Foldable portable dual-mode ultra-wideband omnidirectional antenna

Abstract

The invention provides a foldable portable dual-mode ultra-wideband omnidirectional antenna which comprises an upper antenna, a connecting sleeve, a steering gear assembly and a base, two ends of thesteering gear assembly are respectively connected with the base and the connecting sleeve; the upper antenna comprises a steel belt, a steel belt connecting piece, a coil and an outer conductor tube;two ends of the steel belt connecting piece are respectively connected with the steel belt and the coil; the connecting sleeve comprises an upper connecting sleeve and a lower connecting sleeve; a rigid wire is set in the outer conductor pipe, the upper end of the rigid wire is connected with the coil, and the lower end of the rigid wire is connected with the lower end of the outer conductor tubeand the upper connecting sleeve; the steering gear assembly comprises a gooseneck and a broadband matcher; the base includes a radio frequency connector and an antenna choke. According to the dual-mode working system provided by the invention, the problem that an existing ultra-wideband antenna is cracked in a high-frequency band directional diagram and cannot effectively realize communication issuccessfully solved; and meanwhile, the antenna is convenient to fold, convenient to carry, bendable, steerable and high in practicability.

Description

technical field [0001] The invention belongs to the technical field of communications and antennas, and in particular relates to a foldable and portable dual-mode ultra-wideband omnidirectional antenna. Background technique [0002] In radio equipment, the device used to radiate and receive radio waves is called an antenna. Like transmitters and receivers, antennas are also an important part of radio equipment. With the rapid development of modern communication technology, the frequency band of radio communication is getting wider and wider. From the original single-frequency point and broadband communication to multi-frequency point and ultra-wideband communication technology, the latest ultra-wideband communication frequency bandwidth has reached A dozen or even thirty octaves. In response to this demand, the corresponding antenna operating bandwidth has also been rapidly expanded, requiring coverage of more than a dozen or even dozens of octaves. Although the impedance...

AI Technical Summary

Problems solved by technology

In order to solve the problem that the ultra-wideband antenna has a fission pattern in the high-frequency band and cannot effectively realize communication, the present invention proposes a dual-mode working system: specifically, in the low-frequency band, the working mode of the antenna is basically the same as that of the original wide-band antenna, which is still In the monopole form, the radiation pattern of the antenna is omnidirectional and the horizontal plane is the largest; in the high frequency band, the antenna working mode becomes a dipole form, and the antenna radiation pattern is similar to the standard dipole antenna pattern at this time, ensuring that the antenna pattern is completely Characteristic of maximum radiation in azimuth and horizontal planes

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