Invention Application
- Patent Title: COMBINED BALUN TRANSFORMER AND HARMONIC FILTER
- Patent Title (中): 组合式巴伦变压器和谐波滤波器
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Application No.: US13668743Application Date: 2012-11-05
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Publication No.: US20130113300A1Publication Date: 2013-05-09
- Inventor: Michael F. Zybura , Marcus Granger-Jones
- Applicant: RF MICRO DEVICES, INC.
- Applicant Address: US NC Greensboro
- Assignee: RF MICRO DEVICES, INC.
- Current Assignee: RF MICRO DEVICES, INC.
- Current Assignee Address: US NC Greensboro
- Main IPC: H02J1/02
- IPC: H02J1/02

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.
Public/Granted literature
- US09294067B2 Combined balun transformer and harmonic filter Public/Granted day:2016-03-22
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