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:
Nov. 06, 2012
Filed:
Sep. 26, 2008
Hyoung Soo Lim, Daejeon, KR;
Ho Min Eum, Daejeon, KR;
Sung Ik Park, Daejeon, KR;
Jae Hyun Seo, Daejeon, KR;
Yong Tae Lee, Daejeon, KR;
Yong Hoon Lee, Daejeon, KR;
Sung-hoon Kim, Daejeon, KR;
Heung Mook Kim, Daejeon, KR;
Jong Soo Lim, Daejeon, KR;
Soo IN Lee, Daejeon, KR;
Hyoung Soo Lim, Daejeon, KR;
Ho Min Eum, Daejeon, KR;
Sung Ik Park, Daejeon, KR;
Jae Hyun Seo, Daejeon, KR;
Yong Tae Lee, Daejeon, KR;
Yong Hoon Lee, Daejeon, KR;
Sung-Hoon Kim, Daejeon, KR;
Heung Mook Kim, Daejeon, KR;
Jong Soo Lim, Daejeon, KR;
Soo In Lee, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A repeater having different input and output frequencies converts a signal received with the input frequency to a first intermediate frequency signal based on a local oscillating frequency for intermediate frequency conversion, and converts the first intermediate frequency signal to a second intermediate frequency signal by performing digital processing on the first intermediate frequency signal. Then, the repeater generates a first frequency tone signal that corresponds to a difference between the input and output frequencies, and generates a second frequency tone signal from the local oscillating frequency for intermediate frequency conversion and the first frequency tone signal. The repeater up-converts the second intermediate frequency signal to the output frequency based on the second frequency tone signal, and transmits the signal.