Patent ID: 6531930
Filing Date: 2003-03-11
Classification: H01P

Abstract:
A mounting substrate for a non-reciprocal circuit element comprising:(a) at least two input/output land patterns to which external input/output terminals for inputting/outputting signals are connected as land patterns on which the non-reciprocal circuit element is mounted and (b) at least one grounding land pattern to which external ground terminals are connected as land patterns on which the non-reciprocal circuit element is mounted, and (c) said mounting substrate having an upper surface; and said non-reciprocal circuit element configured as an assembly and having a bottom surface; wherein said bottom surface of the assembly is mounted on the upper surface of the mounting substrate; said assembly having at least a ferrite and transmission lines folded over the ferrite; and at least two external input/output terminals for transferring a signal to and from an external unit; and at least one of the external grounding terminals for grounding, wherein at least one of the external grounding terminals is set between the two external input/output terminals; and a part of the at least one grounding land pattern is set between the at least two input/output land patterns.