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:
Jul. 27, 1999
Filed:
Nov. 27, 1996
Applicant:
Inventors:
Tetsuya Kochi, Mukoh, JP;
Hiroaki Tanaka, Mishima-gun, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
375200 ;
Abstract
A spread-spectrum communication apparatus includes a receiving antenna, amplifiers, band-pass filters, a threshold filter circuit, a despreader, a base-band demodulation circuit, and other circuit stages. The threshold filter circuit is connected in series before the despreader. The threshold filter circuit has a frequency-band width covering the band width of a spread signal and cuts interference waves at certain levels at each frequency within the frequency band. The threshold filter circuit includes a magnetostatic wave device.