Resonator cavity end wall assembly

摘要

An electromagnetic resonator (10) comprises a waveguide body (12) having a generally tubular side wall (14) and a pair of end wall assemblies (18). The end wall assembly (18) includes a bowed aluminum plate (22) and an INVAR disk (24), attached to one another at the periphery thereof. The INVAR disk (24) includes a relatively thick outer annular portion (30) and a relatively thin inner circular portion (32). The bowed aluminum plate (22) bows in response to increased temperature, thereby counteracting expansion of the waveguide body (12). <IMAGE>