Ultra-wideband high-gain dual-polarized full-wave dipole antenna

Abstract

An ultra-wideband high-gain dual-polarized full-wave oscillator antenna comprises a dual-polarized full-wave oscillator composed of two orthogonally arranged symmetrical oscillators, a reflector plateand a coaxial cable connected with the dual-polarized full-wave oscillator for feeding, wherein the dual-polarized full-wave oscillator is vertically arranged above the reflector plate; The gain of the dual-polarized full-wave oscillator is 10.12 ~ 10.53 dBi, and the side length of the dual-polarized full-wave oscillator is 0.45 [lambda] C-0.55[lambda] C with a total path length of 0.9[lambda]C-1.1[lambda]C; The two symmetrical vibrators both comprise a pair of diagonally symmetrical and closed-loop hollowed-out vibrator arms, At least one longitudinal groove symmetrical along that directionof the vibrator arm and diagonally to the vibrator arm is arranged on the vibrator arm, and conductor strips are connected on the vibrator arm. The antenna has the advantages of ultra-wide band, highgain, dual polarization, high cross polarization ratio, high efficiency, low profile, low intermodulation, high reliability, simple structure, low cost and easy production.

Description

technical field [0001] The invention relates to mobile communication antenna equipment and technology, specifically an ultra-wideband high-gain dual-polarization full-wave dipole antenna. Background technique [0002] A symmetrical dipole or dipole is the most widely used antenna in wireless communications. There are countless antenna variants that have evolved from it, such as the basic radiating element in a cellular base station antenna—a dual-polarized dipole or a cross dipole. However, all kinds of dual-polarized oscillators currently used in base station antennas are half-wave oscillators, although the bandwidth can reach 30%~40% or even wider, such as 698~960 MHz (BW=31.6%) / 1710~2700 MHz ( BW=44.9%) band vibrator, but because the physical aperture is only half a wavelength, the gain is only 8-9dBi. The low gain of the half-wave oscillator makes it difficult to meet the application requirements in many occasions. For example, the gain of the antenna of the micro bas...

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Problems solved by technology

However, it is very difficult to increase the gain of the vibrator. The reason is that while increasing the size and increasing the gain, impedance matching will become extremely difficult. Therefore, the academic and engineering circles have not researched dipole antennas with an electrical size larger than half a wavelength, such as full-wave antennas. Vibrator

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