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A Low Impedance and Short Guided-Wavelength Microstripline Employing a Periodically Perforated Ground Metal and Its Application to Miniaturized Ratrace MMIC  

Yun, Young (Semiconductor Device Research Center, Matsushita Electric Industrial)
Publication Information
Abstract
In order to realize miniaturized and low-impedance MMIC passive component, a novel microstripline structure employing periodically perforated ground metal was proposed. The novel microstripline structure showed much lower impedance, and shorter guided-wavelength than conventional one. Using the novel microstripline with periodically perforated ground metal, a miniaturized 15 $\Omega$ ratrace was fabricated. The line width of the ratrace was 20 $\mu\textrm{m}$, and the size of it was 0.375 mm$^2$, which is 9.3 % of conventional one. The ratrace exhibited good RF performances from 20 to 30 GHz.
Keywords
Periodically Perforated Ground Metal; Low-Impedance; MMIC; Ratrace;
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