Coupling device, surface wave coupling method and open line surface wave wireless coverage system

Abstract

The invention discloses a coupling device, a surface wave coupling method and an open line surface wave wireless coverage system, and the coupling device comprises: a high-order mode direct coupling module which is used for coupling a first electromagnetic wave from an emitter to form a second electromagnetic wave which is propagated in a preset high-order guided wave mode; a mode conversion and filtering module which is used for converting the second electromagnetic wave into a third electromagnetic wave propagating in a plurality of superposed guided wave modes, and filtering a high-order guided wave mode in the third electromagnetic wave to obtain a fourth electromagnetic wave propagating in the preset low-order guided wave mode; and a mode matching module which is used for converting the fourth electromagnetic wave into a fifth electromagnetic wave which is propagated along the surface of the open line in a target guided wave mode. The mode purity of the embodiment is high, the effective transmission energy is high, and crosstalk is little.

Description

technical field [0001] Embodiments of the present invention relate to but are not limited to a coupling device, a surface wave coupling method, and an open wire surface wave wireless coverage system. Background technique [0002] With the improvement of people's demand for higher quality, higher definition and faster response speed content, the fifth generation (5th-Generation, 5G) communication technology came into being, which includes a number of new technologies, including multi-input Multiple output (Multiple Input Multiple Output, MIMO), beam forming (Beam forming), millimeter wave communication and other important technologies. Among them, the millimeter wave communication technology mainly refers to the communication technology that uses electromagnetic waves with wavelengths in the order of millimeters (frequency 30GHz to 300GHz) as the base station access network carrier. This technology mainly uses the large bandwidth resources brought by high frequency to improve...

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Problems solved by technology

However, for the case where the cross-sectional size of the open wire is relatively large (such as diameter D>λ, where λ is the design wavelength), since the surface wave mode of the open line tends to be simple and the coupling between the waveguide mode and these modes is extremely weak, the dielectric material The processing variability of performance parameters is close to the coupling coefficient, which makes it difficult to effec

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