US6052087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna device and radar module
Assignee: Murata Manufacturing Co Ltd
•
Filing: 1998-04-08
•
Granted: 2000-04-18
•
Expires: 2018-04-08
Abstract
Abstract The invention provides an antenna in which a signal is directly transferred from a planar dielectric transmission line to a primary radiator without having to perform transmission mode conversion from the planar dielectric transmission mode to another mode such as a coplanar transmission mode, a microstrip transmission mode, or a waveguide transmission mode thereby eliminating the transmission loss which would otherwise occur due to the transmission mode conversion. A dielectric resonator is disposed in the vicinity of the end of the planar dielectric transmission line PDTL formed between two slots disposed on both sides of a dielectric plate. Furthermore, a slotted plate, a lens supporting base, and a dielectric lens are disposed one on another.
Inventors
- 👤 Yohei Ishikawa
- 👤 Koichi Sakamoto
- 👤 Kenichi Iio
- 👤 Hideaki Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:39
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/20; H01Q13/28; H01Q13/10; H01Q13/24; H01Q19/00; H01Q19/06; H01Q19/062
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
189 words
An antenna device comprising: a dielectric plate provided with two electrodes that are formed on its first principal surface in such a manner that said two electrodes are spaced a fixed distance apart so that a first slot is formed between said two electrodes, and also provided with another two electrodes that are formed on the second principal surface of said dielectric plate in such a manner that said another two electrodes are spaced a fixed distance apart so that a second slot is formed between said another two electrodes, the location of said second slot corresponding to the location of said first slot on the opposite side of said dielectric plate, the region of said dielectric plate between the first slot and the second slot serving as the propagating region of a planar dielectric transmission line through which a plane wave is transmitted; and a dielectric resonator that is disposed on the end of or in the middle of said planar dielectric transmission line so that said planar dielectric transmission line is coupled with said dielectric resonator and so that said dielectric resonator serves as a primary radiator.
Claim 2
Dependent Claim
189 words
An antenna device comprising: a dielectric plate provided with two electrodes that are formed on its first principal surface in such a manner that said two electrodes are spaced a fixed distance apart so that a first slot is formed between said two electrodes, and also provided with another two electrodes that are formed on the second principal surface of said dielectric plate in such a manner that said another two electrodes are spaced a fixed distance apart so that a second slot is formed between said another two electrodes, the location of said second slot corresponding to the location of said first slot on the opposite side of said dielectric plate, the region of said dielectric plate between the first slot and the second slot serving as the propagating region of a planar dielectric transmission line through which a plane wave is transmitted; and a dielectric resonator that is disposed on the end of or in the middle of said planar dielectric transmission line so that said planar dielectric transmission line is coupled with said dielectric resonator and so that said dielectric resonator serves as a primary radiator.
Claim 3
Dependent Claim
218 words
An antenna device comprising: a dielectric plate provided with two electrodes that are formed on its first principal surface in such a manner that said two electrodes are spaced a fixed distance apart so that a first slot is formed between said two electrodes and also provided with another two electrodes that are formed on the second principal surface of said dielectric plate in such a manner that said another two electrodes are spaced a fixed distance apart so that a second slot is formed between said another two electrodes, the location of said second slot corresponding to the location of said first slot on the opposite side of said dielectric plate, the region of said dielectric plate between the first slot and the second slot serving as the propagating region of a planar dielectric transmission line through which a plane wave is transmitted; a dielectric resonator formed of a part of said dielectric plate, said two electrodes and said another two electrodes being not formed on said part, said dielectric resonator being located on the end of or in the middle of said planar dielectric transmission line; and another dielectric resonator disposed on the end of or in the middle of said planar dielectric transmission line so that said another dielectric resonator serves as a primary radiator.
Claim 4
Dependent Claim
218 words
An antenna device comprising: a dielectric plate provided with two electrodes that are formed on its first principal surface in such a manner that said two electrodes are spaced a fixed distance apart so that a first slot is formed between said two electrodes and also provided with another two electrodes that are formed on the second principal surface of said dielectric plate in such a manner that said another two electrodes are spaced a fixed distance apart so that a second slot is formed between said another two electrodes, the location of said second slot corresponding to the location of said first slot on the opposite side of said dielectric plate, the region of said dielectric plate between the first slot and the second slot serving as the propagating region of a planar dielectric transmission line through which a plane wave is transmitted; a dielectric resonator formed of a part of said dielectric plate, said two electrodes and said another two electrodes being not formed on said part, said dielectric resonator being located on the end of or in the middle of said planar dielectric transmission line; and another dielectric resonator disposed on the end of or in the middle of said planar dielectric transmission line so that said another dielectric resonator serves as a primary radiator.
Claim 5
Dependent Claim
38 words
An antenna device according to claim 1, further comprising a slot disposed in the vicinity of said dielectric resonator, said slot being adapted to resonate at a frequency substantially equal to the resonance frequency of said dielectric resonator.
Claim 6
Dependent Claim
56 words
An antenna device according to claims 1, wherein said dielectric resonator includes two piecies that are disposed on the first and second principal surfaces, respectively, of said planar dielectric transmission line in such a manner that said two piecies are disposed at the same location but on the opposite sides of said planar dielectric transmission line.
Claim 7
Dependent Claim
53 words
An antenna device according to claims 1, further comprising a dielectric lens disposed so that the center axis of said dielectric lens is substantially coincident with the center axis of said dielectric resonator and so that the focal point of said dielectric lens is substantially coincident with the location of said dielectric resonator.
Claim 8
Dependent Claim
222 words
A radar module comprising: an antenna device including; a dielectric plate provided with two electrodes that are formed on its first principal surface in such a manner that said two electrodes are spaced a fixed distance apart so that a first slot is formed between said two electrodes, and also provided with another two electrodes that are formed on the second principal surface of said dielectric plate in such a manner that said another two electrodes are spaced a fixed distance apart so that a second slot is formed between said another two electrodes, the location of said second slot corresponding to the location of said first slot on the opposite side of said dielectric plate, the region of said dielectric plate between the first slot and the second slot serving as the propagating region of a planar dielectric transmission line through which a plane wave is transmitted; and a dielectric resonator that is disposed on the end of or in the middle of said planar dielectric transmission line so that said planar dielectric transmission line is coupled with said dielectric resonator and so that said dielectric resonator serves as a primary radiator; an oscillator for generating a signal to be radiated via said antenna device; and a mixer for mixing a signal received via said antenna device with a local signal.
Claim 9
Dependent Claim
222 words
A radar module comprising: an antenna device including; a dielectric plate provided with two electrodes that are formed on its first principal surface in such a manner that said two electrodes are spaced a fixed distance apart so that a first slot is formed between said two electrodes, and also provided with another two electrodes that are formed on the second principal surface of said dielectric plate in such a manner that said another two electrodes are spaced a fixed distance apart so that a second slot is formed between said another two electrodes, the location of said second slot corresponding to the location of said first slot on the opposite side of said dielectric plate, the region of said dielectric plate between the first slot and the second slot serving as the propagating region of a planar dielectric transmission line through which a plane wave is transmitted; and a dielectric resonator that is disposed on the end of or in the middle of said planar dielectric transmission line so that said planar dielectric transmission line is coupled with said dielectric resonator and so that said dielectric resonator serves as a primary radiator; an oscillator for generating a signal to be radiated via said antenna device; and a mixer for mixing a signal received via said antenna device with a local signal.
References Cited (Backward Citations)
US4019161A
Cited
EP0426972A1
Cited
US5539420A
Cited
US5583523A
Cited
DE19600516A1
Cited
JPH08191211A
Cited
US5764116A
Cited
EP0735604A1
Cited
EP0743697A1
Cited
US5874922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-18 | 2003-10-18 | 2004-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-18 | 2007-10-18 | 2008-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-18 | 2011-10-18 | 2012-04-18 | $7700.00 | Window Closed / Lapsed |