Seunghoon Kim

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In battery-powered embedded systems, dedicated circuitry is used to convert stored energy into a form that can be directly used by processors. These power regulation devices seek to mask non-ideal aspects of the battery and present an ideal, fixed-voltage power source to the processor. However, this comes at a high price in terms of form factor, component(More)
In this paper, a planar three-way power divider with compact size is presented using quarter-wave long five-conductor couple line. It is analytically proved that the proposed structure allows the performance of three-way power dividers. Based on the derived equations and simulation, the three-way power divider is designed and measured at 2.0 GHz. The(More)
  • S Kim, J H Qureshi, K Buisman, L E Larson, L C N De Vreede
  • 2008
—A varactor-tuned continuously variable phase shifter based on an all-pass network is presented. Design equations for this phase shifter network are derived and presented. The phase shifter achieves an IIP3 of 52dBm with 10MHz tone-spacing at 2GHz and loss of 2.3-3.7dB with continuous 180 • phase shift at 2GHz. The total chip size including pads is 2900µm X(More)
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