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:
Oct. 21, 2003
Filed:
Feb. 27, 2002
Oleg Pozdeev, Akersberga, SE;
Allgon AB, Taby, SE;
Abstract
The present invention relates to a four port hybrid comprising a first set ( ) of N coupled transmission lines ( A, B, C, D, E, F, G, H, I) and a second set ( ) of N coupled transmission lines ( A, B, C, D, E, F, G, H, I) where N≧4. Said coupled transmission lines in said first set ( ) are electrically connected to said coupled transmission lines in said second set ( ) to form a first spiral shaped electrical conductive path, a second spiral shaped electrical conductive path and N−1 electrically isolated transposition portions ( ) of said first and second spiral shaped electrical conductive paths. A first end of the first spiral being an input port (P ). A first end of the second spiral being a port (P ) connectable to ground. A second end of the first spiral being a first output port (P ) and a second end of the second spiral being a second output port (P ).