name: USB
full_form: Universal Serial Bus
context: on the conductive film of the plane. The detailed description of the structure is specified in figure A.A2; A USB cable crossing the ground plane and connecting the USB connector to a real functional laptop. The USB cable should be equipped with a shielded metal film, and the portion of the cable that is hanged in the air shall be covered with absorbing material or treated with quarter wave chokes. The part of the USB cable lying on the plane is covered by a conductive adhesive strip used for fixing the cable on the plane and for guarantying at the same time the superficial continuity of the conductive plane. The shielded conductive film of this part of the USB cable is connected to the conductive film of the plane and the covered strip to well ground the antenna. The length of the USB cable should be no more than 3m. Figure A.A1: The laptop ground plane phantom with DUT and the real functional laptop Figure A.A2: The structure and dimension of the laptop ground phantom
description: A Universal Serial Bus (USB) is a type of interface used for connecting devices to a computer or other devices. In the context of the 3GPP specification, it refers to a device connected to a laptop for testing purposes.
explanation: The classification as a Device is based on the context where USB is described as part of a setup involving a laptop and an antenna, indicating its role as a physical component or equipment in the test scenario.
section_title: A.1.2Laptop Ground Plane Phantom
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