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US6661318B2
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Radio frequency circuit module on multi-layer substrate
Assignee: NEC Corp
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Filing: 2001-05-08
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Granted: 2003-12-09
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Expires: 2021-05-08
Abstract
Abstract An object of the present invention is to provide a radio frequency integrated circuit module that is less susceptible to the electromagnetic influence and that is not degraded in electric connection. The radio frequency circuit module of the present invention including circuit elements mounted on a multi-layer circuit substrate having dielectric layers is characterized in that an exposed connection portion is provided by removing a part of the dielectric, and a strip line connected to said circuit elements and a co-axial line for transmitting a radio frequency signal from/to said strip line are connected together in a bottom portion of said exposed connection portion so as to be rectilinear in a three dimensional way.
Inventors
- 👤 Naoya Tamaki
- 👤 Norio Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:44
CPC Classifications
H; H05; H05K; H05K9/00; H01; H01P; H01P5/00; H01P5/08; H01P5/085; H05K1/00; H05K1/02; H05K1/0213; H05K1/0216; H05K1/0218; H05K1/0219; H05K1/18; H05K1/182; H05K1/183; H05K2201/00; H05K2201/09; H05K2201/09209; H05K2201/09654; H05K2201/09809; H05K2201/09818; H05K2201/09845; H05K2201/10; H05K2201/10227; H05K2201/10356; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3405; H05K3/341; H05K3/3421
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A radio frequency circuit module which comprises: a multi-layer circuit substrate including dielectric layers; circuit elements mounted on said multi-layer circuit substrate; a co-axial line for connecting said circuit elements; a strip line connected with said co-axial line; and a cavity that extends part way into said substrate so that a bottom of said cavity is a portion of said substrate, wherein said co-axial line is curved to define an arc in said cavity and an inner conductor of said co-axial line is connected with said strip line on the bottom.
Claim 2
Dependent Claim
91 words
A radio frequency circuit module which comprises: a multi-layer circuit substrate including dielectric layers; circuit elements mounted on said multi-layer circuit substrate; a co-axial line for connecting said circuit elements; a strip line connected with said co-axial line; and a cavity that extends part way into said substrate so that a bottom of said cavity is a portion of said substrate, wherein said co-axial line is curved to define an arc in said cavity and an inner conductor of said co-axial line is connected with said strip line on the bottom.
Claim 3
Dependent Claim
20 words
The radio frequency circuit module according to claim 1 , wherein said dielectric layers are made of ceramic or alumina.
Claim 4
Dependent Claim
34 words
The radio frequency circuit module according to claim 1 , wherein said connection portion is disposed at such a position as to be less susceptible to influence of electromagnetic waves from said circuit elements.
Claim 5
Dependent Claim
159 words
A radio frequency circuit module comprising: a substrate having ground layers on opposite surfaces thereof; a conductive strip line interior to said substrate; a cavity that extends part way into said substrate so that a bottom of said cavity is a portion of said substrate, wherein a first surface of said strip line is exposed in said cavity and covers a first part of the bottom of said cavity and the substrate is exposed at a second part of the bottom of said cavity; and a co-axial line that extends into said cavity so that an exterior surface of said co-axial line is on the second part of the bottom of said cavity, wherein a connection portion of an inner conductor of said co-axial line is exposed in said cavity and is electrically connected to said first surface of said strip line and an outer conductor of said co-axial line is electrically connected to one of said ground layers.
Claim 6
Dependent Claim
159 words
A radio frequency circuit module comprising: a substrate having ground layers on opposite surfaces thereof; a conductive strip line interior to said substrate; a cavity that extends part way into said substrate so that a bottom of said cavity is a portion of said substrate, wherein a first surface of said strip line is exposed in said cavity and covers a first part of the bottom of said cavity and the substrate is exposed at a second part of the bottom of said cavity; and a co-axial line that extends into said cavity so that an exterior surface of said co-axial line is on the second part of the bottom of said cavity, wherein a connection portion of an inner conductor of said co-axial line is exposed in said cavity and is electrically connected to said first surface of said strip line and an outer conductor of said co-axial line is electrically connected to one of said ground layers.
Claim 7
Dependent Claim
18 words
The radio frequency circuit module of claim 4 , wherein said substrate comprises one of ceramic and alumina.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-12-08 | 2007-06-09 | 2007-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-12-08 | 2011-06-09 | 2011-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-12-08 | 2015-06-09 | 2015-12-09 | $7700.00 | Window Closed / Lapsed |