Invention Grant
- Patent Title: Directional coupler including impedance matching and impedance transforming attenuator
- Patent Title (中): 包括阻抗匹配和阻抗变换衰减器的定向耦合器
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Application No.: US12320639Application Date: 2009-01-30
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Publication No.: US07961064B2Publication Date: 2011-06-14
- Inventor: Brian Kearns , John Costello
- Applicant: Brian Kearns , John Costello
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Main IPC: H01P5/12
- IPC: H01P5/12 ; H01P1/22
Abstract:
The present invention provides a compact weakly coupled directional coupler combined with an integrated impedance transformation and matching circuit where the impedance transformation and matching circuit facilitates the fabrication of a highly miniaturized directional coupler with optimum electrical performance where the physical dimensions of the coupled transmission lines fall inside the constraints of the fabrication process.
Public/Granted literature
- US20100194489A1 Directional coupler including impedance matching and impedance transforming attenuator Public/Granted day:2010-08-05
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