A Small Three-Notch Ultra-Wideband Antenna

Abstract

The invention discloses a small three-trap ultra-broadband antenna, which comprises a dielectric substrate, a microstrip feeder, a rectangular radiation patch and a rectangular ground plate, wherein the microstrip feeder and the rectangular radiation patch are arranged on the dielectric substrate; the microstrip feeder is in a rectangular form; a symmetrical structure is adopted by the rectangular radiation patch to achieve a trap characteristic; two inverted T-shaped slot structures are designed on the rectangular radiation patch part to achieve a 5.2 / 5.8GHz trapped wave; a 3.5GHz trapped wave is achieved by a comb-shaped slot; a C-shaped slot and two rectangular slots are formed and two square patches at the middle part of the comb-shaped slot are reserved to respectively separate two 5.2GHz and 5.8GHz specific trapped waves; and an extremely large impedance bandwidth within a range of 2.2-14.6GHz is achieved by combining the radiation patch structure with the relatively narrow rectangular ground plate. The small three-trap ultra-broadband antenna has the characteristics of being small in volume, simple in structure, good in trap characteristic and large in impedance bandwidth.

Description

technical field [0001] The invention belongs to the field of mobile communication system and wireless communication, and in particular relates to a small three-notch ultra-wideband antenna. Background technique [0002] Since the U.S. Communications Commission (US-FCC) classified the 3.1-10.6GHz frequency band for ultra-wideband (UWB) commercial use in 2002, UWB systems have become more and more attractive, and many new emerging UWB communication systems are working in this frequency band. Due to the extremely wide operating frequency band of the UWB system, there is often spectrum overlap with other narrowband systems, such as the 3.3-3.6GHz Wireless Metropolitan Area Network (Worldwide Interoperability for Microwave Access, WiMAX) frequency band and the 5.1-5.9GHz Wireless Local Area Network (WLAN) frequency band. Networks, WLAN). In order to reduce the mutual interference between different communication systems, the design of notched ultra-wideband antennas with frequen...

AI Technical Summary

Problems solved by technology

Existing multi-notch antennas have disadvantages such as large size, complex structure, and inability to shield the influence of multiple narrowband systems at the same time, and cannot adapt to the trend of communication application equipment becoming thinner and multi-functional.

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