High frequency module board device

Details High frequency module board device High frequency module board device

2005-05-03

2005-05-03

Shah, Kamini (Department: 2142)

Data processing: measuring, calibrating, or testing

Testing system

Of mechanical system

C257S748000, C257S724000, C361S761000, C361S814000

Reexamination Certificate

active

06889155

ABSTRACT:
The present invention relates to a high frequency module board device having a high frequency transmitting and receiving circuit for modulating and demodulating a high frequency signal. The high frequency module board device comprises a base board (2) whose main surface is formed as a build-up surface (2a) and a high frequency circuit part (3) formed on the build-up surface of the base board (2) and having passive elements formed. The base board (2) has an area (29) in which wiring is not formed in a lower layer from a fourth wiring layer (8b). The high frequency circuit part (3) has an upper electrode part (36) and a lower electrode part (35) in positions corresponding to the area (29) in which the wiring is not formed. Thus, since a capacitance (18) is provided just above the area (29) in which the wiring is not formed, a parasitic capacity that the capacitance (18) receives from ground patterns (14) is reduced. Accordingly, the characteristics of the capacitance (18) can be improved.

REFERENCES:
patent: 06-077665 (1994-03-01), None
patent: 10-322029 (1998-04-01), None
patent: 2000-189937 (2000-06-01), None
patent: 2001-196856 (2001-07-01), None
patent: 2001-313469 (2001-11-01), None
patent: 2002-043841 (2002-02-01), None

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