| 摘要 |
A tunable resonant system (100) and a method for a varying the resonant characteristics of a resonant cavity (102). The resonant cavity (102) is enclosed by a conductive material that has at least one aperture (104) for coupling the resonant cavity (102) to an RF signal propagating in a circuit device (160). A fluidic dielectric (108) having at least one among a permittivity, a permeability and a loss tangent is at least partially disposed within the resonant cavity (102). A dielectric barrier (105) can be provided within the aperture to prevent fluid (108) from escaping the resonant cavity. A composition processor (101) is adapted for dynamically changing a composition or volume of the fluidic dielectric to vary at least one among the permittivity, the permeability and/or the loss tangent to vary, or maintain constant, a center frequency, a bandwidth, a quality factor (Q) or an impedance of the resonant cavity (102).
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