Ultra-wideband antenna with band-notched characteristic

Abstract

The invention discloses an ultra-wideband antenna with a band-notched characteristic. At present, radio communication equipment and electronic information equipment are developed towards multi-functionalization, miniaturization, ultra wide band and surrounding environment friendliness and coordination. The ultra-wideband antenna with the band-notched characteristic comprises a dielectric substrate (1) and a radiation unit (2), wherein a coplanar waveguide grounding surface (3), a radiation unit, a rectangular groove (4) and a coplanar waveguide feed signal stripline (5) are printed on the dielectric substrate; the radiation unit is connected with the coplanar waveguide feed signal stripline; the rectangular groove is reserved on the upper part of the coplanar waveguide grounding surface; the coplanar waveguide grounding surface surrounds around the radiation unit and the coplanar waveguide feed signal stripline (5); and a reserved U-shaped groove (6) is reserved on the radiation unit. The ultra-wideband antenna with the band-notched characteristic is used for receiving and transmitting radio waves; militarily, the ultra-wideband antenna with the band-notched characteristic can be used in terminals for electronic reconnaissance and electronic countermeasure as well as tracking and electromagnetic protection; and in the civil field, the ultra-wideband antenna with the band-notched characteristic can be used in terminal receiving equipment for ultra-wideband wireless communication.

Description

Technical field: [0001] The invention relates to an antenna, in particular to an ultra-wideband antenna with notch characteristics. Background technique: [0002] Since radio communication equipment and electronic information equipment are developing toward multi-functionality, miniaturization, ultra-wideband, and friendly coordination with the surrounding environment, this makes broadband, miniaturization, and high gain one of the hot research topics at home and abroad. In recent years, 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 better polarization characteristics, so this technology has been applied in the design of ultra-wideband antennas and related microwave In the design of circuit components. However, the frequency band occupied by the current ultra-wideband communication and the wireless local area network have a common part, ...

AI Technical Summary

Problems solved by technology

Usually this method will cause mismatch between the antenna and the microwave circuit, and even reduce the overall performance of the system, so designing an ultra-wideband antenna with notch characteristics is one of the important methods to solve this problem

At the same time, solve some shortcomings of existing antennas: (1) The structure and process of the currently designed antenna are relatively complicated, so designing an antenna with a simple structure has become a research hotspot at this stage

(2) At present, most ultra-wideband antennas usually need to drill holes during system integration, and use reactive elements to connect to the RF front-end, so the complexity of the system is increased, the performance of the system is reduced, and the needs of miniaturization cannot be met.

However, it still cannot overcome the current electromagnetic interference problem

The document "Harmonic Control For An Integrated Microstrip Antenna With Loaded Transmission Line, Shun-Yun Lin, Kuang-Chih Huang, and Jin-Sen Chen. Microwave And Optical Technology Letters, Vol.44, No.4, February, 2005", proposed a Use periodic structure to suppress harmonics, but the volume is l...

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