Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1986-12-09
1987-11-10
Goldberg, Howard N.
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
29464, 29600, 29DIG4, 315 35, 333239, 72267, H01P 120, H01P 1100, B21C 2318
Patent
active
047060514
ABSTRACT:
A waveguide filter (43) comprising a series of resonant cavities (45) separated by walls (47) each formed with an iris opening (49) is assembled from two complementary box-like bodies (25) each having an open side (31) and internal partitions forming portions of the walls (47) between the cavities. Each box-like body is manufactured by impact extrusion using an open-topped box-like die (1) in which a slug of material (5) is placed, and a punch (7) which has smaller dimensions than the die and slots (11) for forming the respective partitions. The punch is driven into the die with a force such that the material of the slug is displaced into the slots in the punch and into the space between the punch and the die.
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De Jong Roelof P.
Dieleman Pieter J.
Goedbloed Willem
Oosterwijk Theodorus M.
Goldberg Howard N.
Kraus Robert J.
U.S. Philips Corporation
Wallace Ronald S.
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