发明名称 |
VERFAHREN ZUM HERSTELLEN EINES WELLENLEITERFILTERS, SOWIE NACH DIESEM VERFAHREN HERGESTELLTES WELLENLEITERFILTER |
摘要 |
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. |
申请公布号 |
DE3424496(A1) |
申请公布日期 |
1985.01.17 |
申请号 |
DE19843424496 |
申请日期 |
1984.07.04 |
申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
JAN DIELEMAN,PIETER;DE JONG,ROELOF PIETER;GOEDBLOED,WILLEM;MARIA OOSTERWIJK,THEODORUS |
分类号 |
H01P1/208;H01P11/00;(IPC1-7):H01P1/208 |
主分类号 |
H01P1/208 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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