Reconfigurable ultra-wideband monopole antenna with notch characteristic

Abstract

The invention provides a reconfigurable ultra-wideband monopole antenna with a notch characteristic. The reconfigurable ultra-wideband monopole antenna comprises a radiating element, a microstrip feeder, a dielectric substrate and an earth plate, wherein the radiating element and the microstrip feeder are arranged on the upper surface of the dielectric substrate, and the earth plate is arranged on the lower surface of the dielectric substrate; the radiating element comprises an isosceles trapezoid area and a rectangular area of which the width is equal to the lower bottom of the isosceles trapezoid area and which is connected to the isosceles trapezoid area, and the rectangular area is provided with an arc gap of which the opening faces the lower bottom of the isosceles trapezoid area; the arc gap is provided with multiple radio frequency switches; the upper bottom of the isosceles trapezoid area of the radiating element is connected to the microstrip feeder. The reconfigurable ultra-wideband monopole antenna with the notch characteristic not only has complete UWB performance, but also achieves antenna miniaturization while achieving notch reconfigurability as required.

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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