A pattern reconfigurable broadband flexible electric small antenna for smart transportation

Abstract

The present invention relates to a directional diagram reconfigurable broadband flexible electrically small antenna applied to intelligent transportation, belonging to the technical field of antenna designs. The antenna comprises a dielectric substrate, a parasitic oscillator, an excitation oscillator and a coaxial cable; the parasitic oscillator and the excitation oscillator are respectively closely arranged at the upper and lower surfaces of the dielectric substrate; the parasitic oscillator is formed by a pair of improved parasitic patches in an Egypt battleax shape, and is arranged in a mirror symmetry mode about a middle shaft; the shape of the excitation oscillator corresponds to the shape of the parasitic oscillator, four PIN switch diodes and six coil inductors are loaded on the excitation oscillator, and a direct current offset power source is added to achieve electrically controllable beam reconfiguration; and the inner and outer cores of the coaxial cable are respectively connected with two branchknots of the center of the excitation oscillator. The directional diagram reconfigurable broadband flexible electrically small antenna effectively utilizes the four PIN switch diodes, and designs an electrically small antenna having two directional diagram reconfigurable modes and having broadband and flexible conformal performances.

Description

technical field [0001] The invention belongs to the technical field of antenna design, and relates to a reconfigurable broadband flexible electric small antenna with a pattern applied to intelligent transportation. Background technique [0002] With the rapid development of next-generation information technologies such as the Internet of Things, space perception, cloud computing, and mobile Internet, the era of Internet of Everything and artificial intelligence has opened a new chapter in urban development. Smart transportation has entered people's lives, providing a more intelligent choice for people's travel. For example, in the ITS intelligent transportation system, the car, as a network node, needs to send and receive various signals. The communication between vehicles and the information exchange between vehicles and base stations are inseparable from antennas. This requires the antenna to meet the requirements of the scene. One is to install the antenna in an extrem...

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Problems solved by technology

The current difficulty is that the antenna with an electrically small size has narrow bandwidth and poor directivity, which is still far from practical applications, not to mention the reconfigurable performance of the pattern. Therefore, the design of an electrically small antenna with broadband, flexibility, and reconfigurable pattern Antennas have great application prospects

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