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The emergence and evolution of any package technology is driven by market trends as experienced by the end application. With the maturation of the mobile market, the trends for Smartphone and other mobile devices are more than ever for lower cost. Meanwhile, a higher degree of functionality and performance, thinner profile, and longer battery life are some of the additional market drivers seen in...
In this paper, a dongle-type RFID PIFA (Planar Inverted F-Antenna) structure with a resonance frequency of 920 MHz is optimized taking into account the robustness against noise factors. To achieve this, a global optimum is first sought out by means of the evolution strategy and then the robust design of the optimized antenna structure is obtained by introducing the Taguchi loss function. The validity...
An embedded DAC requires a large number of input transistors (=2N+1 for N-bit interpolation) in its amplifier. Moreover, the transistors require large width and length for accurate matching, leading to an area penalty in the amplifier for high bit interpolation (e.g. N>3). In this paper, an area-efficient and accurate interpolation method that uses variable-current control (VCC) for 10b mobile...
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