Frequency reconfigurable antenna based on substrate integrated waveguide and preparation method thereof

Abstract

The embodiment of the invention discloses a frequency reconfigurable antenna based on a substrate integrated waveguide and a preparation method thereof. The antenna comprises the substrate integratedwaveguide, wherein an annular slot and a long slot are formed in the upper surface of the substrate integrated waveguide; an annular patch is formed while the annular gap is formed; a plurality of PINdiodes are arranged in the annular gap, the two ends of each diode are connected with the upper surface of the substrate integrated waveguide and the annular patch, and connection or disconnection between the annular patch and the upper surface of the substrate integrated waveguide is controlled by controlling the bias state of the diodes; when the diode is conducted, the annular patch is connected with the upper surface of the substrate integrated waveguide, and the working state of the first frequency band is realized through long slot radiation on the upper surface; and when the diode is cut off, the annular patch is disconnected with the upper surface of the substrate integrated waveguide, the working state of the second frequency band is achieved through radiation of the annular patch on the upper surface, and switching of the antenna between different bands can be achieved by controlling the bias state of the diode.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a frequency reconfigurable antenna based on a substrate integrated waveguide and a preparation method thereof. Background technique [0002] In recent years, the wireless communication system is developing towards the direction of large capacity and miniaturization. While the volume of the system is further reduced, the function is further complicated, the number of wireless devices increases, and the proposal of reconfigurable antenna enables a pair of antennas to realize The function of multiple antennas is possible, which is of great significance for increasing the capacity of the communication system and reducing the weight and volume of the system. [0003] However, the existing mainstream antennas can only realize the connection on a single frequency band. With the progress of society and the development of science and technology, people have more and more re...

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Problems solved by technology

[0003] However, the existing mainstream antennas can only realize the connection on a single frequency band. With the progress of society and the development of science and technology, people have more and more requirements for antenna work, and the accuracy requirements are becoming more and more strict. However, the existing antenna structure is large Most of them work in a single frequency band, and the free switching of the working frequency band cannot be realized

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