Micromachined frequency-variable impedance tuners using resonant unit cells

This paper presents a new type of micromachined impedance tuners using frequency-variable resonant unit cells. Impedance tuners using resonant unit cells realized by tunable micromachined capacitors showed a wide tuning range equivalent to almost two quadrants of the Smith chart with a high maximum...

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Bibliographic Details
Main Authors: Sanghwa Jung, Kyungteh Kang, Jae-Hyoung Park, Ki-Woong Chung, Yong-Kweon Kim, Youngwoo Kwon
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
Circuit noise
Circuit optimization
Impedance
Resonance
Resonant frequency
Tunable circuits and devices
Tuned circuits
Tuners
Tuning
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Summary:This paper presents a new type of micromachined impedance tuners using frequency-variable resonant unit cells. Impedance tuners using resonant unit cells realized by tunable micromachined capacitors showed a wide tuning range equivalent to almost two quadrants of the Smith chart with a high maximum VSWR of 21.2 at Ka-band. Frequency variability is also provided through the use of J-inverters with tunable capacitors. Micromachined tuners are very promising for low-loss tuning of the monolithic circuits as well as accurate noise and power characterization.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2001.966900