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. 14, 2003
Filed:
Dec. 15, 1999
Dragan Krupezevic, Stuttgart, DE;
Veselin Brankovic, Fellbach, DE;
Masayoshi Abe, Kanagawa, JP;
Tino Konschak, Stuttgart, DE;
Thomas Dölle, Stuttgart, DE;
Sony International (Europe) GmbH, Berlin, DE;
Abstract
The present invention proposes a direct receiver technique based on one power measurement and time multiplexing of input signals. The proposed technique allows I/Q demodulation. The proposed technique bases on the passive linear three-port high frequency circuitry ( ) having two RF signal input ( ) and one output port ( ) attached to a power sensor ( ). The signals output from the power sensor ( ) is low pass filtered ( ) and supplied to a DC interface. The proposed linear three-port circuitry ( ) contains at least one RF switch and at least one passive circuit having at least one phase shifter functionality.