US5748056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact 90° monolithic GaAs coupler for wireless applications
Assignee: Frontgrade Technologies Inc
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Filing: 1996-10-02
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Granted: 1998-05-05
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Expires: 2016-10-02
Abstract
Abstract A coupler device is disclosed which has an improved structure. The structure includes a substrate and, input ports and output ports disposed over the substrate. A plurality of inductors and capacitors are further included, which are arranged in a predetermined configuration and coupled between the ports. A layer of dielectric material is also disposed between the inductors and substrate which improves performance by reducing the dissipation losses and enhancing the frequency response of the coupler.
Inventors
- 👤 Inder J. Bahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:30
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/48; H03H7/52
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
92 words
A lumped element coupler device for wireless microwave applications of the type including input ports and output ports disposed over a semiconductive substrate, a plurality of inductors and capacitors arranged in a predetermined configuration and coupled between said ports, wherein the improvement therewith comprising: a layer of dielectric material disposed between said inductors and said substrate for improving the performance of said coupler device by reducing the dissipation losses and enhancing the frequency response, wherein said dielectric layer has a dielectric constant which is less than the dielectric constant of said substrate.
Claim 2
Dependent Claim
92 words
A lumped element coupler device for wireless microwave applications of the type including input ports and output ports disposed over a semiconductive substrate, a plurality of inductors and capacitors arranged in a predetermined configuration and coupled between said ports, wherein the improvement therewith comprising: a layer of dielectric material disposed between said inductors and said substrate for improving the performance of said coupler device by reducing the dissipation losses and enhancing the frequency response, wherein said dielectric layer has a dielectric constant which is less than the dielectric constant of said substrate.
Claim 3
Dependent Claim
24 words
The device of claim 1, wherein said dielectric layer has a dielectric constant of 3.0 and said substrate has a dielectric constant of 12.9.
Claim 4
Dependent Claim
15 words
The device of claim 1, wherein said dielectric layer is a layer of polyimide material.
Claim 5
Dependent Claim
20 words
The device of claim 2, wherein said polyimide layer has a thickness in the range of 5 to 10 um.
Claim 6
Dependent Claim
14 words
The device of claim 1, wherein said substrate is a Gallium Arsenide (GaAs) material.
Claim 7
Dependent Claim
51 words
The device of claim 1, wherein said predetermined configuration is a one section network configured to induce a 90° phase shift at said output ports, said one section network including four circuit nodes, an inductor coupled between every two of said nodes and a capacitor further coupled to each said node.
Claim 8
Dependent Claim
64 words
The device of claim 1, wherein said predetermined configuration is a two section network configured to induce a 90° phase shift at said output ports, said two section network includes a first section and a second section, wherein each of said sections include four circuit nodes, an inductor coupled between every two of said nodes and a capacitor further coupled to each said node.
Claim 9
Dependent Claim
33 words
The device of claim 7, wherein said sections are coupled together in such a fashion in order to provide two nodes, two capacitors and an inductor that are common two both said sections.
Claim 10
Dependent Claim
87 words
A lumped element coupler device for wireless microwave applications, comprising: a semiconductive substrate; input ports and output ports disposed over said substrate; a plurality of inductors and capacitors arranged in a predetermined configuration and coupled between said ports; and a layer of dielectric material disposed between said inductors and said substrate for improving the performance of said coupler device by reducing the dissipation losses and enhancing the frequency response, wherein said dielectric layer has a dielectric constant which is less than the dielectric constant of said substrate.
Claim 11
Dependent Claim
87 words
A lumped element coupler device for wireless microwave applications, comprising: a semiconductive substrate; input ports and output ports disposed over said substrate; a plurality of inductors and capacitors arranged in a predetermined configuration and coupled between said ports; and a layer of dielectric material disposed between said inductors and said substrate for improving the performance of said coupler device by reducing the dissipation losses and enhancing the frequency response, wherein said dielectric layer has a dielectric constant which is less than the dielectric constant of said substrate.
Claim 12
Dependent Claim
24 words
The device of claim 9, wherein said dielectric layer has a dielectric constant of 3.0 and said substrate has a dielectric constant of 12.9.
Claim 13
Dependent Claim
15 words
The device of claim 9, wherein said dielectric layer is a layer of polyimide material.
Claim 14
Dependent Claim
20 words
The device of claim 11, wherein said polyimide layer has a thickness in the range of 5 to 10 um.
Claim 15
Dependent Claim
14 words
The device of claim 9, wherein said substrate is a Gallium Arsenide (GaAs) material.
Claim 16
Dependent Claim
36 words
The device of claim 9, wherein said predetermined configuration is a one section network including four circuit nodes, an inductor coupled between every two of said nodes and a capacitor further coupled to each said node.
Claim 17
Dependent Claim
49 words
The device of claim 9, wherein said predetermined configuration is a two section network including a first section and a second section, wherein each of said sections include four circuit nodes, an inductor coupled between every two of said nodes and a capacitor further coupled to each said node.
Claim 18
Dependent Claim
33 words
The device of claim 15, wherein said sections are coupled together in such a fashion in order to provide two nodes, two capacitors and an inductor that are common two both said sections.
Claim 19
Dependent Claim
21 words
The device of claim 9, wherein said predetermined configuration is configured to induce a 90° phase shift at said output ports.
Claim 20
Independent Claim
90 words
A method for fabricating a lumped element coupler device, comprising the steps of: providing a semiconductive substrate; disposing input ports and output ports over said substrate; coupling between said ports a plurality of inductors and capacitors arranged in a predetermined configuration; and disposing a layer of dielectric material between said inductors and said substrate for improving the performance of said coupler device by reducing the dissipation losses and enhancing the frequency responses wherein said dielectric layer has a dielectric constant which is less than the dielectric constant of said substrate.
Claim 21
Independent Claim
90 words
A method for fabricating a lumped element coupler device, comprising the steps of: providing a semiconductive substrate; disposing input ports and output ports over said substrate; coupling between said ports a plurality of inductors and capacitors arranged in a predetermined configuration; and disposing a layer of dielectric material between said inductors and said substrate for improving the performance of said coupler device by reducing the dissipation losses and enhancing the frequency responses wherein said dielectric layer has a dielectric constant which is less than the dielectric constant of said substrate.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 2001-05-04 | 2001-11-03 | 2002-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-04 | 2005-11-03 | 2006-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-04 | 2009-11-03 | 2010-05-05 | $7700.00 | Window Closed / Lapsed |