Patents by Inventor Kihwa Choi

Kihwa Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Radio frequency transceiver
    Patent number: 8923368
    Abstract: A radio frequency transceiver which can support various frequency conversion schemes is provided. The radio frequency transmitter includes a first low pass filter, a second low pass filter, a first filter input port connected to an input terminal of the first low pass filter, a second filter input port connected to an input terminal of the second low pass filter, a first filter output port connected to an output terminal of the first low pass filter, a second filter output port connected to an output terminal of the second low pass filter, an I/Q modulator, an I input port connected to an I input terminal of the I/Q modulator, a Q input port connected to a Q input terminal of the I/Q modulator; and a Radio Frequency (RF) output port connected to an output terminal of the I/Q modulator.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ikgon Kim, Kihwa Choi