Wideband ultrashort wave symmetrical element antenna

Abstract

The invention relates to a wideband ultrashort wave symmetrical element antenna comprising two same radiation units which are arranged in a mirror image manner and one cable socket, wherein each radiation unit comprises more than one independent radiation unit oscillator; the radiation unit oscillator includes a unit oscillator, a unit oscillator loading coil and a top loading oscillator; the bottom of the unit oscillator is connected with the cable socket by a feed pole; the top of the unit oscillator is connected with the top loading oscillator by the loading coil; and the top loading oscillator and the unit oscillator are not located in the same line. As the unit oscillator is connected with the top loading oscillator by the loading coil, the high-performance wideband ultrashort wave symmetrical element antenna can be achieved; the bandwidth and gain of the antenna can be considered when the antenna size is reduced; the antenna length is less than 4m; the diameter is less than 5.0cm; the workable frequency range is 20-110MHz; the gain is not less than 0dBi; the standing-wave ratio is not more than 2.5; the polarization method is vertical polarization; the omnidirectional radiation exists in the horizontal plane; and the element antenna has the advantages of light weight, simple structure, low cost and the like.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a broadband ultrashort wave symmetric dipole antenna. Background technique [0002] At present, in the ultrashort wave communication system, the broadband communication antenna used is generally a monopole antenna loaded in segments, and the monopole is loaded in segments, and its bandwidth can be brought to the requirements, and it can be used as a detection antenna, but it is not suitable for As a transmitting antenna, it is subject to great restrictions. It must be used as a transmitting antenna to dissipate heat at the loading position. Metal radiators will not only affect the electrical performance of the antenna, but also bring many unfavorable factors to the structure of the antenna; and use segmented loading The gain of the method is generally negative, which limits the transmission distance of the antenna signal. Another antenna that is often used in ultrashort wave communicatio...

AI Technical Summary

Problems solved by technology

[0002] At present, in the ultrashort wave communication system, the broadband communication antenna used is generally a monopole antenna loaded in segments, and the monopole is loaded in segments, and its bandwidth can be brought to the requirements, and it can be used as a detection antenna, but it is not suitable for As a transmitting antenna, it is subject to great restrictions. It must be used as a transmitting antenna to dissipate heat at the loading position. Metal radiators will not only affect the electrical performance of the antenna, but also bring many unfavorable factors to the structure of the antenna; and use segmented loading The gain of the method is generally negative, which limits the transmission distance of the antenna signal

Another antenna that is often used in ultrashort wave communication systems is the biconical antenna. Although the bandwidth and gain of this type of antenna can meet the requirements, the size of the antenna is too large in the ultrashort wave band. Requirements for the installation site , which is likely to cause a waste of resources

Images