公开(公告)号：BR0101163A

公开(公告)日：2001-10-30

申请号：BR0101163

申请日：2001-03-27

Applicant: CIT ALCATEL

Inventor： BROAD GRAHAM ,  STEER LEWIS

IPC: H01P1/208 ,  H01P1/30

公开(公告)号：CA2342063A1

公开(公告)日：2001-09-28

申请号：CA2342063

申请日：2001-03-27

Applicant: CIT ALCATEL

Inventor： BROAD GRAHAM ,  STEER LEWIS

IPC: H01P1/208 ,  H01P1/30 ,  H01P1/207

Abstract: This invention discloses an improved thermal compensation arrangement for a microwave filter of the type comprising at least one cavity defined by a metal side wall having a low coefficient of thermal expansion, such as invar, and lightweight metal end walls, such as aluminium, having good thermal and electrical conductivity, but a high coefficient of thermal expansion. The present invention comprises a characteristic arrangement of annular grooves and slots in the end walls that mechanically isolate the end walls from the side wall fixed thereto, to avoid distortion of the cavity with changes in temperature.

公开(公告)号：AU1823701A

公开(公告)日：2001-10-04

申请号：AU1823701

申请日：2001-01-31

Applicant: CIT ALCATEL

Inventor： BROAD GRAHAM ,  STEER LEWIS

IPC: H01P1/208