Dual-band Dual Circular Polarization Hybrid Dielectric Resonator Antenna for Vehicle Built-in

Abstract

The invention provides a dual-band dual-circular polarization mixed dielectric resonator antenna for vehicle built-in, including a dielectric resonator, a dielectric substrate, a metal ground plane and a microstrip line; the microstrip line is arranged at the center of the bottom of the dielectric substrate, and the metal The ground plane is set on the surface of the dielectric substrate, and a gap is opened in the middle of the metal ground plane, and the gap is perpendicular to the bottom microstrip line; the dielectric resonator is set directly above the gap; the dielectric resonator includes a prism, and the upper part of the prism is provided with a mixing cylinder , the mixing cylinder is a hollow cylinder, the hollow cylinder is provided with a liquid, and the hollow cylinder is a metal dielectric; the upper and lower corners of the prism are provided with triangular prism-shaped gaps; through the gap coupling feed, the fundamental mode and High-order mode to obtain dual-band, the hybrid antenna is achieved by adding liquid to the hollowed-out cylindrical part, which expands the high-frequency bandwidth and has little effect on low-frequency, the gain of the antenna is improved after adding water, and water increases the gain at high frequencies Increase.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a dual-frequency-band dual-circular-polarization mixed-dielectric resonator antenna built in a vehicle. Background technique [0002] With the development of automotive technology, cars have become an important part of everyday life. As one of the important functional accessories for sending and receiving electromagnetic waves, the car antenna has attracted more and more attention for its high integration and multi-functionality. The traditional vehicle antenna is a whip antenna, which is located outside, which will not only increase the wind resistance of the car during driving, but may also cause damage to the antenna due to external environmental influences. The built-in vehicle antenna can reduce external impact, neither affect the appearance of the vehicle body, nor affect the wind resistance of the vehicle body, but also provide the required signal for th...

AI Technical Summary

Problems solved by technology

[0005] To sum up, in order to complete the design of the vehicle built-in dielectric antenna, the existing antenna technology can independently meet the performance requirements, or can achieve beautiful decoration but limited adaptability, and cannot fully meet the needs

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