The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2012
Filed:
Dec. 23, 2009
Ki-jin Kim, Gwangju-Si, KR;
Kwang-ho Ahn, Yongin-Si, KR;
Ki-Jin Kim, Gwangju-Si, KR;
Kwang-Ho Ahn, Yongin-Si, KR;
Abstract
A beamforming RF vector modulator is provided. The beamforming RF vector modulator includes a first amplification part for amplifying an input single RF signal and outputting differential RF signals of different phases; an RF signal converter for receiving the differential RF signals and outputting four signals I+, I−, Q+, and Q− of different phases, the RF signal converter comprising a polyphase filter which is virtually opened by resonance of an output terminal comprising a transmission line load; a Variable Gain Amplifier (VGA) part comprising a I VGA which varies an amplitude and a polarity of the signals I+ and I−, and a Q VGA which varies the amplitude and the polarity of the signals Q+ and Q−according to a control signal; and an RF signal synthesizer for synthesizing an output current of the I VGA and an output current of the Q VGA.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile