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:
May. 18, 2004
Filed:
Jan. 31, 2000
NEC Corporation, , JP;
Abstract
A diversity receiver having n (integer of 2 or more) antenna branches for receiving a packet made up of a preamble field and data field includes n first switches, second switch, packet detection circuit, and demodulation section. The n first switches receive signals respectively received by the n antenna branches and a “packet receive pulse” representing that a packet is being received, and change the output destination based on the “packet receive pulse”. The second switch receives an antenna switching signal and outputs from the n first switches, and when no “packet receive pulse” is output, selects and outputs the outputs from the n first switches based on the antenna switching signal. The packet detection circuit receives an output from the second switch, and when a packet is being received, outputs a “packet receive pulse”. The demodulation section receives and demodulates all or some of the outputs from the n first switches when a “packet receive pulse” is input.