Widely Tunable Variable Capacitor With Switching and Latching Mechanisms

A widely tunable variable capacitor using mechanical switching and a reversible latching mechanism was developed. This variable capacitor can increase the total capacitance by utilizing three discrete switches to sequentially connect four sets of fixed capacitors arranged in parallel. Continuous fin...

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Bibliographic Details
Published inIEEE electron device letters Vol. 36; no. 2; pp. 186 - 188
Main Authors Baek, Dae-Hyun, Eun, Youngkee, Kwon, Dae-Sung, Kim, Min-Ook, Chung, Taeyoung, Kim, Jongbaeg
Format Journal Article
LanguageEnglish
Published IEEE 01.02.2015
Subjects
Actuators
Capacitance
Capacitors
Electrodes
Latches
RF MEMS
Switches
Switches Reversible latch
Tuning
Variable capacitor
Wide tuning range
switches
Variable capacitor
RF MEMS
wide tuning range
reversible mechanical latch
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Summary:A widely tunable variable capacitor using mechanical switching and a reversible latching mechanism was developed. This variable capacitor can increase the total capacitance by utilizing three discrete switches to sequentially connect four sets of fixed capacitors arranged in parallel. Continuous fine tuning is achieved by closing gaps with these interdigitated capacitors, and connected states are maintained through the use of a mechanical latching mechanism. By combining switching and gap-closing modes, a maximum tuning ratio of 9.42 was obtained.
ISSN:0741-3106
1558-0563
DOI:10.1109/LED.2014.2378272