Antenna with grounded U-shaped high-impedance surface metal strips and wireless communication device

Abstract

Disclosed are a grounded antenna having U-shaped high-impedance surface metal strips and wireless communication device having said antenna. The antenna is disposed inside of a housing, and comprises an antenna radiation unit and a ground plate thereof; disposed in intervals on the ground plate are multiple high-impedance surface units; each high-impedance surface unit consists of three high-impedance surface metal strips connected to one another, arranged to form a U-shape; a high-impedance surface through hole is made at the bottom of the U-shape, and through holes connect the high-impedance surface metal strips of the high-impedance surface units. By means of multiple U-shaped high-impedance surface units, surface waves are repressed or deterred from transmitting along the surface, and incident plane waves perpendicular to the surface are reflected at the same phase. High-impedance surface has the characteristics of suppressing surface waves, and can therefore, when placed around an antenna, reduce the radiation toward a person's head, lower the specific absorption rate without reducing the radiation capability of the antenna or compromising communication quality. The present invention is universally applicable.

Description

Technical field [0001] The present invention relates to the field of antennas of wireless communication devices. More specifically, the improvement relates to an antenna with a U-shaped high-impedance surface metal strip grounding and a wireless communication device. Background technique [0002] The radio waves emitted by the wireless communication device during the communication process expose the user to measurable radio frequency electromagnetic radiation; such as using mobile phones and other mobile terminals themselves when they are talking, often put their head in the electromagnetic radiation field emitted by the mobile phone ; To this end, governments including China have formulated comprehensive and safe guidelines and regulations to manage and restrict radio frequency energy exposure; among them, the Specific Absorption Rate (SAR) is a very important evaluation parameter. , Means electromagnetic wave absorption ratio, which is the electromagnetic wave energy absorption...

AI Technical Summary

Problems solved by technology

[0003] At present, mobile terminals have been designed to be used within these extremely strict limits, so various devices and methods for reducing SAR are being developed; for example, attaching electromagnetic wave-absorbing materials to mobile terminals, or The layout of the optimized radio frequency induction current, and complex antenna design are used to reduce the specific absorption rate, etc. However, these design methods are often greatly affected by the type of mobile terminal, and are not universal and universally applicable

[0004] Therefore, the existing technology still needs to be improved and developed

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