Electromagnetic dipole complementary end-on-fire antenna with high front-to-back ratio

Abstract

The invention relates to an electromagnetic dipole complementary end-on-fire antenna with a high front-to-back ratio. The antenna comprises a first radiation main body, a second radiation main body, a Balun feeder line and a dielectric substrate; the first radiation main body and the second radiation main body are printed on the upper surface and the lower surface of the dielectric substrate respectively, and the Balun feeder line is further printed on the upper surface of the dielectric substrate and used for feeding the second radiation main body; a first radiation main body printed on the upper surface of the dielectric substrate is a discontinuous circular ring, a second radiation main body printed on the lower surface of the dielectric substrate is a T-shaped dipole, the middle part of the T-shaped dipole is slotted, and the discontinuous circular ring and the slotted T-shaped dipole are bilaterally symmetrical along the slot line of the slot. The antenna does not need an additional reflecting plate, and can achieve a good directional radiation characteristic. The antenna can provide a high-back-ratio and broadband antenna, is simple in structure, can realize directional radiation without a reflecting plate, can effectively reduce the size, adopts a planar structure, is low in manufacturing cost, and is suitable for placing a blind area which is relatively weak in communication signal coverage and limited in space.

Description

technical field [0001] The invention relates to an electromagnetic dipole complementary end-fire antenna with a high front-to-back ratio, and belongs to the technical field of antennas. Background technique [0002] With the development of communication technology, the requirements for the weight and low profile of the antenna are becoming more and more stringent. The end-fire antenna without a reflector can achieve good directional radiation and can be better applied in a limited space. For example, in some communication blind areas, this promotes the research on the structure of planar printed end-fire antennas. An antenna with a high front-to-back ratio can effectively suppress the same-channel interference from the rear of the antenna and improve the communication capacity of the antenna. [0003] The concept of electromagnetic dipole complementarity is to integrate the electric dipole and magnetic dipole into the same antenna design, using the electric dipole E-plane pa...

AI Technical Summary

Problems solved by technology

The traditional electromagnetic dipole has a complex structure, has a certain cross-sectional height, about a quarter of the wavelength of the center frequency point, and has a huge reflector, which is not suitable for large-scale use. Therefore, the planar electromagnetic dipole is also a research hotspot

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