US4937425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a polarizing parabolic dish antenna reflector
Assignee: The AT&T MVPD Group LLC
•
Filing: 1989-08-29
•
Granted: 1990-06-26
•
Expires: 2009-08-29
Abstract
Abstract A method of fabricating a polarizing dish antenna reflector (10) wherein a light source (22) is employed to pyrolyze an organometallic compound (14) disposed on the antenna surface to form grid elements (24) directly thereon. The surface of the parabolic dish antenna reflector (10) is coated with an organometallic compound (14) that comprises a metallic component such as gold, silver, copper chrome, or other suitable metal. The coated surface may be conditioned by depositing a surface film of polyimide, or the like. The coated surface is then pyrolyzed by using a high intensity focussed light source (22), such as a laser or discharge lamp to form metal grid lines (24) on the surface. The light source (22) is scanned across the surface to create parallel scan lines, or the light source may be fixed and the reflector surface can be moved relative to the light source (22) using a computer controlled XY table (16), or the like. The focussed light pyrolyzes the organometallic compound (14) and volatilizes the organic portion thereof, leaving metal traces disposed on the reflector surface. Once all the grid lines are formed, the reflector (10) is rinsed in appropriate solvents to remove excess organometallic compound.
Inventors
- 👤 Stanley S. Chang
- 👤 Flora Yeung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:23
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/18; B23K26/02; B23K26/06; B23K26/064; B23K26/066; B23K26/0661; H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/141; H01Q19/00; H01Q19/10; H01Q19/18; H01Q19/19; H01Q19/195; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
51 words
A method of fabricating a polarizing parabolic dish antenna reflector which comprises the steps of: providing a parabolic dish antenna surface; coating the surface with an organometallic compound; pyrolyzing the coated surface using a focussed light source to form metal grid lines thereon; and removing excess organometallic compound from the surface.
Claim 2
Independent Claim
51 words
A method of fabricating a polarizing parabolic dish antenna reflector which comprises the steps of: providing a parabolic dish antenna surface; coating the surface with an organometallic compound; pyrolyzing the coated surface using a focussed light source to form metal grid lines thereon; and removing excess organometallic compound from the surface.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein the pyrolyzing step comprises the step of: scanning a focussed light source across the surface a plurality of times to form the grid lines.
Claim 4
Dependent Claim
38 words
The method of claim 1 wherein the pyrolyzing step comprises the steps of: providing a focussed light source; and moving the coated surface relative to the light source to pyrolyze the organometallic compound and form the grid lines.
Claim 5
Independent Claim
54 words
A method of fabricating a metallic antenna reflector comprising the steps of: providing an antenna surface; coating the antenna surface with an organometallic compound; and scanning a focussed light source across the coated antenna surface to convert the organometallic compound into a metal film comprising a plurality of grid lines on the antenna surface.
Claim 6
Independent Claim
54 words
A method of fabricating a metallic antenna reflector comprising the steps of: providing an antenna surface; coating the antenna surface with an organometallic compound; and scanning a focussed light source across the coated antenna surface to convert the organometallic compound into a metal film comprising a plurality of grid lines on the antenna surface.
Claim 7
Dependent Claim
26 words
The method of claim 4 which further comprises the step of: removing excess organometallic compound from the surface after formation of the plurality of grid lines.
Claim 8
Dependent Claim
27 words
The method of claim 4 wherein the removing step comprises the step of: removing excess organometallic compound from the surface by rinsing the antenna surface in solvent.
Claim 9
Independent Claim
46 words
A method of fabricating a polarizing parabolic dish antenna reflector which comprises the steps of: providing a parabolic dish antenna surface; coating the surface with an organometallic compound; and pyrolyzing the coated surface using a focussed light source to form metal grid lines on the surface.
Claim 10
Independent Claim
46 words
A method of fabricating a polarizing parabolic dish antenna reflector which comprises the steps of: providing a parabolic dish antenna surface; coating the surface with an organometallic compound; and pyrolyzing the coated surface using a focussed light source to form metal grid lines on the surface.
Claim 11
Dependent Claim
18 words
The method of claim 7 which further comprises the step of: removing excess organometallic compound from the surface.
Claim 12
Dependent Claim
30 words
The method of claim 7 wherein the pyrolyzing step comprises the steps of: scanning a focussed light source across the surface a plurality of times to form the grid lines.
Claim 13
Dependent Claim
38 words
The method of claim 7 wherein the pyrolyzing step comprises the steps of: providing a focussed light source; and moving the coated surface relative to the light source to pyrolyze the organometallic compound and form the grid lines.
Claim 14
Independent Claim
50 words
A method of fabricating a dish antenna reflector which comprises the steps of: providing a dish antenna surface; coating the surface with an organometallic compound; pyrolyzing the coated surface using a focussed light source to form metal grid lines on the surface; and removing excess organometallic compound from the surface.
Claim 15
Independent Claim
50 words
A method of fabricating a dish antenna reflector which comprises the steps of: providing a dish antenna surface; coating the surface with an organometallic compound; pyrolyzing the coated surface using a focussed light source to form metal grid lines on the surface; and removing excess organometallic compound from the surface.
Claim 16
Dependent Claim
30 words
The method of claim 11 wherein the pyrolyzing step comprises the steps of: scanning a focussed light source across the surface a plurality of times to form the grid lines.
Claim 17
Dependent Claim
38 words
The method of claim 11 wherein the pyrolyzing step comprises the steps of: providing a focussed light source; and moving the coated surface relative to the light source to pyrolyze the organometallic compound and form the grid lines.
Claim 18
Independent Claim
43 words
A method of fabricating a dish antenna reflector which comprises the steps of: providing a dish antenna surface; coating the surface with an organometallic compound; and pyrolyzing the coated surface using a focussed light source to form metal grid lines on the surface.
Claim 19
Independent Claim
43 words
A method of fabricating a dish antenna reflector which comprises the steps of: providing a dish antenna surface; coating the surface with an organometallic compound; and pyrolyzing the coated surface using a focussed light source to form metal grid lines on the surface.
Claim 20
Dependent Claim
18 words
The method of claim 14 which further comprises the step of: removing excess organometallic compound from the surface.
Claim 21
Dependent Claim
30 words
The method of claim 14 wherein the pyrolyzing step comprises the steps of: scanning a focussed light source across the surface a plurality of times to form the grid lines.
Claim 22
Dependent Claim
38 words
The method of claim 14 wherein the pyrolyzing step comprises the steps of: providing a focussed light source; and moving the coated surface relative to the light source to pyrolyze the organometallic compound and form the grid lines.
Claim 23
Dependent Claim
49 words
A polarizing parabolic dish antenna reflector fabricated by a method comprising the steps of: providing a parabolic dish antenna surface; coating the surface with an organometallic compound; pyrolyzing the coated surface a focussed light source to form metal grid lines thereon; and removing excess organometallic compound from the surface.
Claim 24
Dependent Claim
49 words
A polarizing parabolic dish antenna reflector fabricated by a method comprising the steps of: providing a parabolic dish antenna surface; coating the surface with an organometallic compound; pyrolyzing the coated surface a focussed light source to form metal grid lines thereon; and removing excess organometallic compound from the surface.
Claim 25
Dependent Claim
34 words
The reflector fabricated by the method of claim 1 wherein the pyrolyzing step comprises the step of: scanning a focussed light source across the surface a plurality of time to form the grid lines.
Claim 26
Dependent Claim
42 words
The reflector fabricated by the method of claim 1 wherein the pyrolyzing step comprises the steps of: providing a focussed light source; and moving the coated surface relative to the light source to pyrolyze the organometallic compound and form the grid lines.
Claim 27
Dependent Claim
54 words
A metallic antenna reflector fabricated by a method comprising the steps of: providing an antenna surface; coating the antenna surface with an organometallic compound; and scanning a focussed light source across the coated antenna surface to convert the organometallic compound into a metal film comprising a plurality of grid lines on the antenna surface.
Claim 28
Dependent Claim
54 words
A metallic antenna reflector fabricated by a method comprising the steps of: providing an antenna surface; coating the antenna surface with an organometallic compound; and scanning a focussed light source across the coated antenna surface to convert the organometallic compound into a metal film comprising a plurality of grid lines on the antenna surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |