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In this paper, a line driver for HomePlug AV powerline communication system has been described. The proposed line driver includes a damping factor control (DFC) network which suppressed the open loop high frequency peaking effect to improve the stability for the various characteristic impedance of powerline. The line driver was fabricated in TSMC 0.18-μm CMOS technology and occupied 0.195 mm2 active...
A calculation method for the characteristic impedance of transmission lines with any perturbation structure is proposed. An analytical procedure is described with proper equations based on simple transmission line theories. The obtained characteristic impedance by the proposed method shows an almost constant value, while it fluctuates severely depending on the frequency in the conventional method...
In this paper, we propose a new extraction method for the characteristic impedance and effective dielectric constant of a microstrip line. It extracts the characteristic impedance and effective dielectric constant of a microstrip line that uses the results of S-parameters through the EM-simulation. And it also extracts the characteristic impedance and effective dielectric constant of microstrip line...
A circular microstrip patch antenna with a circular polarization (CP) sense using a slotted ground structure is proposed at 2.4 GHz. To generate a CP sense, an unequal cross-shaped slot on a ground plane is utilized as a perturbation. The proposed antenna has two input ports: one for a right-handed (RH) CP and the other one for a left-handed (LH) CP. This configuration has benefit of a separated input...
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