Non-reciprocal circuit device, communication equipment, and method for assembling the non-reciprocal circuit device

Abstract

A non-reciprocal circuit device includes a holder and a gyromagnetic component assembly (1). The holder includes a casing member (3) and a lid member (4). The casing member (3) has a bottom plate (34) and a plurality of side walls (31-33) spaced apart from each other and rising from a periphery of the bottom plate (34), each side wall (31-33) having a depression (36) in an edge opposed to anotherside wall in a direction of the periphery. The lid member (4) has a top plate (44) and a plurality of side walls (41-43) spaced apart from each other and hanging from a periphery of the top plate (44), each side wall (41-43) having a projection (46) on an edge opposed to another side wall in a direction of the periphery. The lid member (4) is coupled to the casing member (3) with the projection (46) fitted in the depression (36). When the projection (46) is fitted in the depression (36),a top plate-side end face (461) of the projection (46) is pressed against an opposing inner face (361) of the depression (36) while a bottom plate-side end face (462) of the projection (46) is spaced apart from an opposing inner face (362) of the depression (36).

Description

technical field [0001] The invention relates to a non-reciprocal circuit element, a communication device using the non-reciprocal circuit element and an assembly method of the non-reciprocal circuit element. Background technique [0002] In recent years, the frequency of nonreciprocal circuit elements used in mobile communications has rapidly increased from 2 GHz to 5 GHz. Generally speaking, when the frequency is increased, the DC magnetic field applied to the magnetic rotor can be reduced. Therefore, the shape of the magnetic rotor assembly including the permanent magnet, the magnetic pole plate, and the magnetic rotor can be miniaturized, and at the same time, the magnetic rotor can be accommodated. The structure of the holding member of the assembly can also be simplified. [0003] However, although simplification is possible, it is of course limited. For example, this kind of nonreciprocal circuit element adopts the structure that the magnetic rotor assembly is accomm...

AI Technical Summary

Problems solved by technology

[0010] However, in Patent Document 2, the bonding strength of the two cannot be guaranteed for a long period of time under the use environment of non-reciprocal circuit elements such as vibration and heat.

Moreover, the fixed teeth of the cover part are rotatably fitted with the slits of the case part, so during the assembling work of the cover part, the magnetic rotor assembly in the case part will come into contact with the rotating cover part, causing a very high risk of positional displacement. high

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