| 摘要 |
This holding part 9 for microwave circuits, especially for circuits of three-plate type, is a holding part arranged as bracing between two earth plates 40, 50 and having a profile with a lateral groove of substantially rectangular shape for inserting and holding, at a level intermediate between the two plates, a unit of the microwave circuit, especially a transmission line 30. According to the invention, this part is formed by a part of revolution generated by rotation about a central axis of the said profile having the lateral groove, this part being provided at at least one of its ends, the upper or the lower, with a centring pin 11 cooperating with a respective orifice made in the earth plate 40 into which this pin is placed. Preferably, it is formed of two separate nestable elements, namely a lower element 10 and an upper element 20, the lower element 10 having a substantially plane bearing surface facing towards the top 13 and the upper element 20 having a substantially plane bearing surface facing towards the bottom 23, these two bearing surfaces 13, 23 being held some distance apart when the two elements 10, 20 are joined, so as to define the said groove for insertion and for holding, the unit 30 of the microwave circuit being grasped between the two bearing surfaces 13, 23 upon the nesting of the two elements 10, 20. <IMAGE>
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