Detection device and detection method

Abstract

The application relates to a detection device and a detection method for detecting electromagnetic characteristics of a casing having an electromagnetic band gap structure. The detection device comprises a first base, a second base, a probe set and a controller, wherein the first base is spaced apart from the second base to form a cavity there-between; the probe set is coupled to one side of the second base facing the cavity; the probe set comprises a plurality of probes spaced apart from each other and distributed to the second base; one of the plurality of probes serves as a signal transmitting end, and the remaining ones serve as signal receiving ends; the controller is electrically connected to the probe set and configured to calculate a signal transmission coefficient according to theelectromagnetic signal emitted by the signal transmitting end and the electromagnetic signal received by the signal receiving ends. The detection device can activate the probe set, the probe set cantransmit the electromagnetic signal of a preset frequency and receive the electromagnetic signal propagating in the cavity, and the controller calculates the signal transmission coefficient of the electromagnetic signal, thereby conveniently obtaining the electromagnetic characteristics of the casing to be detected.

Description

technical field [0001] The present application relates to the field of consumer electronic devices, and in particular, to a detection device and a detection method, which are used to detect electromagnetic characteristics of a casing of an electronic device. Background technique [0002] With the development of science and technology, electronic devices such as mobile phones have been greatly developed, the design level and technology of mobile phones are also constantly improving, and more and more mobile phones have begun to use metal back covers. The metal back cover is undoubtedly a big obstacle for the antenna design of the mobile phone. Due to the continuous efforts of engineers, there are many design solutions for metal casings in antenna design. Although the performance of the antenna satisfies the requirements of mobile phone communication, in the existing technical solution, the signal radiated by the antenna still propagates on the all-metal back cover. The prop...

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Problems solved by technology

[0004] However, at present, the shell integrated with the EBG structure can only determine the frequency range of the surface wave bandgap of the EBG structure through calculation before designing the shell. When the EBG structure is integrated into the shell, there is currently no suitable detection equipment to detect it. The electromagnetic performance of the housing, so whether the housing integrated with the EBG structure can effectively avoid or reduce the coupling between the main antenna and the diversity antenna, there is still no effective detection scheme

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