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US Patent 7420423 Active balun device

Patent 7420423 was granted and assigned to Electronics and Telecommunications Research Institute on September, 2008 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee

Electronics and Telecommunications Research Institute

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

Patent Inventor Names

Hyun Kyu Yu2

Young Jae Lee2

Date of Patent

September 2, 2008

Patent Application Number

11431982

Date Filed

May 11, 2006

Patent Citations Received

US Patent 11791567 Multi-beam active phased array architecture with independent polarization control

US Patent 12088016 Multi-beam active phased array architecture with independent polarization control

1

Patent Primary Examiner

Patricia Nguyen

Patent abstract

An active balun device is provided. The active balun device includes: a differential input portion for receiving an external single input signal to output two complementary differential signals; and a differential amplifier connected to the differential input portion in cascade to amplify the two differential signals received from the differential input portion. Thus, the active balun device has a sufficient gain and a desired bandwidth in a semiconductor circuit.

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