Patent ID: 6636126
Filing Date: 2003-10-21
Classification: H01P

Abstract:
A four port hybrid comprising a first set (10) of N coupled transmission lines (10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H, 10I) and a second set (20) of N coupled transmission lines (20A, 20B, 20C, 20D, 20E, 20F, 20G, 20H, 20I) where N&gE;3, said coupled transmission lines in said first set (10) are electrically connected to said coupled transmission lines in said second set (20) to form a first spiral shaped electrical conductive path, a second spiral shaped electrical conductive path and Nâˆ’1 electrically isolated transposition portions (30, 40, 50, 60, 70, 80, 90, 110) of said first and second spiral shaped electrical conductive paths, where a first end of the first spiral being an input port (P1), a first end of the second spiral being a terminated port (P4), a second end of the first spiral being a first output port (P3), a second end of the second spiral being a second output port (P2).