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:
Mar. 30, 2004
Filed:
Oct. 04, 2002
Abe Masayoshi, Tokyo, JP;
Yukitoshi Sanada, Tokyo, JP;
Dragan Krupezvic, Stuttgart, DE;
Veselin Brankovic, Fellbach, DE;
Other;
Abstract
A high performance demodulator, capable of realizing further broadband characteristics, low distortion, a low power consumption, and small fluctuation in characteristics against fluctuations in temperature and fluctuations over time compared with a conventional multi-port demodulators, wherein a two-terminal first phase shifter three-terminal second branch circuit two-terminal second phase shifter and three-terminal third branch circuit are connected in series between a first signal input terminal TINSr for a reception signal and a second signal input terminal TINSlo for a local signal, a third terminal c of a first branch circuit is connected to a first power detection circuit a third terminal c of the second branch circuit is connected to a second power detection circuit and a third terminal c of the third branch circuit is connected to a third power detection circuit and comprising an N-port signal-IQ signal conversion circuit for receiving output signals P P and P of the first to third power detection circuits to and converting the same to demodulation signals, that is, in-phase signal I(t) and a quadrature signal Q(t), by a computation circuit.