Broadband dual-polarized radiation unit and antenna

Abstract

The invention is applicable to the technical field of communication and provides a broadband dual-polarized radiation unit which is arranged on a metal reflection plate to form an antenna. The broadband dual-polarized radiation unit comprises at least four antenna vibrators, wherein each antenna vibrator comprises a base as well as a balance feed connector and two unit arms mounted on the base; the two unit arms are symmetrically arranged; one end of each unit arm is connected with the balance feed connector and the other end of each unit arm is closed and vertically extends to form a convex wall; and the unit arms of the four antenna vibrators are fixedly connected through isolation fixing pieces. The invention further correspondingly provides a dual-polarized antenna comprising a plurality of the radiation units.. Therefore, the size of a multi-frequency common antenna can be reduced; and meanwhile, each technological parameter of the antenna is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a broadband dual-polarization radiation unit and an antenna. Background technique [0002] At present, under the coexistence of 2G and 3G networks, there are more and more demands for multi-frequency antennas compatible with 2G and 3G networks, and with the rapid development of communication technology, the bandwidth, size and performance indicators of multi-frequency antennas are also increasing. Make higher and higher demands. [0003] In view of the above development trend, it is more common in the market to adopt two pairs of dipoles to be distributed orthogonally to form a "◇"-shaped or circular antenna design scheme, such as the scheme given in the patent US6333720B1 of the German Kathrein company as the applicant , the vibrator described in this patent adopts two pairs of dipoles to be placed orthogonally, the unit arm is linear, and the entire vibrator cross-sectio...

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Problems solved by technology

This design has the following two shortcomings. First, the linear structure of the unit arm makes its projected area larger, and the high-frequency oscillator between the two low-frequency oscillators is coupled by the low-frequency oscillator, which deteriorates the radiation performance in the high-frequency band; Second, since the four balancers are fixed on a fixed seat under the high-frequency vibrator and are closer to the high-frequency vibrator, the impedance and radiation characteristics of the high-frequency vibrator are greatly affected by the low-frequency vibrator

[0004] Since the ratio of the low frequency to the high frequency of the ultra-wideband multi-frequency dual-polar

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