

the antenna support part consists of a supporting tube and a cover plate;

the broadband matcher is arranged in the supporting pipe.

4. The broadband high-power omnidirectional whip antenna as claimed in claim 1, wherein the broadband matcher is used for impedance matching of the antenna, and is characterized in that the broadband high-power omnidirectional whip antenna is formed by winding a ferrite magnetic ring and an enameled wire to form a 3-contact matching network;

and the 3 contacts of the broadband matcher are respectively connected with the antenna lower arm, the antenna upper arm and the feed cable.

5. The broadband high power omni-directional whip antenna as claimed in claim 1, wherein the feeding cable is used for feeding the antenna, and the feeding cable is wound around the ferrite magnetic loop, and has an open structure of a coaxial line at one end and a radio frequency connection at the other end;

the rubber-insulated wire at the coaxial open end of the feed cable is electrically connected with the antenna lower arm at the top part of the antenna lower arm, and the output joint of the radio frequency joint is fixed at the bottom part of the antenna lower arm;

and the 3 contacts of the broadband matcher are respectively connected with the antenna lower arm, the antenna upper arm and the feed cable.

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