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An antenna switch module using PIN (P region-I region-N region) diode for GSM (Global System for Mobile communications) application has been designed and fabricated. By taking advantage of three-dimensional integration of the LTCC (low-temperature co-fired ceramic) substrate and through a novel design of miniature lumped-element realization of transmission line, the size of proposed GSM switch is...
A single-layer frequency selective surface (FSS) is developed with electrically small elements and two tunable passbands for WLAN application. Each FSS unit consists of a loop wire in the top metal layer and its complementary etched in the bottom metal layer, which can provide two transmission poles separated by a transmission zero. The structure is optimized so as to meet the specification of miniaturization...
We demonstrate that, in addition to the conventional high-order parasitic effects such as skin and proximity effect, as well as substrate coupling, a novel term of substrate parasitic inductance needs to be introduced in the equivalent circuit for silicon-based transmission lines and on-chip spiral inductors in order to fully describe the nonlinear features of substrate-characteristic functions at...
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