Invention Application
US20130113300A1 COMBINED BALUN TRANSFORMER AND HARMONIC FILTER 有权
组合式巴伦变压器和谐波滤波器

COMBINED BALUN TRANSFORMER AND HARMONIC FILTER
Abstract:
In one embodiment, a balanced to unbalanced transformer utilizes a crossover configuration such that some portion of the secondary coil (inductor) is shared between two resonators (capacitors). Adding a first capacitor in parallel with a portion of the secondary inductor creates a first harmonic trap (filter), and also efficiently uses the secondary coil (inductor) as a resonating element.Adding a second capacitor which shares (crossover configuration) a portion of the secondary inductor with the first capacitor creates a second harmonic trap (filter), which may be tuned to the same harmonic as the first harmonic trap, or may be tuned to a different harmonic.
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