公开(公告)号：JPH02113601A

公开(公告)日：1990-04-25

申请号：JP21151189

申请日：1989-08-18

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： JIUSETSUPE FUIGURIA ,  DABUIDE FUORIGO ,  FURABUIO MAAKIYURIO ,  DARIO SABUINI

IPC: H01P1/161 ,  H01P1/165 ,  H01P1/18

Abstract: PURPOSE: To provide a coaxial waveguide phase shifter small in size and capable of being designed through the accurate synthesis of a uniform electric network by constituting the phase shifter of hollow external and internal cylindrical conductors and inserting the prescribed number of number of mutually parallel irises between both conductors. CONSTITUTION: The phase shifter is provided with the hollow external and internal cylindrical conductors CE, CI and the prescribed number N of irises I are inserted between both conductors EC, CI and fixed on the external guide. Each of irises is constituted of two opposite plates and has circular segment shapes whose straight sides are parallel with each other. The electric characteristics of the phase shifter depend upon the W/D, D/d, T, Li, and N of each iris. A uniform four-pole conductor in a cell constituted of each iris is obtained by the reactance of the iris itself and a phase shift curve to be led by the cell in accordance with the W/D and T of the iris can be prepared. Consequently the phase shifter can be used for automatic design.