Abstract: Smart cards used in mobile phone, namely Subscriber Identity Module (SIM) cards, became a place where various value added services are proposed. SIM cards, in addition to authenticating users to the cellular network, contain a secure storage area, which provides necessary security conditions and performs data encryption and decryption. Mobile Network Operators (MNOs) and service providers such as banks use this area to provide value added services to the users. Security required value added services such as mobile financial services, e-government services, digital signature services can also be offered via SIM cards which require end-to-end secure data exchange between the service provider and the SIM card. In this paper, we analyze the current situation deeply, list several publications those are somewhat related to the subject, and put forward the risks and challenges with the problem.

• Publication Date: 27-Aug-2014
• DOI: 10.15224/978-1-63248-024-8-16
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Abstract: Design of a compact circular micro strip antenna with band notched Ultra-Wide Band (UWB) characteristics has been proposed. The proposed antenna consists of circular radiating patch with a micro strip line type feed structure and employs a simple defected ground structure (DGS) in a rectangular shape to achieve UWB operation. A notch is also designed to avoid the function of the antenna at 5.5 GHz to reject WLAN2 band from 5.15 to 5.825 GHz. The crux of this design strategy is that a ‘C’ shaped slot has been embedded onto the patch antenna to achieve band-stop filtering action at above mentioned frequency. Simulation of the design is done with CST MW Studio 2012 Electromagnetic Simulator.

• Publication Date: 27-Aug-2014
• DOI: 10.15224/978-1-63248-024-8-17
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