Reconfigurable ultra-wideband monopole antenna with notch characteristics

Abstract

Provided is a reconfigurable ultra-wideband monopole antenna with a notch characteristic, comprising a radiation unit, a micro-strip feeder, a dielectric substrate and a ground plate, wherein the radiation unit and the micro-strip feeder are arranged on an upper surface of the dielectric substrate, and the ground plate is arranged on a lower surface of the dielectric substrate; the radiation unit comprises an isosceles trapezoid area and a rectangular area with a width equal to that of a lower bottom of the isosceles trapezoid area and connected to the isosceles trapezoid area, and the rectangular area is provided with an arc gap with the opening thereof facing the lower bottom of the isosceles trapezoid area; several radio frequency switches are arranged on the arc gap; and an upper bottom of the isosceles trapezoid area of the radiation unit is connected to the micro-strip feeder. The reconfigurable ultra-wideband monopole antenna with a notch characteristic of the present invention not only has a complete UWB performance, but also achieves antenna miniaturization while achieving on-demand notch reconfigurability at the same time.

Description

technical field [0001] The invention relates to the technical field of microwave communication, in particular to a reconfigurable ultra-wideband monopole antenna with notch characteristics. Background technique [0002] Since the Federal Communications Commission announced the use of the 3.1-10.6GHz frequency band in the commercial field in 2002, ultra-wideband (UWB) communication systems with high data transmission rates, low cost, low power consumption, and strong anti-interference capabilities have developed rapidly. UWB antennas It has become a research hotspot of international scholars in recent years. However, the UWB frequency band includes frequency bands such as WLAN and WiMAX, and there may be some interference between them. In the prior art, the notch is often used to solve this technical problem. Usually, UWB antennas implement notch by loading radiation gaps or resonant stubs on the antenna, so it is difficult to ensure complete UWB performance. [0003] There...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a reconfigurable ultra-wideband monopole antenna with notch characteristics, aiming to solve the problem that the antenna in the prior art is difficult to guarantee the complete UWB performance and the antenna size is large

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