Method of manufacturing a waveguide filter and waveguide filter

Details Method of manufacturing a waveguide filter and waveguide filter Method of manufacturing a waveguide filter and waveguide filter

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.

REFERENCES:
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patent: 3157847 (1964-11-01), Williams
patent: 3587008 (1971-06-01), Tsuda
patent: 3737816 (1973-06-01), Honicke
patent: 3949327 (1976-04-01), Chapell
patent: 3952270 (1976-04-01), Louvel
patent: 4060779 (1977-11-01), Atia et al.
patent: 4439748 (1984-03-01), Dragone

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