Ultra-broadband antenna with notched characteristic

Abstract

The invention discloses an ultra-broadband antenna with notched characteristic. The ultra-broadband antenna comprises a dielectric substrate (1), a radiating element (2), a coplanar waveguide signal feed strip line (3) and a coplanar waveguide ground plane (4), wherein a horn-shaped groove (5) is formed in the radiating element, and two E-shaped grooves (6) are formed in the coplanar waveguide ground plane. The radiating element, the coplanar waveguide signal feed strip line and the coplanar waveguide ground plane are printed on the upper surface of the dielectric substrate; the radiating element is located at the middle part of the dielectric substrate, the coplanar waveguide signal feed strip line is led to the radiating element from the edge of the dielectric substrate and is connected to the radiating element; the coplanar waveguide ground plane is formed by two pieces of trapezoidal metals, which are respectively fixed on two sides of the coplanar waveguide signal feed strip line and are spaced with the coplanar waveguide signal feed strip line. The ultra-broadband antenna has the advantages of compact structure and compact size, through changing the size and the position of an epsilon-type groove, the notched frequency is adjusted, and the problem of the same frequency interference of an ultra-wideband communication system is solved.

Description

technical field [0001] The invention designs an antenna, in particular to an ultra-wideband antenna with notch characteristics. Background technique [0002] Since the US Federal Communications Commission (Federal Communications Commission) allowed the commercial use of the 3.1-10.6GHz frequency band, ultra-wideband technology has received wider attention in the academic and commercial fields. The coplanar waveguide structure that does not require drilling and is easy to integrate is changing day by day, and the structure can be fabricated by photographic technology and has good polarization characteristics, so this technology has been applied to the design of ultra-wideband antennas and related microwave circuit components in the design. [0003] However, the frequency band occupied by the current ultra-wideband communication and WiMAX (3.3-3.6GHz) share a part, so it is necessary to design an antenna that can reduce the interference brought to the WiMAX frequency band, an...

AI Technical Summary

Problems solved by technology

Adding a filter is the most commonly used method to solve such problems, but it often causes mismatch between the antenna and the microwave circuit, and even reduces the overall performance of the system. Therefore, designing an ultra-wideband antenna with notch characteristics is an important way to solve this problem. One of the methods, while solving the current relatively complicated structure and process of the antenna

Images