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This paper presents an inverse Chebyshev filter for channel selection in the baseband section of an extravehicular activity (EVA) fully integrated radio receiver. The filter is synthesized from a 4th order doubly-terminated LC ladder prototype using a leapfrog structure in order to minimize the use of active components. The cutoff frequency of the filter is digitally controlled for different channel...
An experiment study of RFID tag antennas used for the applications in the liquid solution is presented. Two RFID tag antennas operating in HF band are designed and tested. One is a spiral coil antenna using a RLC resonator and the other one is a bent dipole antenna using ultra-thin copper coil. For the invisibility purpose in the liquid tank, both antennas have been miniaturized. The communication...
A study of the bowtie antenna fed by a coplanar stripline for terahertz applications is presented in this paper. The purpose of designing the antennas is to use it as the antenna elements of the photoconductive switch devices. The broadband and radiation characteristics of the bowtie antenna are compared with a dipole antenna in the same dimension scale. The bowtie antenna has a 10:1 frequency ratio...
Xenon diflouride (XeF2) vapor has been known to be able to spontaneously etch Si isotropically at high rates up to 10 mum/min. This dry etching process does not require plasmas or catalysts, and thus causes little damage to the electronic properties. It is useful for releasing free standing structures by etching away Si sacrificial layers or for gate oxide failure analysis by etching away the backside...
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