Vertically polarized omnidirectional printing filtering antenna

Abstract

The invention discloses a vertically polarized omnidirectional printing filtering antenna which is prepared by employing printed circuit board (PCB) technology. The antenna is characterized in that: the antenna comprises a lower surface metal layer, a dielectric layer and an upper surface metal layer from the top down; one end of the upper surface metal layer is provided with a microstrip line which is connected with an SIW (substrate integrated waveguide) transmission line through a microstrip gradually change line, and the SIW transmission line is connected with a first series feed microstrip paster array through a gradually change printing parallel wire; the lower surface metal layer is provided with a second series feed microstrip paster array. The vertically polarized omnidirectional printing filtering antenna has the characteristics of easy preparation and high processing precision, and is especially suitable for high frequency like a Ku wave band usage.

Description

technical field [0001] The invention belongs to the application field of communication technology, and in particular relates to a vertically polarized omnidirectional printed filter antenna. Background technique [0002] In recent years, wireless communication technology has developed rapidly and has been widely used. Antennas are key components of wireless communication systems, and omnidirectional antennas have similar radiation characteristics in all directions. Modern communication systems require antennas that are low cost, easy to fabricate, and easy to integrate with other microwave radio frequency planar circuits. At present, low-frequency communication has tended to be saturated, so high-band, omnidirectional radiation, easy-to-fabricate, and easy-to-integrate antennas have become one of the new research hotspots. [0003] The vertically polarized omnidirectional radiation unit can be realized by using dipoles, and the radiation gain of a single dipole is limited,...

AI Technical Summary

Problems solved by technology

But in the higher frequency band, the dipole with non-planar structure is difficult and complex to process

The dipole array with planar structure needs to be fed by a power divider. The more radiating elements in the same array, the more complex the feeding network will be.

At the same time, as the frequency increases, such as in the Ku band, the complex feed network will cause problems such as large loss and strong spurious radiation.

Images