US6320543B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave and millimeter wave circuit apparatus
Assignee: NEC Corp
•
Filing: 2000-03-17
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Granted: 2001-11-20
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Expires: 2020-03-17
Abstract
Abstract The present invention provides a microwave and millimeter wave circuit apparatus having a reduced size and which can be produced easily, improving productivity. The microwave and millimeter wave circuit apparatus includes: a grounding conductive layer 4 grounded; a first dielectric layer 5 formed on this grounding conductive layer 4; a signal line selectively formed on this first dielectric layer 5; a second dielectric layer 7 covering at least a portion of the signal line 6; a cavity 2 formed in this second dielectric layer 7 and extending to the signal line 6; a monolithic microwave integrated circuit 1 arranged in the cavity 2 and connected to the signal line 6; and an antenna connected to the signal line 6.
Inventors
- 👤 Keiichi Ohata
- 👤 Kenichi Maruhashi
- 👤 Masaharu Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:42
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/38; H01Q23/00; H01Q9/00; H01Q9/04; H01Q9/0407; H10; H10W; H10W44/00; H10W44/20; H10W44/241; H10W44/248; H10W70/00; H10W70/60; H10W70/67; H10W70/68; H10W70/682; H10W70/685; H10W72/00; H10W72/071; H10W72/072; H10W72/07251; H10W72/20; H10W90/00; H10W90/701; H10W90/721; H10W90/724; H10W90/751; H10W90/753; H10W90/754
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
83 words
A microwave and millimeter wave circuit apparatus comprising: a grounding conductive layer grounded; a first dielectric layer formed on the grounding conductive layer; a signal line formed selectively on the first dielectric layer; a second dielectric layer coveting at least a part of the signal line; a cavity formed in the second dielectric layer and extending to the signal line; a monolithic microwave integrated circuit arranged in the cavity and connected to the signal line; and an antenna connected to the signal line.
Claim 2
Dependent Claim
83 words
A microwave and millimeter wave circuit apparatus comprising: a grounding conductive layer grounded; a first dielectric layer formed on the grounding conductive layer; a signal line formed selectively on the first dielectric layer; a second dielectric layer coveting at least a part of the signal line; a cavity formed in the second dielectric layer and extending to the signal line; a monolithic microwave integrated circuit arranged in the cavity and connected to the signal line; and an antenna connected to the signal line.
Claim 3
Dependent Claim
22 words
The microwave and millimeter wave circuit apparatus as claimed in claim 1 , wherein the monolithic microwave integrated circuit is flip-chip mounted.
Claim 4
Dependent Claim
63 words
The microwave and millimeter wave circuit apparatus as claimed in claim 1 , wherein the first dielectric layer has a thickness smaller than a value obtained by c/(4f·(∈r 1 −1) ½ ) wherein ∈r 1 is a relative dielectric constant of the first dielectric layer, f is a frequency of the signal propagating in the signal line, and c is a light velocity.
Claim 5
Dependent Claim
63 words
The microwave and millimeter wave circuit apparatus as claimed in claim 1 , wherein the second dielectric layer has a thickness smaller than a value obtained by c/(4f·(∈r 2 −1) ½ ) wherein ∈r 2 is a relative dielectric constant of the second dielectric layer, f is a frequency of the signal propagating in the signal line, and c is a light velocity.
Claim 6
Dependent Claim
29 words
The microwave and millimeter wave circuit apparatus as claimed in claim 1 , wherein the second dielectric layer has at least a portion where no metal cover is provided.
Claim 7
Dependent Claim
34 words
The microwave and millimeter wave circuit apparatus as claimed in claim 1 , the signal line has a region exposed from the first or the second dielectric layer between the cavity and the antenna.
Claim 8
Dependent Claim
121 words
A microwave and millimeter wave circuit apparatus comprising: a grounding conductive layer grounded; a first dielectric layer formed on the grounding conductive layer; a signal line formed selectively on the first dielectric layer; a second dielectric layer covering at least a part of the signal line; a cavity formed in the second dielectric layer and extending to the signal line; a monolithic microwave integrated circuit arranged in the cavity and connected to the signal line; and an antenna connected to the signal line, the apparatus further comprising two second grounding conductive layers formed so as to sandwich the signal line on the first dielectric layer and grounded, wherein the signal line and the two grounding conductive layers constitute a coplanar line.
Claim 9
Dependent Claim
121 words
A microwave and millimeter wave circuit apparatus comprising: a grounding conductive layer grounded; a first dielectric layer formed on the grounding conductive layer; a signal line formed selectively on the first dielectric layer; a second dielectric layer covering at least a part of the signal line; a cavity formed in the second dielectric layer and extending to the signal line; a monolithic microwave integrated circuit arranged in the cavity and connected to the signal line; and an antenna connected to the signal line, the apparatus further comprising two second grounding conductive layers formed so as to sandwich the signal line on the first dielectric layer and grounded, wherein the signal line and the two grounding conductive layers constitute a coplanar line.
Claim 10
Dependent Claim
22 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , wherein the monolithic microwave integrated circuit is flip-chip mounted.
Claim 11
Dependent Claim
63 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , wherein the first dielectric layer has a thickness smaller than a value obtained by c/(4f·(∈r 1 −1) ½ ) wherein ∈r 1 is a relative dielectric constant of the first dielectric layer, f is a frequency of the signal propagating in the signal line, and c is a light velocity.
Claim 12
Dependent Claim
63 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , wherein the second dielectric layer has a thickness smaller than a value obtained by c/(4f·(∈r 2 −1) ½ ) wherein ∈r 2 is a relative dielectric constant of the second dielectric layer, f is a frequency of the signal propagating in the signal line, and c is a light velocity.
Claim 13
Dependent Claim
81 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , wherein a groove is formed in the first dielectric layer, and the first dielectric layer in the region of the groove has a thickness smaller than a value obtained from equation c/(4f·(∈r 1 −1) ½ ) wherein ∈r 1 is a relative dielectric constant of the first dielectric layer, f is the maximum frequency of the signal propagating in the signal line, and c is the light velocity.
Claim 14
Dependent Claim
83 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , wherein a second groove is formed in the second dielectric layer, and the second dielectric layer in the region of the second groove has a thickness smaller than a value obtained from equation c/(4f·(∈r 2 −1) ½ ) wherein ∈r 2 is a relative dielectric constant of the second dielectric layer, f is the maximum frequency of the signal propagating in the signal line, and c is the light velocity.
Claim 15
Dependent Claim
40 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , the apparatus further comprising a via hole buried in the first dielectric layer and connected to the grounding conductive layer and to the second grounding conductive layer.
Claim 16
Dependent Claim
29 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , wherein the second dielectric layer has at least a portion where no metal cover is provided.
Claim 17
Dependent Claim
51 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , the apparatus further comprising: a surface conductive layer formed on the second dielectric layer; and a second via hole buried in the second dielectric layer and connected to the second grounding conductive layer and the surface conductive layer.
Claim 18
Dependent Claim
45 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , wherein in a cross section orthogonally intersecting the extension of the signal line, the second grounding conductive layer is formed inside of the ends of the first and the second dielectric layers.
Claim 19
Dependent Claim
34 words
The microwave and millimeter wave circuit apparatus as claimed in claim 7 , the signal line has a region exposed from the first or the second dielectric layer between the cavity and the antenna.
Claim 20
Dependent Claim
154 words
A microwave and millimeter wave circuit apparatus comprising: a grounding conductive layer grounded; a first dielectric layer formed on the grounding conductive layer; a signal line formed selectively on the first dielectric layer; a second dielectric layer covering at least a part of the signal line; a cavity formed in the second dielectric layer and extending to the signal line; a monolithic microwave integrated circuit arranged in the cavity and connected to the signal line; and an antenna connected to the signal line, wherein further a groove is formed in the first dielectric layer, and the first dielectric layer in the region of the groove has a thickness smaller than a value obtained from equation c/(4f·(∈ r1 −1) ½ ) wherein ∈ r1 is a is a relative dielectric constant of the first dielectric layer, f is the maximum frequency of the signal propagating in the signal line, and c is the light velocity.
Claim 21
Dependent Claim
154 words
A microwave and millimeter wave circuit apparatus comprising: a grounding conductive layer grounded; a first dielectric layer formed on the grounding conductive layer; a signal line formed selectively on the first dielectric layer; a second dielectric layer covering at least a part of the signal line; a cavity formed in the second dielectric layer and extending to the signal line; a monolithic microwave integrated circuit arranged in the cavity and connected to the signal line; and an antenna connected to the signal line, wherein further a groove is formed in the first dielectric layer, and the first dielectric layer in the region of the groove has a thickness smaller than a value obtained from equation c/(4f·(∈ r1 −1) ½ ) wherein ∈ r1 is a is a relative dielectric constant of the first dielectric layer, f is the maximum frequency of the signal propagating in the signal line, and c is the light velocity.
Claim 22
Dependent Claim
154 words
A microwave and millimeter wave circuit apparatus comprising: a grounding conductive layer grounded; a first dielectric layer formed on the grounding conductive layer; a signal line formed selectively on the first dielectric layer; a second dielectric layer covering at least a part of the signal line; a cavity formed in the second dielectric layer and extending to the signal line; a monolithic microwave integrated circuit arranged in the cavity and connected to the signal line; and an antenna connected to the signal line, wherein further a second groove is formed in the second dielectric layer, and the second dielectric layer in the region of the second groove has a thickness smaller than a value obtained from equation c/(4f·(∈ r1 −1) ½ ) wherein ∈ r1 is a relative dielectric constant of the second dielectric layer, f is the maximum frequency of the signal propagating in the signal line, and c is the light velocity.
Claim 23
Dependent Claim
154 words
A microwave and millimeter wave circuit apparatus comprising: a grounding conductive layer grounded; a first dielectric layer formed on the grounding conductive layer; a signal line formed selectively on the first dielectric layer; a second dielectric layer covering at least a part of the signal line; a cavity formed in the second dielectric layer and extending to the signal line; a monolithic microwave integrated circuit arranged in the cavity and connected to the signal line; and an antenna connected to the signal line, wherein further a second groove is formed in the second dielectric layer, and the second dielectric layer in the region of the second groove has a thickness smaller than a value obtained from equation c/(4f·(∈ r1 −1) ½ ) wherein ∈ r1 is a relative dielectric constant of the second dielectric layer, f is the maximum frequency of the signal propagating in the signal line, and c is the light velocity.
References Cited (Backward Citations)
US5903239A
Cited
US6018299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-11-19 | 2005-05-21 | 2005-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-11-19 | 2009-05-21 | 2009-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-11-19 | 2013-05-21 | 2013-11-20 | $7700.00 | Window Closed / Lapsed |