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In this study, a varactor-loaded slot-ring resonator (SRR) is investigated and applied in the design of tunable common-mode (CM) suppression filter for high-speed differential signals. Two tunable capacitors (realised by two kinds of varactors) with different values are symmetrically added to the SRR. Under the stepped-width structure of the SRR, the frequency-tuning principle is studied. It can be...
This work presents a study on frequency tunable ability based on varactor-loaded quarter wavelength uniform-impedance resonator (UIR). The quantitative analysis of the tunable range of the fundamental resonant frequency (→1) versus capacitance under different varactor-located position along the proposed quarter wavelength UIR is given. The methods of realizing the bidirectional tuning of →1 and independent...
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