Bae Systems, Inc.

Huawei Device Co., Ltd.

Yang Hao

Hanyang Wang

Shuhui Sun

Hai Zhou

Dingliang Wen

A communications terminal includes an antenna Which includes a circuit hoard, a radiator, two feeds, and two coupling structures. The radiator is disposed around an outer edge of the circuit board, and a ring-shape slot is formed between the outer edge of the circuit board and the radiator. A first feed is electrically coupled to a first coupling structure, the first coupling structure is coupled to the radiator along one direction, and a current in a first polarization direction is formed on the circuit board by using the radiator and the ring-shape slot. A second feed is electrically coupled to a second coupling structure, the second coupling structure is coupled to the radiator along another direction, and a current in a second polarization direction is formed on the circuit board by using the radiator and the ring-shape slot. A specific included angle is formed between the above two directions.

Communications terminal

A lens design method is disclosed for designing a lens to reshape an actual far-field radiation pattern of a radiation source, such as a spiral antenna, to a preferred far-field radiation pattern. The method comprises:&#x2014;determining a preferred far-field radiation pattern of the radiation source;&#x2014;deriving a corresponding near-field radiation pattern from the preferred far-field radiation pattern;&#x2014;determining an actual near-field pattern of the radiation source;&#x2014;mapping an electric field and a magnetic field of the actual near-field radiation pattern to the derived near-field radiation pattern using a transfer relationship, the transfer relationship comprising material parameters which characterize the lens; and,&#x2014;determining the material parameters.

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London, United Kingdom

Yang Hao