Double-frequency slot antenna and tuning method thereof

Abstract

The invention discloses a double-frequency slot antenna and a tuning method thereof, wherein the double-frequency slot antenna is etched on the upper surface of a dielectric substrate. The upper surface of the dielectric substrate is coated with a metal layer which serves as a metal radio frequency field. The double-frequency slot antenna comprises a folded slot resonator and a coplanar waveguide step impedance resonator, wherein the former consists of a first groove wire, two second groove wires, two third groove wires, two fourth groove wires and two fifth groove wires, and the latter is connected with the metal radio frequency field through a metal wire and feeds power to the multi-mode slot resonator through a coplanar waveguide whose end is of a T-shape. According to the invention, through the utilization of a multi-mode slot resonator and through the power feeding of a coplanar waveguide, the double-frequency characteristics of an antenna can be achieved; and in addition, the tuning method for the double-frequency slot antenna can tune the resonation frequencies of the antenna through the adjustment of the design dimension parameters of the antenna so as to effectively adjust the central working frequency and the bandwidth characteristics of the antenna.

Description

technical field [0001] The invention relates to the technical field of radio frequency microwave communication, in particular to a dual-frequency slot antenna and a tuning method thereof. Background technique [0002] In the current multi-frequency antenna design, designers often realize multi-frequency bands by combining multiple radiators with different resonant frequencies, so the size of the antenna is often large. Therefore, it is necessary to propose a dual-frequency antenna with a smaller design size, which uses a dual-frequency resonator with two resonant frequencies, and the two resonant frequencies can be effectively adjusted, so that the central operating frequency and bandwidth of the dual-frequency antenna are uniform. Has a high ability to adjust. Contents of the invention [0003] The main purpose of the present invention is to provide a dual-frequency slot antenna and its tuning method, aiming to solve the technical problem that the existing multi-frequenc...

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Problems solved by technology

[0003] The main purpose of the present invention is to provide a dual-frequency slot antenna and its tuning method, which aims to solve the technical problem that the existing multi-frequency antenna realizes multi-frequency bands by combining multiple radiators with different resonant frequencies, resulting in a large antenna size

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