A Reconfigurable Ultra-Wideband Notch Antenna for Cognitive Radio Optical Control

Abstract

The invention discloses a light-control reconfigurable ultra-wide-band notch antenna used for cognitive radio. The light-control reconfigurable ultra-wide-band notch antenna comprises an antenna radiation unit, a coplanar waveguide feeder line, an FR4 medium dielectric substrate, a symmetric trapezoidal floor, a first light-control silicon switch, a second light-control silicon switch, a third light-control silicon switch, a fourth light-control silicon switch and a fifth light-control silicon switch, the antenna radiation unit, the coplanar waveguide feeder line, the symmetric trapezoidal floor, the first light-control silicon switch, the second light-control silicon switch, the third light-control silicon switch, the fourth light-control silicon switch and the fifth light-control silicon switch are positioned on a same side of the FR4 dielectric substrate, and the coplanar waveguide feeder line is positioned in the middle of the symmetric trapezoidal floor; the antenna radiation unit comprises a U-shaped monopole antenna which is connected with the coplanar waveguide feeder line, a bent symmetric groove is formed in a U-shaped surface-mount-device monopole and is symmetric according to the coplanar waveguide feeder line in shape. The light-control reconfigurable ultra-wide-band notch antenna has the advantages of small size, high omnidirectivity, wide frequency band, small switch electromagnetic interference and the like and is suitable for the field of cognitive radio.

Description

technical field [0001] The invention relates to the radio field, in particular to a reconfigurable ultra-wideband notch antenna for cognitive radio light control. Background technique [0002] With the development of wireless communication services, the demand for spectrum is increasing rapidly, and spectrum resources are increasingly scarce, which has become one of the bottlenecks restricting the development of wireless communication. Cognitive radio is an intelligent wireless communication system that can automatically sense the surrounding wireless environment and adjust internal radio parameters (such as power, frequency, modulation and coding schemes, etc.) When users cause interference, use idle spectrum resources for communication. Corresponding to the radio frequency terminal, the reconfigurable ultra-wideband notch antenna can be applied to the cognitive radio system. If a wide frequency band is not used by authorized users during spectrum sensing, the system can u...

AI Technical Summary

Problems solved by technology

[0003] Most reconfigurable ultra-wideband notch antennas now use electrical switches, which will affect the electromagnetic radiation performance of the antenna; some use mechanical rotation structures, which will increase the difficulty of post-production antennas and are not conducive to miniaturization

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