US5572172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
180° power divider for a helix antenna
Assignee: Qualcomm Inc
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Filing: 1995-08-09
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Granted: 1996-11-05
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Expires: 2015-08-09
Abstract
Abstract A 180° power divider accepts an input signal and splits it into two output signals that are equal in amplitude and differ in phase by 180°. In a first region, an unbalanced input signal travels along a trace on a circuit surface of a substrate. On the opposite surface is a ground plane. In a second region, the ground plane tapers to a width that is substantially equal to the width of the signal trace. As a result, opposite the signal trace is a return signal trace of substantially the same width. In this region, the signal is a balanced signal, and for the current flowing in the signal trace, there is an equal but opposite current flowing in the return signal trace on the opposite side. In a third region, the return signal trace is brought to the circuit surface of the substrate and a second ground plane is provided on the opposite surface. This second ground plane is floating with respect to the first ground plane. The return signal differs in phase from the other signal by 180°.
Inventors
- 👤 Randolph E. Standke
- 👤 James H. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:24
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/08; H01P5/10; H01Q; H01Q11/00; H01Q11/02; H01Q11/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
A device for providing two output signals having a relative differential phase of 180°, the device comprising: a substrate; first conductive path disposed on a first surface of said substrate; a ground portion disposed on a second surface of said substrate forming a ground plane and tapering from said ground plane to form a second conductive path having a width that is substantially equal to the width of said first conductive path and being positioned on said second surface substantially in alignment with said first conductive path; a third conductive path disposed on said first surface of said substrate; a tab disposed on said second surface and extending from said second conductive path; and an electrical connection between said tab on said second surface and said third conductive path on said first surface.
Claim 2
Independent Claim
133 words
A device for providing two output signals having a relative differential phase of 180°, the device comprising: a substrate; first conductive path disposed on a first surface of said substrate; a ground portion disposed on a second surface of said substrate forming a ground plane and tapering from said ground plane to form a second conductive path having a width that is substantially equal to the width of said first conductive path and being positioned on said second surface substantially in alignment with said first conductive path; a third conductive path disposed on said first surface of said substrate; a tab disposed on said second surface and extending from said second conductive path; and an electrical connection between said tab on said second surface and said third conductive path on said first surface.
Claim 3
Independent Claim
122 words
A device for providing two output signals having a relative differential phase of 180°, the device comprising: a substrate; a first conductive path disposed on a first surface of said substrate: a ground portion disposed on a second surface of said substrate forming a ground plane and tapering from said ground plane to form a second conductive path having a width that is substantially equal to the width of said first conductive path and being positioned on said second surface substantially in alignment with said first conductive path; a third conductive path disposed on said first surface of said substrate; and an electrical connection between said second conductive path on said second surface and said third conductive path on said first surface.
Claim 4
Independent Claim
122 words
A device for providing two output signals having a relative differential phase of 180°, the device comprising: a substrate; a first conductive path disposed on a first surface of said substrate: a ground portion disposed on a second surface of said substrate forming a ground plane and tapering from said ground plane to form a second conductive path having a width that is substantially equal to the width of said first conductive path and being positioned on said second surface substantially in alignment with said first conductive path; a third conductive path disposed on said first surface of said substrate; and an electrical connection between said second conductive path on said second surface and said third conductive path on said first surface.
Claim 5
Independent Claim
192 words
A device for providing two output signals having a relative differential phase of 180°, comprising: a substrate having an input area, a transition area and an output area; a first conductive path disposed on a first surface of said substrate and spanning said input area, said transition area and said output area; a ground portion disposed on a second surface of said substrate forming a ground plane in said input area of said substrate, and tapering from the ground plane to form a tapered portion in said transition area of said substrate: a second conductive path extending from said tapered portion on said second surface of said substrate and having a width that is substantially equal to the width of said first conductive path and being positioned on said second surface substantially in alignment with said first conductive path; a third conductive path disposed on said first surface of said substrate in said output area of said substrate; a tab disposed on said second surface an extending from said second conductive path; and and electrical connection between said tab on said second surface and said third conductive path on said first surface.
Claim 6
Independent Claim
192 words
A device for providing two output signals having a relative differential phase of 180°, comprising: a substrate having an input area, a transition area and an output area; a first conductive path disposed on a first surface of said substrate and spanning said input area, said transition area and said output area; a ground portion disposed on a second surface of said substrate forming a ground plane in said input area of said substrate, and tapering from the ground plane to form a tapered portion in said transition area of said substrate: a second conductive path extending from said tapered portion on said second surface of said substrate and having a width that is substantially equal to the width of said first conductive path and being positioned on said second surface substantially in alignment with said first conductive path; a third conductive path disposed on said first surface of said substrate in said output area of said substrate; a tab disposed on said second surface an extending from said second conductive path; and and electrical connection between said tab on said second surface and said third conductive path on said first surface.
Claim 7
Dependent Claim
34 words
The device of claim 3, wherein at least one of said first, second and third conductive paths are wider in said output area of said substrate to reduce the characteristic impedance of the device.
Claim 8
Dependent Claim
33 words
The device of claim 3, wherein at least one of said first and second conductive paths are wider in said transition area of said substrate to reduce the characteristic impedance of the device.
Claim 9
Independent Claim
180 words
A device for providing two output signals having a relative differential phase of 180°, comprising: a substrate having an input area, a transition area and an output area: a first conductive path disposed on a first surface of said substrate and spanning said input area, said transition area and said output area; a ground portion disposed on a second surface of said substrate forming a ground plane in said input area of said substrate, and tapering from the ground plane to form a tapered portion in said transition area of said substrate; a second conductive path extending from said tapered portion on said second surface of said substrate and having a width that is substantially equal to the width of said first conductive path and being positioned on said second surface substantially in alignment with said first conductive path; a third conductive path disposed on said first surface of said substrate in said output area of said substrate; and an electrical connection between said second conductive path on said second surface and said third conductive path on said first surface.
Claim 10
Independent Claim
180 words
A device for providing two output signals having a relative differential phase of 180°, comprising: a substrate having an input area, a transition area and an output area: a first conductive path disposed on a first surface of said substrate and spanning said input area, said transition area and said output area; a ground portion disposed on a second surface of said substrate forming a ground plane in said input area of said substrate, and tapering from the ground plane to form a tapered portion in said transition area of said substrate; a second conductive path extending from said tapered portion on said second surface of said substrate and having a width that is substantially equal to the width of said first conductive path and being positioned on said second surface substantially in alignment with said first conductive path; a third conductive path disposed on said first surface of said substrate in said output area of said substrate; and an electrical connection between said second conductive path on said second surface and said third conductive path on said first surface.
Claim 11
Dependent Claim
34 words
The device of claim 6, wherein at least one of said first, second and third conductive paths are wider in said output area of said substrate to reduce the characteristic impedance of the device.
Claim 12
Dependent Claim
33 words
The device of claim 6, wherein at least one of said first and second conductive paths are wider in said transition area of said substrate to reduce the characteristic impedance of the device.
References Cited (Backward Citations)
US3715689A
Cited
US4125810A
Cited
US4349824A
Cited
US4442590A
Cited
US4490721A
Cited
US4527163A
Cited
US4652880A
Cited
US4568893A
Cited
US4943809A
Cited
US4761654A
Cited
US4717918A
Cited
US4935747A
Cited
US5005019A
Cited
US4849767A
Cited
US4924236A
Cited
US4928078A
Cited
US4916410A
Cited
US5036335A
Cited
US5021799A
Cited
US5255005A
Cited
US5132645A
Cited
US4954790A
Cited
US5353040A
Cited
US5041842A
Cited
US5191352A
Cited
US5198831A
Cited
US5298910A
Cited
US5317327A
Cited
US5343173A
Cited
US5349365A
Cited
US5329287A
Cited
US5370677A
Cited
US5345248A
Cited
US5359340A
Cited
US5444455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-11-05 | 2000-05-06 | 2000-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-05 | 2004-05-06 | 2004-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-05 | 2008-05-06 | 2008-11-05 | $7700.00 | Window Closed / Lapsed |