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:
Jan. 05, 2016
Filed:
Aug. 10, 2009
Ming-da Tsai, Miaoli County, TW;
Jing-hong Conan Zhan, HsinChu, TW;
Arun Natarajan, White Plains, NY (US);
Ming-Da Tsai, Miaoli County, TW;
Jing-Hong Conan Zhan, HsinChu, TW;
Arun Natarajan, White Plains, NY (US);
MEDIATEK INC., Science-Based Industrial Park, Hsin-Chu, TW;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A phase shifter and related load device are provided. The phase shifter includes a phase shifter core and load devices. The phase shifter core has an input port for receiving an input signal, an output port for outputting an output signal, and connection ports. The load devices are coupled to the connection ports, respectively. At least one of the load devices includes first varactor units each having a first node and a second node, where first nodes of the first varactor units are coupled to a first voltage, second nodes of the first varactor units are respectively coupled to a plurality of second voltages, and the second voltages include at least two voltages different from each other. The phase shifter and related load device are capable of mitigating effects resulted from varactor's non-linear C-V curve.